require=(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
/**
 * Export cheerio (with )
 */

exports = module.exports = require('./lib/cheerio');

/*
  Export the version
*/

exports.version = require('./package').version;

},{"./lib/cheerio":6,"./package":62}],2:[function(require,module,exports){
var _ = require('lodash'),
  utils = require('../utils'),
  isTag = utils.isTag,
  domEach = utils.domEach,
  hasOwn = Object.prototype.hasOwnProperty,
  camelCase = utils.camelCase,
  cssCase = utils.cssCase,
  rspace = /\s+/,
  dataAttrPrefix = 'data-',

  // Lookup table for coercing string data-* attributes to their corresponding
  // JavaScript primitives
  primitives = {
    null: null,
    true: true,
    false: false
  },

  // Attributes that are booleans
  rboolean = /^(?:autofocus|autoplay|async|checked|controls|defer|disabled|hidden|loop|multiple|open|readonly|required|scoped|selected)$/i,
  // Matches strings that look like JSON objects or arrays
  rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/;


var getAttr = function(elem, name) {
  if (!elem || !isTag(elem)) return;

  if (!elem.attribs) {
    elem.attribs = {};
  }

  // Return the entire attribs object if no attribute specified
  if (!name) {
    return elem.attribs;
  }

  if (hasOwn.call(elem.attribs, name)) {
    // Get the (decoded) attribute
    return rboolean.test(name) ? name : elem.attribs[name];
  }
};

var setAttr = function(el, name, value) {

  if (value === null) {
    removeAttribute(el, name);
  } else {
    el.attribs[name] = value+'';
  }
};

exports.attr = function(name, value) {
  // Set the value (with attr map support)
  if (typeof name === 'object' || value !== undefined) {
    if (typeof value === 'function') {
      return domEach(this, function(i, el) {
        setAttr(el, name, value.call(el, i, el.attribs[name]));
      });
    }
    return domEach(this, function(i, el) {
      if (!isTag(el)) return;

      if (typeof name === 'object') {
        _.each(name, function(name, key) {
          el.attribs[key] = name+'';
        });
      } else {
        setAttr(el, name, value);
      }
    });
  }

  return getAttr(this[0], name);
};

var setData = function(el, name, value) {
  if (typeof name === 'object') return _.extend(el.data, name);
  if (typeof name === 'string' && value !== undefined) {
    el.data[name] = value;
  } else if (typeof name === 'object') {
    _.exend(el.data, name);
  }
};

// Read the specified attribute from the equivalent HTML5 `data-*` attribute,
// and (if present) cache the value in the node's internal data store. If no
// attribute name is specified, read *all* HTML5 `data-*` attributes in this
// manner.
var readData = function(el, name) {
  var readAll = arguments.length === 1;
  var domNames, domName, jsNames, jsName, value, idx, length;

  if (readAll) {
    domNames = Object.keys(el.attribs).filter(function(attrName) {
      return attrName.slice(0, dataAttrPrefix.length) === dataAttrPrefix;
    });
    jsNames = domNames.map(function(domName) {
      return camelCase(domName.slice(dataAttrPrefix.length));
    });
  } else {
    domNames = [dataAttrPrefix + cssCase(name)];
    jsNames = [name];
  }

  for (idx = 0, length = domNames.length; idx < length; ++idx) {
    domName = domNames[idx];
    jsName = jsNames[idx];
    if (hasOwn.call(el.attribs, domName)) {
      value = el.attribs[domName];

      if (hasOwn.call(primitives, value)) {
        value = primitives[value];
      } else if (value === String(Number(value))) {
        value = Number(value);
      } else if (rbrace.test(value)) {
        value = JSON.parse(value);
      }

      el.data[jsName] = value;
    }
  }

  return readAll ? el.data : value;
};

exports.data = function(name, value) {
  var elem = this[0];

  if (!elem || !isTag(elem)) return;

  if (!elem.data) {
    elem.data = {};
  }

  // Return the entire data object if no data specified
  if (!name) {
    return readData(elem);
  }

  // Set the value (with attr map support)
  if (typeof name === 'object' || value !== undefined) {
    domEach(this, function(i, el) {
      setData(el, name, value);
    });
    return this;
  } else if (hasOwn.call(elem.data, name)) {
    return elem.data[name];
  }

  return readData(elem, name);
};

/**
 * Get the value of an element
 */

exports.val = function(value) {
  var querying = arguments.length === 0,
      element = this[0];

  if(!element) return;

  switch (element.name) {
    case 'textarea':
      return this.text(value);
    case 'input':
      switch (this.attr('type')) {
        case 'radio':
          var queryString = 'input[type=radio][name="' + this.attr('name') + '"]:checked';
          var parentEl, root;

          // Go up until we hit a form or root
          parentEl = this.closest('form');
          if (parentEl.length === 0) {
            root = (this.parents().last()[0] || this[0]).root;
            parentEl = this._make(root);
          }

          if (querying) {
            return parentEl.find(queryString).attr('value');
          } else {
            parentEl.find(':checked').removeAttr('checked');
            parentEl.find('input[type=radio][value="' + value + '"]').attr('checked', '');
            return this;
          }
          break;
        default:
          return this.attr('value', value);
      }
      return;
    case 'select':
      var option = this.find('option:selected'),
          returnValue;
      if (option === undefined) return undefined;
      if (!querying) {
        if (!this.attr().hasOwnProperty('multiple') && typeof value == 'object') {
          return this;
        }
        if (typeof value != 'object') {
          value = [value];
        }
        this.find('option').removeAttr('selected');
        for (var i = 0; i < value.length; i++) {
          this.find('option[value="' + value[i] + '"]').attr('selected', '');
        }
        return this;
      }
      returnValue = option.attr('value');
      if (this.attr().hasOwnProperty('multiple')) {
        returnValue = [];
        domEach(option, function(i, el) {
          returnValue.push(el.attribs.value);
        });
      }
      return returnValue;
    case 'option':
      if (!querying) {
        this.attr('value', value);
        return this;
      }
      return this.attr('value');
  }
};

/**
 * Remove an attribute
 */

var removeAttribute = function(elem, name) {
  if (!elem.attribs || !hasOwn.call(elem.attribs, name))
    return;

  delete elem.attribs[name];
};


exports.removeAttr = function(name) {
  domEach(this, function(i, elem) {
    removeAttribute(elem, name);
  });

  return this;
};

exports.hasClass = function(className) {
  return _.any(this, function(elem) {
    var attrs = elem.attribs,
        clazz = attrs && attrs['class'],
        idx = -1,
        end;

    if (clazz) {
      while ((idx = clazz.indexOf(className, idx+1)) > -1) {
        end = idx + className.length;

        if ((idx === 0 || rspace.test(clazz[idx-1]))
            && (end === clazz.length || rspace.test(clazz[end]))) {
          return true;
        }
      }
    }
  });
};

exports.addClass = function(value) {
  // Support functions
  if (typeof value === 'function') {
    return domEach(this, function(i, el) {
      var className = el.attribs['class'] || '';
      exports.addClass.call([el], value.call(el, i, className));
    });
  }

  // Return if no value or not a string or function
  if (!value || typeof value !== 'string') return this;

  var classNames = value.split(rspace),
      numElements = this.length;


  for (var i = 0; i < numElements; i++) {
    // If selected element isn't a tag, move on
    if (!isTag(this[i])) continue;

    // If we don't already have classes
    var className = getAttr(this[i], 'class'),
        numClasses,
        setClass;

    if (!className) {
      setAttr(this[i], 'class', classNames.join(' ').trim());
    } else {
      setClass = ' ' + className + ' ';
      numClasses = classNames.length;

      // Check if class already exists
      for (var j = 0; j < numClasses; j++) {
        var appendClass = classNames[j] + ' ';
        if (!~setClass.indexOf(' ' + appendClass))
          setClass += appendClass;
      }

      setAttr(this[i], 'class', setClass.trim());
    }
  }

  return this;
};

var splitClass = function(className) {
  return className ? className.trim().split(rspace) : [];
};

exports.removeClass = function(value) {
  var classes,
      numClasses,
      removeAll;

  // Handle if value is a function
  if (typeof value === 'function') {
    return domEach(this, function(i, el) {
      exports.removeClass.call(
        [el], value.call(el, i, el.attribs['class'] || '')
      );
    });
  }

  classes = splitClass(value);
  numClasses = classes.length;
  removeAll = arguments.length === 0;

  return domEach(this, function(i, el) {
    if (!isTag(el)) return;

    if (removeAll) {
      // Short circuit the remove all case as this is the nice one
      el.attribs.class = '';
    } else {
      var elClasses = splitClass(el.attribs.class),
          index,
          changed;

      for (var j = 0; j < numClasses; j++) {
        index = elClasses.indexOf(classes[j]);

        if (index >= 0) {
          elClasses.splice(index, 1);
          changed = true;

          // We have to do another pass to ensure that there are not duplicate
          // classes listed
          j--;
        }
      }
      if (changed) {
        el.attribs.class = elClasses.join(' ');
      }
    }
  });
};

exports.toggleClass = function(value, stateVal) {
  // Support functions
  if (typeof value === 'function') {
    return domEach(this, function(i, el) {
      exports.toggleClass.call(
        [el],
        value.call(el, i, el.attribs['class'] || '', stateVal),
        stateVal
      );
    });
  }

  // Return if no value or not a string or function
  if (!value || typeof value !== 'string') return this;

  var classNames = value.split(rspace),
    numClasses = classNames.length,
    state = typeof stateVal === 'boolean' ? stateVal ? 1 : -1 : 0,
    numElements = this.length,
    elementClasses,
    index;

  for (var i = 0; i < numElements; i++) {
    // If selected element isn't a tag, move on
    if (!isTag(this[i])) continue;

    elementClasses = splitClass(this[i].attribs.class);

    // Check if class already exists
    for (var j = 0; j < numClasses; j++) {
      // Check if the class name is currently defined
      index = elementClasses.indexOf(classNames[j]);

      // Add if stateValue === true or we are toggling and there is no value
      if (state >= 0 && index < 0) {
        elementClasses.push(classNames[j]);
      } else if (state <= 0 && index >= 0) {
        // Otherwise remove but only if the item exists
        elementClasses.splice(index, 1);
      }
    }

    this[i].attribs.class = elementClasses.join(' ');
  }

  return this;
};

exports.is = function (selector) {
  if (selector) {
    return this.filter(selector).length > 0;
  }
  return false;
};


},{"../utils":9,"lodash":61}],3:[function(require,module,exports){
var _ = require('lodash'),
    domEach = require('../utils').domEach;
var toString = Object.prototype.toString;

/**
 * Set / Get css.
 *
 * @param {String|Object} prop
 * @param {String} val
 * @return {self}
 * @api public
 */

exports.css = function(prop, val) {
  if (arguments.length === 2 ||
    // When `prop` is a "plain" object
    (toString.call(prop) === '[object Object]')) {
    return domEach(this, function(idx, el) {
      setCss(el, prop, val, idx);
    });
  } else {
    return getCss(this[0], prop);
  }
};

/**
 * Set styles of all elements.
 *
 * @param {String|Object} prop
 * @param {String} val
 * @param {Number} idx - optional index within the selection
 * @return {self}
 * @api private
 */

function setCss(el, prop, val, idx) {
  if ('string' == typeof prop) {
    var styles = getCss(el);
    if (typeof val === 'function') {
      val = val.call(el, idx, el);
    }

    if (val === '') {
      delete styles[prop];
    } else if (val != null) {
      styles[prop] = val;
    }

    el.attribs.style = stringify(styles);
  } else if ('object' == typeof prop) {
    Object.keys(prop).forEach(function(k){
      setCss(el, k, prop[k]);
    });
  }
}

/**
 * Get parsed styles of the first element.
 *
 * @param {String} prop
 * @return {Object}
 * @api private
 */

function getCss(el, prop) {
  var styles = parse(el.attribs.style);
  if (typeof prop === 'string') {
    return styles[prop];
  } else if (Array.isArray(prop)) {
    return _.pick(styles, prop);
  } else {
    return styles;
  }
}

/**
 * Stringify `obj` to styles.
 *
 * @param {Object} obj
 * @return {Object}
 * @api private
 */

function stringify(obj) {
  return Object.keys(obj || {})
    .reduce(function(str, prop){
      return str += ''
        + (str ? ' ' : '')
        + prop
        + ': '
        + obj[prop]
        + ';';
    }, '');
}

/**
 * Parse `styles`.
 *
 * @param {String} styles
 * @return {Object}
 * @api private
 */

function parse(styles) {
  styles = (styles || '').trim();

  if (!styles) return {};

  return styles
    .split(';')
    .reduce(function(obj, str){
      var n = str.indexOf(':');
      // skip if there is no :, or if it is the first/last character
      if (n < 1 || n === str.length-1) return obj;
      obj[str.slice(0,n).trim()] = str.slice(n+1).trim();
      return obj;
    }, {});
}

},{"../utils":9,"lodash":61}],4:[function(require,module,exports){
var _ = require('lodash'),
    parse = require('../parse'),
    $ = require('../static'),
    updateDOM = parse.update,
    evaluate = parse.evaluate,
    utils = require('../utils'),
    domEach = utils.domEach,
    slice = Array.prototype.slice;

// Create an array of nodes, recursing into arrays and parsing strings if
// necessary
exports._makeDomArray = function makeDomArray(elem) {
  if (elem == null) {
    return [];
  } else if (elem.cheerio) {
    return elem.get();
  } else if (Array.isArray(elem)) {
    return _.flatten(elem.map(makeDomArray, this));
  } else if (typeof elem === 'string') {
    return evaluate(elem, this.options);
  } else {
    return [elem];
  }
};

var _insert = function(concatenator) {
  return function() {
    var self = this,
        elems = slice.call(arguments),
        dom = this._makeDomArray(elems);

    if (typeof elems[0] === 'function') {
      return domEach(this, function(i, el) {
        dom = self._makeDomArray(elems[0].call(el, i, $.html(el.children)));
        concatenator(dom, el.children, el);
      });
    } else {
      return domEach(this, function(i, el) {
        concatenator(dom, el.children, el);
      });
    }
  };
};

/*
 * Modify an array in-place, removing some number of elements and adding new
 * elements directly following them.
 *
 * @param {Array} array Target array to splice.
 * @param {Number} spliceIdx Index at which to begin changing the array.
 * @param {Number} spliceCount Number of elements to remove from the array.
 * @param {Array} newElems Elements to insert into the array.
 *
 * @api private
 */
var uniqueSplice = function(array, spliceIdx, spliceCount, newElems, parent) {
  var spliceArgs = [spliceIdx, spliceCount].concat(newElems),
      prev = array[spliceIdx - 1] || null,
      next = array[spliceIdx] || null;
  var idx, len, prevIdx, node, oldParent;

  // Before splicing in new elements, ensure they do not already appear in the
  // current array.
  for (idx = 0, len = newElems.length; idx < len; ++idx) {
    node = newElems[idx];
    oldParent = node.parent || node.root;
    prevIdx = oldParent && oldParent.children.indexOf(newElems[idx]);

    if (oldParent && prevIdx > -1) {
      oldParent.children.splice(prevIdx, 1);
      if (parent === oldParent && spliceIdx > prevIdx) {
        spliceArgs[0]--;
      }
    }

    node.root = null;
    node.parent = parent;

    if (node.prev) {
      node.prev.next = node.next || null;
    }

    if (node.next) {
      node.next.prev = node.prev || null;
    }

    node.prev = newElems[idx - 1] || prev;
    node.next = newElems[idx + 1] || next;
  }

  if (prev) {
    prev.next = newElems[0];
  }
  if (next) {
    next.prev = newElems[newElems.length - 1];
  }

  return array.splice.apply(array, spliceArgs);
};

exports.append = _insert(function(dom, children, parent) {
  uniqueSplice(children, children.length, 0, dom, parent);
});

exports.prepend = _insert(function(dom, children, parent) {
  uniqueSplice(children, 0, 0, dom, parent);
});

exports.after = function() {
  var elems = slice.call(arguments),
      dom = this._makeDomArray(elems),
      self = this;

  domEach(this, function(i, el) {
    var parent = el.parent || el.root;
    if (!parent) {
      return;
    }

    var siblings = parent.children,
        index = siblings.indexOf(el);

    // If not found, move on
    if (!~index) return;

    if (typeof elems[0] === 'function') {
      dom = self._makeDomArray(elems[0].call(el, i, $.html(el.children)));
    }

    // Add element after `this` element
    uniqueSplice(siblings, ++index, 0, dom, parent);
  });

  return this;
};

exports.before = function() {
  var elems = slice.call(arguments),
      dom = this._makeDomArray(elems),
      self = this;

  domEach(this, function(i, el) {
    var parent = el.parent || el.root;
    if (!parent) {
      return;
    }

    var siblings = parent.children,
        index = siblings.indexOf(el);

    // If not found, move on
    if (!~index) return;

    if (typeof elems[0] === 'function') {
      dom = self._makeDomArray(elems[0].call(el, i, $.html(el.children)));
    }

    // Add element before `el` element
    uniqueSplice(siblings, index, 0, dom, parent);
  });

  return this;
};

/*
  remove([selector])
*/
exports.remove = function(selector) {
  var elems = this;

  // Filter if we have selector
  if (selector)
    elems = elems.filter(selector);

  domEach(elems, function(i, el) {
    var parent = el.parent || el.root;
    if (!parent) {
      return;
    }

    var siblings = parent.children,
        index = siblings.indexOf(el);

    if (!~index) return;


    siblings.splice(index, 1);
    if (el.prev) {
      el.prev.next = el.next;
    }
    if (el.next) {
      el.next.prev = el.prev;
    }
    el.prev = el.next = el.parent = el.root = null;
  });

  return this;
};

exports.replaceWith = function(content) {
  var self = this;

  domEach(this, function(i, el) {
    var parent = el.parent || el.root;
    if (!parent) {
      return;
    }

    var siblings = parent.children,
        dom = self._makeDomArray(typeof content === 'function' ? content.call(el, i, el) : content),
        index;

    // In the case that `dom` contains nodes that already exist in other
    // structures, ensure those nodes are properly removed.
    updateDOM(dom, null);

    index = siblings.indexOf(el);

    // Completely remove old element
    uniqueSplice(siblings, index, 1, dom, parent);
    el.parent = el.prev = el.next = el.root = null;
  });

  return this;
};

exports.empty = function() {
  domEach(this, function(i, el) {
    _.each(el.children, function(el) {
      el.next = el.prev = el.parent = null;
    });

    el.children.length = 0;
  });
  return this;
};

/**
 * Set/Get the HTML
 */
exports.html = function(str) {
  if (str === undefined) {
    if (!this[0] || !this[0].children) return null;
    return $.html(this[0].children, this.options);
  }

  var opts = this.options;

  domEach(this, function(i, el) {
    _.each(el.children, function(el) {
      el.next = el.prev = el.parent = null;
    });

    var content = str.cheerio ? str.clone().get() : evaluate(str, opts);

    updateDOM(content, el);
  });

  return this;
};

exports.toString = function() {
  return $.html(this);
};

exports.text = function(str) {
  // If `str` is undefined, act as a "getter"
  if (str === undefined) {
    return $.text(this);
  } else if (typeof str === 'function') {
    // Function support
    return domEach(this, function(i, el) {
      var $el = [el];
      return exports.text.call($el, str.call(el, i, $.text($el)));
    });
  }

  // Append text node to each selected elements
  domEach(this, function(i, el) {
    _.each(el.children, function(el) {
      el.next = el.prev = el.parent = null;
    });

    var elem = {
      data: str,
      type: 'text',
      parent: el,
      prev: null,
      next: null,
      children: []
    };

    updateDOM(elem, el);
  });

  return this;
};

exports.clone = function() {
  // Turn it into HTML, then recreate it,
  // Seems to be the easiest way to reconnect everything correctly
  return this._make($.html(this, this.options));
};

},{"../parse":7,"../static":8,"../utils":9,"lodash":61}],5:[function(require,module,exports){
var _ = require('lodash'),
    select = require('CSSselect'),
    utils = require('../utils'),
    domEach = utils.domEach,
    uniqueSort = require('htmlparser2').DomUtils.uniqueSort,
    isTag = utils.isTag;

exports.find = function(selectorOrHaystack) {
  var elems = _.reduce(this, function(memo, elem) {
    return memo.concat(_.filter(elem.children, isTag));
  }, []);
  var contains = this.constructor.contains;
  var haystack;

  if (selectorOrHaystack && typeof selectorOrHaystack !== 'string') {
    if (selectorOrHaystack.cheerio) {
      haystack = selectorOrHaystack.get();
    } else {
      haystack = [selectorOrHaystack];
    }

    return this._make(haystack.filter(function(elem) {
      var idx, len;
      for (idx = 0, len = this.length; idx < len; ++idx) {
        if (contains(this[idx], elem)) {
          return true;
        }
      }
    }, this));
  }

  return this._make(select(selectorOrHaystack, elems, this.options));
};

// Get the parent of each element in the current set of matched elements,
// optionally filtered by a selector.
exports.parent = function(selector) {
  var set = [];

  domEach(this, function(idx, elem) {
    var parentElem = elem.parent;
    if (parentElem && set.indexOf(parentElem) < 0) {
      set.push(parentElem);
    }
  });

  if (arguments.length) {
    set = exports.filter.call(set, selector, this);
  }

  return this._make(set);
};

exports.parents = function(selector) {
  var parentNodes = [];

  // When multiple DOM elements are in the original set, the resulting set will
  // be in *reverse* order of the original elements as well, with duplicates
  // removed.
  this.get().reverse().forEach(function(elem) {
    traverseParents(this, elem.parent, selector, Infinity)
      .forEach(function(node) {
        if (parentNodes.indexOf(node) === -1) {
          parentNodes.push(node);
        }
      }
    );
  }, this);

  return this._make(parentNodes);
};

exports.parentsUntil = function(selector, filter) {
  var parentNodes = [], untilNode, untilNodes;

  if (typeof selector === 'string') {
    untilNode = select(selector, this.parents().toArray(), this.options)[0];
  } else if (selector && selector.cheerio) {
    untilNodes = selector.toArray();
  } else if (selector) {
    untilNode = selector;
  }

  // When multiple DOM elements are in the original set, the resulting set will
  // be in *reverse* order of the original elements as well, with duplicates
  // removed.

  this.toArray().reverse().forEach(function(elem) {
    while ((elem = elem.parent)) {
      if ((untilNode && elem !== untilNode) ||
        (untilNodes && untilNodes.indexOf(elem) === -1) ||
        (!untilNode && !untilNodes)) {
        if (isTag(elem) && parentNodes.indexOf(elem) === -1) { parentNodes.push(elem); }
      } else {
        break;
      }
    }
  }, this);

  return this._make(filter ? select(filter, parentNodes, this.options) : parentNodes);
};

// For each element in the set, get the first element that matches the selector
// by testing the element itself and traversing up through its ancestors in the
// DOM tree.
exports.closest = function(selector) {
  var set = [];

  if (!selector) {
    return this._make(set);
  }

  domEach(this, function(idx, elem) {
    var closestElem = traverseParents(this, elem, selector, 1)[0];

    // Do not add duplicate elements to the set
    if (closestElem && set.indexOf(closestElem) < 0) {
      set.push(closestElem);
    }
  }.bind(this));

  return this._make(set);
};

exports.next = function(selector) {
  if (!this[0]) { return this; }
  var elems = [];

  _.forEach(this, function(elem) {
    while ((elem = elem.next)) {
      if (isTag(elem)) {
        elems.push(elem);
        return;
      }
    }
  });

  return selector ?
    exports.filter.call(elems, selector, this) :
    this._make(elems);
};

exports.nextAll = function(selector) {
  if (!this[0]) { return this; }
  var elems = [];

  _.forEach(this, function(elem) {
    while ((elem = elem.next)) {
      if (isTag(elem) && elems.indexOf(elem) === -1) {
        elems.push(elem);
      }
    }
  });

  return selector ?
    exports.filter.call(elems, selector, this) :
    this._make(elems);
};

exports.nextUntil = function(selector, filterSelector) {
  if (!this[0]) { return this; }
  var elems = [], untilNode, untilNodes;

  if (typeof selector === 'string') {
    untilNode = select(selector, this.nextAll().get(), this.options)[0];
  } else if (selector && selector.cheerio) {
    untilNodes = selector.get();
  } else if (selector) {
    untilNode = selector;
  }

  _.forEach(this, function(elem) {
    while ((elem = elem.next)) {
      if ((untilNode && elem !== untilNode) ||
        (untilNodes && untilNodes.indexOf(elem) === -1) ||
        (!untilNode && !untilNodes)) {
        if (isTag(elem) && elems.indexOf(elem) === -1) {
          elems.push(elem);
        }
      } else {
        break;
      }
    }
  });

  return filterSelector ?
    exports.filter.call(elems, filterSelector, this) :
    this._make(elems);
};

exports.prev = function(selector) {
  if (!this[0]) { return this; }
  var elems = [];

  _.forEach(this, function(elem) {
    while ((elem = elem.prev)) {
      if (isTag(elem)) {
        elems.push(elem);
        return;
      }
    }
  });

  return selector ?
    exports.filter.call(elems, selector, this) :
    this._make(elems);
};

exports.prevAll = function(selector) {
  if (!this[0]) { return this; }
  var elems = [];

  _.forEach(this, function(elem) {
    while ((elem = elem.prev)) {
      if (isTag(elem) && elems.indexOf(elem) === -1) {
        elems.push(elem);
      }
    }
  });

  return selector ?
    exports.filter.call(elems, selector, this) :
    this._make(elems);
};

exports.prevUntil = function(selector, filterSelector) {
  if (!this[0]) { return this; }
  var elems = [], untilNode, untilNodes;

  if (typeof selector === 'string') {
    untilNode = select(selector, this.prevAll().get(), this.options)[0];
  } else if (selector && selector.cheerio) {
    untilNodes = selector.get();
  } else if (selector) {
    untilNode = selector;
  }

  _.forEach(this, function(elem) {
    while ((elem = elem.prev)) {
      if ((untilNode && elem !== untilNode) ||
        (untilNodes && untilNodes.indexOf(elem) === -1) ||
        (!untilNode && !untilNodes)) {
        if (isTag(elem) && elems.indexOf(elem) === -1) {
          elems.push(elem);
        }
      } else {
        break;
      }
    }
  });

  return filterSelector ?
    exports.filter.call(elems, filterSelector, this) :
    this._make(elems);
};

exports.siblings = function(selector) {
  var parent = this.parent();

  var elems = _.filter(
    parent ? parent.children() : this.siblingsAndMe(),
    function(elem) { return isTag(elem) && !this.is(elem); },
    this
  );

  if (selector !== undefined) {
    return exports.filter.call(elems, selector, this);
  } else {
    return this._make(elems);
  }
};

exports.children = function(selector) {

  var elems = _.reduce(this, function(memo, elem) {
    return memo.concat(_.filter(elem.children, isTag));
  }, []);

  if (selector === undefined) return this._make(elems);
  else if (typeof selector === 'number') return this._make(elems[selector]);

  return exports.filter.call(elems, selector, this);
};

exports.contents = function() {
  return this._make(_.reduce(this, function(all, elem) {
    all.push.apply(all, elem.children);
    return all;
  }, []));
};

exports.each = function(fn) {
  var i = 0, len = this.length;
  while (i < len && fn.call(this[i], i, this[i]) !== false) ++i;
  return this;
};

exports.map = function(fn) {
  return this._make(_.reduce(this, function(memo, el, i) {
    var val = fn.call(el, i, el);
    return val == null ? memo : memo.concat(val);
  }, []));
};

var makeFilterMethod = function(filterFn) {
  return function(match, container) {
    var testFn;
    container = container || this;

    if (typeof match === 'string') {
      testFn = select.compile(match, container.options);
    } else if (typeof match === 'function') {
      testFn = function(el, i) {
        return match.call(el, i, el);
      };
    } else if (match.cheerio) {
      testFn = match.is.bind(match);
    } else {
      testFn = function(el) {
        return match === el;
      };
    }

    return container._make(filterFn(this, testFn));
  };
};

exports.filter = makeFilterMethod(_.filter);
exports.not = makeFilterMethod(_.reject);

exports.has = function(selectorOrHaystack) {
  var that = this;
  return exports.filter.call(this, function() {
    return that._make(this).find(selectorOrHaystack).length > 0;
  });
};

exports.first = function() {
  return this.length > 1 ? this._make(this[0]) : this;
};

exports.last = function() {
  return this.length > 1 ? this._make(this[this.length - 1]) : this;
};

// Reduce the set of matched elements to the one at the specified index.
exports.eq = function(i) {
  i = +i;

  // Use the first identity optimization if possible
  if (i === 0 && this.length <= 1) return this;

  if (i < 0) i = this.length + i;
  return this[i] ? this._make(this[i]) : this._make([]);
};

// Retrieve the DOM elements matched by the jQuery object.
exports.get = function(i) {
  if (i == null) {
    return Array.prototype.slice.call(this);
  } else {
    return this[i < 0 ? (this.length + i) : i];
  }
};

// Search for a given element from among the matched elements.
exports.index = function(selectorOrNeedle) {
  var $haystack, needle;

  if (arguments.length === 0) {
    $haystack = this.parent().children();
    needle = this[0];
  } else if (typeof selectorOrNeedle === 'string') {
    $haystack = this._make(selectorOrNeedle);
    needle = this[0];
  } else {
    $haystack = this;
    needle = selectorOrNeedle.cheerio ? selectorOrNeedle[0] : selectorOrNeedle;
  }

  return $haystack.get().indexOf(needle);
};

exports.slice = function() {
  return this._make([].slice.apply(this, arguments));
};

function traverseParents(self, elem, selector, limit) {
  var elems = [];
  while (elem && elems.length < limit) {
    if (!selector || exports.filter.call([elem], selector, self).length) {
      elems.push(elem);
    }
    elem = elem.parent;
  }
  return elems;
}

// End the most recent filtering operation in the current chain and return the
// set of matched elements to its previous state.
exports.end = function() {
  return this.prevObject || this._make([]);
};

exports.add = function(other, context) {
  var selection = this._make(other, context);
  var contents = uniqueSort(selection.get().concat(this.get()));

  for (var i = 0; i < contents.length; ++i) {
    selection[i] = contents[i];
  }
  selection.length = contents.length;

  return selection;
};

// Add the previous set of elements on the stack to the current set, optionally
// filtered by a selector.
exports.addBack = function(selector) {
  return this.add(
    arguments.length ? this.prevObject.filter(selector) : this.prevObject
  );
};

},{"../utils":9,"CSSselect":10,"htmlparser2":44,"lodash":61}],6:[function(require,module,exports){
/*
  Module dependencies
*/

var parse = require('./parse'),
    _ = require('lodash');

/*
 * The API
 */

var api = [
  require('./api/attributes'),
  require('./api/traversing'),
  require('./api/manipulation'),
  require('./api/css')
];

/*
 * A simple way to check for HTML strings or ID strings
 */

var quickExpr = /^(?:[^#<]*(<[\w\W]+>)[^>]*$|#([\w\-]*)$)/;

/*
 * Instance of cheerio
 */

var Cheerio = module.exports = function(selector, context, root, options) {
  if (!(this instanceof Cheerio)) return new Cheerio(selector, context, root, options);

  this.options = _.defaults(options || {}, this.options);

  // $(), $(null), $(undefined), $(false)
  if (!selector) return this;

  if (root) {
    if (typeof root === 'string') root = parse(root, this.options);
    this._root = Cheerio.call(this, root);
  }

  // $($)
  if (selector.cheerio) return selector;

  // $(dom)
  if (isNode(selector))
    selector = [selector];

  // $([dom])
  if (Array.isArray(selector)) {
    _.forEach(selector, function(elem, idx) {
      this[idx] = elem;
    }, this);
    this.length = selector.length;
    return this;
  }

  // $(<html>)
  if (typeof selector === 'string' && isHtml(selector)) {
    return Cheerio.call(this, parse(selector, this.options).children);
  }

  // If we don't have a context, maybe we have a root, from loading
  if (!context) {
    context = this._root;
  } else if (typeof context === 'string') {
    if (isHtml(context)) {
      // $('li', '<ul>...</ul>')
      context = parse(context, this.options);
      context = Cheerio.call(this, context);
    } else {
      // $('li', 'ul')
      selector = [context, selector].join(' ');
      context = this._root;
    }
  // $('li', node), $('li', [nodes])
  } else if (!context.cheerio) {
    context = Cheerio.call(this, context);
  }

  // If we still don't have a context, return
  if (!context) return this;

  // #id, .class, tag
  return context.find(selector);
};

/**
 * Mix in `static`
 */

_.extend(Cheerio, require('./static'));

/*
 * Set a signature of the object
 */

Cheerio.prototype.cheerio = '[cheerio object]';

/*
 * Cheerio default options
 */

Cheerio.prototype.options = {
  withDomLvl1: true,
  normalizeWhitespace: false,
  xmlMode: false,
  decodeEntities: true
};

/*
 * Make cheerio an array-like object
 */

Cheerio.prototype.length = 0;
Cheerio.prototype.splice = Array.prototype.splice;

/*
 * Check if string is HTML
 */
var isHtml = function(str) {
  // Faster than running regex, if str starts with `<` and ends with `>`, assume it's HTML
  if (str.charAt(0) === '<' && str.charAt(str.length - 1) === '>' && str.length >= 3) return true;

  // Run the regex
  var match = quickExpr.exec(str);
  return !!(match && match[1]);
};

/*
 * Make a cheerio object
 *
 * @api private
 */

Cheerio.prototype._make = function(dom, context) {
  var cheerio = new Cheerio(dom, context, this._root, this.options);
  cheerio.prevObject = this;
  return cheerio;
};

/**
 * Turn a cheerio object into an array
 *
 * @deprecated
 */

Cheerio.prototype.toArray = function() {
  return this.get();
};

/**
 * Plug in the API
 */
api.forEach(function(mod) {
  _.extend(Cheerio.prototype, mod);
});

var isNode = function(obj) {
  return obj.name || obj.type === 'text' || obj.type === 'comment';
};

},{"./api/attributes":2,"./api/css":3,"./api/manipulation":4,"./api/traversing":5,"./parse":7,"./static":8,"lodash":61}],7:[function(require,module,exports){
(function (Buffer){
/*
  Module Dependencies
*/
var htmlparser = require('htmlparser2');

/*
  Parser
*/
exports = module.exports = function(content, options) {
  var dom = exports.evaluate(content, options),
      // Generic root element
      root = exports.evaluate('<root></root>', options)[0];

  root.type = 'root';

  // Update the dom using the root
  exports.update(dom, root);

  return root;
};

exports.evaluate = function(content, options) {
  // options = options || $.fn.options;

  var dom;

  if (typeof content === 'string' || Buffer.isBuffer(content)) {
    dom = htmlparser.parseDOM(content, options);
  } else {
    dom = content;
  }

  return dom;
};

/*
  Update the dom structure, for one changed layer
*/
exports.update = function(arr, parent) {
  // normalize
  if (!Array.isArray(arr)) arr = [arr];

  // Update parent
  if (parent) {
    parent.children = arr;
  } else {
    parent = null;
  }

  // Update neighbors
  for (var i = 0; i < arr.length; i++) {
    var node = arr[i];

    // Cleanly remove existing nodes from their previous structures.
    var oldParent = node.parent || node.root,
        oldSiblings = oldParent && oldParent.children;
    if (oldSiblings && oldSiblings !== arr) {
      oldSiblings.splice(oldSiblings.indexOf(node), 1);
      if (node.prev) {
        node.prev.next = node.next;
      }
      if (node.next) {
        node.next.prev = node.prev;
      }
    }

    if (parent) {
      node.prev = arr[i - 1] || null;
      node.next = arr[i + 1] || null;
    } else {
      node.prev = node.next = null;
    }

    if (parent && parent.type === 'root') {
      node.root = parent;
      node.parent = null;
    } else {
      node.root = null;
      node.parent = parent;
    }
  }

  return parent;
};

// module.exports = $.extend(exports);

}).call(this,require("buffer").Buffer)
},{"buffer":83,"htmlparser2":44}],8:[function(require,module,exports){
/**
 * Module dependencies
 */

var select = require('CSSselect'),
    parse = require('./parse'),
    render = require('dom-serializer'),
    _ = require('lodash');

/**
 * $.load(str)
 */

exports.load = function(content, options) {
  var Cheerio = require('./cheerio');

  options = _.defaults(options || {}, Cheerio.prototype.options);

  var root = parse(content, options);

  var initialize = function(selector, context, r, opts) {
    opts = _.defaults(opts || {}, options);
    return Cheerio.call(this, selector, context, r || root, opts);
  };

  // Ensure that selections created by the "loaded" `initialize` function are
  // true Cheerio instances.
  initialize.prototype = Cheerio.prototype;

  // Add in the static methods
  _.merge(initialize, exports);

  // Add in the root
  initialize._root = root;
  // store options
  initialize._options = options;

  return initialize;
};

/**
 * $.html([selector | dom])
 */

exports.html = function(dom, options) {
  var Cheerio = require('./cheerio');

  // be flexible about parameters, sometimes we call html(),
  // with options as only parameter
  // check dom argument for dom element specific properties
  // assume there is no 'length' or 'type' properties in the options object
  if (Object.prototype.toString.call(dom) === '[object Object]' && !options && !('length' in dom) && !('type' in dom))
  {
    options = dom;
    dom = undefined;
  }

  // sometimes $.html() used without preloading html
  // so fallback non existing options to the default ones
  options = _.defaults(options || {}, this._options, Cheerio.prototype.options);

  if (dom) {
    dom = (typeof dom === 'string') ? select(dom, this._root, options) : dom;
    return render(dom, options);
  } else if (this._root && this._root.children) {
    return render(this._root.children, options);
  } else {
    return '';
  }
};

/**
 * $.xml([selector | dom])
 */

exports.xml = function(dom) {
  if (dom) {
    dom = (typeof dom === 'string') ? select(dom, this._root, this.options) : dom;
    return render(dom, { xmlMode: true });
  } else if (this._root && this._root.children) {
    return render(this._root.children, { xmlMode: true });
  } else {
    return '';
  }
};

/**
 * $.text(dom)
 */

exports.text = function(elems) {
  if (!elems) return '';

  var ret = '',
      len = elems.length,
      elem;

  for (var i = 0; i < len; i ++) {
    elem = elems[i];
    if (elem.type === 'text') ret += elem.data;
    else if (elem.children && elem.type !== 'comment') {
      ret += exports.text(elem.children);
    }
  }

  return ret;
};

/**
 * $.parseHTML(data [, context ] [, keepScripts ])
 * Parses a string into an array of DOM nodes. The `context` argument has no
 * meaning for Cheerio, but it is maintained for API compatibility with jQuery.
 */
exports.parseHTML = function(data, context, keepScripts) {
  var parsed;

  if (!data || typeof data !== 'string') {
    return null;
  }

  if (typeof context === 'boolean') {
    keepScripts = context;
  }

  parsed = this.load(data);
  if (!keepScripts) {
    parsed('script').remove();
  }

  return parsed.root()[0].children;
};

/**
 * $.root()
 */
exports.root = function() {
  return this(this._root);
};

/**
 * $.contains()
 */
exports.contains = function(container, contained) {

  // According to the jQuery API, an element does not "contain" itself
  if (contained === container) {
    return false;
  }

  // Step up the descendants, stopping when the root element is reached
  // (signaled by `.parent` returning a reference to the same object)
  while (contained && contained !== contained.parent) {
    contained = contained.parent;
    if (contained === container) {
      return true;
    }
  }

  return false;
};

},{"./cheerio":6,"./parse":7,"CSSselect":10,"dom-serializer":27,"lodash":61}],9:[function(require,module,exports){
/**
 * HTML Tags
 */

var tags = { tag: true, script: true, style: true };

/**
 * Check if the DOM element is a tag
 *
 * isTag(type) includes <script> and <style> tags
 */

exports.isTag = function(type) {
  if (type.type) type = type.type;
  return tags[type] || false;
};

/**
 * Convert a string to camel case notation.
 * @param  {String} str String to be converted.
 * @return {String}     String in camel case notation.
 */

exports.camelCase = function(str) {
  return str.replace(/[_.-](\w|$)/g, function(_, x) {
    return x.toUpperCase();
  });
};

/**
 * Convert a string from camel case to "CSS case", where word boundaries are
 * described by hyphens ("-") and all characters are lower-case.
 * @param  {String} str String to be converted.
 * @return {string}     String in "CSS case".
 */
exports.cssCase = function(str) {
  return str.replace(/[A-Z]/g, '-$&').toLowerCase();
};

/**
 * Iterate over each DOM element without creating intermediary Cheerio instances.
 *
 * This is indented for use internally to avoid otherwise unnecessary memory pressure introduced
 * by _make.
 */

exports.domEach = function(cheerio, fn) {
  var i = 0, len = cheerio.length;
  while (i < len && fn(i, cheerio[i]) !== false) ++i;
  return cheerio;
};

},{}],10:[function(require,module,exports){
"use strict";

module.exports = CSSselect;

var Pseudos       = require("./lib/pseudos.js"),
    DomUtils      = require("domutils"),
    findOne       = DomUtils.findOne,
    findAll       = DomUtils.findAll,
    getChildren   = DomUtils.getChildren,
    removeSubsets = DomUtils.removeSubsets,
    falseFunc     = require("./lib/basefunctions.js").falseFunc,
    compile       = require("./lib/compile.js"),
    compileUnsafe = compile.compileUnsafe;

function getSelectorFunc(searchFunc){
	return function select(query, elems, options){
		if(typeof query !== "function") query = compileUnsafe(query, options);
		if(!Array.isArray(elems)) elems = getChildren(elems);
		else elems = removeSubsets(elems);
		return searchFunc(query, elems);
	};
}

var selectAll = getSelectorFunc(function selectAll(query, elems){
	return (query === falseFunc || !elems || elems.length === 0) ? [] : findAll(query, elems);
});

var selectOne = getSelectorFunc(function selectOne(query, elems){
	return (query === falseFunc || !elems || elems.length === 0) ? null : findOne(query, elems);
});

function is(elem, query, options){
	return (typeof query === "function" ? query : compile(query, options))(elem);
}

/*
	the exported interface
*/
function CSSselect(query, elems, options){
	return selectAll(query, elems, options);
}

CSSselect.compile = compile;
CSSselect.filters = Pseudos.filters;
CSSselect.pseudos = Pseudos.pseudos;

CSSselect.selectAll = selectAll;
CSSselect.selectOne = selectOne;

CSSselect.is = is;

//legacy methods (might be removed)
CSSselect.parse = compile;
CSSselect.iterate = selectAll;

},{"./lib/basefunctions.js":12,"./lib/compile.js":13,"./lib/pseudos.js":16,"domutils":19}],11:[function(require,module,exports){
var DomUtils  = require("domutils"),
    hasAttrib = DomUtils.hasAttrib,
    getAttributeValue = DomUtils.getAttributeValue,
    falseFunc = require("./basefunctions.js").falseFunc;

//https://github.com/slevithan/XRegExp/blob/master/src/xregexp.js#L469
var reChars = /[-[\]{}()*+?.,\\^$|#\s]/g;

/*
	attribute selectors
*/

var attributeRules = {
	__proto__: null,
	equals: function(next, data){
		var name  = data.name,
		    value = data.value;

		if(data.ignoreCase){
			value = value.toLowerCase();

			return function equalsIC(elem){
				var attr = getAttributeValue(elem, name);
				return attr != null && attr.toLowerCase() === value && next(elem);
			};
		}

		return function equals(elem){
			return getAttributeValue(elem, name) === value && next(elem);
		};
	},
	hyphen: function(next, data){
		var name  = data.name,
		    value = data.value,
		    len = value.length;

		if(data.ignoreCase){
			value = value.toLowerCase();

			return function hyphenIC(elem){
				var attr = getAttributeValue(elem, name);
				return attr != null &&
						(attr.length === len || attr.charAt(len) === "-") &&
						attr.substr(0, len).toLowerCase() === value &&
						next(elem);
			};
		}

		return function hyphen(elem){
			var attr = getAttributeValue(elem, name);
			return attr != null &&
					attr.substr(0, len) === value &&
					(attr.length === len || attr.charAt(len) === "-") &&
					next(elem);
		};
	},
	element: function(next, data){
		var name = data.name,
		    value = data.value;

		if(/\s/.test(value)){
			return falseFunc;
		}

		value = value.replace(reChars, "\\$&");

		var pattern = "(?:^|\\s)" + value + "(?:$|\\s)",
		    flags = data.ignoreCase ? "i" : "",
		    regex = new RegExp(pattern, flags);

		return function element(elem){
			var attr = getAttributeValue(elem, name);
			return attr != null && regex.test(attr) && next(elem);
		};
	},
	exists: function(next, data){
		var name = data.name;
		return function exists(elem){
			return hasAttrib(elem, name) && next(elem);
		};
	},
	start: function(next, data){
		var name  = data.name,
		    value = data.value,
		    len = value.length;

		if(len === 0){
			return falseFunc;
		}
		
		if(data.ignoreCase){
			value = value.toLowerCase();

			return function startIC(elem){
				var attr = getAttributeValue(elem, name);
				return attr != null && attr.substr(0, len).toLowerCase() === value && next(elem);
			};
		}

		return function start(elem){
			var attr = getAttributeValue(elem, name);
			return attr != null && attr.substr(0, len) === value && next(elem);
		};
	},
	end: function(next, data){
		var name  = data.name,
		    value = data.value,
		    len   = -value.length;

		if(len === 0){
			return falseFunc;
		}

		if(data.ignoreCase){
			value = value.toLowerCase();

			return function endIC(elem){
				var attr = getAttributeValue(elem, name);
				return attr != null && attr.substr(len).toLowerCase() === value && next(elem);
			};
		}

		return function end(elem){
			var attr = getAttributeValue(elem, name);
			return attr != null && attr.substr(len) === value && next(elem);
		};
	},
	any: function(next, data){
		var name  = data.name,
		    value = data.value;

		if(value === ""){
			return falseFunc;
		}

		if(data.ignoreCase){
			var regex = new RegExp(value.replace(reChars, "\\$&"), "i");

			return function anyIC(elem){
				var attr = getAttributeValue(elem, name);
				return attr != null && regex.test(attr) && next(elem);
			};
		}

		return function any(elem){
			var attr = getAttributeValue(elem, name);
			return attr != null && attr.indexOf(value) >= 0 && next(elem);
		};
	},
	not: function(next, data){
		var name  = data.name,
		    value = data.value;

		if(value === ""){
			return function notEmpty(elem){
				return !!getAttributeValue(elem, name) && next(elem);
			};
		} else if(data.ignoreCase){
			value = value.toLowerCase();

			return function notIC(elem){
				var attr = getAttributeValue(elem, name);
				return attr != null && attr.toLowerCase() !== value && next(elem);
			};
		}

		return function not(elem){
			return getAttributeValue(elem, name) !== value && next(elem);
		};
	}
};

module.exports = {
	compile: function(next, data){
		return attributeRules[data.action](next, data);
	},
	rules: attributeRules
};

},{"./basefunctions.js":12,"domutils":19}],12:[function(require,module,exports){
module.exports = {
	trueFunc: function trueFunc(){
		return true;
	},
	falseFunc: function falseFunc(){
		return false;
	}
};
},{}],13:[function(require,module,exports){
/*
	compiles a selector to an executable function
*/

module.exports = compile;
module.exports.compileUnsafe = compileUnsafe;

var parse       = require("CSSwhat"),
    DomUtils    = require("domutils"),
    isTag       = DomUtils.isTag,
    Rules       = require("./general.js"),
    sortRules   = require("./sort.js"),
    BaseFuncs   = require("./basefunctions.js"),
    trueFunc    = BaseFuncs.trueFunc,
    falseFunc   = BaseFuncs.falseFunc;

function compile(selector, options){
	var next = compileUnsafe(selector, options);

	return function base(elem){
		return isTag(elem) && next(elem);
	};
}

function compileUnsafe(selector, options){
	return parse(selector, options)
		.map(compileRules)
		.reduce(reduceRules, falseFunc);
}

function compileRules(arr){
	if(arr.length === 0) return falseFunc;
	return sortRules(arr).reduce(function(func, rule){
		if(func === falseFunc) return func;
		return Rules[rule.type](func, rule);
	}, trueFunc);
}

function reduceRules(a, b){
	if(b === falseFunc || a === trueFunc){
		return a;
	}
	if(a === falseFunc || b === trueFunc){
		return b;
	}

	return function combine(elem){
		return a(elem) || b(elem);
	};	
}

//:not and :has have to compile selectors
//doing this in lib/pseudos.js would lead to circular dependencies,
//so we add them here

var Pseudos     = require("./pseudos.js"),
    filters     = Pseudos.filters,
    isParent    = Pseudos.pseudos.parent,
    existsOne   = DomUtils.existsOne,
    getChildren = DomUtils.getChildren;

filters.not = function(next, select){
	var func = compileUnsafe(select);

	if(func === falseFunc) return next;
	if(func === trueFunc)  return falseFunc;

	return function(elem){
		return !func(elem) && next(elem);
	};
};

filters.has = function(next, selector){
	var func = compile(selector);

	if(func === falseFunc) return falseFunc;
	if(func === trueFunc)  return function(elem){
			return isParent(elem) && next(elem);
		};

	return function has(elem){
		return next(elem) && existsOne(func, getChildren(elem));
	};
};

},{"./basefunctions.js":12,"./general.js":14,"./pseudos.js":16,"./sort.js":17,"CSSwhat":18,"domutils":19}],14:[function(require,module,exports){
var DomUtils    = require("domutils"),
    isTag       = DomUtils.isTag,
    getParent   = DomUtils.getParent,
    getChildren = DomUtils.getChildren,
    getSiblings = DomUtils.getSiblings,
    getName     = DomUtils.getName;

/*
	all available rules
*/
module.exports = {
	__proto__: null,

	attribute: require("./attributes.js").compile,
	pseudo: require("./pseudos.js").compile,

	//tags
	tag: function(next, data){
		var name = data.name;
		return function tag(elem){
			return getName(elem) === name && next(elem);
		};
	},

	//traversal
	descendant: function(next){
		return function descendant(elem){
			var found = false;

			while(!found && (elem = getParent(elem))){
				found = next(elem);
			}

			return found;
		};
	},
	parent: function(next){
		return function parent(elem){
			return getChildren(elem).some(next);
		};
	},
	child: function(next){
		return function child(elem){
			var parent = getParent(elem);
			return !!parent && next(parent);
		};
	},
	sibling: function(next){
		return function sibling(elem){
			var siblings = getSiblings(elem);

			for(var i = 0; i < siblings.length; i++){
				if(isTag(siblings[i])){
					if(siblings[i] === elem) break;
					if(next(siblings[i])) return true;
				}
			}

			return false;
		};
	},
	adjacent: function(next){
		return function adjacent(elem){
			var siblings = getSiblings(elem),
			    lastElement;

			for(var i = 0; i < siblings.length; i++){
				if(isTag(siblings[i])){
					if(siblings[i] === elem) break;
					lastElement = siblings[i];
				}
			}

			return !!lastElement && next(lastElement);
		};
	},
	universal: function(next){
		return next;
	}
};
},{"./attributes.js":11,"./pseudos.js":16,"domutils":19}],15:[function(require,module,exports){
var BaseFuncs = require("./basefunctions.js"),
    trueFunc  = BaseFuncs.trueFunc,
    falseFunc = BaseFuncs.falseFunc;

module.exports = function nthCheck(formula){
	return compile(parse(formula));
};

module.exports.parse = parse;
module.exports.compile = compile;

//following http://www.w3.org/TR/css3-selectors/#nth-child-pseudo

//[ ['-'|'+']? INTEGER? {N} [ S* ['-'|'+'] S* INTEGER ]?
var re_nthElement = /^([+\-]?\d*n)?\s*(?:([+\-]?)\s*(\d+))?$/;

/*
	parses a nth-check formula, returns an array of two numbers
*/
function parse(formula){
	formula = formula.trim().toLowerCase();

	if(formula === "even"){
		return [2, 0];
	} else if(formula === "odd"){
		return [2, 1];
	} else {
		var parsed = formula.match(re_nthElement);

		if(!parsed){
			throw new SyntaxError("n-th rule couldn't be parsed ('" + formula + "')");
		}

		var a;

		if(parsed[1]){
			a = parseInt(parsed[1], 10);
			if(!a){
				if(parsed[1].charAt(0) === "-") a = -1;
				else a = 1;
			}
		} else a = 0;

		return [
			a,
			parsed[3] ? parseInt((parsed[2] || "") + parsed[3], 10) : 0
		];
	}
}

/*
	returns a function that checks if an elements index matches the given rule
	highly optimized to return the fastest solution
*/
function compile(parsed){
	var a = parsed[0],
	    b = parsed[1] - 1;

	//when b <= 0, a*n won't be possible for any matches when a < 0
	//besides, the specification says that no element is matched when a and b are 0
	if(b < 0 && a <= 0) return falseFunc;

	//when a is in the range -1..1, it matches any element (so only b is checked)
	if(a ===-1) return function(pos){ return pos <= b; };
	if(a === 0) return function(pos){ return pos === b; };
	//when b <= 0 and a === 1, they match any element
	if(a === 1) return b < 0 ? trueFunc : function(pos){ return pos >= b; };

	//when a > 0, modulo can be used to check if there is a match
	var bMod = b % a;
	if(bMod < 0) bMod += a;

	if(a > 1){
		return function(pos){
			return pos >= b && pos % a === bMod;
		};
	}

	a *= -1; //make `a` positive

	return function(pos){
		return pos <= b && pos % a === bMod;
	};
}
},{"./basefunctions.js":12}],16:[function(require,module,exports){
/*
	pseudo selectors
	
	---
	
	they are available in two forms:
	* filters called when the selector 
	  is compiled and return a function
	  that needs to return next()
	* pseudos get called on execution
	  they need to return a boolean
*/

var DomUtils    = require("domutils"),
    isTag       = DomUtils.isTag,
    getText     = DomUtils.getText,
    getParent   = DomUtils.getParent,
    getChildren = DomUtils.getChildren,
    getSiblings = DomUtils.getSiblings,
    hasAttrib   = DomUtils.hasAttrib,
    getName     = DomUtils.getName,
    getAttribute= DomUtils.getAttributeValue,
    getNCheck   = require("./nth-check.js"),
    checkAttrib = require("./attributes.js").rules.equals,
    BaseFuncs   = require("./basefunctions.js"),
    trueFunc    = BaseFuncs.trueFunc,
    falseFunc   = BaseFuncs.falseFunc;

//helper methods
function getFirstElement(elems){
	for(var i = 0; elems && i < elems.length; i++){
		if(isTag(elems[i])) return elems[i];
	}
}

function getAttribFunc(name, value){
	var data = {name: name, value: value};
	return function attribFunc(next){
		return checkAttrib(next, data);
	};
}

function getChildFunc(next){
	return function(elem){
		return !!getParent(elem) && next(elem);
	};
}

var filters = {
	contains: function(next, text){
		if(
			(text.charAt(0) === "\"" || text.charAt(0) === "'") &&
			text.charAt(0) === text.substr(-1)
		){
			text = text.slice(1, -1);
		}
		return function contains(elem){
			return getText(elem).indexOf(text) >= 0 && next(elem);
		};
	},

	//location specific methods
	//first- and last-child methods return as soon as they find another element
	"first-child": function(next){
		return function firstChild(elem){
			return getFirstElement(getSiblings(elem)) === elem && next(elem);
		};
	},
	"last-child": function(next){
		return function lastChild(elem){
			var siblings = getSiblings(elem);

			for(var i = siblings.length - 1; i >= 0; i--){
				if(siblings[i] === elem) return next(elem);
				if(isTag(siblings[i])) break;
			}

			return false;
		};
	},
	"first-of-type": function(next){
		return function firstOfType(elem){
			var siblings = getSiblings(elem);

			for(var i = 0; i < siblings.length; i++){
				if(isTag(siblings[i])){
					if(siblings[i] === elem) return next(elem);
					if(getName(siblings[i]) === getName(elem)) break;
				}
			}

			return false;
		};
	},
	"last-of-type": function(next){
		return function lastOfType(elem){
			var siblings = getSiblings(elem);

			for(var i = siblings.length-1; i >= 0; i--){
				if(isTag(siblings[i])){
					if(siblings[i] === elem) return next(elem);
					if(getName(siblings[i]) === getName(elem)) break;
				}
			}

			return false;
		};
	},
	"only-of-type": function(next){
		return function onlyOfType(elem){
			var siblings = getSiblings(elem);

			for(var i = 0, j = siblings.length; i < j; i++){
				if(isTag(siblings[i])){
					if(siblings[i] === elem) continue;
					if(getName(siblings[i]) === getName(elem)) return false;
				}
			}

			return next(elem);
		};
	},
	"only-child": function(next){
		return function onlyChild(elem){
			var siblings = getSiblings(elem);

			for(var i = 0; i < siblings.length; i++){
				if(isTag(siblings[i]) && siblings[i] !== elem) return false;
			}

			return next(elem);
		};
	},
	"nth-child": function(next, rule){
		var func = getNCheck(rule);

		if(func === falseFunc) return func;
		if(func === trueFunc)  return getChildFunc(next);

		return function nthChild(elem){
			var siblings = getSiblings(elem);

			for(var i = 0, pos = 0; i < siblings.length; i++){
				if(isTag(siblings[i])){
					if(siblings[i] === elem) break;
					else pos++;
				}
			}

			return func(pos) && next(elem);
		};
	},
	"nth-last-child": function(next, rule){
		var func = getNCheck(rule);

		if(func === falseFunc) return func;
		if(func === trueFunc)  return getChildFunc(next);

		return function nthLastChild(elem){
			var siblings = getSiblings(elem);

			for(var pos = 0, i = siblings.length - 1; i >= 0; i--){
				if(isTag(siblings[i])){
					if(siblings[i] === elem) break;
					else pos++;
				}
			}

			return func(pos) && next(elem);
		};
	},
	"nth-of-type": function(next, rule){
		var func = getNCheck(rule);

		if(func === falseFunc) return func;
		if(func === trueFunc)  return getChildFunc(next);

		return function nthOfType(elem){
			var siblings = getSiblings(elem);

			for(var pos = 0, i = 0; i < siblings.length; i++){
				if(isTag(siblings[i])){
					if(siblings[i] === elem) break;
					if(getName(siblings[i]) === getName(elem)) pos++;
				}
			}

			return func(pos) && next(elem);
		};
	},
	"nth-last-of-type": function(next, rule){
		var func = getNCheck(rule);

		if(func === falseFunc) return func;
		if(func === trueFunc)  return getChildFunc(next);

		return function nthLastOfType(elem){
			var siblings = getSiblings(elem);

			for(var pos = 0, i = siblings.length - 1; i >= 0; i--){
				if(siblings[i] === elem) break;
				if(getName(siblings[i]) === getName(elem)) pos++;
			}

			return func(pos) && next(elem);
		};
	},

	//jQuery extensions (others follow as pseudos)
	checkbox: getAttribFunc("type", "checkbox"),
	file: getAttribFunc("type", "file"),
	password: getAttribFunc("type", "password"),
	radio: getAttribFunc("type", "radio"),
	reset: getAttribFunc("type", "reset"),
	image: getAttribFunc("type", "image"),
	submit: getAttribFunc("type", "submit")
};

//while filters are precompiled, pseudos get called when they are needed
var pseudos = {
	root: function(elem){
		return !getParent(elem);
	},
	empty: function(elem){
		return !getChildren(elem).some(function(elem){
			return isTag(elem) || elem.type === "text";
		});
	},

	//forms
	//to consider: :target, :enabled
	selected: function(elem){
		if(hasAttrib(elem, "selected")) return true;
		else if(getName(elem) !== "option") return false;

		//the first <option> in a <select> is also selected
		var parent = getParent(elem);

		if(!parent || getName(parent) !== "select") return false;

		var siblings = getChildren(parent),
			sawElem  = false;

		for(var i = 0; i < siblings.length; i++){
			if(isTag(siblings[i])){
				if(siblings[i] === elem){
					sawElem = true;
				} else if(!sawElem){
					return false;
				} else if(hasAttrib(siblings[i], "selected")){
					return false;
				}
			}
		}

		return sawElem;
	},
	disabled: function(elem){
		return hasAttrib(elem, "disabled");
	},
	enabled: function(elem){
		return !hasAttrib(elem, "disabled");
	},
	checked: function(elem){
		return hasAttrib(elem, "checked") || pseudos.selected(elem);
	},

	//jQuery extensions

	//:parent is the inverse of :empty
	parent: function(elem){
		return !pseudos.empty(elem);
	},
	header: function(elem){
		var name = getName(elem);
		return name === "h1" ||
		       name === "h2" ||
		       name === "h3" ||
		       name === "h4" ||
		       name === "h5" ||
		       name === "h6";
	},

	button: function(elem){
		var name = getName(elem);
		return name === "button" ||
		       name === "input" &&
		       getAttribute(elem, "type") === "button";
	},
	input: function(elem){
		var name = getName(elem);
		return name === "input" ||
		       name === "textarea" ||
		       name === "select" ||
		       name === "button";
	},
	text: function(elem){
		var attr;
		return getName(elem) === "input" && (
			!(attr = getAttribute(elem, "type")) ||
			attr.toLowerCase() === "text"
		);
	}
};

function verifyArgs(func, name, subselect){
	if(subselect === null){
		if(func.length > 1){
			throw new SyntaxError("pseudo-selector :" + name + " requires an argument");
		}
	} else {
		if(func.length === 1){
			throw new SyntaxError("pseudo-selector :" + name + " doesn't have any arguments");
		}	
	}
}

module.exports = {
	compile: function(next, data){
		var name = data.name,
			subselect = data.data;

		if(typeof filters[name] === "function"){
			verifyArgs(filters[name], name,  subselect);
			return filters[name](next, subselect);
		} else if(typeof pseudos[name] === "function"){
			var func = pseudos[name];
			verifyArgs(func, name, subselect);
			return function pseudoArgs(elem){
				return func(elem, subselect) && next(elem);
			};
		} else {
			throw new SyntaxError("unmatched pseudo-class :" + name);
		}
	},
	filters: filters,
	pseudos: pseudos
};

},{"./attributes.js":11,"./basefunctions.js":12,"./nth-check.js":15,"domutils":19}],17:[function(require,module,exports){
module.exports = sortByProcedure;

/*
	sort the parts of the passed selector,
	as there is potential for optimization
	(some types of selectors are faster than others)
*/

var ATTRIBUTE = 1;

var procedure = {
	__proto__: null,
	universal: 5, //should be last so that it can be ignored
	tag: 3, //very quick test
	attribute: ATTRIBUTE,
	pseudo: 0, //can be pretty expensive (especially :has)

	//everything else shouldn't be moved
	descendant: -1,
	child: -1,
	parent: -1,
	sibling: -1,
	adjacent: -1
};

var attributes = {
	__proto__: null,
	exists: 8,
	equals: 7,
	not: 6,
	start: 5,
	end: 4,
	any: 3,
	hyphen: 2,
	element: 1
};

function sortByProcedure(arr){
	for(var i = 1; i < arr.length; i++){
		var procNew = procedure[arr[i].type];

		if(procNew < 0) continue;

		for(var j = i - 1; j >= 0; j--){
			if(
				procNew > procedure[arr[j].type] || !(
					procNew === ATTRIBUTE &&
					procedure[arr[j].type] === ATTRIBUTE &&
					attributes[arr[i].action] <= attributes[arr[j].action]
				)
			) break;

			var tmp = arr[j + 1];
			arr[j + 1] = arr[j];
			arr[j] = tmp;
		}
	}
	return arr;
}
},{}],18:[function(require,module,exports){
"use strict";

module.exports = parse;

var re_ws = /^\s/,
    re_name = /^(?:\\.|[\w\-\u00c0-\uFFFF])+/,
    re_escape = /\\([\da-f]{1,6}\s?|(\s)|.)/ig,
    //modified version of https://github.com/jquery/sizzle/blob/master/src/sizzle.js#L87
    re_attr = /^\s*((?:\\.|[\w\u00c0-\uFFFF\-])+)\s*(?:(\S?)=\s*(?:(['"])(.*?)\3|(#?(?:\\.|[\w\u00c0-\uFFFF\-])*)|)|)\s*(i)?\]/;

var actionTypes = {
	__proto__: null,
	"undefined": "exists",
	"":  "equals",
	"~": "element",
	"^": "start",
	"$": "end",
	"*": "any",
	"!": "not",
	"|": "hyphen"
};

var simpleSelectors = {
	__proto__: null,
	">": "child",
	"<": "parent",
	"~": "sibling",
	"+": "adjacent"
};

var attribSelectors = {
	__proto__: null,
	"#": ["id", "equals"],
	".": ["class", "element"]
};

//unescape function taken from https://github.com/jquery/sizzle/blob/master/src/sizzle.js#L139
function funescape( _, escaped, escapedWhitespace ) {
	var high = "0x" + escaped - 0x10000;
	// NaN means non-codepoint
	// Support: Firefox
	// Workaround erroneous numeric interpretation of +"0x"
	return high !== high || escapedWhitespace ?
		escaped :
		// BMP codepoint
		high < 0 ?
			String.fromCharCode( high + 0x10000 ) :
			// Supplemental Plane codepoint (surrogate pair)
			String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 );
}

function unescapeCSS(str){
	return str.replace(re_escape, funescape);
}

function getClosingPos(selector){
	var pos = 1, counter = 1, len = selector.length;

	for(; counter > 0 && pos < len; pos++){
		if(selector.charAt(pos) === "(") counter++;
		else if(selector.charAt(pos) === ")") counter--;
	}

	return pos;
}

function parse(selector, options){
	selector = (selector + "").trimLeft();

	var subselects = [],
	    tokens = [],
	    sawWS = false,
	    data, firstChar, name;
	
	function getName(){
		var sub = selector.match(re_name)[0];
		selector = selector.substr(sub.length);
		return unescapeCSS(sub);
	}

	while(selector !== ""){
		if(re_name.test(selector)){
			if(sawWS){
				tokens.push({type: "descendant"});
				sawWS = false;
			}

			name = getName();

			if(!options || ("lowerCaseTags" in options ? options.lowerCaseTags : !options.xmlMode)){
				name = name.toLowerCase();
			}

			tokens.push({type: "tag", name: name});
		} else if(re_ws.test(selector)){
			sawWS = true;
			selector = selector.trimLeft();
		} else {
			firstChar = selector.charAt(0);
			selector = selector.substr(1);

			if(firstChar in simpleSelectors){
				tokens.push({type: simpleSelectors[firstChar]});
				selector = selector.trimLeft();
				sawWS = false;
				continue;
			} else if(firstChar === ","){
				if(tokens.length === 0){
					throw new SyntaxError("empty sub-selector");
				}
				subselects.push(tokens);
				tokens = [];

				selector = selector.trimLeft();
				sawWS = false;
				continue;
			} else if(sawWS){
				tokens.push({type: "descendant"});
				sawWS = false;
			}

			if(firstChar === "*"){
				tokens.push({type: "universal"});
			} else if(firstChar in attribSelectors){
				tokens.push({
					type: "attribute",
					name: attribSelectors[firstChar][0],
					action: attribSelectors[firstChar][1],
					value: getName(),
					ignoreCase: false
				});
			} else if(firstChar === "["){
				data = selector.match(re_attr);
				if(!data){
					throw new SyntaxError("Malformed attribute selector: " + selector);
				}
				selector = selector.substr(data[0].length);
				name = unescapeCSS(data[1]);

				if(
					!options || (
						"lowerCaseAttributeNames" in options ?
							options.lowerCaseAttributeNames :
							!options.xmlMode
					)
				){
					name = name.toLowerCase();
				}

				tokens.push({
					type: "attribute",
					name: name,
					action: actionTypes[data[2]],
					value: unescapeCSS(data[4] || data[5] || ""),
					ignoreCase: !!data[6]
				});
				
			} else if(firstChar === ":"){
				//if(selector.charAt(0) === ":"){} //TODO pseudo-element
				name = getName().toLowerCase();
				data = null;
				
				if(selector.charAt(0) === "("){
					var pos = getClosingPos(selector);
					data = selector.substr(1, pos - 2);
					selector = selector.substr(pos);
				}
				
				tokens.push({type: "pseudo", name: name, data: data});
			} else {
				//otherwise, the parser needs to throw or it would enter an infinite loop
				throw new SyntaxError("Unmatched selector: " + firstChar + selector);
			}
		}
	}
	
	if(subselects.length > 0 && tokens.length === 0){
		throw new SyntaxError("empty sub-selector");
	}
	subselects.push(tokens);
	return subselects;
}
},{}],19:[function(require,module,exports){
var DomUtils = module.exports;

[
	require("./lib/stringify"),
	require("./lib/traversal"),
	require("./lib/manipulation"),
	require("./lib/querying"),
	require("./lib/legacy"),
	require("./lib/helpers")
].forEach(function(ext){
	Object.keys(ext).forEach(function(key){
		DomUtils[key] = ext[key].bind(DomUtils);
	});
});

},{"./lib/helpers":20,"./lib/legacy":21,"./lib/manipulation":22,"./lib/querying":23,"./lib/stringify":24,"./lib/traversal":25}],20:[function(require,module,exports){
// removeSubsets
// Given an array of nodes, remove any member that is contained by another.
exports.removeSubsets = function(nodes) {
	var idx = nodes.length, node, ancestor, replace;

	// Check if each node (or one of its ancestors) is already contained in the
	// array.
	while (--idx > -1) {
		node = ancestor = nodes[idx];

		// Temporarily remove the node under consideration
		nodes[idx] = null;
		replace = true;

		while (ancestor) {
			if (nodes.indexOf(ancestor) > -1) {
				replace = false;
				nodes.splice(idx, 1);
				break;
			}
			ancestor = ancestor.parent;
		}

		// If the node has been found to be unique, re-insert it.
		if (replace) {
			nodes[idx] = node;
		}
	}

	return nodes;
};

},{}],21:[function(require,module,exports){
var ElementType = require("domelementtype");
var isTag = exports.isTag = ElementType.isTag;

exports.testElement = function(options, element){
	for(var key in options){
		if(!options.hasOwnProperty(key));
		else if(key === "tag_name"){
			if(!isTag(element) || !options.tag_name(element.name)){
				return false;
			}
		} else if(key === "tag_type"){
			if(!options.tag_type(element.type)) return false;
		} else if(key === "tag_contains"){
			if(isTag(element) || !options.tag_contains(element.data)){
				return false;
			}
		} else if(!element.attribs || !options[key](element.attribs[key])){
			return false;
		}
	}
	return true;
};

var Checks = {
	tag_name: function(name){
		if(typeof name === "function"){
			return function(elem){ return isTag(elem) && name(elem.name); };
		} else if(name === "*"){
			return isTag;
		} else {
			return function(elem){ return isTag(elem) && elem.name === name; };
		}
	},
	tag_type: function(type){
		if(typeof type === "function"){
			return function(elem){ return type(elem.type); };
		} else {
			return function(elem){ return elem.type === type; };
		}
	},
	tag_contains: function(data){
		if(typeof data === "function"){
			return function(elem){ return !isTag(elem) && data(elem.data); };
		} else {
			return function(elem){ return !isTag(elem) && elem.data === data; };
		}
	}
};

function getAttribCheck(attrib, value){
	if(typeof value === "function"){
		return function(elem){ return elem.attribs && value(elem.attribs[attrib]); };
	} else {
		return function(elem){ return elem.attribs && elem.attribs[attrib] === value; };
	}
}

function combineFuncs(a, b){
	return function(elem){
		return a(elem) || b(elem);
	};
}

exports.getElements = function(options, element, recurse, limit){
	var funcs = Object.keys(options).map(function(key){
		var value = options[key];
		return key in Checks ? Checks[key](value) : getAttribCheck(key, value);
	});

	return funcs.length === 0 ? [] : this.filter(
		funcs.reduce(combineFuncs),
		element, recurse, limit
	);
};

exports.getElementById = function(id, element, recurse){
	if(!Array.isArray(element)) element = [element];
	return this.findOne(getAttribCheck("id", id), element, recurse !== false);
};

exports.getElementsByTagName = function(name, element, recurse, limit){
	return this.filter(Checks.tag_name(name), element, recurse, limit);
};

exports.getElementsByTagType = function(type, element, recurse, limit){
	return this.filter(Checks.tag_type(type), element, recurse, limit);
};

},{"domelementtype":26}],22:[function(require,module,exports){
exports.removeElement = function(elem){
	if(elem.prev) elem.prev.next = elem.next;
	if(elem.next) elem.next.prev = elem.prev;

	if(elem.parent){
		var childs = elem.parent.children;
		childs.splice(childs.lastIndexOf(elem), 1);
	}
};

exports.replaceElement = function(elem, replacement){
	var prev = replacement.prev = elem.prev;
	if(prev){
		prev.next = replacement;
	}

	var next = replacement.next = elem.next;
	if(next){
		next.prev = replacement;
	}

	var parent = replacement.parent = elem.parent;
	if(parent){
		var childs = parent.children;
		childs[childs.lastIndexOf(elem)] = replacement;
	}
};

exports.appendChild = function(elem, child){
	child.parent = elem;

	if(elem.children.push(child) !== 1){
		var sibling = elem.children[elem.children.length - 2];
		sibling.next = child;
		child.prev = sibling;
		child.next = null;
	}
};

exports.append = function(elem, next){
	var parent = elem.parent,
		currNext = elem.next;

	next.next = currNext;
	next.prev = elem;
	elem.next = next;
	next.parent = parent;

	if(currNext){
		currNext.prev = next;
		if(parent){
			var childs = parent.children;
			childs.splice(childs.lastIndexOf(currNext), 0, next);
		}
	} else if(parent){
		parent.children.push(next);
	}
};

exports.prepend = function(elem, prev){
	var parent = elem.parent;
	if(parent){
		var childs = parent.children;
		childs.splice(childs.lastIndexOf(elem), 0, prev);
	}

	if(elem.prev){
		elem.prev.next = prev;
	}
	
	prev.parent = parent;
	prev.prev = elem.prev;
	prev.next = elem;
	elem.prev = prev;
};



},{}],23:[function(require,module,exports){
var isTag = require("domelementtype").isTag;

module.exports = {
	filter: filter,
	find: find,
	findOneChild: findOneChild,
	findOne: findOne,
	existsOne: existsOne,
	findAll: findAll
};

function filter(test, element, recurse, limit){
	if(!Array.isArray(element)) element = [element];

	if(typeof limit !== "number" || !isFinite(limit)){
		limit = Infinity;
	}
	return find(test, element, recurse !== false, limit);
}

function find(test, elems, recurse, limit){
	var result = [], childs;

	for(var i = 0, j = elems.length; i < j; i++){
		if(test(elems[i])){
			result.push(elems[i]);
			if(--limit <= 0) break;
		}

		childs = elems[i].children;
		if(recurse && childs && childs.length > 0){
			childs = find(test, childs, recurse, limit);
			result = result.concat(childs);
			limit -= childs.length;
			if(limit <= 0) break;
		}
	}

	return result;
}

function findOneChild(test, elems){
	for(var i = 0, l = elems.length; i < l; i++){
		if(test(elems[i])) return elems[i];
	}

	return null;
}

function findOne(test, elems){
	var elem = null;

	for(var i = 0, l = elems.length; i < l && !elem; i++){
		if(!isTag(elems[i])){
			continue;
		} else if(test(elems[i])){
			elem = elems[i];
		} else if(elems[i].children.length > 0){
			elem = findOne(test, elems[i].children);
		}
	}

	return elem;
}

function existsOne(test, elems){
	for(var i = 0, l = elems.length; i < l; i++){
		if(
			isTag(elems[i]) && (
				test(elems[i]) || (
					elems[i].children.length > 0 &&
					existsOne(test, elems[i].children)
				)
			)
		){
			return true;
		}
	}

	return false;
}

function findAll(test, elems){
	var result = [];
	for(var i = 0, j = elems.length; i < j; i++){
		if(!isTag(elems[i])) continue;
		if(test(elems[i])) result.push(elems[i]);

		if(elems[i].children.length > 0){
			result = result.concat(findAll(test, elems[i].children));
		}
	}
	return result;
}

},{"domelementtype":26}],24:[function(require,module,exports){
var ElementType = require("domelementtype"),
    isTag = ElementType.isTag;

module.exports = {
	getInnerHTML: getInnerHTML,
	getOuterHTML: getOuterHTML,
	getText: getText
};

function getInnerHTML(elem){
	return elem.children ? elem.children.map(getOuterHTML).join("") : "";
}

//boolean attributes without a value (taken from MatthewMueller/cheerio)
var booleanAttribs = {
	__proto__: null,
	async: true,
	autofocus: true,
	autoplay: true,
	checked: true,
	controls: true,
	defer: true,
	disabled: true,
	hidden: true,
	loop: true,
	multiple: true,
	open: true,
	readonly: true,
	required: true,
	scoped: true,
	selected: true
};

var emptyTags = {
	__proto__: null,
	area: true,
	base: true,
	basefont: true,
	br: true,
	col: true,
	frame: true,
	hr: true,
	img: true,
	input: true,
	isindex: true,
	link: true,
	meta: true,
	param: true,
	embed: true
};

function getOuterHTML(elem){
	switch(elem.type){
	case ElementType.Text:
		return elem.data;
	case ElementType.Comment:
		return "<!--" + elem.data + "-->";
	case ElementType.Directive:
		return "<" + elem.data + ">";
	case ElementType.CDATA:
		return "<!CDATA " + getInnerHTML(elem) + "]]>";
	}

	var ret = "<" + elem.name;
	if("attribs" in elem){
		for(var attr in elem.attribs){
			if(elem.attribs.hasOwnProperty(attr)){
				ret += " " + attr;
				var value = elem.attribs[attr];
				if(value == null){
					if( !(attr in booleanAttribs) ){
						ret += "=\"\"";
					}
				} else {
					ret += "=\"" + value + "\"";
				}
			}
		}
	}

	if (elem.name in emptyTags && elem.children.length === 0) {
		return ret + " />";
	} else {
		return ret + ">" + getInnerHTML(elem) + "</" + elem.name + ">";
	}
}

function getText(elem){
	if(Array.isArray(elem)) return elem.map(getText).join("");
	if(isTag(elem) || elem.type === ElementType.CDATA) return getText(elem.children);
	if(elem.type === ElementType.Text) return elem.data;
	return "";
}
},{"domelementtype":26}],25:[function(require,module,exports){
var getChildren = exports.getChildren = function(elem){
	return elem.children;
};

var getParent = exports.getParent = function(elem){
	return elem.parent;
};

exports.getSiblings = function(elem){
	var parent = getParent(elem);
	return parent ? getChildren(parent) : [elem];
};

exports.getAttributeValue = function(elem, name){
	return elem.attribs && elem.attribs[name];
};

exports.hasAttrib = function(elem, name){
	return hasOwnProperty.call(elem.attribs, name);
};

exports.getName = function(elem){
	return elem.name;
};

},{}],26:[function(require,module,exports){
//Types of elements found in the DOM
module.exports = {
	Text: "text", //Text
	Directive: "directive", //<? ... ?>
	Comment: "comment", //<!-- ... -->
	Script: "script", //<script> tags
	Style: "style", //<style> tags
	Tag: "tag", //Any tag
	CDATA: "cdata", //<![CDATA[ ... ]]>

	isTag: function(elem){
		return elem.type === "tag" || elem.type === "script" || elem.type === "style";
	}
};
},{}],27:[function(require,module,exports){
/*
  Module dependencies
*/
var ElementType = require('domelementtype');
var entities = require('entities');

/*
  Boolean Attributes
*/
var booleanAttributes = {
  __proto__: null,
  allowfullscreen: true,
  async: true,
  autofocus: true,
  autoplay: true,
  checked: true,
  controls: true,
  default: true,
  defer: true,
  disabled: true,
  hidden: true,
  ismap: true,
  loop: true,
  multiple: true,
  muted: true,
  open: true,
  readonly: true,
  required: true,
  reversed: true,
  scoped: true,
  seamless: true,
  selected: true,
  typemustmatch: true
};

var unencodedElements = {
  __proto__: null,
  style: true,
  script: true,
  xmp: true,
  iframe: true,
  noembed: true,
  noframes: true,
  plaintext: true,
  noscript: true
};

/*
  Format attributes
*/
function formatAttrs(attributes, opts) {
  if (!attributes) return;

  var output = '',
      value;

  // Loop through the attributes
  for (var key in attributes) {
    value = attributes[key];
    if (output) {
      output += ' ';
    }

    if (!value && booleanAttributes[key]) {
      output += key;
    } else {
      output += key + '="' + (opts.decodeEntities ? entities.encodeXML(value) : value) + '"';
    }
  }

  return output;
}

/*
  Self-enclosing tags (stolen from node-htmlparser)
*/
var singleTag = {
  __proto__: null,
  area: true,
  base: true,
  basefont: true,
  br: true,
  col: true,
  command: true,
  embed: true,
  frame: true,
  hr: true,
  img: true,
  input: true,
  isindex: true,
  keygen: true,
  link: true,
  meta: true,
  param: true,
  source: true,
  track: true,
  wbr: true,

  //common self closing svg elements
  path: true,
  circle: true,
  ellipse: true,
  line: true,
  rect: true,
  use: true
};

var render = module.exports = function(dom, opts) {
  if (!Array.isArray(dom) && !dom.cheerio) dom = [dom];
  opts = opts || {};

  var output = '';

  for(var i = 0; i < dom.length; i++){
    var elem = dom[i];

    if (elem.type === 'root')
      output += render(elem.children, opts);
    else if (ElementType.isTag(elem))
      output += renderTag(elem, opts);
    else if (elem.type === ElementType.Directive)
      output += renderDirective(elem);
    else if (elem.type === ElementType.Comment)
      output += renderComment(elem);
    else if (elem.type === ElementType.CDATA)
      output += renderCdata(elem);
    else
      output += renderText(elem, opts);
  }

  return output;
};

function renderTag(elem, opts) {
  var tag = '<' + elem.name,
      attribs = formatAttrs(elem.attribs, opts);

  if (attribs) {
    tag += ' ' + attribs;
  }

  if (
    opts.xmlMode &&
    (!elem.children || elem.children.length === 0)
  ) {
    tag += '/>';
  } else {
    tag += '>';
    tag += render(elem.children, opts);

    if (!singleTag[elem.name] || opts.xmlMode) {
      tag += '</' + elem.name + '>';
    }
  }



  return tag;
}

function renderDirective(elem) {
  return '<' + elem.data + '>';
}

function renderText(elem, opts) {
  var data = elem.data || '';

  // if entities weren't decoded, no need to encode them back
  if (opts.decodeEntities && !(elem.parent && elem.parent.name in unencodedElements)) {
    data = entities.encodeXML(data);
  }

  return data;
}

function renderCdata(elem) {
  return '<![CDATA[' + elem.children[0].data + ']]>';
}

function renderComment(elem) {
  return '<!--' + elem.data + '-->';
}

},{"domelementtype":28,"entities":29}],28:[function(require,module,exports){
arguments[4][26][0].apply(exports,arguments)
},{"dup":26}],29:[function(require,module,exports){
var encode = require("./lib/encode.js"),
    decode = require("./lib/decode.js");

exports.decode = function(data, level){
	return (!level || level <= 0 ? decode.XML : decode.HTML)(data);
};

exports.decodeStrict = function(data, level){
	return (!level || level <= 0 ? decode.XML : decode.HTMLStrict)(data);
};

exports.encode = function(data, level){
	return (!level || level <= 0 ? encode.XML : encode.HTML)(data);
};

exports.encodeXML = encode.XML;

exports.encodeHTML4 =
exports.encodeHTML5 =
exports.encodeHTML  = encode.HTML;

exports.decodeXML =
exports.decodeXMLStrict = decode.XML;

exports.decodeHTML4 =
exports.decodeHTML5 =
exports.decodeHTML = decode.HTML;

exports.decodeHTML4Strict =
exports.decodeHTML5Strict =
exports.decodeHTMLStrict = decode.HTMLStrict;

exports.escape = encode.escape;

},{"./lib/decode.js":30,"./lib/encode.js":32}],30:[function(require,module,exports){
var entityMap = require("../maps/entities.json"),
    legacyMap = require("../maps/legacy.json"),
    xmlMap    = require("../maps/xml.json"),
    decodeCodePoint = require("./decode_codepoint.js");

var decodeXMLStrict  = getStrictDecoder(xmlMap),
    decodeHTMLStrict = getStrictDecoder(entityMap);

function getStrictDecoder(map){
	var keys = Object.keys(map).join("|"),
	    replace = getReplacer(map);

	keys += "|#[xX][\\da-fA-F]+|#\\d+";

	var re = new RegExp("&(?:" + keys + ");", "g");

	return function(str){
		return String(str).replace(re, replace);
	};
}

var decodeHTML = (function(){
	var legacy = Object.keys(legacyMap)
		.sort(sorter);

	var keys = Object.keys(entityMap)
		.sort(sorter);

	for(var i = 0, j = 0; i < keys.length; i++){
		if(legacy[j] === keys[i]){
			keys[i] += ";?";
			j++;
		} else {
			keys[i] += ";";
		}
	}

	var re = new RegExp("&(?:" + keys.join("|") + "|#[xX][\\da-fA-F]+;?|#\\d+;?)", "g"),
	    replace = getReplacer(entityMap);

	function replacer(str){
		if(str.substr(-1) !== ";") str += ";";
		return replace(str);
	}

	//TODO consider creating a merged map
	return function(str){
		return String(str).replace(re, replacer);
	};
}());

function sorter(a, b){
	return a < b ? 1 : -1;
}

function getReplacer(map){
	return function replace(str){
		if(str.charAt(1) === "#"){
			if(str.charAt(2) === "X" || str.charAt(2) === "x"){
				return decodeCodePoint(parseInt(str.substr(3), 16));
			}
			return decodeCodePoint(parseInt(str.substr(2), 10));
		}
		return map[str.slice(1, -1)];
	};
}

module.exports = {
	XML: decodeXMLStrict,
	HTML: decodeHTML,
	HTMLStrict: decodeHTMLStrict
};
},{"../maps/entities.json":34,"../maps/legacy.json":35,"../maps/xml.json":36,"./decode_codepoint.js":31}],31:[function(require,module,exports){
var decodeMap = require("../maps/decode.json");

module.exports = decodeCodePoint;

// modified version of https://github.com/mathiasbynens/he/blob/master/src/he.js#L94-L119
function decodeCodePoint(codePoint){

	if((codePoint >= 0xD800 && codePoint <= 0xDFFF) || codePoint > 0x10FFFF){
		return "\uFFFD";
	}

	if(codePoint in decodeMap){
		codePoint = decodeMap[codePoint];
	}

	var output = "";

	if(codePoint > 0xFFFF){
		codePoint -= 0x10000;
		output += String.fromCharCode(codePoint >>> 10 & 0x3FF | 0xD800);
		codePoint = 0xDC00 | codePoint & 0x3FF;
	}

	output += String.fromCharCode(codePoint);
	return output;
}

},{"../maps/decode.json":33}],32:[function(require,module,exports){
var inverseXML = getInverseObj(require("../maps/xml.json")),
    xmlReplacer = getInverseReplacer(inverseXML);

exports.XML = getInverse(inverseXML, xmlReplacer);

var inverseHTML = getInverseObj(require("../maps/entities.json")),
    htmlReplacer = getInverseReplacer(inverseHTML);

exports.HTML = getInverse(inverseHTML, htmlReplacer);

function getInverseObj(obj){
	return Object.keys(obj).sort().reduce(function(inverse, name){
		inverse[obj[name]] = "&" + name + ";";
		return inverse;
	}, {});
}

function getInverseReplacer(inverse){
	var single = [],
	    multiple = [];

	Object.keys(inverse).forEach(function(k){
		if(k.length === 1){
			single.push("\\" + k);
		} else {
			multiple.push(k);
		}
	});

	//TODO add ranges
	multiple.unshift("[" + single.join("") + "]");

	return new RegExp(multiple.join("|"), "g");
}

var re_nonASCII = /[^\0-\x7F]/g,
    re_astralSymbols = /[\uD800-\uDBFF][\uDC00-\uDFFF]/g;

function singleCharReplacer(c){
	return "&#x" + c.charCodeAt(0).toString(16).toUpperCase() + ";";
}

function astralReplacer(c){
	// http://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
	var high = c.charCodeAt(0);
	var low  = c.charCodeAt(1);
	var codePoint = (high - 0xD800) * 0x400 + low - 0xDC00 + 0x10000;
	return "&#x" + codePoint.toString(16).toUpperCase() + ";";
}

function getInverse(inverse, re){
	function func(name){
		return inverse[name];
	}

	return function(data){
		return data
				.replace(re, func)
				.replace(re_astralSymbols, astralReplacer)
				.replace(re_nonASCII, singleCharReplacer);
	};
}

var re_xmlChars = getInverseReplacer(inverseXML);

function escapeXML(data){
	return data
			.replace(re_xmlChars, singleCharReplacer)
			.replace(re_astralSymbols, astralReplacer)
			.replace(re_nonASCII, singleCharReplacer);
}

exports.escape = escapeXML;

},{"../maps/entities.json":34,"../maps/xml.json":36}],33:[function(require,module,exports){
module.exports={"0":65533,"128":8364,"130":8218,"131":402,"132":8222,"133":8230,"134":8224,"135":8225,"136":710,"137":8240,"138":352,"139":8249,"140":338,"142":381,"145":8216,"146":8217,"147":8220,"148":8221,"149":8226,"150":8211,"151":8212,"152":732,"153":8482,"154":353,"155":8250,"156":339,"158":382,"159":376}
},{}],34:[function(require,module,exports){
module.exports={"Aacute":"\u00C1","aacute":"\u00E1","Abreve":"\u0102","abreve":"\u0103","ac":"\u223E","acd":"\u223F","acE":"\u223E\u0333","Acirc":"\u00C2","acirc":"\u00E2","acute":"\u00B4","Acy":"\u0410","acy":"\u0430","AElig":"\u00C6","aelig":"\u00E6","af":"\u2061","Afr":"\uD835\uDD04","afr":"\uD835\uDD1E","Agrave":"\u00C0","agrave":"\u00E0","alefsym":"\u2135","aleph":"\u2135","Alpha":"\u0391","alpha":"\u03B1","Amacr":"\u0100","amacr":"\u0101","amalg":"\u2A3F","amp":"&","AMP":"&","andand":"\u2A55","And":"\u2A53","and":"\u2227","andd":"\u2A5C","andslope":"\u2A58","andv":"\u2A5A","ang":"\u2220","ange":"\u29A4","angle":"\u2220","angmsdaa":"\u29A8","angmsdab":"\u29A9","angmsdac":"\u29AA","angmsdad":"\u29AB","angmsdae":"\u29AC","angmsdaf":"\u29AD","angmsdag":"\u29AE","angmsdah":"\u29AF","angmsd":"\u2221","angrt":"\u221F","angrtvb":"\u22BE","angrtvbd":"\u299D","angsph":"\u2222","angst":"\u00C5","angzarr":"\u237C","Aogon":"\u0104","aogon":"\u0105","Aopf":"\uD835\uDD38","aopf":"\uD835\uDD52","apacir":"\u2A6F","ap":"\u2248","apE":"\u2A70","ape":"\u224A","apid":"\u224B","apos":"'","ApplyFunction":"\u2061","approx":"\u2248","approxeq":"\u224A","Aring":"\u00C5","aring":"\u00E5","Ascr":"\uD835\uDC9C","ascr":"\uD835\uDCB6","Assign":"\u2254","ast":"*","asymp":"\u2248","asympeq":"\u224D","Atilde":"\u00C3","atilde":"\u00E3","Auml":"\u00C4","auml":"\u00E4","awconint":"\u2233","awint":"\u2A11","backcong":"\u224C","backepsilon":"\u03F6","backprime":"\u2035","backsim":"\u223D","backsimeq":"\u22CD","Backslash":"\u2216","Barv":"\u2AE7","barvee":"\u22BD","barwed":"\u2305","Barwed":"\u2306","barwedge":"\u2305","bbrk":"\u23B5","bbrktbrk":"\u23B6","bcong":"\u224C","Bcy":"\u0411","bcy":"\u0431","bdquo":"\u201E","becaus":"\u2235","because":"\u2235","Because":"\u2235","bemptyv":"\u29B0","bepsi":"\u03F6","bernou":"\u212C","Bernoullis":"\u212C","Beta":"\u0392","beta":"\u03B2","beth":"\u2136","between":"\u226C","Bfr":"\uD835\uDD05","bfr":"\uD835\uDD1F","bigcap":"\u22C2","bigcirc":"\u25EF","bigcup":"\u22C3","bigodot":"\u2A00","bigoplus":"\u2A01","bigotimes":"\u2A02","bigsqcup":"\u2A06","bigstar":"\u2605","bigtriangledown":"\u25BD","bigtriangleup":"\u25B3","biguplus":"\u2A04","bigvee":"\u22C1","bigwedge":"\u22C0","bkarow":"\u290D","blacklozenge":"\u29EB","blacksquare":"\u25AA","blacktriangle":"\u25B4","blacktriangledown":"\u25BE","blacktriangleleft":"\u25C2","blacktriangleright":"\u25B8","blank":"\u2423","blk12":"\u2592","blk14":"\u2591","blk34":"\u2593","block":"\u2588","bne":"=\u20E5","bnequiv":"\u2261\u20E5","bNot":"\u2AED","bnot":"\u2310","Bopf":"\uD835\uDD39","bopf":"\uD835\uDD53","bot":"\u22A5","bottom":"\u22A5","bowtie":"\u22C8","boxbox":"\u29C9","boxdl":"\u2510","boxdL":"\u2555","boxDl":"\u2556","boxDL":"\u2557","boxdr":"\u250C","boxdR":"\u2552","boxDr":"\u2553","boxDR":"\u2554","boxh":"\u2500","boxH":"\u2550","boxhd":"\u252C","boxHd":"\u2564","boxhD":"\u2565","boxHD":"\u2566","boxhu":"\u2534","boxHu":"\u2567","boxhU":"\u2568","boxHU":"\u2569","boxminus":"\u229F","boxplus":"\u229E","boxtimes":"\u22A0","boxul":"\u2518","boxuL":"\u255B","boxUl":"\u255C","boxUL":"\u255D","boxur":"\u2514","boxuR":"\u2558","boxUr":"\u2559","boxUR":"\u255A","boxv":"\u2502","boxV":"\u2551","boxvh":"\u253C","boxvH":"\u256A","boxVh":"\u256B","boxVH":"\u256C","boxvl":"\u2524","boxvL":"\u2561","boxVl":"\u2562","boxVL":"\u2563","boxvr":"\u251C","boxvR":"\u255E","boxVr":"\u255F","boxVR":"\u2560","bprime":"\u2035","breve":"\u02D8","Breve":"\u02D8","brvbar":"\u00A6","bscr":"\uD835\uDCB7","Bscr":"\u212C","bsemi":"\u204F","bsim":"\u223D","bsime":"\u22CD","bsolb":"\u29C5","bsol":"\\","bsolhsub":"\u27C8","bull":"\u2022","bullet":"\u2022","bump":"\u224E","bumpE":"\u2AAE","bumpe":"\u224F","Bumpeq":"\u224E","bumpeq":"\u224F","Cacute":"\u0106","cacute":"\u0107","capand":"\u2A44","capbrcup":"\u2A49","capcap":"\u2A4B","cap":"\u2229","Cap":"\u22D2","capcup":"\u2A47","capdot":"\u2A40","CapitalDifferentialD":"\u2145","caps":"\u2229\uFE00","caret":"\u2041","caron":"\u02C7","Cayleys":"\u212D","ccaps":"\u2A4D","Ccaron":"\u010C","ccaron":"\u010D","Ccedil":"\u00C7","ccedil":"\u00E7","Ccirc":"\u0108","ccirc":"\u0109","Cconint":"\u2230","ccups":"\u2A4C","ccupssm":"\u2A50","Cdot":"\u010A","cdot":"\u010B","cedil":"\u00B8","Cedilla":"\u00B8","cemptyv":"\u29B2","cent":"\u00A2","centerdot":"\u00B7","CenterDot":"\u00B7","cfr":"\uD835\uDD20","Cfr":"\u212D","CHcy":"\u0427","chcy":"\u0447","check":"\u2713","checkmark":"\u2713","Chi":"\u03A7","chi":"\u03C7","circ":"\u02C6","circeq":"\u2257","circlearrowleft":"\u21BA","circlearrowright":"\u21BB","circledast":"\u229B","circledcirc":"\u229A","circleddash":"\u229D","CircleDot":"\u2299","circledR":"\u00AE","circledS":"\u24C8","CircleMinus":"\u2296","CirclePlus":"\u2295","CircleTimes":"\u2297","cir":"\u25CB","cirE":"\u29C3","cire":"\u2257","cirfnint":"\u2A10","cirmid":"\u2AEF","cirscir":"\u29C2","ClockwiseContourIntegral":"\u2232","CloseCurlyDoubleQuote":"\u201D","CloseCurlyQuote":"\u2019","clubs":"\u2663","clubsuit":"\u2663","colon":":","Colon":"\u2237","Colone":"\u2A74","colone":"\u2254","coloneq":"\u2254","comma":",","commat":"@","comp":"\u2201","compfn":"\u2218","complement":"\u2201","complexes":"\u2102","cong":"\u2245","congdot":"\u2A6D","Congruent":"\u2261","conint":"\u222E","Conint":"\u222F","ContourIntegral":"\u222E","copf":"\uD835\uDD54","Copf":"\u2102","coprod":"\u2210","Coproduct":"\u2210","copy":"\u00A9","COPY":"\u00A9","copysr":"\u2117","CounterClockwiseContourIntegral":"\u2233","crarr":"\u21B5","cross":"\u2717","Cross":"\u2A2F","Cscr":"\uD835\uDC9E","cscr":"\uD835\uDCB8","csub":"\u2ACF","csube":"\u2AD1","csup":"\u2AD0","csupe":"\u2AD2","ctdot":"\u22EF","cudarrl":"\u2938","cudarrr":"\u2935","cuepr":"\u22DE","cuesc":"\u22DF","cularr":"\u21B6","cularrp":"\u293D","cupbrcap":"\u2A48","cupcap":"\u2A46","CupCap":"\u224D","cup":"\u222A","Cup":"\u22D3","cupcup":"\u2A4A","cupdot":"\u228D","cupor":"\u2A45","cups":"\u222A\uFE00","curarr":"\u21B7","curarrm":"\u293C","curlyeqprec":"\u22DE","curlyeqsucc":"\u22DF","curlyvee":"\u22CE","curlywedge":"\u22CF","curren":"\u00A4","curvearrowleft":"\u21B6","curvearrowright":"\u21B7","cuvee":"\u22CE","cuwed":"\u22CF","cwconint":"\u2232","cwint":"\u2231","cylcty":"\u232D","dagger":"\u2020","Dagger":"\u2021","daleth":"\u2138","darr":"\u2193","Darr":"\u21A1","dArr":"\u21D3","dash":"\u2010","Dashv":"\u2AE4","dashv":"\u22A3","dbkarow":"\u290F","dblac":"\u02DD","Dcaron":"\u010E","dcaron":"\u010F","Dcy":"\u0414","dcy":"\u0434","ddagger":"\u2021","ddarr":"\u21CA","DD":"\u2145","dd":"\u2146","DDotrahd":"\u2911","ddotseq":"\u2A77","deg":"\u00B0","Del":"\u2207","Delta":"\u0394","delta":"\u03B4","demptyv":"\u29B1","dfisht":"\u297F","Dfr":"\uD835\uDD07","dfr":"\uD835\uDD21","dHar":"\u2965","dharl":"\u21C3","dharr":"\u21C2","DiacriticalAcute":"\u00B4","DiacriticalDot":"\u02D9","DiacriticalDoubleAcute":"\u02DD","DiacriticalGrave":"`","DiacriticalTilde":"\u02DC","diam":"\u22C4","diamond":"\u22C4","Diamond":"\u22C4","diamondsuit":"\u2666","diams":"\u2666","die":"\u00A8","DifferentialD":"\u2146","digamma":"\u03DD","disin":"\u22F2","div":"\u00F7","divide":"\u00F7","divideontimes":"\u22C7","divonx":"\u22C7","DJcy":"\u0402","djcy":"\u0452","dlcorn":"\u231E","dlcrop":"\u230D","dollar":"$","Dopf":"\uD835\uDD3B","dopf":"\uD835\uDD55","Dot":"\u00A8","dot":"\u02D9","DotDot":"\u20DC","doteq":"\u2250","doteqdot":"\u2251","DotEqual":"\u2250","dotminus":"\u2238","dotplus":"\u2214","dotsquare":"\u22A1","doublebarwedge":"\u2306","DoubleContourIntegral":"\u222F","DoubleDot":"\u00A8","DoubleDownArrow":"\u21D3","DoubleLeftArrow":"\u21D0","DoubleLeftRightArrow":"\u21D4","DoubleLeftTee":"\u2AE4","DoubleLongLeftArrow":"\u27F8","DoubleLongLeftRightArrow":"\u27FA","DoubleLongRightArrow":"\u27F9","DoubleRightArrow":"\u21D2","DoubleRightTee":"\u22A8","DoubleUpArrow":"\u21D1","DoubleUpDownArrow":"\u21D5","DoubleVerticalBar":"\u2225","DownArrowBar":"\u2913","downarrow":"\u2193","DownArrow":"\u2193","Downarrow":"\u21D3","DownArrowUpArrow":"\u21F5","DownBreve":"\u0311","downdownarrows":"\u21CA","downharpoonleft":"\u21C3","downharpoonright":"\u21C2","DownLeftRightVector":"\u2950","DownLeftTeeVector":"\u295E","DownLeftVectorBar":"\u2956","DownLeftVector":"\u21BD","DownRightTeeVector":"\u295F","DownRightVectorBar":"\u2957","DownRightVector":"\u21C1","DownTeeArrow":"\u21A7","DownTee":"\u22A4","drbkarow":"\u2910","drcorn":"\u231F","drcrop":"\u230C","Dscr":"\uD835\uDC9F","dscr":"\uD835\uDCB9","DScy":"\u0405","dscy":"\u0455","dsol":"\u29F6","Dstrok":"\u0110","dstrok":"\u0111","dtdot":"\u22F1","dtri":"\u25BF","dtrif":"\u25BE","duarr":"\u21F5","duhar":"\u296F","dwangle":"\u29A6","DZcy":"\u040F","dzcy":"\u045F","dzigrarr":"\u27FF","Eacute":"\u00C9","eacute":"\u00E9","easter":"\u2A6E","Ecaron":"\u011A","ecaron":"\u011B","Ecirc":"\u00CA","ecirc":"\u00EA","ecir":"\u2256","ecolon":"\u2255","Ecy":"\u042D","ecy":"\u044D","eDDot":"\u2A77","Edot":"\u0116","edot":"\u0117","eDot":"\u2251","ee":"\u2147","efDot":"\u2252","Efr":"\uD835\uDD08","efr":"\uD835\uDD22","eg":"\u2A9A","Egrave":"\u00C8","egrave":"\u00E8","egs":"\u2A96","egsdot":"\u2A98","el":"\u2A99","Element":"\u2208","elinters":"\u23E7","ell":"\u2113","els":"\u2A95","elsdot":"\u2A97","Emacr":"\u0112","emacr":"\u0113","empty":"\u2205","emptyset":"\u2205","EmptySmallSquare":"\u25FB","emptyv":"\u2205","EmptyVerySmallSquare":"\u25AB","emsp13":"\u2004","emsp14":"\u2005","emsp":"\u2003","ENG":"\u014A","eng":"\u014B","ensp":"\u2002","Eogon":"\u0118","eogon":"\u0119","Eopf":"\uD835\uDD3C","eopf":"\uD835\uDD56","epar":"\u22D5","eparsl":"\u29E3","eplus":"\u2A71","epsi":"\u03B5","Epsilon":"\u0395","epsilon":"\u03B5","epsiv":"\u03F5","eqcirc":"\u2256","eqcolon":"\u2255","eqsim":"\u2242","eqslantgtr":"\u2A96","eqslantless":"\u2A95","Equal":"\u2A75","equals":"=","EqualTilde":"\u2242","equest":"\u225F","Equilibrium":"\u21CC","equiv":"\u2261","equivDD":"\u2A78","eqvparsl":"\u29E5","erarr":"\u2971","erDot":"\u2253","escr":"\u212F","Escr":"\u2130","esdot":"\u2250","Esim":"\u2A73","esim":"\u2242","Eta":"\u0397","eta":"\u03B7","ETH":"\u00D0","eth":"\u00F0","Euml":"\u00CB","euml":"\u00EB","euro":"\u20AC","excl":"!","exist":"\u2203","Exists":"\u2203","expectation":"\u2130","exponentiale":"\u2147","ExponentialE":"\u2147","fallingdotseq":"\u2252","Fcy":"\u0424","fcy":"\u0444","female":"\u2640","ffilig":"\uFB03","fflig":"\uFB00","ffllig":"\uFB04","Ffr":"\uD835\uDD09","ffr":"\uD835\uDD23","filig":"\uFB01","FilledSmallSquare":"\u25FC","FilledVerySmallSquare":"\u25AA","fjlig":"fj","flat":"\u266D","fllig":"\uFB02","fltns":"\u25B1","fnof":"\u0192","Fopf":"\uD835\uDD3D","fopf":"\uD835\uDD57","forall":"\u2200","ForAll":"\u2200","fork":"\u22D4","forkv":"\u2AD9","Fouriertrf":"\u2131","fpartint":"\u2A0D","frac12":"\u00BD","frac13":"\u2153","frac14":"\u00BC","frac15":"\u2155","frac16":"\u2159","frac18":"\u215B","frac23":"\u2154","frac25":"\u2156","frac34":"\u00BE","frac35":"\u2157","frac38":"\u215C","frac45":"\u2158","frac56":"\u215A","frac58":"\u215D","frac78":"\u215E","frasl":"\u2044","frown":"\u2322","fscr":"\uD835\uDCBB","Fscr":"\u2131","gacute":"\u01F5","Gamma":"\u0393","gamma":"\u03B3","Gammad":"\u03DC","gammad":"\u03DD","gap":"\u2A86","Gbreve":"\u011E","gbreve":"\u011F","Gcedil":"\u0122","Gcirc":"\u011C","gcirc":"\u011D","Gcy":"\u0413","gcy":"\u0433","Gdot":"\u0120","gdot":"\u0121","ge":"\u2265","gE":"\u2267","gEl":"\u2A8C","gel":"\u22DB","geq":"\u2265","geqq":"\u2267","geqslant":"\u2A7E","gescc":"\u2AA9","ges":"\u2A7E","gesdot":"\u2A80","gesdoto":"\u2A82","gesdotol":"\u2A84","gesl":"\u22DB\uFE00","gesles":"\u2A94","Gfr":"\uD835\uDD0A","gfr":"\uD835\uDD24","gg":"\u226B","Gg":"\u22D9","ggg":"\u22D9","gimel":"\u2137","GJcy":"\u0403","gjcy":"\u0453","gla":"\u2AA5","gl":"\u2277","glE":"\u2A92","glj":"\u2AA4","gnap":"\u2A8A","gnapprox":"\u2A8A","gne":"\u2A88","gnE":"\u2269","gneq":"\u2A88","gneqq":"\u2269","gnsim":"\u22E7","Gopf":"\uD835\uDD3E","gopf":"\uD835\uDD58","grave":"`","GreaterEqual":"\u2265","GreaterEqualLess":"\u22DB","GreaterFullEqual":"\u2267","GreaterGreater":"\u2AA2","GreaterLess":"\u2277","GreaterSlantEqual":"\u2A7E","GreaterTilde":"\u2273","Gscr":"\uD835\uDCA2","gscr":"\u210A","gsim":"\u2273","gsime":"\u2A8E","gsiml":"\u2A90","gtcc":"\u2AA7","gtcir":"\u2A7A","gt":">","GT":">","Gt":"\u226B","gtdot":"\u22D7","gtlPar":"\u2995","gtquest":"\u2A7C","gtrapprox":"\u2A86","gtrarr":"\u2978","gtrdot":"\u22D7","gtreqless":"\u22DB","gtreqqless":"\u2A8C","gtrless":"\u2277","gtrsim":"\u2273","gvertneqq":"\u2269\uFE00","gvnE":"\u2269\uFE00","Hacek":"\u02C7","hairsp":"\u200A","half":"\u00BD","hamilt":"\u210B","HARDcy":"\u042A","hardcy":"\u044A","harrcir":"\u2948","harr":"\u2194","hArr":"\u21D4","harrw":"\u21AD","Hat":"^","hbar":"\u210F","Hcirc":"\u0124","hcirc":"\u0125","hearts":"\u2665","heartsuit":"\u2665","hellip":"\u2026","hercon":"\u22B9","hfr":"\uD835\uDD25","Hfr":"\u210C","HilbertSpace":"\u210B","hksearow":"\u2925","hkswarow":"\u2926","hoarr":"\u21FF","homtht":"\u223B","hookleftarrow":"\u21A9","hookrightarrow":"\u21AA","hopf":"\uD835\uDD59","Hopf":"\u210D","horbar":"\u2015","HorizontalLine":"\u2500","hscr":"\uD835\uDCBD","Hscr":"\u210B","hslash":"\u210F","Hstrok":"\u0126","hstrok":"\u0127","HumpDownHump":"\u224E","HumpEqual":"\u224F","hybull":"\u2043","hyphen":"\u2010","Iacute":"\u00CD","iacute":"\u00ED","ic":"\u2063","Icirc":"\u00CE","icirc":"\u00EE","Icy":"\u0418","icy":"\u0438","Idot":"\u0130","IEcy":"\u0415","iecy":"\u0435","iexcl":"\u00A1","iff":"\u21D4","ifr":"\uD835\uDD26","Ifr":"\u2111","Igrave":"\u00CC","igrave":"\u00EC","ii":"\u2148","iiiint":"\u2A0C","iiint":"\u222D","iinfin":"\u29DC","iiota":"\u2129","IJlig":"\u0132","ijlig":"\u0133","Imacr":"\u012A","imacr":"\u012B","image":"\u2111","ImaginaryI":"\u2148","imagline":"\u2110","imagpart":"\u2111","imath":"\u0131","Im":"\u2111","imof":"\u22B7","imped":"\u01B5","Implies":"\u21D2","incare":"\u2105","in":"\u2208","infin":"\u221E","infintie":"\u29DD","inodot":"\u0131","intcal":"\u22BA","int":"\u222B","Int":"\u222C","integers":"\u2124","Integral":"\u222B","intercal":"\u22BA","Intersection":"\u22C2","intlarhk":"\u2A17","intprod":"\u2A3C","InvisibleComma":"\u2063","InvisibleTimes":"\u2062","IOcy":"\u0401","iocy":"\u0451","Iogon":"\u012E","iogon":"\u012F","Iopf":"\uD835\uDD40","iopf":"\uD835\uDD5A","Iota":"\u0399","iota":"\u03B9","iprod":"\u2A3C","iquest":"\u00BF","iscr":"\uD835\uDCBE","Iscr":"\u2110","isin":"\u2208","isindot":"\u22F5","isinE":"\u22F9","isins":"\u22F4","isinsv":"\u22F3","isinv":"\u2208","it":"\u2062","Itilde":"\u0128","itilde":"\u0129","Iukcy":"\u0406","iukcy":"\u0456","Iuml":"\u00CF","iuml":"\u00EF","Jcirc":"\u0134","jcirc":"\u0135","Jcy":"\u0419","jcy":"\u0439","Jfr":"\uD835\uDD0D","jfr":"\uD835\uDD27","jmath":"\u0237","Jopf":"\uD835\uDD41","jopf":"\uD835\uDD5B","Jscr":"\uD835\uDCA5","jscr":"\uD835\uDCBF","Jsercy":"\u0408","jsercy":"\u0458","Jukcy":"\u0404","jukcy":"\u0454","Kappa":"\u039A","kappa":"\u03BA","kappav":"\u03F0","Kcedil":"\u0136","kcedil":"\u0137","Kcy":"\u041A","kcy":"\u043A","Kfr":"\uD835\uDD0E","kfr":"\uD835\uDD28","kgreen":"\u0138","KHcy":"\u0425","khcy":"\u0445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2","nvlt":"<\u20D2","nvltrie":"\u22B4\u20D2","nvrArr":"\u2903","nvrtrie":"\u22B5\u20D2","nvsim":"\u223C\u20D2","nwarhk":"\u2923","nwarr":"\u2196","nwArr":"\u21D6","nwarrow":"\u2196","nwnear":"\u2927","Oacute":"\u00D3","oacute":"\u00F3","oast":"\u229B","Ocirc":"\u00D4","ocirc":"\u00F4","ocir":"\u229A","Ocy":"\u041E","ocy":"\u043E","odash":"\u229D","Odblac":"\u0150","odblac":"\u0151","odiv":"\u2A38","odot":"\u2299","odsold":"\u29BC","OElig":"\u0152","oelig":"\u0153","ofcir":"\u29BF","Ofr":"\uD835\uDD12","ofr":"\uD835\uDD2C","ogon":"\u02DB","Ograve":"\u00D2","ograve":"\u00F2","ogt":"\u29C1","ohbar":"\u29B5","ohm":"\u03A9","oint":"\u222E","olarr":"\u21BA","olcir":"\u29BE","olcross":"\u29BB","oline":"\u203E","olt":"\u29C0","Omacr":"\u014C","omacr":"\u014D","Omega":"\u03A9","omega":"\u03C9","Omicron":"\u039F","omicron":"\u03BF","omid":"\u29B6","ominus":"\u2296","Oopf":"\uD835\uDD46","oopf":"\uD835\uDD60","opar":"\u29B7","OpenCurlyDoubleQuote":"\u201C","OpenCurlyQuote":"\u2018","operp":"\u29B9","oplus":"\u2295","orarr":"\u21BB","Or":"\u2A54","or":"\u2228","ord":"\u2A5D","order":"\u2134","orderof":"\u2134","ordf":"\u00AA","ordm":"\u00BA","origof":"\u22B6","oror":"\u2A56","orslope":"\u2A57","orv":"\u2A5B","oS":"\u24C8","Oscr":"\uD835\uDCAA","oscr":"\u2134","Oslash":"\u00D8","oslash":"\u00F8","osol":"\u2298","Otilde":"\u00D5","otilde":"\u00F5","otimesas":"\u2A36","Otimes":"\u2A37","otimes":"\u2297","Ouml":"\u00D6","ouml":"\u00F6","ovbar":"\u233D","OverBar":"\u203E","OverBrace":"\u23DE","OverBracket":"\u23B4","OverParenthesis":"\u23DC","para":"\u00B6","parallel":"\u2225","par":"\u2225","parsim":"\u2AF3","parsl":"\u2AFD","part":"\u2202","PartialD":"\u2202","Pcy":"\u041F","pcy":"\u043F","percnt":"%","period":".","permil":"\u2030","perp":"\u22A5","pertenk":"\u2031","Pfr":"\uD835\uDD13","pfr":"\uD835\uDD2D","Phi":"\u03A6","phi":"\u03C6","phiv":"\u03D5","phmmat":"\u2133","phone":"\u260E","Pi":"\u03A0","pi":"\u03C0","pitchfork":"\u22D4","piv":"\u03D6","planck":"\u210F","planckh":"\u210E","plankv":"\u210F","plusacir":"\u2A23","plusb":"\u229E","pluscir":"\u2A22","plus":"+","plusdo":"\u2214","plusdu":"\u2A25","pluse":"\u2A72","PlusMinus":"\u00B1","plusmn":"\u00B1","plussim":"\u2A26","plustwo":"\u2A27","pm":"\u00B1","Poincareplane":"\u210C","pointint":"\u2A15","popf":"\uD835\uDD61","Popf":"\u2119","pound":"\u00A3","prap":"\u2AB7","Pr":"\u2ABB","pr":"\u227A","prcue":"\u227C","precapprox":"\u2AB7","prec":"\u227A","preccurlyeq":"\u227C","Precedes":"\u227A","PrecedesEqual":"\u2AAF","PrecedesSlantEqual":"\u227C","PrecedesTilde":"\u227E","preceq":"\u2AAF","precnapprox":"\u2AB9","precneqq":"\u2AB5","precnsim":"\u22E8","pre":"\u2AAF","prE":"\u2AB3","precsim":"\u227E","prime":"\u2032","Prime":"\u2033","primes":"\u2119","prnap":"\u2AB9","prnE":"\u2AB5","prnsim":"\u22E8","prod":"\u220F","Product":"\u220F","profalar":"\u232E","profline":"\u2312","profsurf":"\u2313","prop":"\u221D","Proportional":"\u221D","Proportion":"\u2237","propto":"\u221D","prsim":"\u227E","prurel":"\u22B0","Pscr":"\uD835\uDCAB","pscr":"\uD835\uDCC5","Psi":"\u03A8","psi":"\u03C8","puncsp":"\u2008","Qfr":"\uD835\uDD14","qfr":"\uD835\uDD2E","qint":"\u2A0C","qopf":"\uD835\uDD62","Qopf":"\u211A","qprime":"\u2057","Qscr":"\uD835\uDCAC","qscr":"\uD835\uDCC6","quaternions":"\u210D","quatint":"\u2A16","quest":"?","questeq":"\u225F","quot":"\"","QUOT":"\"","rAarr":"\u21DB","race":"\u223D\u0331","Racute":"\u0154","racute":"\u0155","radic":"\u221A","raemptyv":"\u29B3","rang":"\u27E9","Rang":"\u27EB","rangd":"\u2992","range":"\u29A5","rangle":"\u27E9","raquo":"\u00BB","rarrap":"\u2975","rarrb":"\u21E5","rarrbfs":"\u2920","rarrc":"\u2933","rarr":"\u2192","Rarr":"\u21A0","rArr":"\u21D2","rarrfs":"\u291E","rarrhk":"\u21AA","rarrlp":"\u21AC","rarrpl":"\u2945","rarrsim":"\u2974","Rarrtl":"\u2916","rarrtl":"\u21A3","rarrw":"\u219D","ratail":"\u291A","rAtail":"\u291C","ratio":"\u2236","rationals":"\u211A","rbarr":"\u290D","rBarr":"\u290F","RBarr":"\u2910","rbbrk":"\u2773","rbrace":"}","rbrack":"]","rbrke":"\u298C","rbrksld":"\u298E","rbrkslu":"\u2990","Rcaron":"\u0158","rcaron":"\u0159","Rcedil":"\u0156","rcedil":"\u0157","rceil":"\u2309","rcub":"}","Rcy":"\u0420","rcy":"\u0440","rdca":"\u2937","rdldhar":"\u2969","rdquo":"\u201D","rdquor":"\u201D","rdsh":"\u21B3","real":"\u211C","realine":"\u211B","realpart":"\u211C","reals":"\u211D","Re":"\u211C","rect":"\u25AD","reg":"\u00AE","REG":"\u00AE","ReverseElement":"\u220B","ReverseEquilibrium":"\u21CB","ReverseUpEquilibrium":"\u296F","rfisht":"\u297D","rfloor":"\u230B","rfr":"\uD835\uDD2F","Rfr":"\u211C","rHar":"\u2964","rhard":"\u21C1","rharu":"\u21C0","rharul":"\u296C","Rho":"\u03A1","rho":"\u03C1","rhov":"\u03F1","RightAngleBracket":"\u27E9","RightArrowBar":"\u21E5","rightarrow":"\u2192","RightArrow":"\u2192","Rightarrow":"\u21D2","RightArrowLeftArrow":"\u21C4","rightarrowtail":"\u21A3","RightCeiling":"\u2309","RightDoubleBracket":"\u27E7","RightDownTeeVector":"\u295D","RightDownVectorBar":"\u2955","RightDownVector":"\u21C2","RightFloor":"\u230B","rightharpoondown":"\u21C1","rightharpoonup":"\u21C0","rightleftarrows":"\u21C4","rightleftharpoons":"\u21CC","rightrightarrows":"\u21C9","rightsquigarrow":"\u219D","RightTeeArrow":"\u21A6","RightTee":"\u22A2","RightTeeVector":"\u295B","rightthreetimes":"\u22CC","RightTriangleBar":"\u29D0","RightTriangle":"\u22B3","RightTriangleEqual":"\u22B5","RightUpDownVector":"\u294F","RightUpTeeVector":"\u295C","RightUpVectorBar":"\u2954","RightUpVector":"\u21BE","RightVectorBar":"\u2953","RightVector":"\u21C0","ring":"\u02DA","risingdotseq":"\u2253","rlarr":"\u21C4","rlhar":"\u21CC","rlm":"\u200F","rmoustache":"\u23B1","rmoust":"\u23B1","rnmid":"\u2AEE","roang":"\u27ED","roarr":"\u21FE","robrk":"\u27E7","ropar":"\u2986","ropf":"\uD835\uDD63","Ropf":"\u211D","roplus":"\u2A2E","rotimes":"\u2A35","RoundImplies":"\u2970","rpar":")","rpargt":"\u2994","rppolint":"\u2A12","rrarr":"\u21C9","Rrightarrow":"\u21DB","rsaquo":"\u203A","rscr":"\uD835\uDCC7","Rscr":"\u211B","rsh":"\u21B1","Rsh":"\u21B1","rsqb":"]","rsquo":"\u2019","rsquor":"\u2019","rthree":"\u22CC","rtimes":"\u22CA","rtri":"\u25B9","rtrie":"\u22B5","rtrif":"\u25B8","rtriltri":"\u29CE","RuleDelayed":"\u29F4","ruluhar":"\u2968","rx":"\u211E","Sacute":"\u015A","sacute":"\u015B","sbquo":"\u201A","scap":"\u2AB8","Scaron":"\u0160","scaron":"\u0161","Sc":"\u2ABC","sc":"\u227B","sccue":"\u227D","sce":"\u2AB0","scE":"\u2AB4","Scedil":"\u015E","scedil":"\u015F","Scirc":"\u015C","scirc":"\u015D","scnap":"\u2ABA","scnE":"\u2AB6","scnsim":"\u22E9","scpolint":"\u2A13","scsim":"\u227F","Scy":"\u0421","scy":"\u0441","sdotb":"\u22A1","sdot":"\u22C5","sdote":"\u2A66","searhk":"\u2925","searr":"\u2198","seArr":"\u21D8","searrow":"\u2198","sect":"\u00A7","semi":";","seswar":"\u2929","setminus":"\u2216","setmn":"\u2216","sext":"\u2736","Sfr":"\uD835\uDD16","sfr":"\uD835\uDD30","sfrown":"\u2322","sharp":"\u266F","SHCHcy":"\u0429","shchcy":"\u0449","SHcy":"\u0428","shcy":"\u0448","ShortDownArrow":"\u2193","ShortLeftArrow":"\u2190","shortmid":"\u2223","shortparallel":"\u2225","ShortRightArrow":"\u2192","ShortUpArrow":"\u2191","shy":"\u00AD","Sigma":"\u03A3","sigma":"\u03C3","sigmaf":"\u03C2","sigmav":"\u03C2","sim":"\u223C","simdot":"\u2A6A","sime":"\u2243","simeq":"\u2243","simg":"\u2A9E","simgE":"\u2AA0","siml":"\u2A9D","simlE":"\u2A9F","simne":"\u2246","simplus":"\u2A24","simrarr":"\u2972","slarr":"\u2190","SmallCircle":"\u2218","smallsetminus":"\u2216","smashp":"\u2A33","smeparsl":"\u29E4","smid":"\u2223","smile":"\u2323","smt":"\u2AAA","smte":"\u2AAC","smtes":"\u2AAC\uFE00","SOFTcy":"\u042C","softcy":"\u044C","solbar":"\u233F","solb":"\u29C4","sol":"/","Sopf":"\uD835\uDD4A","sopf":"\uD835\uDD64","spades":"\u2660","spadesuit":"\u2660","spar":"\u2225","sqcap":"\u2293","sqcaps":"\u2293\uFE00","sqcup":"\u2294","sqcups":"\u2294\uFE00","Sqrt":"\u221A","sqsub":"\u228F","sqsube":"\u2291","sqsubset":"\u228F","sqsubseteq":"\u2291","sqsup":"\u2290","sqsupe":"\u2292","sqsupset":"\u2290","sqsupseteq":"\u2292","square":"\u25A1","Square":"\u25A1","SquareIntersection":"\u2293","SquareSubset":"\u228F","SquareSubsetEqual":"\u2291","SquareSuperset":"\u2290","SquareSupersetEqual":"\u2292","SquareUnion":"\u2294","squarf":"\u25AA","squ":"\u25A1","squf":"\u25AA","srarr":"\u2192","Sscr":"\uD835\uDCAE","sscr":"\uD835\uDCC8","ssetmn":"\u2216","ssmile":"\u2323","sstarf":"\u22C6","Star":"\u22C6","star":"\u2606","starf":"\u2605","straightepsilon":"\u03F5","straightphi":"\u03D5","strns":"\u00AF","sub":"\u2282","Sub":"\u22D0","subdot":"\u2ABD","subE":"\u2AC5","sube":"\u2286","subedot":"\u2AC3","submult":"\u2AC1","subnE":"\u2ACB","subne":"\u228A","subplus":"\u2ABF","subrarr":"\u2979","subset":"\u2282","Subset":"\u22D0","subseteq":"\u2286","subseteqq":"\u2AC5","SubsetEqual":"\u2286","subsetneq":"\u228A","subsetneqq":"\u2ACB","subsim":"\u2AC7","subsub":"\u2AD5","subsup":"\u2AD3","succapprox":"\u2AB8","succ":"\u227B","succcurlyeq":"\u227D","Succeeds":"\u227B","SucceedsEqual":"\u2AB0","SucceedsSlantEqual":"\u227D","SucceedsTilde":"\u227F","succeq":"\u2AB0","succnapprox":"\u2ABA","succneqq":"\u2AB6","succnsim":"\u22E9","succsim":"\u227F","SuchThat":"\u220B","sum":"\u2211","Sum":"\u2211","sung":"\u266A","sup1":"\u00B9","sup2":"\u00B2","sup3":"\u00B3","sup":"\u2283","Sup":"\u22D1","supdot":"\u2ABE","supdsub":"\u2AD8","supE":"\u2AC6","supe":"\u2287","supedot":"\u2AC4","Superset":"\u2283","SupersetEqual":"\u2287","suphsol":"\u27C9","suphsub":"\u2AD7","suplarr":"\u297B","supmult":"\u2AC2","supnE":"\u2ACC","supne":"\u228B","supplus":"\u2AC0","supset":"\u2283","Supset":"\u22D1","supseteq":"\u2287","supseteqq":"\u2AC6","supsetneq":"\u228B","supsetneqq":"\u2ACC","supsim":"\u2AC8","supsub":"\u2AD4","supsup":"\u2AD6","swarhk":"\u2926","swarr":"\u2199","swArr":"\u21D9","swarrow":"\u2199","swnwar":"\u292A","szlig":"\u00DF","Tab":"\t","target":"\u2316","Tau":"\u03A4","tau":"\u03C4","tbrk":"\u23B4","Tcaron":"\u0164","tcaron":"\u0165","Tcedil":"\u0162","tcedil":"\u0163","Tcy":"\u0422","tcy":"\u0442","tdot":"\u20DB","telrec":"\u2315","Tfr":"\uD835\uDD17","tfr":"\uD835\uDD31","there4":"\u2234","therefore":"\u2234","Therefore":"\u2234","Theta":"\u0398","theta":"\u03B8","thetasym":"\u03D1","thetav":"\u03D1","thickapprox":"\u2248","thicksim":"\u223C","ThickSpace":"\u205F\u200A","ThinSpace":"\u2009","thinsp":"\u2009","thkap":"\u2248","thksim":"\u223C","THORN":"\u00DE","thorn":"\u00FE","tilde":"\u02DC","Tilde":"\u223C","TildeEqual":"\u2243","TildeFullEqual":"\u2245","TildeTilde":"\u2248","timesbar":"\u2A31","timesb":"\u22A0","times":"\u00D7","timesd":"\u2A30","tint":"\u222D","toea":"\u2928","topbot":"\u2336","topcir":"\u2AF1","top":"\u22A4","Topf":"\uD835\uDD4B","topf":"\uD835\uDD65","topfork":"\u2ADA","tosa":"\u2929","tprime":"\u2034","trade":"\u2122","TRADE":"\u2122","triangle":"\u25B5","triangledown":"\u25BF","triangleleft":"\u25C3","trianglelefteq":"\u22B4","triangleq":"\u225C","triangleright":"\u25B9","trianglerighteq":"\u22B5","tridot":"\u25EC","trie":"\u225C","triminus":"\u2A3A","TripleDot":"\u20DB","triplus":"\u2A39","trisb":"\u29CD","tritime":"\u2A3B","trpezium":"\u23E2","Tscr":"\uD835\uDCAF","tscr":"\uD835\uDCC9","TScy":"\u0426","tscy":"\u0446","TSHcy":"\u040B","tshcy":"\u045B","Tstrok":"\u0166","tstrok":"\u0167","twixt":"\u226C","twoheadleftarrow":"\u219E","twoheadrightarrow":"\u21A0","Uacute":"\u00DA","uacute":"\u00FA","uarr":"\u2191","Uarr":"\u219F","uArr":"\u21D1","Uarrocir":"\u2949","Ubrcy":"\u040E","ubrcy":"\u045E","Ubreve":"\u016C","ubreve":"\u016D","Ucirc":"\u00DB","ucirc":"\u00FB","Ucy":"\u0423","ucy":"\u0443","udarr":"\u21C5","Udblac":"\u0170","udblac":"\u0171","udhar":"\u296E","ufisht":"\u297E","Ufr":"\uD835\uDD18","ufr":"\uD835\uDD32","Ugrave":"\u00D9","ugrave":"\u00F9","uHar":"\u2963","uharl":"\u21BF","uharr":"\u21BE","uhblk":"\u2580","ulcorn":"\u231C","ulcorner":"\u231C","ulcrop":"\u230F","ultri":"\u25F8","Umacr":"\u016A","umacr":"\u016B","uml":"\u00A8","UnderBar":"_","UnderBrace":"\u23DF","UnderBracket":"\u23B5","UnderParenthesis":"\u23DD","Union":"\u22C3","UnionPlus":"\u228E","Uogon":"\u0172","uogon":"\u0173","Uopf":"\uD835\uDD4C","uopf":"\uD835\uDD66","UpArrowBar":"\u2912","uparrow":"\u2191","UpArrow":"\u2191","Uparrow":"\u21D1","UpArrowDownArrow":"\u21C5","updownarrow":"\u2195","UpDownArrow":"\u2195","Updownarrow":"\u21D5","UpEquilibrium":"\u296E","upharpoonleft":"\u21BF","upharpoonright":"\u21BE","uplus":"\u228E","UpperLeftArrow":"\u2196","UpperRightArrow":"\u2197","upsi":"\u03C5","Upsi":"\u03D2","upsih":"\u03D2","Upsilon":"\u03A5","upsilon":"\u03C5","UpTeeArrow":"\u21A5","UpTee":"\u22A5","upuparrows":"\u21C8","urcorn":"\u231D","urcorner":"\u231D","urcrop":"\u230E","Uring":"\u016E","uring":"\u016F","urtri":"\u25F9","Uscr":"\uD835\uDCB0","uscr":"\uD835\uDCCA","utdot":"\u22F0","Utilde":"\u0168","utilde":"\u0169","utri":"\u25B5","utrif":"\u25B4","uuarr":"\u21C8","Uuml":"\u00DC","uuml":"\u00FC","uwangle":"\u29A7","vangrt":"\u299C","varepsilon":"\u03F5","varkappa":"\u03F0","varnothing":"\u2205","varphi":"\u03D5","varpi":"\u03D6","varpropto":"\u221D","varr":"\u2195","vArr":"\u21D5","varrho":"\u03F1","varsigma":"\u03C2","varsubsetneq":"\u228A\uFE00","varsubsetneqq":"\u2ACB\uFE00","varsupsetneq":"\u228B\uFE00","varsupsetneqq":"\u2ACC\uFE00","vartheta":"\u03D1","vartriangleleft":"\u22B2","vartriangleright":"\u22B3","vBar":"\u2AE8","Vbar":"\u2AEB","vBarv":"\u2AE9","Vcy":"\u0412","vcy":"\u0432","vdash":"\u22A2","vDash":"\u22A8","Vdash":"\u22A9","VDash":"\u22AB","Vdashl":"\u2AE6","veebar":"\u22BB","vee":"\u2228","Vee":"\u22C1","veeeq":"\u225A","vellip":"\u22EE","verbar":"|","Verbar":"\u2016","vert":"|","Vert":"\u2016","VerticalBar":"\u2223","VerticalLine":"|","VerticalSeparator":"\u2758","VerticalTilde":"\u2240","VeryThinSpace":"\u200A","Vfr":"\uD835\uDD19","vfr":"\uD835\uDD33","vltri":"\u22B2","vnsub":"\u2282\u20D2","vnsup":"\u2283\u20D2","Vopf":"\uD835\uDD4D","vopf":"\uD835\uDD67","vprop":"\u221D","vrtri":"\u22B3","Vscr":"\uD835\uDCB1","vscr":"\uD835\uDCCB","vsubnE":"\u2ACB\uFE00","vsubne":"\u228A\uFE00","vsupnE":"\u2ACC\uFE00","vsupne":"\u228B\uFE00","Vvdash":"\u22AA","vzigzag":"\u299A","Wcirc":"\u0174","wcirc":"\u0175","wedbar":"\u2A5F","wedge":"\u2227","Wedge":"\u22C0","wedgeq":"\u2259","weierp":"\u2118","Wfr":"\uD835\uDD1A","wfr":"\uD835\uDD34","Wopf":"\uD835\uDD4E","wopf":"\uD835\uDD68","wp":"\u2118","wr":"\u2240","wreath":"\u2240","Wscr":"\uD835\uDCB2","wscr":"\uD835\uDCCC","xcap":"\u22C2","xcirc":"\u25EF","xcup":"\u22C3","xdtri":"\u25BD","Xfr":"\uD835\uDD1B","xfr":"\uD835\uDD35","xharr":"\u27F7","xhArr":"\u27FA","Xi":"\u039E","xi":"\u03BE","xlarr":"\u27F5","xlArr":"\u27F8","xmap":"\u27FC","xnis":"\u22FB","xodot":"\u2A00","Xopf":"\uD835\uDD4F","xopf":"\uD835\uDD69","xoplus":"\u2A01","xotime":"\u2A02","xrarr":"\u27F6","xrArr":"\u27F9","Xscr":"\uD835\uDCB3","xscr":"\uD835\uDCCD","xsqcup":"\u2A06","xuplus":"\u2A04","xutri":"\u25B3","xvee":"\u22C1","xwedge":"\u22C0","Yacute":"\u00DD","yacute":"\u00FD","YAcy":"\u042F","yacy":"\u044F","Ycirc":"\u0176","ycirc":"\u0177","Ycy":"\u042B","ycy":"\u044B","yen":"\u00A5","Yfr":"\uD835\uDD1C","yfr":"\uD835\uDD36","YIcy":"\u0407","yicy":"\u0457","Yopf":"\uD835\uDD50","yopf":"\uD835\uDD6A","Yscr":"\uD835\uDCB4","yscr":"\uD835\uDCCE","YUcy":"\u042E","yucy":"\u044E","yuml":"\u00FF","Yuml":"\u0178","Zacute":"\u0179","zacute":"\u017A","Zcaron":"\u017D","zcaron":"\u017E","Zcy":"\u0417","zcy":"\u0437","Zdot":"\u017B","zdot":"\u017C","zeetrf":"\u2128","ZeroWidthSpace":"\u200B","Zeta":"\u0396","zeta":"\u03B6","zfr":"\uD835\uDD37","Zfr":"\u2128","ZHcy":"\u0416","zhcy":"\u0436","zigrarr":"\u21DD","zopf":"\uD835\uDD6B","Zopf":"\u2124","Zscr":"\uD835\uDCB5","zscr":"\uD835\uDCCF","zwj":"\u200D","zwnj":"\u200C"}
},{}],35:[function(require,module,exports){
module.exports={"Aacute":"\u00C1","aacute":"\u00E1","Acirc":"\u00C2","acirc":"\u00E2","acute":"\u00B4","AElig":"\u00C6","aelig":"\u00E6","Agrave":"\u00C0","agrave":"\u00E0","amp":"&","AMP":"&","Aring":"\u00C5","aring":"\u00E5","Atilde":"\u00C3","atilde":"\u00E3","Auml":"\u00C4","auml":"\u00E4","brvbar":"\u00A6","Ccedil":"\u00C7","ccedil":"\u00E7","cedil":"\u00B8","cent":"\u00A2","copy":"\u00A9","COPY":"\u00A9","curren":"\u00A4","deg":"\u00B0","divide":"\u00F7","Eacute":"\u00C9","eacute":"\u00E9","Ecirc":"\u00CA","ecirc":"\u00EA","Egrave":"\u00C8","egrave":"\u00E8","ETH":"\u00D0","eth":"\u00F0","Euml":"\u00CB","euml":"\u00EB","frac12":"\u00BD","frac14":"\u00BC","frac34":"\u00BE","gt":">","GT":">","Iacute":"\u00CD","iacute":"\u00ED","Icirc":"\u00CE","icirc":"\u00EE","iexcl":"\u00A1","Igrave":"\u00CC","igrave":"\u00EC","iquest":"\u00BF","Iuml":"\u00CF","iuml":"\u00EF","laquo":"\u00AB","lt":"<","LT":"<","macr":"\u00AF","micro":"\u00B5","middot":"\u00B7","nbsp":"\u00A0","not":"\u00AC","Ntilde":"\u00D1","ntilde":"\u00F1","Oacute":"\u00D3","oacute":"\u00F3","Ocirc":"\u00D4","ocirc":"\u00F4","Ograve":"\u00D2","ograve":"\u00F2","ordf":"\u00AA","ordm":"\u00BA","Oslash":"\u00D8","oslash":"\u00F8","Otilde":"\u00D5","otilde":"\u00F5","Ouml":"\u00D6","ouml":"\u00F6","para":"\u00B6","plusmn":"\u00B1","pound":"\u00A3","quot":"\"","QUOT":"\"","raquo":"\u00BB","reg":"\u00AE","REG":"\u00AE","sect":"\u00A7","shy":"\u00AD","sup1":"\u00B9","sup2":"\u00B2","sup3":"\u00B3","szlig":"\u00DF","THORN":"\u00DE","thorn":"\u00FE","times":"\u00D7","Uacute":"\u00DA","uacute":"\u00FA","Ucirc":"\u00DB","ucirc":"\u00FB","Ugrave":"\u00D9","ugrave":"\u00F9","uml":"\u00A8","Uuml":"\u00DC","uuml":"\u00FC","Yacute":"\u00DD","yacute":"\u00FD","yen":"\u00A5","yuml":"\u00FF"}
},{}],36:[function(require,module,exports){
module.exports={"amp":"&","apos":"'","gt":">","lt":"<","quot":"\""}

},{}],37:[function(require,module,exports){
module.exports = CollectingHandler;

function CollectingHandler(cbs){
	this._cbs = cbs || {};
	this.events = [];
}

var EVENTS = require("./").EVENTS;
Object.keys(EVENTS).forEach(function(name){
	if(EVENTS[name] === 0){
		name = "on" + name;
		CollectingHandler.prototype[name] = function(){
			this.events.push([name]);
			if(this._cbs[name]) this._cbs[name]();
		};
	} else if(EVENTS[name] === 1){
		name = "on" + name;
		CollectingHandler.prototype[name] = function(a){
			this.events.push([name, a]);
			if(this._cbs[name]) this._cbs[name](a);
		};
	} else if(EVENTS[name] === 2){
		name = "on" + name;
		CollectingHandler.prototype[name] = function(a, b){
			this.events.push([name, a, b]);
			if(this._cbs[name]) this._cbs[name](a, b);
		};
	} else {
		throw Error("wrong number of arguments");
	}
});

CollectingHandler.prototype.onreset = function(){
	this.events = [];
	if(this._cbs.onreset) this._cbs.onreset();
};

CollectingHandler.prototype.restart = function(){
	if(this._cbs.onreset) this._cbs.onreset();

	for(var i = 0, len = this.events.length; i < len; i++){
		if(this._cbs[this.events[i][0]]){

			var num = this.events[i].length;

			if(num === 1){
				this._cbs[this.events[i][0]]();
			} else if(num === 2){
				this._cbs[this.events[i][0]](this.events[i][1]);
			} else {
				this._cbs[this.events[i][0]](this.events[i][1], this.events[i][2]);
			}
		}
	}
};

},{"./":44}],38:[function(require,module,exports){
var index = require("./index.js"),
    DomHandler = index.DomHandler,
	DomUtils = index.DomUtils;

//TODO: make this a streamable handler
function FeedHandler(callback, options){
	this.init(callback, options);
}

require("util").inherits(FeedHandler, DomHandler);

FeedHandler.prototype.init = DomHandler;

function getElements(what, where){
	return DomUtils.getElementsByTagName(what, where, true);
}
function getOneElement(what, where){
	return DomUtils.getElementsByTagName(what, where, true, 1)[0];
}
function fetch(what, where, recurse){
	return DomUtils.getText(
		DomUtils.getElementsByTagName(what, where, recurse, 1)
	).trim();
}

function addConditionally(obj, prop, what, where, recurse){
	var tmp = fetch(what, where, recurse);
	if(tmp) obj[prop] = tmp;
}

var isValidFeed = function(value){
	return value === "rss" || value === "feed" || value === "rdf:RDF";
};

FeedHandler.prototype.onend = function(){
	var feed = {},
		feedRoot = getOneElement(isValidFeed, this.dom),
		tmp, childs;

	if(feedRoot){
		if(feedRoot.name === "feed"){
			childs = feedRoot.children;

			feed.type = "atom";
			addConditionally(feed, "id", "id", childs);
			addConditionally(feed, "title", "title", childs);
			if((tmp = getOneElement("link", childs)) && (tmp = tmp.attribs) && (tmp = tmp.href)) feed.link = tmp;
			addConditionally(feed, "description", "subtitle", childs);
			if((tmp = fetch("updated", childs))) feed.updated = new Date(tmp);
			addConditionally(feed, "author", "email", childs, true);

			feed.items = getElements("entry", childs).map(function(item){
				var entry = {}, tmp;

				item = item.children;

				addConditionally(entry, "id", "id", item);
				addConditionally(entry, "title", "title", item);
				if((tmp = getOneElement("link", item)) && (tmp = tmp.attribs) && (tmp = tmp.href)) entry.link = tmp;
				if((tmp = fetch("summary", item) || fetch("content", item))) entry.description = tmp;
				if((tmp = fetch("updated", item))) entry.pubDate = new Date(tmp);
				return entry;
			});
		} else {
			childs = getOneElement("channel", feedRoot.children).children;

			feed.type = feedRoot.name.substr(0, 3);
			feed.id = "";
			addConditionally(feed, "title", "title", childs);
			addConditionally(feed, "link", "link", childs);
			addConditionally(feed, "description", "description", childs);
			if((tmp = fetch("lastBuildDate", childs))) feed.updated = new Date(tmp);
			addConditionally(feed, "author", "managingEditor", childs, true);

			feed.items = getElements("item", feedRoot.children).map(function(item){
				var entry = {}, tmp;

				item = item.children;

				addConditionally(entry, "id", "guid", item);
				addConditionally(entry, "title", "title", item);
				addConditionally(entry, "link", "link", item);
				addConditionally(entry, "description", "description", item);
				if((tmp = fetch("pubDate", item))) entry.pubDate = new Date(tmp);
				return entry;
			});
		}
	}
	this.dom = feed;
	DomHandler.prototype._handleCallback.call(
		this, feedRoot ? null : Error("couldn't find root of feed")
	);
};

module.exports = FeedHandler;

},{"./index.js":44,"util":106}],39:[function(require,module,exports){
var Tokenizer = require("./Tokenizer.js");

/*
	Options:

	xmlMode: Special behavior for script/style tags (true by default)
	lowerCaseAttributeNames: call .toLowerCase for each attribute name (true if xmlMode is `false`)
	lowerCaseTags: call .toLowerCase for each tag name (true if xmlMode is `false`)
*/

/*
	Callbacks:

	oncdataend,
	oncdatastart,
	onclosetag,
	oncomment,
	oncommentend,
	onerror,
	onopentag,
	onprocessinginstruction,
	onreset,
	ontext
*/

var formTags = {
	input: true,
	option: true,
	optgroup: true,
	select: true,
	button: true,
	datalist: true,
	textarea: true
};

var openImpliesClose = {
	tr      : { tr:true, th:true, td:true },
	th      : { th:true },
	td      : { thead:true, td:true },
	body    : { head:true, link:true, script:true },
	li      : { li:true },
	p       : { p:true },
	h1      : { p:true },
	h2      : { p:true },
	h3      : { p:true },
	h4      : { p:true },
	h5      : { p:true },
	h6      : { p:true },
	select  : formTags,
	input   : formTags,
	output  : formTags,
	button  : formTags,
	datalist: formTags,
	textarea: formTags,
	option  : { option:true },
	optgroup: { optgroup:true }
};

var voidElements = {
	__proto__: null,
	area: true,
	base: true,
	basefont: true,
	br: true,
	col: true,
	command: true,
	embed: true,
	frame: true,
	hr: true,
	img: true,
	input: true,
	isindex: true,
	keygen: true,
	link: true,
	meta: true,
	param: true,
	source: true,
	track: true,
	wbr: true,

	//common self closing svg elements
	path: true,
	circle: true,
	ellipse: true,
	line: true,
	rect: true,
	use: true,
	stop: true,
	polyline: true,
	polygone: true
};

var re_nameEnd = /\s|\//;

function Parser(cbs, options){
	this._options = options || {};
	this._cbs = cbs || {};

	this._tagname = "";
	this._attribname = "";
	this._attribvalue = "";
	this._attribs = null;
	this._stack = [];

	this.startIndex = 0;
	this.endIndex = null;

	this._lowerCaseTagNames = "lowerCaseTags" in this._options ?
									!!this._options.lowerCaseTags :
									!this._options.xmlMode;
	this._lowerCaseAttributeNames = "lowerCaseAttributeNames" in this._options ?
									!!this._options.lowerCaseAttributeNames :
									!this._options.xmlMode;

	this._tokenizer = new Tokenizer(this._options, this);

	if(this._cbs.onparserinit) this._cbs.onparserinit(this);
}

require("util").inherits(Parser, require("events").EventEmitter);

Parser.prototype._updatePosition = function(initialOffset){
	if(this.endIndex === null){
		if(this._tokenizer._sectionStart <= initialOffset){
			this.startIndex = 0;
		} else {
			this.startIndex = this._tokenizer._sectionStart - initialOffset;
		}
	}
	else this.startIndex = this.endIndex + 1;
	this.endIndex = this._tokenizer.getAbsoluteIndex();
};

//Tokenizer event handlers
Parser.prototype.ontext = function(data){
	this._updatePosition(1);
	this.endIndex--;

	if(this._cbs.ontext) this._cbs.ontext(data);
};

Parser.prototype.onopentagname = function(name){
	if(this._lowerCaseTagNames){
		name = name.toLowerCase();
	}

	this._tagname = name;

	if(!this._options.xmlMode && name in openImpliesClose) {
		for(
			var el;
			(el = this._stack[this._stack.length - 1]) in openImpliesClose[name];
			this.onclosetag(el)
		);
	}

	if(this._options.xmlMode || !(name in voidElements)){
		this._stack.push(name);
	}

	if(this._cbs.onopentagname) this._cbs.onopentagname(name);
	if(this._cbs.onopentag) this._attribs = {};
};

Parser.prototype.onopentagend = function(){
	this._updatePosition(1);

	if(this._attribs){
		if(this._cbs.onopentag) this._cbs.onopentag(this._tagname, this._attribs);
		this._attribs = null;
	}

	if(!this._options.xmlMode && this._cbs.onclosetag && this._tagname in voidElements){
		this._cbs.onclosetag(this._tagname);
	}

	this._tagname = "";
};

Parser.prototype.onclosetag = function(name){
	this._updatePosition(1);

	if(this._lowerCaseTagNames){
		name = name.toLowerCase();
	}

	if(this._stack.length && (!(name in voidElements) || this._options.xmlMode)){
		var pos = this._stack.lastIndexOf(name);
		if(pos !== -1){
			if(this._cbs.onclosetag){
				pos = this._stack.length - pos;
				while(pos--) this._cbs.onclosetag(this._stack.pop());
			}
			else this._stack.length = pos;
		} else if(name === "p" && !this._options.xmlMode){
			this.onopentagname(name);
			this._closeCurrentTag();
		}
	} else if(!this._options.xmlMode && (name === "br" || name === "p")){
		this.onopentagname(name);
		this._closeCurrentTag();
	}
};

Parser.prototype.onselfclosingtag = function(){
	if(this._options.xmlMode || this._options.recognizeSelfClosing){
		this._closeCurrentTag();
	} else {
		this.onopentagend();
	}
};

Parser.prototype._closeCurrentTag = function(){
	var name = this._tagname;

	this.onopentagend();

	//self-closing tags will be on the top of the stack
	//(cheaper check than in onclosetag)
	if(this._stack[this._stack.length - 1] === name){
		if(this._cbs.onclosetag){
			this._cbs.onclosetag(name);
		}
		this._stack.pop();
	}
};

Parser.prototype.onattribname = function(name){
	if(this._lowerCaseAttributeNames){
		name = name.toLowerCase();
	}
	this._attribname = name;
};

Parser.prototype.onattribdata = function(value){
	this._attribvalue += value;
};

Parser.prototype.onattribend = function(){
	if(this._cbs.onattribute) this._cbs.onattribute(this._attribname, this._attribvalue);
	if(
		this._attribs &&
		!Object.prototype.hasOwnProperty.call(this._attribs, this._attribname)
	){
		this._attribs[this._attribname] = this._attribvalue;
	}
	this._attribname = "";
	this._attribvalue = "";
};

Parser.prototype._getInstructionName = function(value){
	var idx = value.search(re_nameEnd),
	    name = idx < 0 ? value : value.substr(0, idx);

	if(this._lowerCaseTagNames){
		name = name.toLowerCase();
	}

	return name;
};

Parser.prototype.ondeclaration = function(value){
	if(this._cbs.onprocessinginstruction){
		var name = this._getInstructionName(value);
		this._cbs.onprocessinginstruction("!" + name, "!" + value);
	}
};

Parser.prototype.onprocessinginstruction = function(value){
	if(this._cbs.onprocessinginstruction){
		var name = this._getInstructionName(value);
		this._cbs.onprocessinginstruction("?" + name, "?" + value);
	}
};

Parser.prototype.oncomment = function(value){
	this._updatePosition(4);

	if(this._cbs.oncomment) this._cbs.oncomment(value);
	if(this._cbs.oncommentend) this._cbs.oncommentend();
};

Parser.prototype.oncdata = function(value){
	this._updatePosition(1);

	if(this._options.xmlMode || this._options.recognizeCDATA){
		if(this._cbs.oncdatastart) this._cbs.oncdatastart();
		if(this._cbs.ontext) this._cbs.ontext(value);
		if(this._cbs.oncdataend) this._cbs.oncdataend();
	} else {
		this.oncomment("[CDATA[" + value + "]]");
	}
};

Parser.prototype.onerror = function(err){
	if(this._cbs.onerror) this._cbs.onerror(err);
};

Parser.prototype.onend = function(){
	if(this._cbs.onclosetag){
		for(
			var i = this._stack.length;
			i > 0;
			this._cbs.onclosetag(this._stack[--i])
		);
	}
	if(this._cbs.onend) this._cbs.onend();
};


//Resets the parser to a blank state, ready to parse a new HTML document
Parser.prototype.reset = function(){
	if(this._cbs.onreset) this._cbs.onreset();
	this._tokenizer.reset();

	this._tagname = "";
	this._attribname = "";
	this._attribs = null;
	this._stack = [];

	if(this._cbs.onparserinit) this._cbs.onparserinit(this);
};

//Parses a complete HTML document and pushes it to the handler
Parser.prototype.parseComplete = function(data){
	this.reset();
	this.end(data);
};

Parser.prototype.write = function(chunk){
	this._tokenizer.write(chunk);
};

Parser.prototype.end = function(chunk){
	this._tokenizer.end(chunk);
};

Parser.prototype.pause = function(){
	this._tokenizer.pause();
};

Parser.prototype.resume = function(){
	this._tokenizer.resume();
};

//alias for backwards compat
Parser.prototype.parseChunk = Parser.prototype.write;
Parser.prototype.done = Parser.prototype.end;

module.exports = Parser;

},{"./Tokenizer.js":42,"events":87,"util":106}],40:[function(require,module,exports){
module.exports = ProxyHandler;

function ProxyHandler(cbs){
	this._cbs = cbs || {};
}

var EVENTS = require("./").EVENTS;
Object.keys(EVENTS).forEach(function(name){
	if(EVENTS[name] === 0){
		name = "on" + name;
		ProxyHandler.prototype[name] = function(){
			if(this._cbs[name]) this._cbs[name]();
		};
	} else if(EVENTS[name] === 1){
		name = "on" + name;
		ProxyHandler.prototype[name] = function(a){
			if(this._cbs[name]) this._cbs[name](a);
		};
	} else if(EVENTS[name] === 2){
		name = "on" + name;
		ProxyHandler.prototype[name] = function(a, b){
			if(this._cbs[name]) this._cbs[name](a, b);
		};
	} else {
		throw Error("wrong number of arguments");
	}
});
},{"./":44}],41:[function(require,module,exports){
module.exports = Stream;

var Parser = require("./WritableStream.js");

function Stream(options){
	Parser.call(this, new Cbs(this), options);
}

require("util").inherits(Stream, Parser);

Stream.prototype.readable = true;

function Cbs(scope){
	this.scope = scope;
}

var EVENTS = require("../").EVENTS;

Object.keys(EVENTS).forEach(function(name){
	if(EVENTS[name] === 0){
		Cbs.prototype["on" + name] = function(){
			this.scope.emit(name);
		};
	} else if(EVENTS[name] === 1){
		Cbs.prototype["on" + name] = function(a){
			this.scope.emit(name, a);
		};
	} else if(EVENTS[name] === 2){
		Cbs.prototype["on" + name] = function(a, b){
			this.scope.emit(name, a, b);
		};
	} else {
		throw Error("wrong number of arguments!");
	}
});
},{"../":44,"./WritableStream.js":43,"util":106}],42:[function(require,module,exports){
module.exports = Tokenizer;

var decodeCodePoint = require("entities/lib/decode_codepoint.js"),
    entityMap = require("entities/maps/entities.json"),
    legacyMap = require("entities/maps/legacy.json"),
    xmlMap    = require("entities/maps/xml.json"),

    i = 0,

    TEXT                      = i++,
    BEFORE_TAG_NAME           = i++, //after <
    IN_TAG_NAME               = i++,
    IN_SELF_CLOSING_TAG       = i++,
    BEFORE_CLOSING_TAG_NAME   = i++,
    IN_CLOSING_TAG_NAME       = i++,
    AFTER_CLOSING_TAG_NAME    = i++,

    //attributes
    BEFORE_ATTRIBUTE_NAME     = i++,
    IN_ATTRIBUTE_NAME         = i++,
    AFTER_ATTRIBUTE_NAME      = i++,
    BEFORE_ATTRIBUTE_VALUE    = i++,
    IN_ATTRIBUTE_VALUE_DQ     = i++, // "
    IN_ATTRIBUTE_VALUE_SQ     = i++, // '
    IN_ATTRIBUTE_VALUE_NQ     = i++,

    //declarations
    BEFORE_DECLARATION        = i++, // !
    IN_DECLARATION            = i++,

    //processing instructions
    IN_PROCESSING_INSTRUCTION = i++, // ?

    //comments
    BEFORE_COMMENT            = i++,
    IN_COMMENT                = i++,
    AFTER_COMMENT_1           = i++,
    AFTER_COMMENT_2           = i++,

    //cdata
    BEFORE_CDATA_1            = i++, // [
    BEFORE_CDATA_2            = i++, // C
    BEFORE_CDATA_3            = i++, // D
    BEFORE_CDATA_4            = i++, // A
    BEFORE_CDATA_5            = i++, // T
    BEFORE_CDATA_6            = i++, // A
    IN_CDATA                  = i++, // [
    AFTER_CDATA_1             = i++, // ]
    AFTER_CDATA_2             = i++, // ]

    //special tags
    BEFORE_SPECIAL            = i++, //S
    BEFORE_SPECIAL_END        = i++,   //S

    BEFORE_SCRIPT_1           = i++, //C
    BEFORE_SCRIPT_2           = i++, //R
    BEFORE_SCRIPT_3           = i++, //I
    BEFORE_SCRIPT_4           = i++, //P
    BEFORE_SCRIPT_5           = i++, //T
    AFTER_SCRIPT_1            = i++, //C
    AFTER_SCRIPT_2            = i++, //R
    AFTER_SCRIPT_3            = i++, //I
    AFTER_SCRIPT_4            = i++, //P
    AFTER_SCRIPT_5            = i++, //T

    BEFORE_STYLE_1            = i++, //T
    BEFORE_STYLE_2            = i++, //Y
    BEFORE_STYLE_3            = i++, //L
    BEFORE_STYLE_4            = i++, //E
    AFTER_STYLE_1             = i++, //T
    AFTER_STYLE_2             = i++, //Y
    AFTER_STYLE_3             = i++, //L
    AFTER_STYLE_4             = i++, //E

    BEFORE_ENTITY             = i++, //&
    BEFORE_NUMERIC_ENTITY     = i++, //#
    IN_NAMED_ENTITY           = i++,
    IN_NUMERIC_ENTITY         = i++,
    IN_HEX_ENTITY             = i++, //X

    j = 0,

    SPECIAL_NONE              = j++,
    SPECIAL_SCRIPT            = j++,
    SPECIAL_STYLE             = j++;

function whitespace(c){
	return c === " " || c === "\n" || c === "\t" || c === "\f" || c === "\r";
}

function characterState(char, SUCCESS){
	return function(c){
		if(c === char) this._state = SUCCESS;
	};
}

function ifElseState(upper, SUCCESS, FAILURE){
	var lower = upper.toLowerCase();

	if(upper === lower){
		return function(c){
			if(c === lower){
				this._state = SUCCESS;
			} else {
				this._state = FAILURE;
				this._index--;
			}
		};
	} else {
		return function(c){
			if(c === lower || c === upper){
				this._state = SUCCESS;
			} else {
				this._state = FAILURE;
				this._index--;
			}
		};
	}
}

function consumeSpecialNameChar(upper, NEXT_STATE){
	var lower = upper.toLowerCase();

	return function(c){
		if(c === lower || c === upper){
			this._state = NEXT_STATE;
		} else {
			this._state = IN_TAG_NAME;
			this._index--; //consume the token again
		}
	};
}

function Tokenizer(options, cbs){
	this._state = TEXT;
	this._buffer = "";
	this._sectionStart = 0;
	this._index = 0;
	this._bufferOffset = 0; //chars removed from _buffer
	this._baseState = TEXT;
	this._special = SPECIAL_NONE;
	this._cbs = cbs;
	this._running = true;
	this._ended = false;
	this._xmlMode = !!(options && options.xmlMode);
	this._decodeEntities = !!(options && options.decodeEntities);
}

Tokenizer.prototype._stateText = function(c){
	if(c === "<"){
		if(this._index > this._sectionStart){
			this._cbs.ontext(this._getSection());
		}
		this._state = BEFORE_TAG_NAME;
		this._sectionStart = this._index;
	} else if(this._decodeEntities && this._special === SPECIAL_NONE && c === "&"){
		if(this._index > this._sectionStart){
			this._cbs.ontext(this._getSection());
		}
		this._baseState = TEXT;
		this._state = BEFORE_ENTITY;
		this._sectionStart = this._index;
	}
};

Tokenizer.prototype._stateBeforeTagName = function(c){
	if(c === "/"){
		this._state = BEFORE_CLOSING_TAG_NAME;
	} else if(c === ">" || this._special !== SPECIAL_NONE || whitespace(c)) {
		this._state = TEXT;
	} else if(c === "!"){
		this._state = BEFORE_DECLARATION;
		this._sectionStart = this._index + 1;
	} else if(c === "?"){
		this._state = IN_PROCESSING_INSTRUCTION;
		this._sectionStart = this._index + 1;
	} else if(c === "<"){
		this._cbs.ontext(this._getSection());
		this._sectionStart = this._index;
	} else {
		this._state = (!this._xmlMode && (c === "s" || c === "S")) ?
						BEFORE_SPECIAL : IN_TAG_NAME;
		this._sectionStart = this._index;
	}
};

Tokenizer.prototype._stateInTagName = function(c){
	if(c === "/" || c === ">" || whitespace(c)){
		this._emitToken("onopentagname");
		this._state = BEFORE_ATTRIBUTE_NAME;
		this._index--;
	}
};

Tokenizer.prototype._stateBeforeCloseingTagName = function(c){
	if(whitespace(c));
	else if(c === ">"){
		this._state = TEXT;
	} else if(this._special !== SPECIAL_NONE){
		if(c === "s" || c === "S"){
			this._state = BEFORE_SPECIAL_END;
		} else {
			this._state = TEXT;
			this._index--;
		}
	} else {
		this._state = IN_CLOSING_TAG_NAME;
		this._sectionStart = this._index;
	}
};

Tokenizer.prototype._stateInCloseingTagName = function(c){
	if(c === ">" || whitespace(c)){
		this._emitToken("onclosetag");
		this._state = AFTER_CLOSING_TAG_NAME;
		this._index--;
	}
};

Tokenizer.prototype._stateAfterCloseingTagName = function(c){
	//skip everything until ">"
	if(c === ">"){
		this._state = TEXT;
		this._sectionStart = this._index + 1;
	}
};

Tokenizer.prototype._stateBeforeAttributeName = function(c){
	if(c === ">"){
		this._cbs.onopentagend();
		this._state = TEXT;
		this._sectionStart = this._index + 1;
	} else if(c === "/"){
		this._state = IN_SELF_CLOSING_TAG;
	} else if(!whitespace(c)){
		this._state = IN_ATTRIBUTE_NAME;
		this._sectionStart = this._index;
	}
};

Tokenizer.prototype._stateInSelfClosingTag = function(c){
	if(c === ">"){
		this._cbs.onselfclosingtag();
		this._state = TEXT;
		this._sectionStart = this._index + 1;
	} else if(!whitespace(c)){
		this._state = BEFORE_ATTRIBUTE_NAME;
		this._index--;
	}
};

Tokenizer.prototype._stateInAttributeName = function(c){
	if(c === "=" || c === "/" || c === ">" || whitespace(c)){
		this._cbs.onattribname(this._getSection());
		this._sectionStart = -1;
		this._state = AFTER_ATTRIBUTE_NAME;
		this._index--;
	}
};

Tokenizer.prototype._stateAfterAttributeName = function(c){
	if(c === "="){
		this._state = BEFORE_ATTRIBUTE_VALUE;
	} else if(c === "/" || c === ">"){
		this._cbs.onattribend();
		this._state = BEFORE_ATTRIBUTE_NAME;
		this._index--;
	} else if(!whitespace(c)){
		this._cbs.onattribend();
		this._state = IN_ATTRIBUTE_NAME;
		this._sectionStart = this._index;
	}
};

Tokenizer.prototype._stateBeforeAttributeValue = function(c){
	if(c === "\""){
		this._state = IN_ATTRIBUTE_VALUE_DQ;
		this._sectionStart = this._index + 1;
	} else if(c === "'"){
		this._state = IN_ATTRIBUTE_VALUE_SQ;
		this._sectionStart = this._index + 1;
	} else if(!whitespace(c)){
		this._state = IN_ATTRIBUTE_VALUE_NQ;
		this._sectionStart = this._index;
		this._index--; //reconsume token
	}
};

Tokenizer.prototype._stateInAttributeValueDoubleQuotes = function(c){
	if(c === "\""){
		this._emitToken("onattribdata");
		this._cbs.onattribend();
		this._state = BEFORE_ATTRIBUTE_NAME;
	} else if(this._decodeEntities && c === "&"){
		this._emitToken("onattribdata");
		this._baseState = this._state;
		this._state = BEFORE_ENTITY;
		this._sectionStart = this._index;
	}
};

Tokenizer.prototype._stateInAttributeValueSingleQuotes = function(c){
	if(c === "'"){
		this._emitToken("onattribdata");
		this._cbs.onattribend();
		this._state = BEFORE_ATTRIBUTE_NAME;
	} else if(this._decodeEntities && c === "&"){
		this._emitToken("onattribdata");
		this._baseState = this._state;
		this._state = BEFORE_ENTITY;
		this._sectionStart = this._index;
	}
};

Tokenizer.prototype._stateInAttributeValueNoQuotes = function(c){
	if(whitespace(c) || c === ">"){
		this._emitToken("onattribdata");
		this._cbs.onattribend();
		this._state = BEFORE_ATTRIBUTE_NAME;
		this._index--;
	} else if(this._decodeEntities && c === "&"){
		this._emitToken("onattribdata");
		this._baseState = this._state;
		this._state = BEFORE_ENTITY;
		this._sectionStart = this._index;
	}
};

Tokenizer.prototype._stateBeforeDeclaration = function(c){
	this._state = c === "[" ? BEFORE_CDATA_1 :
					c === "-" ? BEFORE_COMMENT :
						IN_DECLARATION;
};

Tokenizer.prototype._stateInDeclaration = function(c){
	if(c === ">"){
		this._cbs.ondeclaration(this._getSection());
		this._state = TEXT;
		this._sectionStart = this._index + 1;
	}
};

Tokenizer.prototype._stateInProcessingInstruction = function(c){
	if(c === ">"){
		this._cbs.onprocessinginstruction(this._getSection());
		this._state = TEXT;
		this._sectionStart = this._index + 1;
	}
};

Tokenizer.prototype._stateBeforeComment = function(c){
	if(c === "-"){
		this._state = IN_COMMENT;
		this._sectionStart = this._index + 1;
	} else {
		this._state = IN_DECLARATION;
	}
};

Tokenizer.prototype._stateInComment = function(c){
	if(c === "-") this._state = AFTER_COMMENT_1;
};

Tokenizer.prototype._stateAfterComment1 = function(c){
	if(c === "-"){
		this._state = AFTER_COMMENT_2;
	} else {
		this._state = IN_COMMENT;
	}
};

Tokenizer.prototype._stateAfterComment2 = function(c){
	if(c === ">"){
		//remove 2 trailing chars
		this._cbs.oncomment(this._buffer.substring(this._sectionStart, this._index - 2));
		this._state = TEXT;
		this._sectionStart = this._index + 1;
	} else if(c !== "-"){
		this._state = IN_COMMENT;
	}
	// else: stay in AFTER_COMMENT_2 (`--->`)
};

Tokenizer.prototype._stateBeforeCdata1 = ifElseState("C", BEFORE_CDATA_2, IN_DECLARATION);
Tokenizer.prototype._stateBeforeCdata2 = ifElseState("D", BEFORE_CDATA_3, IN_DECLARATION);
Tokenizer.prototype._stateBeforeCdata3 = ifElseState("A", BEFORE_CDATA_4, IN_DECLARATION);
Tokenizer.prototype._stateBeforeCdata4 = ifElseState("T", BEFORE_CDATA_5, IN_DECLARATION);
Tokenizer.prototype._stateBeforeCdata5 = ifElseState("A", BEFORE_CDATA_6, IN_DECLARATION);

Tokenizer.prototype._stateBeforeCdata6 = function(c){
	if(c === "["){
		this._state = IN_CDATA;
		this._sectionStart = this._index + 1;
	} else {
		this._state = IN_DECLARATION;
		this._index--;
	}
};

Tokenizer.prototype._stateInCdata = function(c){
	if(c === "]") this._state = AFTER_CDATA_1;
};

Tokenizer.prototype._stateAfterCdata1 = characterState("]", AFTER_CDATA_2);

Tokenizer.prototype._stateAfterCdata2 = function(c){
	if(c === ">"){
		//remove 2 trailing chars
		this._cbs.oncdata(this._buffer.substring(this._sectionStart, this._index - 2));
		this._state = TEXT;
		this._sectionStart = this._index + 1;
	} else if(c !== "]") {
		this._state = IN_CDATA;
	}
	//else: stay in AFTER_CDATA_2 (`]]]>`)
};

Tokenizer.prototype._stateBeforeSpecial = function(c){
	if(c === "c" || c === "C"){
		this._state = BEFORE_SCRIPT_1;
	} else if(c === "t" || c === "T"){
		this._state = BEFORE_STYLE_1;
	} else {
		this._state = IN_TAG_NAME;
		this._index--; //consume the token again
	}
};

Tokenizer.prototype._stateBeforeSpecialEnd = function(c){
	if(this._special === SPECIAL_SCRIPT && (c === "c" || c === "C")){
		this._state = AFTER_SCRIPT_1;
	} else if(this._special === SPECIAL_STYLE && (c === "t" || c === "T")){
		this._state = AFTER_STYLE_1;
	}
	else this._state = TEXT;
};

Tokenizer.prototype._stateBeforeScript1 = consumeSpecialNameChar("R", BEFORE_SCRIPT_2);
Tokenizer.prototype._stateBeforeScript2 = consumeSpecialNameChar("I", BEFORE_SCRIPT_3);
Tokenizer.prototype._stateBeforeScript3 = consumeSpecialNameChar("P", BEFORE_SCRIPT_4);
Tokenizer.prototype._stateBeforeScript4 = consumeSpecialNameChar("T", BEFORE_SCRIPT_5);

Tokenizer.prototype._stateBeforeScript5 = function(c){
	if(c === "/" || c === ">" || whitespace(c)){
		this._special = SPECIAL_SCRIPT;
	}
	this._state = IN_TAG_NAME;
	this._index--; //consume the token again
};

Tokenizer.prototype._stateAfterScript1 = ifElseState("R", AFTER_SCRIPT_2, TEXT);
Tokenizer.prototype._stateAfterScript2 = ifElseState("I", AFTER_SCRIPT_3, TEXT);
Tokenizer.prototype._stateAfterScript3 = ifElseState("P", AFTER_SCRIPT_4, TEXT);
Tokenizer.prototype._stateAfterScript4 = ifElseState("T", AFTER_SCRIPT_5, TEXT);

Tokenizer.prototype._stateAfterScript5 = function(c){
	if(c === ">" || whitespace(c)){
		this._special = SPECIAL_NONE;
		this._state = IN_CLOSING_TAG_NAME;
		this._sectionStart = this._index - 6;
		this._index--; //reconsume the token
	}
	else this._state = TEXT;
};

Tokenizer.prototype._stateBeforeStyle1 = consumeSpecialNameChar("Y", BEFORE_STYLE_2);
Tokenizer.prototype._stateBeforeStyle2 = consumeSpecialNameChar("L", BEFORE_STYLE_3);
Tokenizer.prototype._stateBeforeStyle3 = consumeSpecialNameChar("E", BEFORE_STYLE_4);

Tokenizer.prototype._stateBeforeStyle4 = function(c){
	if(c === "/" || c === ">" || whitespace(c)){
		this._special = SPECIAL_STYLE;
	}
	this._state = IN_TAG_NAME;
	this._index--; //consume the token again
};

Tokenizer.prototype._stateAfterStyle1 = ifElseState("Y", AFTER_STYLE_2, TEXT);
Tokenizer.prototype._stateAfterStyle2 = ifElseState("L", AFTER_STYLE_3, TEXT);
Tokenizer.prototype._stateAfterStyle3 = ifElseState("E", AFTER_STYLE_4, TEXT);

Tokenizer.prototype._stateAfterStyle4 = function(c){
	if(c === ">" || whitespace(c)){
		this._special = SPECIAL_NONE;
		this._state = IN_CLOSING_TAG_NAME;
		this._sectionStart = this._index - 5;
		this._index--; //reconsume the token
	}
	else this._state = TEXT;
};

Tokenizer.prototype._stateBeforeEntity = ifElseState("#", BEFORE_NUMERIC_ENTITY, IN_NAMED_ENTITY);
Tokenizer.prototype._stateBeforeNumericEntity = ifElseState("X", IN_HEX_ENTITY, IN_NUMERIC_ENTITY);

//for entities terminated with a semicolon
Tokenizer.prototype._parseNamedEntityStrict = function(){
	//offset = 1
	if(this._sectionStart + 1 < this._index){
		var entity = this._buffer.substring(this._sectionStart + 1, this._index),
		    map = this._xmlMode ? xmlMap : entityMap;

		if(map.hasOwnProperty(entity)){
			this._emitPartial(map[entity]);
			this._sectionStart = this._index + 1;
		}
	}
};


//parses legacy entities (without trailing semicolon)
Tokenizer.prototype._parseLegacyEntity = function(){
	var start = this._sectionStart + 1,
	    limit = this._index - start;

	if(limit > 6) limit = 6; //the max length of legacy entities is 6

	while(limit >= 2){ //the min length of legacy entities is 2
		var entity = this._buffer.substr(start, limit);

		if(legacyMap.hasOwnProperty(entity)){
			this._emitPartial(legacyMap[entity]);
			this._sectionStart += limit + 1;
			return;
		} else {
			limit--;
		}
	}
};

Tokenizer.prototype._stateInNamedEntity = function(c){
	if(c === ";"){
		this._parseNamedEntityStrict();
		if(this._sectionStart + 1 < this._index && !this._xmlMode){
			this._parseLegacyEntity();
		}
		this._state = this._baseState;
	} else if((c < "a" || c > "z") && (c < "A" || c > "Z") && (c < "0" || c > "9")){
		if(this._xmlMode);
		else if(this._sectionStart + 1 === this._index);
		else if(this._baseState !== TEXT){
			if(c !== "="){
				this._parseNamedEntityStrict();
			}
		} else {
			this._parseLegacyEntity();
		}

		this._state = this._baseState;
		this._index--;
	}
};

Tokenizer.prototype._decodeNumericEntity = function(offset, base){
	var sectionStart = this._sectionStart + offset;

	if(sectionStart !== this._index){
		//parse entity
		var entity = this._buffer.substring(sectionStart, this._index);
		var parsed = parseInt(entity, base);

		this._emitPartial(decodeCodePoint(parsed));
		this._sectionStart = this._index;
	} else {
		this._sectionStart--;
	}

	this._state = this._baseState;
};

Tokenizer.prototype._stateInNumericEntity = function(c){
	if(c === ";"){
		this._decodeNumericEntity(2, 10);
		this._sectionStart++;
	} else if(c < "0" || c > "9"){
		if(!this._xmlMode){
			this._decodeNumericEntity(2, 10);
		} else {
			this._state = this._baseState;
		}
		this._index--;
	}
};

Tokenizer.prototype._stateInHexEntity = function(c){
	if(c === ";"){
		this._decodeNumericEntity(3, 16);
		this._sectionStart++;
	} else if((c < "a" || c > "f") && (c < "A" || c > "F") && (c < "0" || c > "9")){
		if(!this._xmlMode){
			this._decodeNumericEntity(3, 16);
		} else {
			this._state = this._baseState;
		}
		this._index--;
	}
};

Tokenizer.prototype._cleanup = function (){
	if(this._sectionStart < 0){
		this._buffer = "";
		this._index = 0;
		this._bufferOffset += this._index;
	} else if(this._running){
		if(this._state === TEXT){
			if(this._sectionStart !== this._index){
				this._cbs.ontext(this._buffer.substr(this._sectionStart));
			}
			this._buffer = "";
			this._index = 0;
			this._bufferOffset += this._index;
		} else if(this._sectionStart === this._index){
			//the section just started
			this._buffer = "";
			this._index = 0;
			this._bufferOffset += this._index;
		} else {
			//remove everything unnecessary
			this._buffer = this._buffer.substr(this._sectionStart);
			this._index -= this._sectionStart;
			this._bufferOffset += this._sectionStart;
		}

		this._sectionStart = 0;
	}
};

//TODO make events conditional
Tokenizer.prototype.write = function(chunk){
	if(this._ended) this._cbs.onerror(Error(".write() after done!"));

	this._buffer += chunk;
	this._parse();
};

Tokenizer.prototype._parse = function(){
	while(this._index < this._buffer.length && this._running){
		var c = this._buffer.charAt(this._index);
		if(this._state === TEXT) {
			this._stateText(c);
		} else if(this._state === BEFORE_TAG_NAME){
			this._stateBeforeTagName(c);
		} else if(this._state === IN_TAG_NAME) {
			this._stateInTagName(c);
		} else if(this._state === BEFORE_CLOSING_TAG_NAME){
			this._stateBeforeCloseingTagName(c);
		} else if(this._state === IN_CLOSING_TAG_NAME){
			this._stateInCloseingTagName(c);
		} else if(this._state === AFTER_CLOSING_TAG_NAME){
			this._stateAfterCloseingTagName(c);
		} else if(this._state === IN_SELF_CLOSING_TAG){
			this._stateInSelfClosingTag(c);
		}

		/*
		*	attributes
		*/
		else if(this._state === BEFORE_ATTRIBUTE_NAME){
			this._stateBeforeAttributeName(c);
		} else if(this._state === IN_ATTRIBUTE_NAME){
			this._stateInAttributeName(c);
		} else if(this._state === AFTER_ATTRIBUTE_NAME){
			this._stateAfterAttributeName(c);
		} else if(this._state === BEFORE_ATTRIBUTE_VALUE){
			this._stateBeforeAttributeValue(c);
		} else if(this._state === IN_ATTRIBUTE_VALUE_DQ){
			this._stateInAttributeValueDoubleQuotes(c);
		} else if(this._state === IN_ATTRIBUTE_VALUE_SQ){
			this._stateInAttributeValueSingleQuotes(c);
		} else if(this._state === IN_ATTRIBUTE_VALUE_NQ){
			this._stateInAttributeValueNoQuotes(c);
		}

		/*
		*	declarations
		*/
		else if(this._state === BEFORE_DECLARATION){
			this._stateBeforeDeclaration(c);
		} else if(this._state === IN_DECLARATION){
			this._stateInDeclaration(c);
		}

		/*
		*	processing instructions
		*/
		else if(this._state === IN_PROCESSING_INSTRUCTION){
			this._stateInProcessingInstruction(c);
		}

		/*
		*	comments
		*/
		else if(this._state === BEFORE_COMMENT){
			this._stateBeforeComment(c);
		} else if(this._state === IN_COMMENT){
			this._stateInComment(c);
		} else if(this._state === AFTER_COMMENT_1){
			this._stateAfterComment1(c);
		} else if(this._state === AFTER_COMMENT_2){
			this._stateAfterComment2(c);
		}

		/*
		*	cdata
		*/
		else if(this._state === BEFORE_CDATA_1){
			this._stateBeforeCdata1(c);
		} else if(this._state === BEFORE_CDATA_2){
			this._stateBeforeCdata2(c);
		} else if(this._state === BEFORE_CDATA_3){
			this._stateBeforeCdata3(c);
		} else if(this._state === BEFORE_CDATA_4){
			this._stateBeforeCdata4(c);
		} else if(this._state === BEFORE_CDATA_5){
			this._stateBeforeCdata5(c);
		} else if(this._state === BEFORE_CDATA_6){
			this._stateBeforeCdata6(c);
		} else if(this._state === IN_CDATA){
			this._stateInCdata(c);
		} else if(this._state === AFTER_CDATA_1){
			this._stateAfterCdata1(c);
		} else if(this._state === AFTER_CDATA_2){
			this._stateAfterCdata2(c);
		}

		/*
		* special tags
		*/
		else if(this._state === BEFORE_SPECIAL){
			this._stateBeforeSpecial(c);
		} else if(this._state === BEFORE_SPECIAL_END){
			this._stateBeforeSpecialEnd(c);
		}

		/*
		* script
		*/
		else if(this._state === BEFORE_SCRIPT_1){
			this._stateBeforeScript1(c);
		} else if(this._state === BEFORE_SCRIPT_2){
			this._stateBeforeScript2(c);
		} else if(this._state === BEFORE_SCRIPT_3){
			this._stateBeforeScript3(c);
		} else if(this._state === BEFORE_SCRIPT_4){
			this._stateBeforeScript4(c);
		} else if(this._state === BEFORE_SCRIPT_5){
			this._stateBeforeScript5(c);
		}

		else if(this._state === AFTER_SCRIPT_1){
			this._stateAfterScript1(c);
		} else if(this._state === AFTER_SCRIPT_2){
			this._stateAfterScript2(c);
		} else if(this._state === AFTER_SCRIPT_3){
			this._stateAfterScript3(c);
		} else if(this._state === AFTER_SCRIPT_4){
			this._stateAfterScript4(c);
		} else if(this._state === AFTER_SCRIPT_5){
			this._stateAfterScript5(c);
		}

		/*
		* style
		*/
		else if(this._state === BEFORE_STYLE_1){
			this._stateBeforeStyle1(c);
		} else if(this._state === BEFORE_STYLE_2){
			this._stateBeforeStyle2(c);
		} else if(this._state === BEFORE_STYLE_3){
			this._stateBeforeStyle3(c);
		} else if(this._state === BEFORE_STYLE_4){
			this._stateBeforeStyle4(c);
		}

		else if(this._state === AFTER_STYLE_1){
			this._stateAfterStyle1(c);
		} else if(this._state === AFTER_STYLE_2){
			this._stateAfterStyle2(c);
		} else if(this._state === AFTER_STYLE_3){
			this._stateAfterStyle3(c);
		} else if(this._state === AFTER_STYLE_4){
			this._stateAfterStyle4(c);
		}

		/*
		* entities
		*/
		else if(this._state === BEFORE_ENTITY){
			this._stateBeforeEntity(c);
		} else if(this._state === BEFORE_NUMERIC_ENTITY){
			this._stateBeforeNumericEntity(c);
		} else if(this._state === IN_NAMED_ENTITY){
			this._stateInNamedEntity(c);
		} else if(this._state === IN_NUMERIC_ENTITY){
			this._stateInNumericEntity(c);
		} else if(this._state === IN_HEX_ENTITY){
			this._stateInHexEntity(c);
		}

		else {
			this._cbs.onerror(Error("unknown _state"), this._state);
		}

		this._index++;
	}

	this._cleanup();
};

Tokenizer.prototype.pause = function(){
	this._running = false;
};
Tokenizer.prototype.resume = function(){
	this._running = true;

	if(this._index < this._buffer.length){
		this._parse();
	}
	if(this._ended){
		this._finish();
	}
};

Tokenizer.prototype.end = function(chunk){
	if(this._ended) this._cbs.onerror(Error(".end() after done!"));
	if(chunk) this.write(chunk);

	this._ended = true;

	if(this._running) this._finish();
};

Tokenizer.prototype._finish = function(){
	//if there is remaining data, emit it in a reasonable way
	if(this._sectionStart < this._index){
		this._handleTrailingData();
	}

	this._cbs.onend();
};

Tokenizer.prototype._handleTrailingData = function(){
	var data = this._buffer.substr(this._sectionStart);

	if(this._state === IN_CDATA || this._state === AFTER_CDATA_1 || this._state === AFTER_CDATA_2){
		this._cbs.oncdata(data);
	} else if(this._state === IN_COMMENT || this._state === AFTER_COMMENT_1 || this._state === AFTER_COMMENT_2){
		this._cbs.oncomment(data);
	} else if(this._state === IN_NAMED_ENTITY && !this._xmlMode){
		this._parseLegacyEntity();
		if(this._sectionStart < this._index){
			this._state = this._baseState;
			this._handleTrailingData();
		}
	} else if(this._state === IN_NUMERIC_ENTITY && !this._xmlMode){
		this._decodeNumericEntity(2, 10);
		if(this._sectionStart < this._index){
			this._state = this._baseState;
			this._handleTrailingData();
		}
	} else if(this._state === IN_HEX_ENTITY && !this._xmlMode){
		this._decodeNumericEntity(3, 16);
		if(this._sectionStart < this._index){
			this._state = this._baseState;
			this._handleTrailingData();
		}
	} else if(
		this._state !== IN_TAG_NAME &&
		this._state !== BEFORE_ATTRIBUTE_NAME &&
		this._state !== BEFORE_ATTRIBUTE_VALUE &&
		this._state !== AFTER_ATTRIBUTE_NAME &&
		this._state !== IN_ATTRIBUTE_NAME &&
		this._state !== IN_ATTRIBUTE_VALUE_SQ &&
		this._state !== IN_ATTRIBUTE_VALUE_DQ &&
		this._state !== IN_ATTRIBUTE_VALUE_NQ &&
		this._state !== IN_CLOSING_TAG_NAME
	){
		this._cbs.ontext(data);
	}
	//else, ignore remaining data
	//TODO add a way to remove current tag
};

Tokenizer.prototype.reset = function(){
	Tokenizer.call(this, {xmlMode: this._xmlMode, decodeEntities: this._decodeEntities}, this._cbs);
};

Tokenizer.prototype.getAbsoluteIndex = function(){
	return this._bufferOffset + this._index;
};

Tokenizer.prototype._getSection = function(){
	return this._buffer.substring(this._sectionStart, this._index);
};

Tokenizer.prototype._emitToken = function(name){
	this._cbs[name](this._getSection());
	this._sectionStart = -1;
};

Tokenizer.prototype._emitPartial = function(value){
	if(this._baseState !== TEXT){
		this._cbs.onattribdata(value); //TODO implement the new event
	} else {
		this._cbs.ontext(value);
	}
};

},{"entities/lib/decode_codepoint.js":56,"entities/maps/entities.json":58,"entities/maps/legacy.json":59,"entities/maps/xml.json":60}],43:[function(require,module,exports){
module.exports = Stream;

var Parser = require("./Parser.js"),
    WritableStream = require("stream").Writable || require("readable-stream").Writable;

function Stream(cbs, options){
	var parser = this._parser = new Parser(cbs, options);

	WritableStream.call(this, {decodeStrings: false});

	this.once("finish", function(){
		parser.end();
	});
}

require("util").inherits(Stream, WritableStream);

WritableStream.prototype._write = function(chunk, encoding, cb){
	this._parser.write(chunk);
	cb();
};
},{"./Parser.js":39,"readable-stream":82,"stream":103,"util":106}],44:[function(require,module,exports){
var Parser = require("./Parser.js"),
    DomHandler = require("domhandler");

function defineProp(name, value){
	delete module.exports[name];
	module.exports[name] = value;
	return value;
}

module.exports = {
	Parser: Parser,
	Tokenizer: require("./Tokenizer.js"),
	ElementType: require("domelementtype"),
	DomHandler: DomHandler,
	get FeedHandler(){
		return defineProp("FeedHandler", require("./FeedHandler.js"));
	},
	get Stream(){
		return defineProp("Stream", require("./Stream.js"));
	},
	get WritableStream(){
		return defineProp("WritableStream", require("./WritableStream.js"));
	},
	get ProxyHandler(){
		return defineProp("ProxyHandler", require("./ProxyHandler.js"));
	},
	get DomUtils(){
		return defineProp("DomUtils", require("domutils"));
	},
	get CollectingHandler(){
		return defineProp("CollectingHandler", require("./CollectingHandler.js"));
	},
	// For legacy support
	DefaultHandler: DomHandler,
	get RssHandler(){
		return defineProp("RssHandler", this.FeedHandler);
	},
	//helper methods
	parseDOM: function(data, options){
		var handler = new DomHandler(options);
		new Parser(handler, options).end(data);
		return handler.dom;
	},
	parseFeed: function(feed, options){
		var handler = new module.exports.FeedHandler(options);
		new Parser(handler, options).end(feed);
		return handler.dom;
	},
	createDomStream: function(cb, options, elementCb){
		var handler = new DomHandler(cb, options, elementCb);
		return new Parser(handler, options);
	},
	// List of all events that the parser emits
	EVENTS: { /* Format: eventname: number of arguments */
		attribute: 2,
		cdatastart: 0,
		cdataend: 0,
		text: 1,
		processinginstruction: 2,
		comment: 1,
		commentend: 0,
		closetag: 1,
		opentag: 2,
		opentagname: 1,
		error: 1,
		end: 0
	}
};

},{"./CollectingHandler.js":37,"./FeedHandler.js":38,"./Parser.js":39,"./ProxyHandler.js":40,"./Stream.js":41,"./Tokenizer.js":42,"./WritableStream.js":43,"domelementtype":45,"domhandler":46,"domutils":49}],45:[function(require,module,exports){
arguments[4][26][0].apply(exports,arguments)
},{"dup":26}],46:[function(require,module,exports){
var ElementType = require("domelementtype");

var re_whitespace = /\s+/g;
var NodePrototype = require("./lib/node");
var ElementPrototype = require("./lib/element");

function DomHandler(callback, options, elementCB){
	if(typeof callback === "object"){
		elementCB = options;
		options = callback;
		callback = null;
	} else if(typeof options === "function"){
		elementCB = options;
		options = defaultOpts;
	}
	this._callback = callback;
	this._options = options || defaultOpts;
	this._elementCB = elementCB;
	this.dom = [];
	this._done = false;
	this._tagStack = [];
	this._parser = this._parser || null;
}

//default options
var defaultOpts = {
	normalizeWhitespace: false, //Replace all whitespace with single spaces
	withStartIndices: false, //Add startIndex properties to nodes
};

DomHandler.prototype.onparserinit = function(parser){
	this._parser = parser;
};

//Resets the handler back to starting state
DomHandler.prototype.onreset = function(){
	DomHandler.call(this, this._callback, this._options, this._elementCB);
};

//Signals the handler that parsing is done
DomHandler.prototype.onend = function(){
	if(this._done) return;
	this._done = true;
	this._parser = null;
	this._handleCallback(null);
};

DomHandler.prototype._handleCallback =
DomHandler.prototype.onerror = function(error){
	if(typeof this._callback === "function"){
		this._callback(error, this.dom);
	} else {
		if(error) throw error;
	}
};

DomHandler.prototype.onclosetag = function(){
	//if(this._tagStack.pop().name !== name) this._handleCallback(Error("Tagname didn't match!"));
	var elem = this._tagStack.pop();
	if(this._elementCB) this._elementCB(elem);
};

DomHandler.prototype._addDomElement = function(element){
	var parent = this._tagStack[this._tagStack.length - 1];
	var siblings = parent ? parent.children : this.dom;
	var previousSibling = siblings[siblings.length - 1];

	element.next = null;

	if(this._options.withStartIndices){
		element.startIndex = this._parser.startIndex;
	}

	if (this._options.withDomLvl1) {
		element.__proto__ = element.type === "tag" ? ElementPrototype : NodePrototype;
	}

	if(previousSibling){
		element.prev = previousSibling;
		previousSibling.next = element;
	} else {
		element.prev = null;
	}

	siblings.push(element);
	element.parent = parent || null;
};

DomHandler.prototype.onopentag = function(name, attribs){
	var element = {
		type: name === "script" ? ElementType.Script : name === "style" ? ElementType.Style : ElementType.Tag,
		name: name,
		attribs: attribs,
		children: []
	};

	this._addDomElement(element);

	this._tagStack.push(element);
};

DomHandler.prototype.ontext = function(data){
	//the ignoreWhitespace is officially dropped, but for now,
	//it's an alias for normalizeWhitespace
	var normalize = this._options.normalizeWhitespace || this._options.ignoreWhitespace;

	var lastTag;

	if(!this._tagStack.length && this.dom.length && (lastTag = this.dom[this.dom.length-1]).type === ElementType.Text){
		if(normalize){
			lastTag.data = (lastTag.data + data).replace(re_whitespace, " ");
		} else {
			lastTag.data += data;
		}
	} else {
		if(
			this._tagStack.length &&
			(lastTag = this._tagStack[this._tagStack.length - 1]) &&
			(lastTag = lastTag.children[lastTag.children.length - 1]) &&
			lastTag.type === ElementType.Text
		){
			if(normalize){
				lastTag.data = (lastTag.data + data).replace(re_whitespace, " ");
			} else {
				lastTag.data += data;
			}
		} else {
			if(normalize){
				data = data.replace(re_whitespace, " ");
			}

			this._addDomElement({
				data: data,
				type: ElementType.Text
			});
		}
	}
};

DomHandler.prototype.oncomment = function(data){
	var lastTag = this._tagStack[this._tagStack.length - 1];

	if(lastTag && lastTag.type === ElementType.Comment){
		lastTag.data += data;
		return;
	}

	var element = {
		data: data,
		type: ElementType.Comment
	};

	this._addDomElement(element);
	this._tagStack.push(element);
};

DomHandler.prototype.oncdatastart = function(){
	var element = {
		children: [{
			data: "",
			type: ElementType.Text
		}],
		type: ElementType.CDATA
	};

	this._addDomElement(element);
	this._tagStack.push(element);
};

DomHandler.prototype.oncommentend = DomHandler.prototype.oncdataend = function(){
	this._tagStack.pop();
};

DomHandler.prototype.onprocessinginstruction = function(name, data){
	this._addDomElement({
		name: name,
		data: data,
		type: ElementType.Directive
	});
};

module.exports = DomHandler;

},{"./lib/element":47,"./lib/node":48,"domelementtype":45}],47:[function(require,module,exports){
// DOM-Level-1-compliant structure
var NodePrototype = require('./node');
var ElementPrototype = module.exports = Object.create(NodePrototype);

var domLvl1 = {
	tagName: "name"
};

Object.keys(domLvl1).forEach(function(key) {
	var shorthand = domLvl1[key];
	Object.defineProperty(ElementPrototype, key, {
		get: function() {
			return this[shorthand] || null;
		},
		set: function(val) {
			this[shorthand] = val;
			return val;
		}
	});
});

},{"./node":48}],48:[function(require,module,exports){
// This object will be used as the prototype for Nodes when creating a
// DOM-Level-1-compliant structure.
var NodePrototype = module.exports = {
	get firstChild() {
		var children = this.children;
		return children && children[0] || null;
	},
	get lastChild() {
		var children = this.children;
		return children && children[children.length - 1] || null;
	},
	get nodeType() {
		return nodeTypes[this.type] || nodeTypes.element;
	}
};

var domLvl1 = {
	tagName: "name",
	childNodes: "children",
	parentNode: "parent",
	previousSibling: "prev",
	nextSibling: "next",
	nodeValue: "data"
};

var nodeTypes = {
	element: 1,
	text: 3,
	cdata: 4,
	comment: 8
};

Object.keys(domLvl1).forEach(function(key) {
	var shorthand = domLvl1[key];
	Object.defineProperty(NodePrototype, key, {
		get: function() {
			return this[shorthand] || null;
		},
		set: function(val) {
			this[shorthand] = val;
			return val;
		}
	});
});

},{}],49:[function(require,module,exports){
arguments[4][19][0].apply(exports,arguments)
},{"./lib/helpers":50,"./lib/legacy":51,"./lib/manipulation":52,"./lib/querying":53,"./lib/stringify":54,"./lib/traversal":55,"dup":19}],50:[function(require,module,exports){
// removeSubsets
// Given an array of nodes, remove any member that is contained by another.
exports.removeSubsets = function(nodes) {
	var idx = nodes.length, node, ancestor, replace;

	// Check if each node (or one of its ancestors) is already contained in the
	// array.
	while (--idx > -1) {
		node = ancestor = nodes[idx];

		// Temporarily remove the node under consideration
		nodes[idx] = null;
		replace = true;

		while (ancestor) {
			if (nodes.indexOf(ancestor) > -1) {
				replace = false;
				nodes.splice(idx, 1);
				break;
			}
			ancestor = ancestor.parent;
		}

		// If the node has been found to be unique, re-insert it.
		if (replace) {
			nodes[idx] = node;
		}
	}

	return nodes;
};

// Source: http://dom.spec.whatwg.org/#dom-node-comparedocumentposition
var POSITION = {
	DISCONNECTED: 1,
	PRECEDING: 2,
	FOLLOWING: 4,
	CONTAINS: 8,
	CONTAINED_BY: 16
};

// Compare the position of one node against another node in any other document.
// The return value is a bitmask with the following values:
//
// document order:
// > There is an ordering, document order, defined on all the nodes in the
// > document corresponding to the order in which the first character of the
// > XML representation of each node occurs in the XML representation of the
// > document after expansion of general entities. Thus, the document element
// > node will be the first node. Element nodes occur before their children.
// > Thus, document order orders element nodes in order of the occurrence of
// > their start-tag in the XML (after expansion of entities). The attribute
// > nodes of an element occur after the element and before its children. The
// > relative order of attribute nodes is implementation-dependent./
// Source:
// http://www.w3.org/TR/DOM-Level-3-Core/glossary.html#dt-document-order
//
// @argument {Node} nodaA The first node to use in the comparison
// @argument {Node} nodeB The second node to use in the comparison
//
// @return {Number} A bitmask describing the input nodes' relative position.
//         See http://dom.spec.whatwg.org/#dom-node-comparedocumentposition for
//         a description of these values.
var comparePos = exports.compareDocumentPosition = function(nodeA, nodeB) {
	var aParents = [];
	var bParents = [];
	var current, sharedParent, siblings, aSibling, bSibling, idx;

	if (nodeA === nodeB) {
		return 0;
	}

	current = nodeA;
	while (current) {
		aParents.unshift(current);
		current = current.parent;
	}
	current = nodeB;
	while (current) {
		bParents.unshift(current);
		current = current.parent;
	}

	idx = 0;
	while (aParents[idx] === bParents[idx]) {
		idx++;
	}

	if (idx === 0) {
		return POSITION.DISCONNECTED;
	}

	sharedParent = aParents[idx - 1];
	siblings = sharedParent.children;
	aSibling = aParents[idx];
	bSibling = bParents[idx];

	if (siblings.indexOf(aSibling) > siblings.indexOf(bSibling)) {
		if (sharedParent === nodeB) {
			return POSITION.FOLLOWING | POSITION.CONTAINED_BY;
		}
		return POSITION.FOLLOWING;
	} else {
		if (sharedParent === nodeA) {
			return POSITION.PRECEDING | POSITION.CONTAINS;
		}
		return POSITION.PRECEDING;
	}
};

// Sort an array of nodes based on their relative position in the document and
// remove any duplicate nodes. If the array contains nodes that do not belong
// to the same document, sort order is unspecified.
//
// @argument {Array} nodes Array of DOM nodes
//
// @returns {Array} collection of unique nodes, sorted in document order
exports.uniqueSort = function(nodes) {
	var idx = nodes.length, node, position;

	nodes = nodes.slice();

	while (--idx > -1) {
		node = nodes[idx];
		position = nodes.indexOf(node);
		if (position > -1 && position < idx) {
			nodes.splice(idx, 1);
		}
	}
	nodes.sort(function(a, b) {
		var relative = comparePos(a, b);
		if (relative & POSITION.PRECEDING) {
			return -1;
		} else if (relative & POSITION.FOLLOWING) {
			return 1;
		}
		return 0;
	});

	return nodes;
};

},{}],51:[function(require,module,exports){
arguments[4][21][0].apply(exports,arguments)
},{"domelementtype":45,"dup":21}],52:[function(require,module,exports){
arguments[4][22][0].apply(exports,arguments)
},{"dup":22}],53:[function(require,module,exports){
arguments[4][23][0].apply(exports,arguments)
},{"domelementtype":45,"dup":23}],54:[function(require,module,exports){
arguments[4][24][0].apply(exports,arguments)
},{"domelementtype":45,"dup":24}],55:[function(require,module,exports){
arguments[4][25][0].apply(exports,arguments)
},{"dup":25}],56:[function(require,module,exports){
arguments[4][31][0].apply(exports,arguments)
},{"../maps/decode.json":57,"dup":31}],57:[function(require,module,exports){
arguments[4][33][0].apply(exports,arguments)
},{"dup":33}],58:[function(require,module,exports){
arguments[4][34][0].apply(exports,arguments)
},{"dup":34}],59:[function(require,module,exports){
arguments[4][35][0].apply(exports,arguments)
},{"dup":35}],60:[function(require,module,exports){
arguments[4][36][0].apply(exports,arguments)
},{"dup":36}],61:[function(require,module,exports){
(function (global){
/**
 * @license
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modern -o ./dist/lodash.js`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
;(function() {

  /** Used as a safe reference for `undefined` in pre ES5 environments */
  var undefined;

  /** Used to pool arrays and objects used internally */
  var arrayPool = [],
      objectPool = [];

  /** Used to generate unique IDs */
  var idCounter = 0;

  /** Used to prefix keys to avoid issues with `__proto__` and properties on `Object.prototype` */
  var keyPrefix = +new Date + '';

  /** Used as the size when optimizations are enabled for large arrays */
  var largeArraySize = 75;

  /** Used as the max size of the `arrayPool` and `objectPool` */
  var maxPoolSize = 40;

  /** Used to detect and test whitespace */
  var whitespace = (
    // whitespace
    ' \t\x0B\f\xA0\ufeff' +

    // line terminators
    '\n\r\u2028\u2029' +

    // unicode category "Zs" space separators
    '\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000'
  );

  /** Used to match empty string literals in compiled template source */
  var reEmptyStringLeading = /\b__p \+= '';/g,
      reEmptyStringMiddle = /\b(__p \+=) '' \+/g,
      reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g;

  /**
   * Used to match ES6 template delimiters
   * http://people.mozilla.org/~jorendorff/es6-draft.html#sec-literals-string-literals
   */
  var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g;

  /** Used to match regexp flags from their coerced string values */
  var reFlags = /\w*$/;

  /** Used to detected named functions */
  var reFuncName = /^\s*function[ \n\r\t]+\w/;

  /** Used to match "interpolate" template delimiters */
  var reInterpolate = /<%=([\s\S]+?)%>/g;

  /** Used to match leading whitespace and zeros to be removed */
  var reLeadingSpacesAndZeros = RegExp('^[' + whitespace + ']*0+(?=.$)');

  /** Used to ensure capturing order of template delimiters */
  var reNoMatch = /($^)/;

  /** Used to detect functions containing a `this` reference */
  var reThis = /\bthis\b/;

  /** Used to match unescaped characters in compiled string literals */
  var reUnescapedString = /['\n\r\t\u2028\u2029\\]/g;

  /** Used to assign default `context` object properties */
  var contextProps = [
    'Array', 'Boolean', 'Date', 'Function', 'Math', 'Number', 'Object',
    'RegExp', 'String', '_', 'attachEvent', 'clearTimeout', 'isFinite', 'isNaN',
    'parseInt', 'setTimeout'
  ];

  /** Used to make template sourceURLs easier to identify */
  var templateCounter = 0;

  /** `Object#toString` result shortcuts */
  var argsClass = '[object Arguments]',
      arrayClass = '[object Array]',
      boolClass = '[object Boolean]',
      dateClass = '[object Date]',
      funcClass = '[object Function]',
      numberClass = '[object Number]',
      objectClass = '[object Object]',
      regexpClass = '[object RegExp]',
      stringClass = '[object String]';

  /** Used to identify object classifications that `_.clone` supports */
  var cloneableClasses = {};
  cloneableClasses[funcClass] = false;
  cloneableClasses[argsClass] = cloneableClasses[arrayClass] =
  cloneableClasses[boolClass] = cloneableClasses[dateClass] =
  cloneableClasses[numberClass] = cloneableClasses[objectClass] =
  cloneableClasses[regexpClass] = cloneableClasses[stringClass] = true;

  /** Used as an internal `_.debounce` options object */
  var debounceOptions = {
    'leading': false,
    'maxWait': 0,
    'trailing': false
  };

  /** Used as the property descriptor for `__bindData__` */
  var descriptor = {
    'configurable': false,
    'enumerable': false,
    'value': null,
    'writable': false
  };

  /** Used to determine if values are of the language type Object */
  var objectTypes = {
    'boolean': false,
    'function': true,
    'object': true,
    'number': false,
    'string': false,
    'undefined': false
  };

  /** Used to escape characters for inclusion in compiled string literals */
  var stringEscapes = {
    '\\': '\\',
    "'": "'",
    '\n': 'n',
    '\r': 'r',
    '\t': 't',
    '\u2028': 'u2028',
    '\u2029': 'u2029'
  };

  /** Used as a reference to the global object */
  var root = (objectTypes[typeof window] && window) || this;

  /** Detect free variable `exports` */
  var freeExports = objectTypes[typeof exports] && exports && !exports.nodeType && exports;

  /** Detect free variable `module` */
  var freeModule = objectTypes[typeof module] && module && !module.nodeType && module;

  /** Detect the popular CommonJS extension `module.exports` */
  var moduleExports = freeModule && freeModule.exports === freeExports && freeExports;

  /** Detect free variable `global` from Node.js or Browserified code and use it as `root` */
  var freeGlobal = objectTypes[typeof global] && global;
  if (freeGlobal && (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal)) {
    root = freeGlobal;
  }

  /*--------------------------------------------------------------------------*/

  /**
   * The base implementation of `_.indexOf` without support for binary searches
   * or `fromIndex` constraints.
   *
   * @private
   * @param {Array} array The array to search.
   * @param {*} value The value to search for.
   * @param {number} [fromIndex=0] The index to search from.
   * @returns {number} Returns the index of the matched value or `-1`.
   */
  function baseIndexOf(array, value, fromIndex) {
    var index = (fromIndex || 0) - 1,
        length = array ? array.length : 0;

    while (++index < length) {
      if (array[index] === value) {
        return index;
      }
    }
    return -1;
  }

  /**
   * An implementation of `_.contains` for cache objects that mimics the return
   * signature of `_.indexOf` by returning `0` if the value is found, else `-1`.
   *
   * @private
   * @param {Object} cache The cache object to inspect.
   * @param {*} value The value to search for.
   * @returns {number} Returns `0` if `value` is found, else `-1`.
   */
  function cacheIndexOf(cache, value) {
    var type = typeof value;
    cache = cache.cache;

    if (type == 'boolean' || value == null) {
      return cache[value] ? 0 : -1;
    }
    if (type != 'number' && type != 'string') {
      type = 'object';
    }
    var key = type == 'number' ? value : keyPrefix + value;
    cache = (cache = cache[type]) && cache[key];

    return type == 'object'
      ? (cache && baseIndexOf(cache, value) > -1 ? 0 : -1)
      : (cache ? 0 : -1);
  }

  /**
   * Adds a given value to the corresponding cache object.
   *
   * @private
   * @param {*} value The value to add to the cache.
   */
  function cachePush(value) {
    var cache = this.cache,
        type = typeof value;

    if (type == 'boolean' || value == null) {
      cache[value] = true;
    } else {
      if (type != 'number' && type != 'string') {
        type = 'object';
      }
      var key = type == 'number' ? value : keyPrefix + value,
          typeCache = cache[type] || (cache[type] = {});

      if (type == 'object') {
        (typeCache[key] || (typeCache[key] = [])).push(value);
      } else {
        typeCache[key] = true;
      }
    }
  }

  /**
   * Used by `_.max` and `_.min` as the default callback when a given
   * collection is a string value.
   *
   * @private
   * @param {string} value The character to inspect.
   * @returns {number} Returns the code unit of given character.
   */
  function charAtCallback(value) {
    return value.charCodeAt(0);
  }

  /**
   * Used by `sortBy` to compare transformed `collection` elements, stable sorting
   * them in ascending order.
   *
   * @private
   * @param {Object} a The object to compare to `b`.
   * @param {Object} b The object to compare to `a`.
   * @returns {number} Returns the sort order indicator of `1` or `-1`.
   */
  function compareAscending(a, b) {
    var ac = a.criteria,
        bc = b.criteria,
        index = -1,
        length = ac.length;

    while (++index < length) {
      var value = ac[index],
          other = bc[index];

      if (value !== other) {
        if (value > other || typeof value == 'undefined') {
          return 1;
        }
        if (value < other || typeof other == 'undefined') {
          return -1;
        }
      }
    }
    // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications
    // that causes it, under certain circumstances, to return the same value for
    // `a` and `b`. See https://github.com/jashkenas/underscore/pull/1247
    //
    // This also ensures a stable sort in V8 and other engines.
    // See http://code.google.com/p/v8/issues/detail?id=90
    return a.index - b.index;
  }

  /**
   * Creates a cache object to optimize linear searches of large arrays.
   *
   * @private
   * @param {Array} [array=[]] The array to search.
   * @returns {null|Object} Returns the cache object or `null` if caching should not be used.
   */
  function createCache(array) {
    var index = -1,
        length = array.length,
        first = array[0],
        mid = array[(length / 2) | 0],
        last = array[length - 1];

    if (first && typeof first == 'object' &&
        mid && typeof mid == 'object' && last && typeof last == 'object') {
      return false;
    }
    var cache = getObject();
    cache['false'] = cache['null'] = cache['true'] = cache['undefined'] = false;

    var result = getObject();
    result.array = array;
    result.cache = cache;
    result.push = cachePush;

    while (++index < length) {
      result.push(array[index]);
    }
    return result;
  }

  /**
   * Used by `template` to escape characters for inclusion in compiled
   * string literals.
   *
   * @private
   * @param {string} match The matched character to escape.
   * @returns {string} Returns the escaped character.
   */
  function escapeStringChar(match) {
    return '\\' + stringEscapes[match];
  }

  /**
   * Gets an array from the array pool or creates a new one if the pool is empty.
   *
   * @private
   * @returns {Array} The array from the pool.
   */
  function getArray() {
    return arrayPool.pop() || [];
  }

  /**
   * Gets an object from the object pool or creates a new one if the pool is empty.
   *
   * @private
   * @returns {Object} The object from the pool.
   */
  function getObject() {
    return objectPool.pop() || {
      'array': null,
      'cache': null,
      'criteria': null,
      'false': false,
      'index': 0,
      'null': false,
      'number': null,
      'object': null,
      'push': null,
      'string': null,
      'true': false,
      'undefined': false,
      'value': null
    };
  }

  /**
   * Releases the given array back to the array pool.
   *
   * @private
   * @param {Array} [array] The array to release.
   */
  function releaseArray(array) {
    array.length = 0;
    if (arrayPool.length < maxPoolSize) {
      arrayPool.push(array);
    }
  }

  /**
   * Releases the given object back to the object pool.
   *
   * @private
   * @param {Object} [object] The object to release.
   */
  function releaseObject(object) {
    var cache = object.cache;
    if (cache) {
      releaseObject(cache);
    }
    object.array = object.cache = object.criteria = object.object = object.number = object.string = object.value = null;
    if (objectPool.length < maxPoolSize) {
      objectPool.push(object);
    }
  }

  /**
   * Slices the `collection` from the `start` index up to, but not including,
   * the `end` index.
   *
   * Note: This function is used instead of `Array#slice` to support node lists
   * in IE < 9 and to ensure dense arrays are returned.
   *
   * @private
   * @param {Array|Object|string} collection The collection to slice.
   * @param {number} start The start index.
   * @param {number} end The end index.
   * @returns {Array} Returns the new array.
   */
  function slice(array, start, end) {
    start || (start = 0);
    if (typeof end == 'undefined') {
      end = array ? array.length : 0;
    }
    var index = -1,
        length = end - start || 0,
        result = Array(length < 0 ? 0 : length);

    while (++index < length) {
      result[index] = array[start + index];
    }
    return result;
  }

  /*--------------------------------------------------------------------------*/

  /**
   * Create a new `lodash` function using the given context object.
   *
   * @static
   * @memberOf _
   * @category Utilities
   * @param {Object} [context=root] The context object.
   * @returns {Function} Returns the `lodash` function.
   */
  function runInContext(context) {
    // Avoid issues with some ES3 environments that attempt to use values, named
    // after built-in constructors like `Object`, for the creation of literals.
    // ES5 clears this up by stating that literals must use built-in constructors.
    // See http://es5.github.io/#x11.1.5.
    context = context ? _.defaults(root.Object(), context, _.pick(root, contextProps)) : root;

    /** Native constructor references */
    var Array = context.Array,
        Boolean = context.Boolean,
        Date = context.Date,
        Function = context.Function,
        Math = context.Math,
        Number = context.Number,
        Object = context.Object,
        RegExp = context.RegExp,
        String = context.String,
        TypeError = context.TypeError;

    /**
     * Used for `Array` method references.
     *
     * Normally `Array.prototype` would suffice, however, using an array literal
     * avoids issues in Narwhal.
     */
    var arrayRef = [];

    /** Used for native method references */
    var objectProto = Object.prototype;

    /** Used to restore the original `_` reference in `noConflict` */
    var oldDash = context._;

    /** Used to resolve the internal [[Class]] of values */
    var toString = objectProto.toString;

    /** Used to detect if a method is native */
    var reNative = RegExp('^' +
      String(toString)
        .replace(/[.*+?^${}()|[\]\\]/g, '\\$&')
        .replace(/toString| for [^\]]+/g, '.*?') + '$'
    );

    /** Native method shortcuts */
    var ceil = Math.ceil,
        clearTimeout = context.clearTimeout,
        floor = Math.floor,
        fnToString = Function.prototype.toString,
        getPrototypeOf = isNative(getPrototypeOf = Object.getPrototypeOf) && getPrototypeOf,
        hasOwnProperty = objectProto.hasOwnProperty,
        push = arrayRef.push,
        setTimeout = context.setTimeout,
        splice = arrayRef.splice,
        unshift = arrayRef.unshift;

    /** Used to set meta data on functions */
    var defineProperty = (function() {
      // IE 8 only accepts DOM elements
      try {
        var o = {},
            func = isNative(func = Object.defineProperty) && func,
            result = func(o, o, o) && func;
      } catch(e) { }
      return result;
    }());

    /* Native method shortcuts for methods with the same name as other `lodash` methods */
    var nativeCreate = isNative(nativeCreate = Object.create) && nativeCreate,
        nativeIsArray = isNative(nativeIsArray = Array.isArray) && nativeIsArray,
        nativeIsFinite = context.isFinite,
        nativeIsNaN = context.isNaN,
        nativeKeys = isNative(nativeKeys = Object.keys) && nativeKeys,
        nativeMax = Math.max,
        nativeMin = Math.min,
        nativeParseInt = context.parseInt,
        nativeRandom = Math.random;

    /** Used to lookup a built-in constructor by [[Class]] */
    var ctorByClass = {};
    ctorByClass[arrayClass] = Array;
    ctorByClass[boolClass] = Boolean;
    ctorByClass[dateClass] = Date;
    ctorByClass[funcClass] = Function;
    ctorByClass[objectClass] = Object;
    ctorByClass[numberClass] = Number;
    ctorByClass[regexpClass] = RegExp;
    ctorByClass[stringClass] = String;

    /*--------------------------------------------------------------------------*/

    /**
     * Creates a `lodash` object which wraps the given value to enable intuitive
     * method chaining.
     *
     * In addition to Lo-Dash methods, wrappers also have the following `Array` methods:
     * `concat`, `join`, `pop`, `push`, `reverse`, `shift`, `slice`, `sort`, `splice`,
     * and `unshift`
     *
     * Chaining is supported in custom builds as long as the `value` method is
     * implicitly or explicitly included in the build.
     *
     * The chainable wrapper functions are:
     * `after`, `assign`, `bind`, `bindAll`, `bindKey`, `chain`, `compact`,
     * `compose`, `concat`, `countBy`, `create`, `createCallback`, `curry`,
     * `debounce`, `defaults`, `defer`, `delay`, `difference`, `filter`, `flatten`,
     * `forEach`, `forEachRight`, `forIn`, `forInRight`, `forOwn`, `forOwnRight`,
     * `functions`, `groupBy`, `indexBy`, `initial`, `intersection`, `invert`,
     * `invoke`, `keys`, `map`, `max`, `memoize`, `merge`, `min`, `object`, `omit`,
     * `once`, `pairs`, `partial`, `partialRight`, `pick`, `pluck`, `pull`, `push`,
     * `range`, `reject`, `remove`, `rest`, `reverse`, `shuffle`, `slice`, `sort`,
     * `sortBy`, `splice`, `tap`, `throttle`, `times`, `toArray`, `transform`,
     * `union`, `uniq`, `unshift`, `unzip`, `values`, `where`, `without`, `wrap`,
     * and `zip`
     *
     * The non-chainable wrapper functions are:
     * `clone`, `cloneDeep`, `contains`, `escape`, `every`, `find`, `findIndex`,
     * `findKey`, `findLast`, `findLastIndex`, `findLastKey`, `has`, `identity`,
     * `indexOf`, `isArguments`, `isArray`, `isBoolean`, `isDate`, `isElement`,
     * `isEmpty`, `isEqual`, `isFinite`, `isFunction`, `isNaN`, `isNull`, `isNumber`,
     * `isObject`, `isPlainObject`, `isRegExp`, `isString`, `isUndefined`, `join`,
     * `lastIndexOf`, `mixin`, `noConflict`, `parseInt`, `pop`, `random`, `reduce`,
     * `reduceRight`, `result`, `shift`, `size`, `some`, `sortedIndex`, `runInContext`,
     * `template`, `unescape`, `uniqueId`, and `value`
     *
     * The wrapper functions `first` and `last` return wrapped values when `n` is
     * provided, otherwise they return unwrapped values.
     *
     * Explicit chaining can be enabled by using the `_.chain` method.
     *
     * @name _
     * @constructor
     * @category Chaining
     * @param {*} value The value to wrap in a `lodash` instance.
     * @returns {Object} Returns a `lodash` instance.
     * @example
     *
     * var wrapped = _([1, 2, 3]);
     *
     * // returns an unwrapped value
     * wrapped.reduce(function(sum, num) {
     *   return sum + num;
     * });
     * // => 6
     *
     * // returns a wrapped value
     * var squares = wrapped.map(function(num) {
     *   return num * num;
     * });
     *
     * _.isArray(squares);
     * // => false
     *
     * _.isArray(squares.value());
     * // => true
     */
    function lodash(value) {
      // don't wrap if already wrapped, even if wrapped by a different `lodash` constructor
      return (value && typeof value == 'object' && !isArray(value) && hasOwnProperty.call(value, '__wrapped__'))
       ? value
       : new lodashWrapper(value);
    }

    /**
     * A fast path for creating `lodash` wrapper objects.
     *
     * @private
     * @param {*} value The value to wrap in a `lodash` instance.
     * @param {boolean} chainAll A flag to enable chaining for all methods
     * @returns {Object} Returns a `lodash` instance.
     */
    function lodashWrapper(value, chainAll) {
      this.__chain__ = !!chainAll;
      this.__wrapped__ = value;
    }
    // ensure `new lodashWrapper` is an instance of `lodash`
    lodashWrapper.prototype = lodash.prototype;

    /**
     * An object used to flag environments features.
     *
     * @static
     * @memberOf _
     * @type Object
     */
    var support = lodash.support = {};

    /**
     * Detect if functions can be decompiled by `Function#toString`
     * (all but PS3 and older Opera mobile browsers & avoided in Windows 8 apps).
     *
     * @memberOf _.support
     * @type boolean
     */
    support.funcDecomp = !isNative(context.WinRTError) && reThis.test(runInContext);

    /**
     * Detect if `Function#name` is supported (all but IE).
     *
     * @memberOf _.support
     * @type boolean
     */
    support.funcNames = typeof Function.name == 'string';

    /**
     * By default, the template delimiters used by Lo-Dash are similar to those in
     * embedded Ruby (ERB). Change the following template settings to use alternative
     * delimiters.
     *
     * @static
     * @memberOf _
     * @type Object
     */
    lodash.templateSettings = {

      /**
       * Used to detect `data` property values to be HTML-escaped.
       *
       * @memberOf _.templateSettings
       * @type RegExp
       */
      'escape': /<%-([\s\S]+?)%>/g,

      /**
       * Used to detect code to be evaluated.
       *
       * @memberOf _.templateSettings
       * @type RegExp
       */
      'evaluate': /<%([\s\S]+?)%>/g,

      /**
       * Used to detect `data` property values to inject.
       *
       * @memberOf _.templateSettings
       * @type RegExp
       */
      'interpolate': reInterpolate,

      /**
       * Used to reference the data object in the template text.
       *
       * @memberOf _.templateSettings
       * @type string
       */
      'variable': '',

      /**
       * Used to import variables into the compiled template.
       *
       * @memberOf _.templateSettings
       * @type Object
       */
      'imports': {

        /**
         * A reference to the `lodash` function.
         *
         * @memberOf _.templateSettings.imports
         * @type Function
         */
        '_': lodash
      }
    };

    /*--------------------------------------------------------------------------*/

    /**
     * The base implementation of `_.bind` that creates the bound function and
     * sets its meta data.
     *
     * @private
     * @param {Array} bindData The bind data array.
     * @returns {Function} Returns the new bound function.
     */
    function baseBind(bindData) {
      var func = bindData[0],
          partialArgs = bindData[2],
          thisArg = bindData[4];

      function bound() {
        // `Function#bind` spec
        // http://es5.github.io/#x15.3.4.5
        if (partialArgs) {
          // avoid `arguments` object deoptimizations by using `slice` instead
          // of `Array.prototype.slice.call` and not assigning `arguments` to a
          // variable as a ternary expression
          var args = slice(partialArgs);
          push.apply(args, arguments);
        }
        // mimic the constructor's `return` behavior
        // http://es5.github.io/#x13.2.2
        if (this instanceof bound) {
          // ensure `new bound` is an instance of `func`
          var thisBinding = baseCreate(func.prototype),
              result = func.apply(thisBinding, args || arguments);
          return isObject(result) ? result : thisBinding;
        }
        return func.apply(thisArg, args || arguments);
      }
      setBindData(bound, bindData);
      return bound;
    }

    /**
     * The base implementation of `_.clone` without argument juggling or support
     * for `thisArg` binding.
     *
     * @private
     * @param {*} value The value to clone.
     * @param {boolean} [isDeep=false] Specify a deep clone.
     * @param {Function} [callback] The function to customize cloning values.
     * @param {Array} [stackA=[]] Tracks traversed source objects.
     * @param {Array} [stackB=[]] Associates clones with source counterparts.
     * @returns {*} Returns the cloned value.
     */
    function baseClone(value, isDeep, callback, stackA, stackB) {
      if (callback) {
        var result = callback(value);
        if (typeof result != 'undefined') {
          return result;
        }
      }
      // inspect [[Class]]
      var isObj = isObject(value);
      if (isObj) {
        var className = toString.call(value);
        if (!cloneableClasses[className]) {
          return value;
        }
        var ctor = ctorByClass[className];
        switch (className) {
          case boolClass:
          case dateClass:
            return new ctor(+value);

          case numberClass:
          case stringClass:
            return new ctor(value);

          case regexpClass:
            result = ctor(value.source, reFlags.exec(value));
            result.lastIndex = value.lastIndex;
            return result;
        }
      } else {
        return value;
      }
      var isArr = isArray(value);
      if (isDeep) {
        // check for circular references and return corresponding clone
        var initedStack = !stackA;
        stackA || (stackA = getArray());
        stackB || (stackB = getArray());

        var length = stackA.length;
        while (length--) {
          if (stackA[length] == value) {
            return stackB[length];
          }
        }
        result = isArr ? ctor(value.length) : {};
      }
      else {
        result = isArr ? slice(value) : assign({}, value);
      }
      // add array properties assigned by `RegExp#exec`
      if (isArr) {
        if (hasOwnProperty.call(value, 'index')) {
          result.index = value.index;
        }
        if (hasOwnProperty.call(value, 'input')) {
          result.input = value.input;
        }
      }
      // exit for shallow clone
      if (!isDeep) {
        return result;
      }
      // add the source value to the stack of traversed objects
      // and associate it with its clone
      stackA.push(value);
      stackB.push(result);

      // recursively populate clone (susceptible to call stack limits)
      (isArr ? forEach : forOwn)(value, function(objValue, key) {
        result[key] = baseClone(objValue, isDeep, callback, stackA, stackB);
      });

      if (initedStack) {
        releaseArray(stackA);
        releaseArray(stackB);
      }
      return result;
    }

    /**
     * The base implementation of `_.create` without support for assigning
     * properties to the created object.
     *
     * @private
     * @param {Object} prototype The object to inherit from.
     * @returns {Object} Returns the new object.
     */
    function baseCreate(prototype, properties) {
      return isObject(prototype) ? nativeCreate(prototype) : {};
    }
    // fallback for browsers without `Object.create`
    if (!nativeCreate) {
      baseCreate = (function() {
        function Object() {}
        return function(prototype) {
          if (isObject(prototype)) {
            Object.prototype = prototype;
            var result = new Object;
            Object.prototype = null;
          }
          return result || context.Object();
        };
      }());
    }

    /**
     * The base implementation of `_.createCallback` without support for creating
     * "_.pluck" or "_.where" style callbacks.
     *
     * @private
     * @param {*} [func=identity] The value to convert to a callback.
     * @param {*} [thisArg] The `this` binding of the created callback.
     * @param {number} [argCount] The number of arguments the callback accepts.
     * @returns {Function} Returns a callback function.
     */
    function baseCreateCallback(func, thisArg, argCount) {
      if (typeof func != 'function') {
        return identity;
      }
      // exit early for no `thisArg` or already bound by `Function#bind`
      if (typeof thisArg == 'undefined' || !('prototype' in func)) {
        return func;
      }
      var bindData = func.__bindData__;
      if (typeof bindData == 'undefined') {
        if (support.funcNames) {
          bindData = !func.name;
        }
        bindData = bindData || !support.funcDecomp;
        if (!bindData) {
          var source = fnToString.call(func);
          if (!support.funcNames) {
            bindData = !reFuncName.test(source);
          }
          if (!bindData) {
            // checks if `func` references the `this` keyword and stores the result
            bindData = reThis.test(source);
            setBindData(func, bindData);
          }
        }
      }
      // exit early if there are no `this` references or `func` is bound
      if (bindData === false || (bindData !== true && bindData[1] & 1)) {
        return func;
      }
      switch (argCount) {
        case 1: return function(value) {
          return func.call(thisArg, value);
        };
        case 2: return function(a, b) {
          return func.call(thisArg, a, b);
        };
        case 3: return function(value, index, collection) {
          return func.call(thisArg, value, index, collection);
        };
        case 4: return function(accumulator, value, index, collection) {
          return func.call(thisArg, accumulator, value, index, collection);
        };
      }
      return bind(func, thisArg);
    }

    /**
     * The base implementation of `createWrapper` that creates the wrapper and
     * sets its meta data.
     *
     * @private
     * @param {Array} bindData The bind data array.
     * @returns {Function} Returns the new function.
     */
    function baseCreateWrapper(bindData) {
      var func = bindData[0],
          bitmask = bindData[1],
          partialArgs = bindData[2],
          partialRightArgs = bindData[3],
          thisArg = bindData[4],
          arity = bindData[5];

      var isBind = bitmask & 1,
          isBindKey = bitmask & 2,
          isCurry = bitmask & 4,
          isCurryBound = bitmask & 8,
          key = func;

      function bound() {
        var thisBinding = isBind ? thisArg : this;
        if (partialArgs) {
          var args = slice(partialArgs);
          push.apply(args, arguments);
        }
        if (partialRightArgs || isCurry) {
          args || (args = slice(arguments));
          if (partialRightArgs) {
            push.apply(args, partialRightArgs);
          }
          if (isCurry && args.length < arity) {
            bitmask |= 16 & ~32;
            return baseCreateWrapper([func, (isCurryBound ? bitmask : bitmask & ~3), args, null, thisArg, arity]);
          }
        }
        args || (args = arguments);
        if (isBindKey) {
          func = thisBinding[key];
        }
        if (this instanceof bound) {
          thisBinding = baseCreate(func.prototype);
          var result = func.apply(thisBinding, args);
          return isObject(result) ? result : thisBinding;
        }
        return func.apply(thisBinding, args);
      }
      setBindData(bound, bindData);
      return bound;
    }

    /**
     * The base implementation of `_.difference` that accepts a single array
     * of values to exclude.
     *
     * @private
     * @param {Array} array The array to process.
     * @param {Array} [values] The array of values to exclude.
     * @returns {Array} Returns a new array of filtered values.
     */
    function baseDifference(array, values) {
      var index = -1,
          indexOf = getIndexOf(),
          length = array ? array.length : 0,
          isLarge = length >= largeArraySize && indexOf === baseIndexOf,
          result = [];

      if (isLarge) {
        var cache = createCache(values);
        if (cache) {
          indexOf = cacheIndexOf;
          values = cache;
        } else {
          isLarge = false;
        }
      }
      while (++index < length) {
        var value = array[index];
        if (indexOf(values, value) < 0) {
          result.push(value);
        }
      }
      if (isLarge) {
        releaseObject(values);
      }
      return result;
    }

    /**
     * The base implementation of `_.flatten` without support for callback
     * shorthands or `thisArg` binding.
     *
     * @private
     * @param {Array} array The array to flatten.
     * @param {boolean} [isShallow=false] A flag to restrict flattening to a single level.
     * @param {boolean} [isStrict=false] A flag to restrict flattening to arrays and `arguments` objects.
     * @param {number} [fromIndex=0] The index to start from.
     * @returns {Array} Returns a new flattened array.
     */
    function baseFlatten(array, isShallow, isStrict, fromIndex) {
      var index = (fromIndex || 0) - 1,
          length = array ? array.length : 0,
          result = [];

      while (++index < length) {
        var value = array[index];

        if (value && typeof value == 'object' && typeof value.length == 'number'
            && (isArray(value) || isArguments(value))) {
          // recursively flatten arrays (susceptible to call stack limits)
          if (!isShallow) {
            value = baseFlatten(value, isShallow, isStrict);
          }
          var valIndex = -1,
              valLength = value.length,
              resIndex = result.length;

          result.length += valLength;
          while (++valIndex < valLength) {
            result[resIndex++] = value[valIndex];
          }
        } else if (!isStrict) {
          result.push(value);
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.isEqual`, without support for `thisArg` binding,
     * that allows partial "_.where" style comparisons.
     *
     * @private
     * @param {*} a The value to compare.
     * @param {*} b The other value to compare.
     * @param {Function} [callback] The function to customize comparing values.
     * @param {Function} [isWhere=false] A flag to indicate performing partial comparisons.
     * @param {Array} [stackA=[]] Tracks traversed `a` objects.
     * @param {Array} [stackB=[]] Tracks traversed `b` objects.
     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
     */
    function baseIsEqual(a, b, callback, isWhere, stackA, stackB) {
      // used to indicate that when comparing objects, `a` has at least the properties of `b`
      if (callback) {
        var result = callback(a, b);
        if (typeof result != 'undefined') {
          return !!result;
        }
      }
      // exit early for identical values
      if (a === b) {
        // treat `+0` vs. `-0` as not equal
        return a !== 0 || (1 / a == 1 / b);
      }
      var type = typeof a,
          otherType = typeof b;

      // exit early for unlike primitive values
      if (a === a &&
          !(a && objectTypes[type]) &&
          !(b && objectTypes[otherType])) {
        return false;
      }
      // exit early for `null` and `undefined` avoiding ES3's Function#call behavior
      // http://es5.github.io/#x15.3.4.4
      if (a == null || b == null) {
        return a === b;
      }
      // compare [[Class]] names
      var className = toString.call(a),
          otherClass = toString.call(b);

      if (className == argsClass) {
        className = objectClass;
      }
      if (otherClass == argsClass) {
        otherClass = objectClass;
      }
      if (className != otherClass) {
        return false;
      }
      switch (className) {
        case boolClass:
        case dateClass:
          // coerce dates and booleans to numbers, dates to milliseconds and booleans
          // to `1` or `0` treating invalid dates coerced to `NaN` as not equal
          return +a == +b;

        case numberClass:
          // treat `NaN` vs. `NaN` as equal
          return (a != +a)
            ? b != +b
            // but treat `+0` vs. `-0` as not equal
            : (a == 0 ? (1 / a == 1 / b) : a == +b);

        case regexpClass:
        case stringClass:
          // coerce regexes to strings (http://es5.github.io/#x15.10.6.4)
          // treat string primitives and their corresponding object instances as equal
          return a == String(b);
      }
      var isArr = className == arrayClass;
      if (!isArr) {
        // unwrap any `lodash` wrapped values
        var aWrapped = hasOwnProperty.call(a, '__wrapped__'),
            bWrapped = hasOwnProperty.call(b, '__wrapped__');

        if (aWrapped || bWrapped) {
          return baseIsEqual(aWrapped ? a.__wrapped__ : a, bWrapped ? b.__wrapped__ : b, callback, isWhere, stackA, stackB);
        }
        // exit for functions and DOM nodes
        if (className != objectClass) {
          return false;
        }
        // in older versions of Opera, `arguments` objects have `Array` constructors
        var ctorA = a.constructor,
            ctorB = b.constructor;

        // non `Object` object instances with different constructors are not equal
        if (ctorA != ctorB &&
              !(isFunction(ctorA) && ctorA instanceof ctorA && isFunction(ctorB) && ctorB instanceof ctorB) &&
              ('constructor' in a && 'constructor' in b)
            ) {
          return false;
        }
      }
      // assume cyclic structures are equal
      // the algorithm for detecting cyclic structures is adapted from ES 5.1
      // section 15.12.3, abstract operation `JO` (http://es5.github.io/#x15.12.3)
      var initedStack = !stackA;
      stackA || (stackA = getArray());
      stackB || (stackB = getArray());

      var length = stackA.length;
      while (length--) {
        if (stackA[length] == a) {
          return stackB[length] == b;
        }
      }
      var size = 0;
      result = true;

      // add `a` and `b` to the stack of traversed objects
      stackA.push(a);
      stackB.push(b);

      // recursively compare objects and arrays (susceptible to call stack limits)
      if (isArr) {
        // compare lengths to determine if a deep comparison is necessary
        length = a.length;
        size = b.length;
        result = size == length;

        if (result || isWhere) {
          // deep compare the contents, ignoring non-numeric properties
          while (size--) {
            var index = length,
                value = b[size];

            if (isWhere) {
              while (index--) {
                if ((result = baseIsEqual(a[index], value, callback, isWhere, stackA, stackB))) {
                  break;
                }
              }
            } else if (!(result = baseIsEqual(a[size], value, callback, isWhere, stackA, stackB))) {
              break;
            }
          }
        }
      }
      else {
        // deep compare objects using `forIn`, instead of `forOwn`, to avoid `Object.keys`
        // which, in this case, is more costly
        forIn(b, function(value, key, b) {
          if (hasOwnProperty.call(b, key)) {
            // count the number of properties.
            size++;
            // deep compare each property value.
            return (result = hasOwnProperty.call(a, key) && baseIsEqual(a[key], value, callback, isWhere, stackA, stackB));
          }
        });

        if (result && !isWhere) {
          // ensure both objects have the same number of properties
          forIn(a, function(value, key, a) {
            if (hasOwnProperty.call(a, key)) {
              // `size` will be `-1` if `a` has more properties than `b`
              return (result = --size > -1);
            }
          });
        }
      }
      stackA.pop();
      stackB.pop();

      if (initedStack) {
        releaseArray(stackA);
        releaseArray(stackB);
      }
      return result;
    }

    /**
     * The base implementation of `_.merge` without argument juggling or support
     * for `thisArg` binding.
     *
     * @private
     * @param {Object} object The destination object.
     * @param {Object} source The source object.
     * @param {Function} [callback] The function to customize merging properties.
     * @param {Array} [stackA=[]] Tracks traversed source objects.
     * @param {Array} [stackB=[]] Associates values with source counterparts.
     */
    function baseMerge(object, source, callback, stackA, stackB) {
      (isArray(source) ? forEach : forOwn)(source, function(source, key) {
        var found,
            isArr,
            result = source,
            value = object[key];

        if (source && ((isArr = isArray(source)) || isPlainObject(source))) {
          // avoid merging previously merged cyclic sources
          var stackLength = stackA.length;
          while (stackLength--) {
            if ((found = stackA[stackLength] == source)) {
              value = stackB[stackLength];
              break;
            }
          }
          if (!found) {
            var isShallow;
            if (callback) {
              result = callback(value, source);
              if ((isShallow = typeof result != 'undefined')) {
                value = result;
              }
            }
            if (!isShallow) {
              value = isArr
                ? (isArray(value) ? value : [])
                : (isPlainObject(value) ? value : {});
            }
            // add `source` and associated `value` to the stack of traversed objects
            stackA.push(source);
            stackB.push(value);

            // recursively merge objects and arrays (susceptible to call stack limits)
            if (!isShallow) {
              baseMerge(value, source, callback, stackA, stackB);
            }
          }
        }
        else {
          if (callback) {
            result = callback(value, source);
            if (typeof result == 'undefined') {
              result = source;
            }
          }
          if (typeof result != 'undefined') {
            value = result;
          }
        }
        object[key] = value;
      });
    }

    /**
     * The base implementation of `_.random` without argument juggling or support
     * for returning floating-point numbers.
     *
     * @private
     * @param {number} min The minimum possible value.
     * @param {number} max The maximum possible value.
     * @returns {number} Returns a random number.
     */
    function baseRandom(min, max) {
      return min + floor(nativeRandom() * (max - min + 1));
    }

    /**
     * The base implementation of `_.uniq` without support for callback shorthands
     * or `thisArg` binding.
     *
     * @private
     * @param {Array} array The array to process.
     * @param {boolean} [isSorted=false] A flag to indicate that `array` is sorted.
     * @param {Function} [callback] The function called per iteration.
     * @returns {Array} Returns a duplicate-value-free array.
     */
    function baseUniq(array, isSorted, callback) {
      var index = -1,
          indexOf = getIndexOf(),
          length = array ? array.length : 0,
          result = [];

      var isLarge = !isSorted && length >= largeArraySize && indexOf === baseIndexOf,
          seen = (callback || isLarge) ? getArray() : result;

      if (isLarge) {
        var cache = createCache(seen);
        indexOf = cacheIndexOf;
        seen = cache;
      }
      while (++index < length) {
        var value = array[index],
            computed = callback ? callback(value, index, array) : value;

        if (isSorted
              ? !index || seen[seen.length - 1] !== computed
              : indexOf(seen, computed) < 0
            ) {
          if (callback || isLarge) {
            seen.push(computed);
          }
          result.push(value);
        }
      }
      if (isLarge) {
        releaseArray(seen.array);
        releaseObject(seen);
      } else if (callback) {
        releaseArray(seen);
      }
      return result;
    }

    /**
     * Creates a function that aggregates a collection, creating an object composed
     * of keys generated from the results of running each element of the collection
     * through a callback. The given `setter` function sets the keys and values
     * of the composed object.
     *
     * @private
     * @param {Function} setter The setter function.
     * @returns {Function} Returns the new aggregator function.
     */
    function createAggregator(setter) {
      return function(collection, callback, thisArg) {
        var result = {};
        callback = lodash.createCallback(callback, thisArg, 3);

        var index = -1,
            length = collection ? collection.length : 0;

        if (typeof length == 'number') {
          while (++index < length) {
            var value = collection[index];
            setter(result, value, callback(value, index, collection), collection);
          }
        } else {
          forOwn(collection, function(value, key, collection) {
            setter(result, value, callback(value, key, collection), collection);
          });
        }
        return result;
      };
    }

    /**
     * Creates a function that, when called, either curries or invokes `func`
     * with an optional `this` binding and partially applied arguments.
     *
     * @private
     * @param {Function|string} func The function or method name to reference.
     * @param {number} bitmask The bitmask of method flags to compose.
     *  The bitmask may be composed of the following flags:
     *  1 - `_.bind`
     *  2 - `_.bindKey`
     *  4 - `_.curry`
     *  8 - `_.curry` (bound)
     *  16 - `_.partial`
     *  32 - `_.partialRight`
     * @param {Array} [partialArgs] An array of arguments to prepend to those
     *  provided to the new function.
     * @param {Array} [partialRightArgs] An array of arguments to append to those
     *  provided to the new function.
     * @param {*} [thisArg] The `this` binding of `func`.
     * @param {number} [arity] The arity of `func`.
     * @returns {Function} Returns the new function.
     */
    function createWrapper(func, bitmask, partialArgs, partialRightArgs, thisArg, arity) {
      var isBind = bitmask & 1,
          isBindKey = bitmask & 2,
          isCurry = bitmask & 4,
          isCurryBound = bitmask & 8,
          isPartial = bitmask & 16,
          isPartialRight = bitmask & 32;

      if (!isBindKey && !isFunction(func)) {
        throw new TypeError;
      }
      if (isPartial && !partialArgs.length) {
        bitmask &= ~16;
        isPartial = partialArgs = false;
      }
      if (isPartialRight && !partialRightArgs.length) {
        bitmask &= ~32;
        isPartialRight = partialRightArgs = false;
      }
      var bindData = func && func.__bindData__;
      if (bindData && bindData !== true) {
        // clone `bindData`
        bindData = slice(bindData);
        if (bindData[2]) {
          bindData[2] = slice(bindData[2]);
        }
        if (bindData[3]) {
          bindData[3] = slice(bindData[3]);
        }
        // set `thisBinding` is not previously bound
        if (isBind && !(bindData[1] & 1)) {
          bindData[4] = thisArg;
        }
        // set if previously bound but not currently (subsequent curried functions)
        if (!isBind && bindData[1] & 1) {
          bitmask |= 8;
        }
        // set curried arity if not yet set
        if (isCurry && !(bindData[1] & 4)) {
          bindData[5] = arity;
        }
        // append partial left arguments
        if (isPartial) {
          push.apply(bindData[2] || (bindData[2] = []), partialArgs);
        }
        // append partial right arguments
        if (isPartialRight) {
          unshift.apply(bindData[3] || (bindData[3] = []), partialRightArgs);
        }
        // merge flags
        bindData[1] |= bitmask;
        return createWrapper.apply(null, bindData);
      }
      // fast path for `_.bind`
      var creater = (bitmask == 1 || bitmask === 17) ? baseBind : baseCreateWrapper;
      return creater([func, bitmask, partialArgs, partialRightArgs, thisArg, arity]);
    }

    /**
     * Used by `escape` to convert characters to HTML entities.
     *
     * @private
     * @param {string} match The matched character to escape.
     * @returns {string} Returns the escaped character.
     */
    function escapeHtmlChar(match) {
      return htmlEscapes[match];
    }

    /**
     * Gets the appropriate "indexOf" function. If the `_.indexOf` method is
     * customized, this method returns the custom method, otherwise it returns
     * the `baseIndexOf` function.
     *
     * @private
     * @returns {Function} Returns the "indexOf" function.
     */
    function getIndexOf() {
      var result = (result = lodash.indexOf) === indexOf ? baseIndexOf : result;
      return result;
    }

    /**
     * Checks if `value` is a native function.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if the `value` is a native function, else `false`.
     */
    function isNative(value) {
      return typeof value == 'function' && reNative.test(value);
    }

    /**
     * Sets `this` binding data on a given function.
     *
     * @private
     * @param {Function} func The function to set data on.
     * @param {Array} value The data array to set.
     */
    var setBindData = !defineProperty ? noop : function(func, value) {
      descriptor.value = value;
      defineProperty(func, '__bindData__', descriptor);
    };

    /**
     * A fallback implementation of `isPlainObject` which checks if a given value
     * is an object created by the `Object` constructor, assuming objects created
     * by the `Object` constructor have no inherited enumerable properties and that
     * there are no `Object.prototype` extensions.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
     */
    function shimIsPlainObject(value) {
      var ctor,
          result;

      // avoid non Object objects, `arguments` objects, and DOM elements
      if (!(value && toString.call(value) == objectClass) ||
          (ctor = value.constructor, isFunction(ctor) && !(ctor instanceof ctor))) {
        return false;
      }
      // In most environments an object's own properties are iterated before
      // its inherited properties. If the last iterated property is an object's
      // own property then there are no inherited enumerable properties.
      forIn(value, function(value, key) {
        result = key;
      });
      return typeof result == 'undefined' || hasOwnProperty.call(value, result);
    }

    /**
     * Used by `unescape` to convert HTML entities to characters.
     *
     * @private
     * @param {string} match The matched character to unescape.
     * @returns {string} Returns the unescaped character.
     */
    function unescapeHtmlChar(match) {
      return htmlUnescapes[match];
    }

    /*--------------------------------------------------------------------------*/

    /**
     * Checks if `value` is an `arguments` object.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if the `value` is an `arguments` object, else `false`.
     * @example
     *
     * (function() { return _.isArguments(arguments); })(1, 2, 3);
     * // => true
     *
     * _.isArguments([1, 2, 3]);
     * // => false
     */
    function isArguments(value) {
      return value && typeof value == 'object' && typeof value.length == 'number' &&
        toString.call(value) == argsClass || false;
    }

    /**
     * Checks if `value` is an array.
     *
     * @static
     * @memberOf _
     * @type Function
     * @category Objects
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if the `value` is an array, else `false`.
     * @example
     *
     * (function() { return _.isArray(arguments); })();
     * // => false
     *
     * _.isArray([1, 2, 3]);
     * // => true
     */
    var isArray = nativeIsArray || function(value) {
      return value && typeof value == 'object' && typeof value.length == 'number' &&
        toString.call(value) == arrayClass || false;
    };

    /**
     * A fallback implementation of `Object.keys` which produces an array of the
     * given object's own enumerable property names.
     *
     * @private
     * @type Function
     * @param {Object} object The object to inspect.
     * @returns {Array} Returns an array of property names.
     */
    var shimKeys = function(object) {
      var index, iterable = object, result = [];
      if (!iterable) return result;
      if (!(objectTypes[typeof object])) return result;
        for (index in iterable) {
          if (hasOwnProperty.call(iterable, index)) {
            result.push(index);
          }
        }
      return result
    };

    /**
     * Creates an array composed of the own enumerable property names of an object.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {Object} object The object to inspect.
     * @returns {Array} Returns an array of property names.
     * @example
     *
     * _.keys({ 'one': 1, 'two': 2, 'three': 3 });
     * // => ['one', 'two', 'three'] (property order is not guaranteed across environments)
     */
    var keys = !nativeKeys ? shimKeys : function(object) {
      if (!isObject(object)) {
        return [];
      }
      return nativeKeys(object);
    };

    /**
     * Used to convert characters to HTML entities:
     *
     * Though the `>` character is escaped for symmetry, characters like `>` and `/`
     * don't require escaping in HTML and have no special meaning unless they're part
     * of a tag or an unquoted attribute value.
     * http://mathiasbynens.be/notes/ambiguous-ampersands (under "semi-related fun fact")
     */
    var htmlEscapes = {
      '&': '&amp;',
      '<': '&lt;',
      '>': '&gt;',
      '"': '&quot;',
      "'": '&#39;'
    };

    /** Used to convert HTML entities to characters */
    var htmlUnescapes = invert(htmlEscapes);

    /** Used to match HTML entities and HTML characters */
    var reEscapedHtml = RegExp('(' + keys(htmlUnescapes).join('|') + ')', 'g'),
        reUnescapedHtml = RegExp('[' + keys(htmlEscapes).join('') + ']', 'g');

    /*--------------------------------------------------------------------------*/

    /**
     * Assigns own enumerable properties of source object(s) to the destination
     * object. Subsequent sources will overwrite property assignments of previous
     * sources. If a callback is provided it will be executed to produce the
     * assigned values. The callback is bound to `thisArg` and invoked with two
     * arguments; (objectValue, sourceValue).
     *
     * @static
     * @memberOf _
     * @type Function
     * @alias extend
     * @category Objects
     * @param {Object} object The destination object.
     * @param {...Object} [source] The source objects.
     * @param {Function} [callback] The function to customize assigning values.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {Object} Returns the destination object.
     * @example
     *
     * _.assign({ 'name': 'fred' }, { 'employer': 'slate' });
     * // => { 'name': 'fred', 'employer': 'slate' }
     *
     * var defaults = _.partialRight(_.assign, function(a, b) {
     *   return typeof a == 'undefined' ? b : a;
     * });
     *
     * var object = { 'name': 'barney' };
     * defaults(object, { 'name': 'fred', 'employer': 'slate' });
     * // => { 'name': 'barney', 'employer': 'slate' }
     */
    var assign = function(object, source, guard) {
      var index, iterable = object, result = iterable;
      if (!iterable) return result;
      var args = arguments,
          argsIndex = 0,
          argsLength = typeof guard == 'number' ? 2 : args.length;
      if (argsLength > 3 && typeof args[argsLength - 2] == 'function') {
        var callback = baseCreateCallback(args[--argsLength - 1], args[argsLength--], 2);
      } else if (argsLength > 2 && typeof args[argsLength - 1] == 'function') {
        callback = args[--argsLength];
      }
      while (++argsIndex < argsLength) {
        iterable = args[argsIndex];
        if (iterable && objectTypes[typeof iterable]) {
        var ownIndex = -1,
            ownProps = objectTypes[typeof iterable] && keys(iterable),
            length = ownProps ? ownProps.length : 0;

        while (++ownIndex < length) {
          index = ownProps[ownIndex];
          result[index] = callback ? callback(result[index], iterable[index]) : iterable[index];
        }
        }
      }
      return result
    };

    /**
     * Creates a clone of `value`. If `isDeep` is `true` nested objects will also
     * be cloned, otherwise they will be assigned by reference. If a callback
     * is provided it will be executed to produce the cloned values. If the
     * callback returns `undefined` cloning will be handled by the method instead.
     * The callback is bound to `thisArg` and invoked with one argument; (value).
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {*} value The value to clone.
     * @param {boolean} [isDeep=false] Specify a deep clone.
     * @param {Function} [callback] The function to customize cloning values.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {*} Returns the cloned value.
     * @example
     *
     * var characters = [
     *   { 'name': 'barney', 'age': 36 },
     *   { 'name': 'fred',   'age': 40 }
     * ];
     *
     * var shallow = _.clone(characters);
     * shallow[0] === characters[0];
     * // => true
     *
     * var deep = _.clone(characters, true);
     * deep[0] === characters[0];
     * // => false
     *
     * _.mixin({
     *   'clone': _.partialRight(_.clone, function(value) {
     *     return _.isElement(value) ? value.cloneNode(false) : undefined;
     *   })
     * });
     *
     * var clone = _.clone(document.body);
     * clone.childNodes.length;
     * // => 0
     */
    function clone(value, isDeep, callback, thisArg) {
      // allows working with "Collections" methods without using their `index`
      // and `collection` arguments for `isDeep` and `callback`
      if (typeof isDeep != 'boolean' && isDeep != null) {
        thisArg = callback;
        callback = isDeep;
        isDeep = false;
      }
      return baseClone(value, isDeep, typeof callback == 'function' && baseCreateCallback(callback, thisArg, 1));
    }

    /**
     * Creates a deep clone of `value`. If a callback is provided it will be
     * executed to produce the cloned values. If the callback returns `undefined`
     * cloning will be handled by the method instead. The callback is bound to
     * `thisArg` and invoked with one argument; (value).
     *
     * Note: This method is loosely based on the structured clone algorithm. Functions
     * and DOM nodes are **not** cloned. The enumerable properties of `arguments` objects and
     * objects created by constructors other than `Object` are cloned to plain `Object` objects.
     * See http://www.w3.org/TR/html5/infrastructure.html#internal-structured-cloning-algorithm.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {*} value The value to deep clone.
     * @param {Function} [callback] The function to customize cloning values.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {*} Returns the deep cloned value.
     * @example
     *
     * var characters = [
     *   { 'name': 'barney', 'age': 36 },
     *   { 'name': 'fred',   'age': 40 }
     * ];
     *
     * var deep = _.cloneDeep(characters);
     * deep[0] === characters[0];
     * // => false
     *
     * var view = {
     *   'label': 'docs',
     *   'node': element
     * };
     *
     * var clone = _.cloneDeep(view, function(value) {
     *   return _.isElement(value) ? value.cloneNode(true) : undefined;
     * });
     *
     * clone.node == view.node;
     * // => false
     */
    function cloneDeep(value, callback, thisArg) {
      return baseClone(value, true, typeof callback == 'function' && baseCreateCallback(callback, thisArg, 1));
    }

    /**
     * Creates an object that inherits from the given `prototype` object. If a
     * `properties` object is provided its own enumerable properties are assigned
     * to the created object.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {Object} prototype The object to inherit from.
     * @param {Object} [properties] The properties to assign to the object.
     * @returns {Object} Returns the new object.
     * @example
     *
     * function Shape() {
     *   this.x = 0;
     *   this.y = 0;
     * }
     *
     * function Circle() {
     *   Shape.call(this);
     * }
     *
     * Circle.prototype = _.create(Shape.prototype, { 'constructor': Circle });
     *
     * var circle = new Circle;
     * circle instanceof Circle;
     * // => true
     *
     * circle instanceof Shape;
     * // => true
     */
    function create(prototype, properties) {
      var result = baseCreate(prototype);
      return properties ? assign(result, properties) : result;
    }

    /**
     * Assigns own enumerable properties of source object(s) to the destination
     * object for all destination properties that resolve to `undefined`. Once a
     * property is set, additional defaults of the same property will be ignored.
     *
     * @static
     * @memberOf _
     * @type Function
     * @category Objects
     * @param {Object} object The destination object.
     * @param {...Object} [source] The source objects.
     * @param- {Object} [guard] Allows working with `_.reduce` without using its
     *  `key` and `object` arguments as sources.
     * @returns {Object} Returns the destination object.
     * @example
     *
     * var object = { 'name': 'barney' };
     * _.defaults(object, { 'name': 'fred', 'employer': 'slate' });
     * // => { 'name': 'barney', 'employer': 'slate' }
     */
    var defaults = function(object, source, guard) {
      var index, iterable = object, result = iterable;
      if (!iterable) return result;
      var args = arguments,
          argsIndex = 0,
          argsLength = typeof guard == 'number' ? 2 : args.length;
      while (++argsIndex < argsLength) {
        iterable = args[argsIndex];
        if (iterable && objectTypes[typeof iterable]) {
        var ownIndex = -1,
            ownProps = objectTypes[typeof iterable] && keys(iterable),
            length = ownProps ? ownProps.length : 0;

        while (++ownIndex < length) {
          index = ownProps[ownIndex];
          if (typeof result[index] == 'undefined') result[index] = iterable[index];
        }
        }
      }
      return result
    };

    /**
     * This method is like `_.findIndex` except that it returns the key of the
     * first element that passes the callback check, instead of the element itself.
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {Object} object The object to search.
     * @param {Function|Object|string} [callback=identity] The function called per
     *  iteration. If a property name or object is provided it will be used to
     *  create a "_.pluck" or "_.where" style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {string|undefined} Returns the key of the found element, else `undefined`.
     * @example
     *
     * var characters = {
     *   'barney': {  'age': 36, 'blocked': false },
     *   'fred': {    'age': 40, 'blocked': true },
     *   'pebbles': { 'age': 1,  'blocked': false }
     * };
     *
     * _.findKey(characters, function(chr) {
     *   return chr.age < 40;
     * });
     * // => 'barney' (property order is not guaranteed across environments)
     *
     * // using "_.where" callback shorthand
     * _.findKey(characters, { 'age': 1 });
     * // => 'pebbles'
     *
     * // using "_.pluck" callback shorthand
     * _.findKey(characters, 'blocked');
     * // => 'fred'
     */
    function findKey(object, callback, thisArg) {
      var result;
      callback = lodash.createCallback(callback, thisArg, 3);
      forOwn(object, function(value, key, object) {
        if (callback(value, key, object)) {
          result = key;
          return false;
        }
      });
      return result;
    }

    /**
     * This method is like `_.findKey` except that it iterates over elements
     * of a `collection` in the opposite order.
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {Object} object The object to search.
     * @param {Function|Object|string} [callback=identity] The function called per
     *  iteration. If a property name or object is provided it will be used to
     *  create a "_.pluck" or "_.where" style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {string|undefined} Returns the key of the found element, else `undefined`.
     * @example
     *
     * var characters = {
     *   'barney': {  'age': 36, 'blocked': true },
     *   'fred': {    'age': 40, 'blocked': false },
     *   'pebbles': { 'age': 1,  'blocked': true }
     * };
     *
     * _.findLastKey(characters, function(chr) {
     *   return chr.age < 40;
     * });
     * // => returns `pebbles`, assuming `_.findKey` returns `barney`
     *
     * // using "_.where" callback shorthand
     * _.findLastKey(characters, { 'age': 40 });
     * // => 'fred'
     *
     * // using "_.pluck" callback shorthand
     * _.findLastKey(characters, 'blocked');
     * // => 'pebbles'
     */
    function findLastKey(object, callback, thisArg) {
      var result;
      callback = lodash.createCallback(callback, thisArg, 3);
      forOwnRight(object, function(value, key, object) {
        if (callback(value, key, object)) {
          result = key;
          return false;
        }
      });
      return result;
    }

    /**
     * Iterates over own and inherited enumerable properties of an object,
     * executing the callback for each property. The callback is bound to `thisArg`
     * and invoked with three arguments; (value, key, object). Callbacks may exit
     * iteration early by explicitly returning `false`.
     *
     * @static
     * @memberOf _
     * @type Function
     * @category Objects
     * @param {Object} object The object to iterate over.
     * @param {Function} [callback=identity] The function called per iteration.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {Object} Returns `object`.
     * @example
     *
     * function Shape() {
     *   this.x = 0;
     *   this.y = 0;
     * }
     *
     * Shape.prototype.move = function(x, y) {
     *   this.x += x;
     *   this.y += y;
     * };
     *
     * _.forIn(new Shape, function(value, key) {
     *   console.log(key);
     * });
     * // => logs 'x', 'y', and 'move' (property order is not guaranteed across environments)
     */
    var forIn = function(collection, callback, thisArg) {
      var index, iterable = collection, result = iterable;
      if (!iterable) return result;
      if (!objectTypes[typeof iterable]) return result;
      callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3);
        for (index in iterable) {
          if (callback(iterable[index], index, collection) === false) return result;
        }
      return result
    };

    /**
     * This method is like `_.forIn` except that it iterates over elements
     * of a `collection` in the opposite order.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {Object} object The object to iterate over.
     * @param {Function} [callback=identity] The function called per iteration.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {Object} Returns `object`.
     * @example
     *
     * function Shape() {
     *   this.x = 0;
     *   this.y = 0;
     * }
     *
     * Shape.prototype.move = function(x, y) {
     *   this.x += x;
     *   this.y += y;
     * };
     *
     * _.forInRight(new Shape, function(value, key) {
     *   console.log(key);
     * });
     * // => logs 'move', 'y', and 'x' assuming `_.forIn ` logs 'x', 'y', and 'move'
     */
    function forInRight(object, callback, thisArg) {
      var pairs = [];

      forIn(object, function(value, key) {
        pairs.push(key, value);
      });

      var length = pairs.length;
      callback = baseCreateCallback(callback, thisArg, 3);
      while (length--) {
        if (callback(pairs[length--], pairs[length], object) === false) {
          break;
        }
      }
      return object;
    }

    /**
     * Iterates over own enumerable properties of an object, executing the callback
     * for each property. The callback is bound to `thisArg` and invoked with three
     * arguments; (value, key, object). Callbacks may exit iteration early by
     * explicitly returning `false`.
     *
     * @static
     * @memberOf _
     * @type Function
     * @category Objects
     * @param {Object} object The object to iterate over.
     * @param {Function} [callback=identity] The function called per iteration.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {Object} Returns `object`.
     * @example
     *
     * _.forOwn({ '0': 'zero', '1': 'one', 'length': 2 }, function(num, key) {
     *   console.log(key);
     * });
     * // => logs '0', '1', and 'length' (property order is not guaranteed across environments)
     */
    var forOwn = function(collection, callback, thisArg) {
      var index, iterable = collection, result = iterable;
      if (!iterable) return result;
      if (!objectTypes[typeof iterable]) return result;
      callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3);
        var ownIndex = -1,
            ownProps = objectTypes[typeof iterable] && keys(iterable),
            length = ownProps ? ownProps.length : 0;

        while (++ownIndex < length) {
          index = ownProps[ownIndex];
          if (callback(iterable[index], index, collection) === false) return result;
        }
      return result
    };

    /**
     * This method is like `_.forOwn` except that it iterates over elements
     * of a `collection` in the opposite order.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {Object} object The object to iterate over.
     * @param {Function} [callback=identity] The function called per iteration.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {Object} Returns `object`.
     * @example
     *
     * _.forOwnRight({ '0': 'zero', '1': 'one', 'length': 2 }, function(num, key) {
     *   console.log(key);
     * });
     * // => logs 'length', '1', and '0' assuming `_.forOwn` logs '0', '1', and 'length'
     */
    function forOwnRight(object, callback, thisArg) {
      var props = keys(object),
          length = props.length;

      callback = baseCreateCallback(callback, thisArg, 3);
      while (length--) {
        var key = props[length];
        if (callback(object[key], key, object) === false) {
          break;
        }
      }
      return object;
    }

    /**
     * Creates a sorted array of property names of all enumerable properties,
     * own and inherited, of `object` that have function values.
     *
     * @static
     * @memberOf _
     * @alias methods
     * @category Objects
     * @param {Object} object The object to inspect.
     * @returns {Array} Returns an array of property names that have function values.
     * @example
     *
     * _.functions(_);
     * // => ['all', 'any', 'bind', 'bindAll', 'clone', 'compact', 'compose', ...]
     */
    function functions(object) {
      var result = [];
      forIn(object, function(value, key) {
        if (isFunction(value)) {
          result.push(key);
        }
      });
      return result.sort();
    }

    /**
     * Checks if the specified property name exists as a direct property of `object`,
     * instead of an inherited property.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {Object} object The object to inspect.
     * @param {string} key The name of the property to check.
     * @returns {boolean} Returns `true` if key is a direct property, else `false`.
     * @example
     *
     * _.has({ 'a': 1, 'b': 2, 'c': 3 }, 'b');
     * // => true
     */
    function has(object, key) {
      return object ? hasOwnProperty.call(object, key) : false;
    }

    /**
     * Creates an object composed of the inverted keys and values of the given object.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {Object} object The object to invert.
     * @returns {Object} Returns the created inverted object.
     * @example
     *
     * _.invert({ 'first': 'fred', 'second': 'barney' });
     * // => { 'fred': 'first', 'barney': 'second' }
     */
    function invert(object) {
      var index = -1,
          props = keys(object),
          length = props.length,
          result = {};

      while (++index < length) {
        var key = props[index];
        result[object[key]] = key;
      }
      return result;
    }

    /**
     * Checks if `value` is a boolean value.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if the `value` is a boolean value, else `false`.
     * @example
     *
     * _.isBoolean(null);
     * // => false
     */
    function isBoolean(value) {
      return value === true || value === false ||
        value && typeof value == 'object' && toString.call(value) == boolClass || false;
    }

    /**
     * Checks if `value` is a date.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if the `value` is a date, else `false`.
     * @example
     *
     * _.isDate(new Date);
     * // => true
     */
    function isDate(value) {
      return value && typeof value == 'object' && toString.call(value) == dateClass || false;
    }

    /**
     * Checks if `value` is a DOM element.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if the `value` is a DOM element, else `false`.
     * @example
     *
     * _.isElement(document.body);
     * // => true
     */
    function isElement(value) {
      return value && value.nodeType === 1 || false;
    }

    /**
     * Checks if `value` is empty. Arrays, strings, or `arguments` objects with a
     * length of `0` and objects with no own enumerable properties are considered
     * "empty".
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {Array|Object|string} value The value to inspect.
     * @returns {boolean} Returns `true` if the `value` is empty, else `false`.
     * @example
     *
     * _.isEmpty([1, 2, 3]);
     * // => false
     *
     * _.isEmpty({});
     * // => true
     *
     * _.isEmpty('');
     * // => true
     */
    function isEmpty(value) {
      var result = true;
      if (!value) {
        return result;
      }
      var className = toString.call(value),
          length = value.length;

      if ((className == arrayClass || className == stringClass || className == argsClass ) ||
          (className == objectClass && typeof length == 'number' && isFunction(value.splice))) {
        return !length;
      }
      forOwn(value, function() {
        return (result = false);
      });
      return result;
    }

    /**
     * Performs a deep comparison between two values to determine if they are
     * equivalent to each other. If a callback is provided it will be executed
     * to compare values. If the callback returns `undefined` comparisons will
     * be handled by the method instead. The callback is bound to `thisArg` and
     * invoked with two arguments; (a, b).
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {*} a The value to compare.
     * @param {*} b The other value to compare.
     * @param {Function} [callback] The function to customize comparing values.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
     * @example
     *
     * var object = { 'name': 'fred' };
     * var copy = { 'name': 'fred' };
     *
     * object == copy;
     * // => false
     *
     * _.isEqual(object, copy);
     * // => true
     *
     * var words = ['hello', 'goodbye'];
     * var otherWords = ['hi', 'goodbye'];
     *
     * _.isEqual(words, otherWords, function(a, b) {
     *   var reGreet = /^(?:hello|hi)$/i,
     *       aGreet = _.isString(a) && reGreet.test(a),
     *       bGreet = _.isString(b) && reGreet.test(b);
     *
     *   return (aGreet || bGreet) ? (aGreet == bGreet) : undefined;
     * });
     * // => true
     */
    function isEqual(a, b, callback, thisArg) {
      return baseIsEqual(a, b, typeof callback == 'function' && baseCreateCallback(callback, thisArg, 2));
    }

    /**
     * Checks if `value` is, or can be coerced to, a finite number.
     *
     * Note: This is not the same as native `isFinite` which will return true for
     * booleans and empty strings. See http://es5.github.io/#x15.1.2.5.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if the `value` is finite, else `false`.
     * @example
     *
     * _.isFinite(-101);
     * // => true
     *
     * _.isFinite('10');
     * // => true
     *
     * _.isFinite(true);
     * // => false
     *
     * _.isFinite('');
     * // => false
     *
     * _.isFinite(Infinity);
     * // => false
     */
    function isFinite(value) {
      return nativeIsFinite(value) && !nativeIsNaN(parseFloat(value));
    }

    /**
     * Checks if `value` is a function.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if the `value` is a function, else `false`.
     * @example
     *
     * _.isFunction(_);
     * // => true
     */
    function isFunction(value) {
      return typeof value == 'function';
    }

    /**
     * Checks if `value` is the language type of Object.
     * (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if the `value` is an object, else `false`.
     * @example
     *
     * _.isObject({});
     * // => true
     *
     * _.isObject([1, 2, 3]);
     * // => true
     *
     * _.isObject(1);
     * // => false
     */
    function isObject(value) {
      // check if the value is the ECMAScript language type of Object
      // http://es5.github.io/#x8
      // and avoid a V8 bug
      // http://code.google.com/p/v8/issues/detail?id=2291
      return !!(value && objectTypes[typeof value]);
    }

    /**
     * Checks if `value` is `NaN`.
     *
     * Note: This is not the same as native `isNaN` which will return `true` for
     * `undefined` and other non-numeric values. See http://es5.github.io/#x15.1.2.4.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if the `value` is `NaN`, else `false`.
     * @example
     *
     * _.isNaN(NaN);
     * // => true
     *
     * _.isNaN(new Number(NaN));
     * // => true
     *
     * isNaN(undefined);
     * // => true
     *
     * _.isNaN(undefined);
     * // => false
     */
    function isNaN(value) {
      // `NaN` as a primitive is the only value that is not equal to itself
      // (perform the [[Class]] check first to avoid errors with some host objects in IE)
      return isNumber(value) && value != +value;
    }

    /**
     * Checks if `value` is `null`.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if the `value` is `null`, else `false`.
     * @example
     *
     * _.isNull(null);
     * // => true
     *
     * _.isNull(undefined);
     * // => false
     */
    function isNull(value) {
      return value === null;
    }

    /**
     * Checks if `value` is a number.
     *
     * Note: `NaN` is considered a number. See http://es5.github.io/#x8.5.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if the `value` is a number, else `false`.
     * @example
     *
     * _.isNumber(8.4 * 5);
     * // => true
     */
    function isNumber(value) {
      return typeof value == 'number' ||
        value && typeof value == 'object' && toString.call(value) == numberClass || false;
    }

    /**
     * Checks if `value` is an object created by the `Object` constructor.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
     * @example
     *
     * function Shape() {
     *   this.x = 0;
     *   this.y = 0;
     * }
     *
     * _.isPlainObject(new Shape);
     * // => false
     *
     * _.isPlainObject([1, 2, 3]);
     * // => false
     *
     * _.isPlainObject({ 'x': 0, 'y': 0 });
     * // => true
     */
    var isPlainObject = !getPrototypeOf ? shimIsPlainObject : function(value) {
      if (!(value && toString.call(value) == objectClass)) {
        return false;
      }
      var valueOf = value.valueOf,
          objProto = isNative(valueOf) && (objProto = getPrototypeOf(valueOf)) && getPrototypeOf(objProto);

      return objProto
        ? (value == objProto || getPrototypeOf(value) == objProto)
        : shimIsPlainObject(value);
    };

    /**
     * Checks if `value` is a regular expression.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if the `value` is a regular expression, else `false`.
     * @example
     *
     * _.isRegExp(/fred/);
     * // => true
     */
    function isRegExp(value) {
      return value && typeof value == 'object' && toString.call(value) == regexpClass || false;
    }

    /**
     * Checks if `value` is a string.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if the `value` is a string, else `false`.
     * @example
     *
     * _.isString('fred');
     * // => true
     */
    function isString(value) {
      return typeof value == 'string' ||
        value && typeof value == 'object' && toString.call(value) == stringClass || false;
    }

    /**
     * Checks if `value` is `undefined`.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if the `value` is `undefined`, else `false`.
     * @example
     *
     * _.isUndefined(void 0);
     * // => true
     */
    function isUndefined(value) {
      return typeof value == 'undefined';
    }

    /**
     * Creates an object with the same keys as `object` and values generated by
     * running each own enumerable property of `object` through the callback.
     * The callback is bound to `thisArg` and invoked with three arguments;
     * (value, key, object).
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {Object} object The object to iterate over.
     * @param {Function|Object|string} [callback=identity] The function called
     *  per iteration. If a property name or object is provided it will be used
     *  to create a "_.pluck" or "_.where" style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {Array} Returns a new object with values of the results of each `callback` execution.
     * @example
     *
     * _.mapValues({ 'a': 1, 'b': 2, 'c': 3} , function(num) { return num * 3; });
     * // => { 'a': 3, 'b': 6, 'c': 9 }
     *
     * var characters = {
     *   'fred': { 'name': 'fred', 'age': 40 },
     *   'pebbles': { 'name': 'pebbles', 'age': 1 }
     * };
     *
     * // using "_.pluck" callback shorthand
     * _.mapValues(characters, 'age');
     * // => { 'fred': 40, 'pebbles': 1 }
     */
    function mapValues(object, callback, thisArg) {
      var result = {};
      callback = lodash.createCallback(callback, thisArg, 3);

      forOwn(object, function(value, key, object) {
        result[key] = callback(value, key, object);
      });
      return result;
    }

    /**
     * Recursively merges own enumerable properties of the source object(s), that
     * don't resolve to `undefined` into the destination object. Subsequent sources
     * will overwrite property assignments of previous sources. If a callback is
     * provided it will be executed to produce the merged values of the destination
     * and source properties. If the callback returns `undefined` merging will
     * be handled by the method instead. The callback is bound to `thisArg` and
     * invoked with two arguments; (objectValue, sourceValue).
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {Object} object The destination object.
     * @param {...Object} [source] The source objects.
     * @param {Function} [callback] The function to customize merging properties.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {Object} Returns the destination object.
     * @example
     *
     * var names = {
     *   'characters': [
     *     { 'name': 'barney' },
     *     { 'name': 'fred' }
     *   ]
     * };
     *
     * var ages = {
     *   'characters': [
     *     { 'age': 36 },
     *     { 'age': 40 }
     *   ]
     * };
     *
     * _.merge(names, ages);
     * // => { 'characters': [{ 'name': 'barney', 'age': 36 }, { 'name': 'fred', 'age': 40 }] }
     *
     * var food = {
     *   'fruits': ['apple'],
     *   'vegetables': ['beet']
     * };
     *
     * var otherFood = {
     *   'fruits': ['banana'],
     *   'vegetables': ['carrot']
     * };
     *
     * _.merge(food, otherFood, function(a, b) {
     *   return _.isArray(a) ? a.concat(b) : undefined;
     * });
     * // => { 'fruits': ['apple', 'banana'], 'vegetables': ['beet', 'carrot] }
     */
    function merge(object) {
      var args = arguments,
          length = 2;

      if (!isObject(object)) {
        return object;
      }
      // allows working with `_.reduce` and `_.reduceRight` without using
      // their `index` and `collection` arguments
      if (typeof args[2] != 'number') {
        length = args.length;
      }
      if (length > 3 && typeof args[length - 2] == 'function') {
        var callback = baseCreateCallback(args[--length - 1], args[length--], 2);
      } else if (length > 2 && typeof args[length - 1] == 'function') {
        callback = args[--length];
      }
      var sources = slice(arguments, 1, length),
          index = -1,
          stackA = getArray(),
          stackB = getArray();

      while (++index < length) {
        baseMerge(object, sources[index], callback, stackA, stackB);
      }
      releaseArray(stackA);
      releaseArray(stackB);
      return object;
    }

    /**
     * Creates a shallow clone of `object` excluding the specified properties.
     * Property names may be specified as individual arguments or as arrays of
     * property names. If a callback is provided it will be executed for each
     * property of `object` omitting the properties the callback returns truey
     * for. The callback is bound to `thisArg` and invoked with three arguments;
     * (value, key, object).
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {Object} object The source object.
     * @param {Function|...string|string[]} [callback] The properties to omit or the
     *  function called per iteration.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {Object} Returns an object without the omitted properties.
     * @example
     *
     * _.omit({ 'name': 'fred', 'age': 40 }, 'age');
     * // => { 'name': 'fred' }
     *
     * _.omit({ 'name': 'fred', 'age': 40 }, function(value) {
     *   return typeof value == 'number';
     * });
     * // => { 'name': 'fred' }
     */
    function omit(object, callback, thisArg) {
      var result = {};
      if (typeof callback != 'function') {
        var props = [];
        forIn(object, function(value, key) {
          props.push(key);
        });
        props = baseDifference(props, baseFlatten(arguments, true, false, 1));

        var index = -1,
            length = props.length;

        while (++index < length) {
          var key = props[index];
          result[key] = object[key];
        }
      } else {
        callback = lodash.createCallback(callback, thisArg, 3);
        forIn(object, function(value, key, object) {
          if (!callback(value, key, object)) {
            result[key] = value;
          }
        });
      }
      return result;
    }

    /**
     * Creates a two dimensional array of an object's key-value pairs,
     * i.e. `[[key1, value1], [key2, value2]]`.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {Object} object The object to inspect.
     * @returns {Array} Returns new array of key-value pairs.
     * @example
     *
     * _.pairs({ 'barney': 36, 'fred': 40 });
     * // => [['barney', 36], ['fred', 40]] (property order is not guaranteed across environments)
     */
    function pairs(object) {
      var index = -1,
          props = keys(object),
          length = props.length,
          result = Array(length);

      while (++index < length) {
        var key = props[index];
        result[index] = [key, object[key]];
      }
      return result;
    }

    /**
     * Creates a shallow clone of `object` composed of the specified properties.
     * Property names may be specified as individual arguments or as arrays of
     * property names. If a callback is provided it will be executed for each
     * property of `object` picking the properties the callback returns truey
     * for. The callback is bound to `thisArg` and invoked with three arguments;
     * (value, key, object).
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {Object} object The source object.
     * @param {Function|...string|string[]} [callback] The function called per
     *  iteration or property names to pick, specified as individual property
     *  names or arrays of property names.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {Object} Returns an object composed of the picked properties.
     * @example
     *
     * _.pick({ 'name': 'fred', '_userid': 'fred1' }, 'name');
     * // => { 'name': 'fred' }
     *
     * _.pick({ 'name': 'fred', '_userid': 'fred1' }, function(value, key) {
     *   return key.charAt(0) != '_';
     * });
     * // => { 'name': 'fred' }
     */
    function pick(object, callback, thisArg) {
      var result = {};
      if (typeof callback != 'function') {
        var index = -1,
            props = baseFlatten(arguments, true, false, 1),
            length = isObject(object) ? props.length : 0;

        while (++index < length) {
          var key = props[index];
          if (key in object) {
            result[key] = object[key];
          }
        }
      } else {
        callback = lodash.createCallback(callback, thisArg, 3);
        forIn(object, function(value, key, object) {
          if (callback(value, key, object)) {
            result[key] = value;
          }
        });
      }
      return result;
    }

    /**
     * An alternative to `_.reduce` this method transforms `object` to a new
     * `accumulator` object which is the result of running each of its own
     * enumerable properties through a callback, with each callback execution
     * potentially mutating the `accumulator` object. The callback is bound to
     * `thisArg` and invoked with four arguments; (accumulator, value, key, object).
     * Callbacks may exit iteration early by explicitly returning `false`.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {Array|Object} object The object to iterate over.
     * @param {Function} [callback=identity] The function called per iteration.
     * @param {*} [accumulator] The custom accumulator value.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {*} Returns the accumulated value.
     * @example
     *
     * var squares = _.transform([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], function(result, num) {
     *   num *= num;
     *   if (num % 2) {
     *     return result.push(num) < 3;
     *   }
     * });
     * // => [1, 9, 25]
     *
     * var mapped = _.transform({ 'a': 1, 'b': 2, 'c': 3 }, function(result, num, key) {
     *   result[key] = num * 3;
     * });
     * // => { 'a': 3, 'b': 6, 'c': 9 }
     */
    function transform(object, callback, accumulator, thisArg) {
      var isArr = isArray(object);
      if (accumulator == null) {
        if (isArr) {
          accumulator = [];
        } else {
          var ctor = object && object.constructor,
              proto = ctor && ctor.prototype;

          accumulator = baseCreate(proto);
        }
      }
      if (callback) {
        callback = lodash.createCallback(callback, thisArg, 4);
        (isArr ? forEach : forOwn)(object, function(value, index, object) {
          return callback(accumulator, value, index, object);
        });
      }
      return accumulator;
    }

    /**
     * Creates an array composed of the own enumerable property values of `object`.
     *
     * @static
     * @memberOf _
     * @category Objects
     * @param {Object} object The object to inspect.
     * @returns {Array} Returns an array of property values.
     * @example
     *
     * _.values({ 'one': 1, 'two': 2, 'three': 3 });
     * // => [1, 2, 3] (property order is not guaranteed across environments)
     */
    function values(object) {
      var index = -1,
          props = keys(object),
          length = props.length,
          result = Array(length);

      while (++index < length) {
        result[index] = object[props[index]];
      }
      return result;
    }

    /*--------------------------------------------------------------------------*/

    /**
     * Creates an array of elements from the specified indexes, or keys, of the
     * `collection`. Indexes may be specified as individual arguments or as arrays
     * of indexes.
     *
     * @static
     * @memberOf _
     * @category Collections
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {...(number|number[]|string|string[])} [index] The indexes of `collection`
     *   to retrieve, specified as individual indexes or arrays of indexes.
     * @returns {Array} Returns a new array of elements corresponding to the
     *  provided indexes.
     * @example
     *
     * _.at(['a', 'b', 'c', 'd', 'e'], [0, 2, 4]);
     * // => ['a', 'c', 'e']
     *
     * _.at(['fred', 'barney', 'pebbles'], 0, 2);
     * // => ['fred', 'pebbles']
     */
    function at(collection) {
      var args = arguments,
          index = -1,
          props = baseFlatten(args, true, false, 1),
          length = (args[2] && args[2][args[1]] === collection) ? 1 : props.length,
          result = Array(length);

      while(++index < length) {
        result[index] = collection[props[index]];
      }
      return result;
    }

    /**
     * Checks if a given value is present in a collection using strict equality
     * for comparisons, i.e. `===`. If `fromIndex` is negative, it is used as the
     * offset from the end of the collection.
     *
     * @static
     * @memberOf _
     * @alias include
     * @category Collections
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {*} target The value to check for.
     * @param {number} [fromIndex=0] The index to search from.
     * @returns {boolean} Returns `true` if the `target` element is found, else `false`.
     * @example
     *
     * _.contains([1, 2, 3], 1);
     * // => true
     *
     * _.contains([1, 2, 3], 1, 2);
     * // => false
     *
     * _.contains({ 'name': 'fred', 'age': 40 }, 'fred');
     * // => true
     *
     * _.contains('pebbles', 'eb');
     * // => true
     */
    function contains(collection, target, fromIndex) {
      var index = -1,
          indexOf = getIndexOf(),
          length = collection ? collection.length : 0,
          result = false;

      fromIndex = (fromIndex < 0 ? nativeMax(0, length + fromIndex) : fromIndex) || 0;
      if (isArray(collection)) {
        result = indexOf(collection, target, fromIndex) > -1;
      } else if (typeof length == 'number') {
        result = (isString(collection) ? collection.indexOf(target, fromIndex) : indexOf(collection, target, fromIndex)) > -1;
      } else {
        forOwn(collection, function(value) {
          if (++index >= fromIndex) {
            return !(result = value === target);
          }
        });
      }
      return result;
    }

    /**
     * Creates an object composed of keys generated from the results of running
     * each element of `collection` through the callback. The corresponding value
     * of each key is the number of times the key was returned by the callback.
     * The callback is bound to `thisArg` and invoked with three arguments;
     * (value, index|key, collection).
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @category Collections
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|Object|string} [callback=identity] The function called
     *  per iteration. If a property name or object is provided it will be used
     *  to create a "_.pluck" or "_.where" style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {Object} Returns the composed aggregate object.
     * @example
     *
     * _.countBy([4.3, 6.1, 6.4], function(num) { return Math.floor(num); });
     * // => { '4': 1, '6': 2 }
     *
     * _.countBy([4.3, 6.1, 6.4], function(num) { return this.floor(num); }, Math);
     * // => { '4': 1, '6': 2 }
     *
     * _.countBy(['one', 'two', 'three'], 'length');
     * // => { '3': 2, '5': 1 }
     */
    var countBy = createAggregator(function(result, value, key) {
      (hasOwnProperty.call(result, key) ? result[key]++ : result[key] = 1);
    });

    /**
     * Checks if the given callback returns truey value for **all** elements of
     * a collection. The callback is bound to `thisArg` and invoked with three
     * arguments; (value, index|key, collection).
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @alias all
     * @category Collections
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|Object|string} [callback=identity] The function called
     *  per iteration. If a property name or object is provided it will be used
     *  to create a "_.pluck" or "_.where" style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {boolean} Returns `true` if all elements passed the callback check,
     *  else `false`.
     * @example
     *
     * _.every([true, 1, null, 'yes']);
     * // => false
     *
     * var characters = [
     *   { 'name': 'barney', 'age': 36 },
     *   { 'name': 'fred',   'age': 40 }
     * ];
     *
     * // using "_.pluck" callback shorthand
     * _.every(characters, 'age');
     * // => true
     *
     * // using "_.where" callback shorthand
     * _.every(characters, { 'age': 36 });
     * // => false
     */
    function every(collection, callback, thisArg) {
      var result = true;
      callback = lodash.createCallback(callback, thisArg, 3);

      var index = -1,
          length = collection ? collection.length : 0;

      if (typeof length == 'number') {
        while (++index < length) {
          if (!(result = !!callback(collection[index], index, collection))) {
            break;
          }
        }
      } else {
        forOwn(collection, function(value, index, collection) {
          return (result = !!callback(value, index, collection));
        });
      }
      return result;
    }

    /**
     * Iterates over elements of a collection, returning an array of all elements
     * the callback returns truey for. The callback is bound to `thisArg` and
     * invoked with three arguments; (value, index|key, collection).
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @alias select
     * @category Collections
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|Object|string} [callback=identity] The function called
     *  per iteration. If a property name or object is provided it will be used
     *  to create a "_.pluck" or "_.where" style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {Array} Returns a new array of elements that passed the callback check.
     * @example
     *
     * var evens = _.filter([1, 2, 3, 4, 5, 6], function(num) { return num % 2 == 0; });
     * // => [2, 4, 6]
     *
     * var characters = [
     *   { 'name': 'barney', 'age': 36, 'blocked': false },
     *   { 'name': 'fred',   'age': 40, 'blocked': true }
     * ];
     *
     * // using "_.pluck" callback shorthand
     * _.filter(characters, 'blocked');
     * // => [{ 'name': 'fred', 'age': 40, 'blocked': true }]
     *
     * // using "_.where" callback shorthand
     * _.filter(characters, { 'age': 36 });
     * // => [{ 'name': 'barney', 'age': 36, 'blocked': false }]
     */
    function filter(collection, callback, thisArg) {
      var result = [];
      callback = lodash.createCallback(callback, thisArg, 3);

      var index = -1,
          length = collection ? collection.length : 0;

      if (typeof length == 'number') {
        while (++index < length) {
          var value = collection[index];
          if (callback(value, index, collection)) {
            result.push(value);
          }
        }
      } else {
        forOwn(collection, function(value, index, collection) {
          if (callback(value, index, collection)) {
            result.push(value);
          }
        });
      }
      return result;
    }

    /**
     * Iterates over elements of a collection, returning the first element that
     * the callback returns truey for. The callback is bound to `thisArg` and
     * invoked with three arguments; (value, index|key, collection).
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @alias detect, findWhere
     * @category Collections
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|Object|string} [callback=identity] The function called
     *  per iteration. If a property name or object is provided it will be used
     *  to create a "_.pluck" or "_.where" style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {*} Returns the found element, else `undefined`.
     * @example
     *
     * var characters = [
     *   { 'name': 'barney',  'age': 36, 'blocked': false },
     *   { 'name': 'fred',    'age': 40, 'blocked': true },
     *   { 'name': 'pebbles', 'age': 1,  'blocked': false }
     * ];
     *
     * _.find(characters, function(chr) {
     *   return chr.age < 40;
     * });
     * // => { 'name': 'barney', 'age': 36, 'blocked': false }
     *
     * // using "_.where" callback shorthand
     * _.find(characters, { 'age': 1 });
     * // =>  { 'name': 'pebbles', 'age': 1, 'blocked': false }
     *
     * // using "_.pluck" callback shorthand
     * _.find(characters, 'blocked');
     * // => { 'name': 'fred', 'age': 40, 'blocked': true }
     */
    function find(collection, callback, thisArg) {
      callback = lodash.createCallback(callback, thisArg, 3);

      var index = -1,
          length = collection ? collection.length : 0;

      if (typeof length == 'number') {
        while (++index < length) {
          var value = collection[index];
          if (callback(value, index, collection)) {
            return value;
          }
        }
      } else {
        var result;
        forOwn(collection, function(value, index, collection) {
          if (callback(value, index, collection)) {
            result = value;
            return false;
          }
        });
        return result;
      }
    }

    /**
     * This method is like `_.find` except that it iterates over elements
     * of a `collection` from right to left.
     *
     * @static
     * @memberOf _
     * @category Collections
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|Object|string} [callback=identity] The function called
     *  per iteration. If a property name or object is provided it will be used
     *  to create a "_.pluck" or "_.where" style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {*} Returns the found element, else `undefined`.
     * @example
     *
     * _.findLast([1, 2, 3, 4], function(num) {
     *   return num % 2 == 1;
     * });
     * // => 3
     */
    function findLast(collection, callback, thisArg) {
      var result;
      callback = lodash.createCallback(callback, thisArg, 3);
      forEachRight(collection, function(value, index, collection) {
        if (callback(value, index, collection)) {
          result = value;
          return false;
        }
      });
      return result;
    }

    /**
     * Iterates over elements of a collection, executing the callback for each
     * element. The callback is bound to `thisArg` and invoked with three arguments;
     * (value, index|key, collection). Callbacks may exit iteration early by
     * explicitly returning `false`.
     *
     * Note: As with other "Collections" methods, objects with a `length` property
     * are iterated like arrays. To avoid this behavior `_.forIn` or `_.forOwn`
     * may be used for object iteration.
     *
     * @static
     * @memberOf _
     * @alias each
     * @category Collections
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function} [callback=identity] The function called per iteration.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {Array|Object|string} Returns `collection`.
     * @example
     *
     * _([1, 2, 3]).forEach(function(num) { console.log(num); }).join(',');
     * // => logs each number and returns '1,2,3'
     *
     * _.forEach({ 'one': 1, 'two': 2, 'three': 3 }, function(num) { console.log(num); });
     * // => logs each number and returns the object (property order is not guaranteed across environments)
     */
    function forEach(collection, callback, thisArg) {
      var index = -1,
          length = collection ? collection.length : 0;

      callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3);
      if (typeof length == 'number') {
        while (++index < length) {
          if (callback(collection[index], index, collection) === false) {
            break;
          }
        }
      } else {
        forOwn(collection, callback);
      }
      return collection;
    }

    /**
     * This method is like `_.forEach` except that it iterates over elements
     * of a `collection` from right to left.
     *
     * @static
     * @memberOf _
     * @alias eachRight
     * @category Collections
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function} [callback=identity] The function called per iteration.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {Array|Object|string} Returns `collection`.
     * @example
     *
     * _([1, 2, 3]).forEachRight(function(num) { console.log(num); }).join(',');
     * // => logs each number from right to left and returns '3,2,1'
     */
    function forEachRight(collection, callback, thisArg) {
      var length = collection ? collection.length : 0;
      callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3);
      if (typeof length == 'number') {
        while (length--) {
          if (callback(collection[length], length, collection) === false) {
            break;
          }
        }
      } else {
        var props = keys(collection);
        length = props.length;
        forOwn(collection, function(value, key, collection) {
          key = props ? props[--length] : --length;
          return callback(collection[key], key, collection);
        });
      }
      return collection;
    }

    /**
     * Creates an object composed of keys generated from the results of running
     * each element of a collection through the callback. The corresponding value
     * of each key is an array of the elements responsible for generating the key.
     * The callback is bound to `thisArg` and invoked with three arguments;
     * (value, index|key, collection).
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`
     *
     * @static
     * @memberOf _
     * @category Collections
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|Object|string} [callback=identity] The function called
     *  per iteration. If a property name or object is provided it will be used
     *  to create a "_.pluck" or "_.where" style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {Object} Returns the composed aggregate object.
     * @example
     *
     * _.groupBy([4.2, 6.1, 6.4], function(num) { return Math.floor(num); });
     * // => { '4': [4.2], '6': [6.1, 6.4] }
     *
     * _.groupBy([4.2, 6.1, 6.4], function(num) { return this.floor(num); }, Math);
     * // => { '4': [4.2], '6': [6.1, 6.4] }
     *
     * // using "_.pluck" callback shorthand
     * _.groupBy(['one', 'two', 'three'], 'length');
     * // => { '3': ['one', 'two'], '5': ['three'] }
     */
    var groupBy = createAggregator(function(result, value, key) {
      (hasOwnProperty.call(result, key) ? result[key] : result[key] = []).push(value);
    });

    /**
     * Creates an object composed of keys generated from the results of running
     * each element of the collection through the given callback. The corresponding
     * value of each key is the last element responsible for generating the key.
     * The callback is bound to `thisArg` and invoked with three arguments;
     * (value, index|key, collection).
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @category Collections
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|Object|string} [callback=identity] The function called
     *  per iteration. If a property name or object is provided it will be used
     *  to create a "_.pluck" or "_.where" style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {Object} Returns the composed aggregate object.
     * @example
     *
     * var keys = [
     *   { 'dir': 'left', 'code': 97 },
     *   { 'dir': 'right', 'code': 100 }
     * ];
     *
     * _.indexBy(keys, 'dir');
     * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }
     *
     * _.indexBy(keys, function(key) { return String.fromCharCode(key.code); });
     * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }
     *
     * _.indexBy(characters, function(key) { this.fromCharCode(key.code); }, String);
     * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }
     */
    var indexBy = createAggregator(function(result, value, key) {
      result[key] = value;
    });

    /**
     * Invokes the method named by `methodName` on each element in the `collection`
     * returning an array of the results of each invoked method. Additional arguments
     * will be provided to each invoked method. If `methodName` is a function it
     * will be invoked for, and `this` bound to, each element in the `collection`.
     *
     * @static
     * @memberOf _
     * @category Collections
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|string} methodName The name of the method to invoke or
     *  the function invoked per iteration.
     * @param {...*} [arg] Arguments to invoke the method with.
     * @returns {Array} Returns a new array of the results of each invoked method.
     * @example
     *
     * _.invoke([[5, 1, 7], [3, 2, 1]], 'sort');
     * // => [[1, 5, 7], [1, 2, 3]]
     *
     * _.invoke([123, 456], String.prototype.split, '');
     * // => [['1', '2', '3'], ['4', '5', '6']]
     */
    function invoke(collection, methodName) {
      var args = slice(arguments, 2),
          index = -1,
          isFunc = typeof methodName == 'function',
          length = collection ? collection.length : 0,
          result = Array(typeof length == 'number' ? length : 0);

      forEach(collection, function(value) {
        result[++index] = (isFunc ? methodName : value[methodName]).apply(value, args);
      });
      return result;
    }

    /**
     * Creates an array of values by running each element in the collection
     * through the callback. The callback is bound to `thisArg` and invoked with
     * three arguments; (value, index|key, collection).
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @alias collect
     * @category Collections
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|Object|string} [callback=identity] The function called
     *  per iteration. If a property name or object is provided it will be used
     *  to create a "_.pluck" or "_.where" style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {Array} Returns a new array of the results of each `callback` execution.
     * @example
     *
     * _.map([1, 2, 3], function(num) { return num * 3; });
     * // => [3, 6, 9]
     *
     * _.map({ 'one': 1, 'two': 2, 'three': 3 }, function(num) { return num * 3; });
     * // => [3, 6, 9] (property order is not guaranteed across environments)
     *
     * var characters = [
     *   { 'name': 'barney', 'age': 36 },
     *   { 'name': 'fred',   'age': 40 }
     * ];
     *
     * // using "_.pluck" callback shorthand
     * _.map(characters, 'name');
     * // => ['barney', 'fred']
     */
    function map(collection, callback, thisArg) {
      var index = -1,
          length = collection ? collection.length : 0;

      callback = lodash.createCallback(callback, thisArg, 3);
      if (typeof length == 'number') {
        var result = Array(length);
        while (++index < length) {
          result[index] = callback(collection[index], index, collection);
        }
      } else {
        result = [];
        forOwn(collection, function(value, key, collection) {
          result[++index] = callback(value, key, collection);
        });
      }
      return result;
    }

    /**
     * Retrieves the maximum value of a collection. If the collection is empty or
     * falsey `-Infinity` is returned. If a callback is provided it will be executed
     * for each value in the collection to generate the criterion by which the value
     * is ranked. The callback is bound to `thisArg` and invoked with three
     * arguments; (value, index, collection).
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @category Collections
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|Object|string} [callback=identity] The function called
     *  per iteration. If a property name or object is provided it will be used
     *  to create a "_.pluck" or "_.where" style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {*} Returns the maximum value.
     * @example
     *
     * _.max([4, 2, 8, 6]);
     * // => 8
     *
     * var characters = [
     *   { 'name': 'barney', 'age': 36 },
     *   { 'name': 'fred',   'age': 40 }
     * ];
     *
     * _.max(characters, function(chr) { return chr.age; });
     * // => { 'name': 'fred', 'age': 40 };
     *
     * // using "_.pluck" callback shorthand
     * _.max(characters, 'age');
     * // => { 'name': 'fred', 'age': 40 };
     */
    function max(collection, callback, thisArg) {
      var computed = -Infinity,
          result = computed;

      // allows working with functions like `_.map` without using
      // their `index` argument as a callback
      if (typeof callback != 'function' && thisArg && thisArg[callback] === collection) {
        callback = null;
      }
      if (callback == null && isArray(collection)) {
        var index = -1,
            length = collection.length;

        while (++index < length) {
          var value = collection[index];
          if (value > result) {
            result = value;
          }
        }
      } else {
        callback = (callback == null && isString(collection))
          ? charAtCallback
          : lodash.createCallback(callback, thisArg, 3);

        forEach(collection, function(value, index, collection) {
          var current = callback(value, index, collection);
          if (current > computed) {
            computed = current;
            result = value;
          }
        });
      }
      return result;
    }

    /**
     * Retrieves the minimum value of a collection. If the collection is empty or
     * falsey `Infinity` is returned. If a callback is provided it will be executed
     * for each value in the collection to generate the criterion by which the value
     * is ranked. The callback is bound to `thisArg` and invoked with three
     * arguments; (value, index, collection).
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @category Collections
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|Object|string} [callback=identity] The function called
     *  per iteration. If a property name or object is provided it will be used
     *  to create a "_.pluck" or "_.where" style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {*} Returns the minimum value.
     * @example
     *
     * _.min([4, 2, 8, 6]);
     * // => 2
     *
     * var characters = [
     *   { 'name': 'barney', 'age': 36 },
     *   { 'name': 'fred',   'age': 40 }
     * ];
     *
     * _.min(characters, function(chr) { return chr.age; });
     * // => { 'name': 'barney', 'age': 36 };
     *
     * // using "_.pluck" callback shorthand
     * _.min(characters, 'age');
     * // => { 'name': 'barney', 'age': 36 };
     */
    function min(collection, callback, thisArg) {
      var computed = Infinity,
          result = computed;

      // allows working with functions like `_.map` without using
      // their `index` argument as a callback
      if (typeof callback != 'function' && thisArg && thisArg[callback] === collection) {
        callback = null;
      }
      if (callback == null && isArray(collection)) {
        var index = -1,
            length = collection.length;

        while (++index < length) {
          var value = collection[index];
          if (value < result) {
            result = value;
          }
        }
      } else {
        callback = (callback == null && isString(collection))
          ? charAtCallback
          : lodash.createCallback(callback, thisArg, 3);

        forEach(collection, function(value, index, collection) {
          var current = callback(value, index, collection);
          if (current < computed) {
            computed = current;
            result = value;
          }
        });
      }
      return result;
    }

    /**
     * Retrieves the value of a specified property from all elements in the collection.
     *
     * @static
     * @memberOf _
     * @type Function
     * @category Collections
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {string} property The name of the property to pluck.
     * @returns {Array} Returns a new array of property values.
     * @example
     *
     * var characters = [
     *   { 'name': 'barney', 'age': 36 },
     *   { 'name': 'fred',   'age': 40 }
     * ];
     *
     * _.pluck(characters, 'name');
     * // => ['barney', 'fred']
     */
    var pluck = map;

    /**
     * Reduces a collection to a value which is the accumulated result of running
     * each element in the collection through the callback, where each successive
     * callback execution consumes the return value of the previous execution. If
     * `accumulator` is not provided the first element of the collection will be
     * used as the initial `accumulator` value. The callback is bound to `thisArg`
     * and invoked with four arguments; (accumulator, value, index|key, collection).
     *
     * @static
     * @memberOf _
     * @alias foldl, inject
     * @category Collections
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function} [callback=identity] The function called per iteration.
     * @param {*} [accumulator] Initial value of the accumulator.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {*} Returns the accumulated value.
     * @example
     *
     * var sum = _.reduce([1, 2, 3], function(sum, num) {
     *   return sum + num;
     * });
     * // => 6
     *
     * var mapped = _.reduce({ 'a': 1, 'b': 2, 'c': 3 }, function(result, num, key) {
     *   result[key] = num * 3;
     *   return result;
     * }, {});
     * // => { 'a': 3, 'b': 6, 'c': 9 }
     */
    function reduce(collection, callback, accumulator, thisArg) {
      if (!collection) return accumulator;
      var noaccum = arguments.length < 3;
      callback = lodash.createCallback(callback, thisArg, 4);

      var index = -1,
          length = collection.length;

      if (typeof length == 'number') {
        if (noaccum) {
          accumulator = collection[++index];
        }
        while (++index < length) {
          accumulator = callback(accumulator, collection[index], index, collection);
        }
      } else {
        forOwn(collection, function(value, index, collection) {
          accumulator = noaccum
            ? (noaccum = false, value)
            : callback(accumulator, value, index, collection)
        });
      }
      return accumulator;
    }

    /**
     * This method is like `_.reduce` except that it iterates over elements
     * of a `collection` from right to left.
     *
     * @static
     * @memberOf _
     * @alias foldr
     * @category Collections
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function} [callback=identity] The function called per iteration.
     * @param {*} [accumulator] Initial value of the accumulator.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {*} Returns the accumulated value.
     * @example
     *
     * var list = [[0, 1], [2, 3], [4, 5]];
     * var flat = _.reduceRight(list, function(a, b) { return a.concat(b); }, []);
     * // => [4, 5, 2, 3, 0, 1]
     */
    function reduceRight(collection, callback, accumulator, thisArg) {
      var noaccum = arguments.length < 3;
      callback = lodash.createCallback(callback, thisArg, 4);
      forEachRight(collection, function(value, index, collection) {
        accumulator = noaccum
          ? (noaccum = false, value)
          : callback(accumulator, value, index, collection);
      });
      return accumulator;
    }

    /**
     * The opposite of `_.filter` this method returns the elements of a
     * collection that the callback does **not** return truey for.
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @category Collections
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|Object|string} [callback=identity] The function called
     *  per iteration. If a property name or object is provided it will be used
     *  to create a "_.pluck" or "_.where" style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {Array} Returns a new array of elements that failed the callback check.
     * @example
     *
     * var odds = _.reject([1, 2, 3, 4, 5, 6], function(num) { return num % 2 == 0; });
     * // => [1, 3, 5]
     *
     * var characters = [
     *   { 'name': 'barney', 'age': 36, 'blocked': false },
     *   { 'name': 'fred',   'age': 40, 'blocked': true }
     * ];
     *
     * // using "_.pluck" callback shorthand
     * _.reject(characters, 'blocked');
     * // => [{ 'name': 'barney', 'age': 36, 'blocked': false }]
     *
     * // using "_.where" callback shorthand
     * _.reject(characters, { 'age': 36 });
     * // => [{ 'name': 'fred', 'age': 40, 'blocked': true }]
     */
    function reject(collection, callback, thisArg) {
      callback = lodash.createCallback(callback, thisArg, 3);
      return filter(collection, function(value, index, collection) {
        return !callback(value, index, collection);
      });
    }

    /**
     * Retrieves a random element or `n` random elements from a collection.
     *
     * @static
     * @memberOf _
     * @category Collections
     * @param {Array|Object|string} collection The collection to sample.
     * @param {number} [n] The number of elements to sample.
     * @param- {Object} [guard] Allows working with functions like `_.map`
     *  without using their `index` arguments as `n`.
     * @returns {Array} Returns the random sample(s) of `collection`.
     * @example
     *
     * _.sample([1, 2, 3, 4]);
     * // => 2
     *
     * _.sample([1, 2, 3, 4], 2);
     * // => [3, 1]
     */
    function sample(collection, n, guard) {
      if (collection && typeof collection.length != 'number') {
        collection = values(collection);
      }
      if (n == null || guard) {
        return collection ? collection[baseRandom(0, collection.length - 1)] : undefined;
      }
      var result = shuffle(collection);
      result.length = nativeMin(nativeMax(0, n), result.length);
      return result;
    }

    /**
     * Creates an array of shuffled values, using a version of the Fisher-Yates
     * shuffle. See http://en.wikipedia.org/wiki/Fisher-Yates_shuffle.
     *
     * @static
     * @memberOf _
     * @category Collections
     * @param {Array|Object|string} collection The collection to shuffle.
     * @returns {Array} Returns a new shuffled collection.
     * @example
     *
     * _.shuffle([1, 2, 3, 4, 5, 6]);
     * // => [4, 1, 6, 3, 5, 2]
     */
    function shuffle(collection) {
      var index = -1,
          length = collection ? collection.length : 0,
          result = Array(typeof length == 'number' ? length : 0);

      forEach(collection, function(value) {
        var rand = baseRandom(0, ++index);
        result[index] = result[rand];
        result[rand] = value;
      });
      return result;
    }

    /**
     * Gets the size of the `collection` by returning `collection.length` for arrays
     * and array-like objects or the number of own enumerable properties for objects.
     *
     * @static
     * @memberOf _
     * @category Collections
     * @param {Array|Object|string} collection The collection to inspect.
     * @returns {number} Returns `collection.length` or number of own enumerable properties.
     * @example
     *
     * _.size([1, 2]);
     * // => 2
     *
     * _.size({ 'one': 1, 'two': 2, 'three': 3 });
     * // => 3
     *
     * _.size('pebbles');
     * // => 7
     */
    function size(collection) {
      var length = collection ? collection.length : 0;
      return typeof length == 'number' ? length : keys(collection).length;
    }

    /**
     * Checks if the callback returns a truey value for **any** element of a
     * collection. The function returns as soon as it finds a passing value and
     * does not iterate over the entire collection. The callback is bound to
     * `thisArg` and invoked with three arguments; (value, index|key, collection).
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @alias any
     * @category Collections
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|Object|string} [callback=identity] The function called
     *  per iteration. If a property name or object is provided it will be used
     *  to create a "_.pluck" or "_.where" style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {boolean} Returns `true` if any element passed the callback check,
     *  else `false`.
     * @example
     *
     * _.some([null, 0, 'yes', false], Boolean);
     * // => true
     *
     * var characters = [
     *   { 'name': 'barney', 'age': 36, 'blocked': false },
     *   { 'name': 'fred',   'age': 40, 'blocked': true }
     * ];
     *
     * // using "_.pluck" callback shorthand
     * _.some(characters, 'blocked');
     * // => true
     *
     * // using "_.where" callback shorthand
     * _.some(characters, { 'age': 1 });
     * // => false
     */
    function some(collection, callback, thisArg) {
      var result;
      callback = lodash.createCallback(callback, thisArg, 3);

      var index = -1,
          length = collection ? collection.length : 0;

      if (typeof length == 'number') {
        while (++index < length) {
          if ((result = callback(collection[index], index, collection))) {
            break;
          }
        }
      } else {
        forOwn(collection, function(value, index, collection) {
          return !(result = callback(value, index, collection));
        });
      }
      return !!result;
    }

    /**
     * Creates an array of elements, sorted in ascending order by the results of
     * running each element in a collection through the callback. This method
     * performs a stable sort, that is, it will preserve the original sort order
     * of equal elements. The callback is bound to `thisArg` and invoked with
     * three arguments; (value, index|key, collection).
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an array of property names is provided for `callback` the collection
     * will be sorted by each property value.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @category Collections
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Array|Function|Object|string} [callback=identity] The function called
     *  per iteration. If a property name or object is provided it will be used
     *  to create a "_.pluck" or "_.where" style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {Array} Returns a new array of sorted elements.
     * @example
     *
     * _.sortBy([1, 2, 3], function(num) { return Math.sin(num); });
     * // => [3, 1, 2]
     *
     * _.sortBy([1, 2, 3], function(num) { return this.sin(num); }, Math);
     * // => [3, 1, 2]
     *
     * var characters = [
     *   { 'name': 'barney',  'age': 36 },
     *   { 'name': 'fred',    'age': 40 },
     *   { 'name': 'barney',  'age': 26 },
     *   { 'name': 'fred',    'age': 30 }
     * ];
     *
     * // using "_.pluck" callback shorthand
     * _.map(_.sortBy(characters, 'age'), _.values);
     * // => [['barney', 26], ['fred', 30], ['barney', 36], ['fred', 40]]
     *
     * // sorting by multiple properties
     * _.map(_.sortBy(characters, ['name', 'age']), _.values);
     * // = > [['barney', 26], ['barney', 36], ['fred', 30], ['fred', 40]]
     */
    function sortBy(collection, callback, thisArg) {
      var index = -1,
          isArr = isArray(callback),
          length = collection ? collection.length : 0,
          result = Array(typeof length == 'number' ? length : 0);

      if (!isArr) {
        callback = lodash.createCallback(callback, thisArg, 3);
      }
      forEach(collection, function(value, key, collection) {
        var object = result[++index] = getObject();
        if (isArr) {
          object.criteria = map(callback, function(key) { return value[key]; });
        } else {
          (object.criteria = getArray())[0] = callback(value, key, collection);
        }
        object.index = index;
        object.value = value;
      });

      length = result.length;
      result.sort(compareAscending);
      while (length--) {
        var object = result[length];
        result[length] = object.value;
        if (!isArr) {
          releaseArray(object.criteria);
        }
        releaseObject(object);
      }
      return result;
    }

    /**
     * Converts the `collection` to an array.
     *
     * @static
     * @memberOf _
     * @category Collections
     * @param {Array|Object|string} collection The collection to convert.
     * @returns {Array} Returns the new converted array.
     * @example
     *
     * (function() { return _.toArray(arguments).slice(1); })(1, 2, 3, 4);
     * // => [2, 3, 4]
     */
    function toArray(collection) {
      if (collection && typeof collection.length == 'number') {
        return slice(collection);
      }
      return values(collection);
    }

    /**
     * Performs a deep comparison of each element in a `collection` to the given
     * `properties` object, returning an array of all elements that have equivalent
     * property values.
     *
     * @static
     * @memberOf _
     * @type Function
     * @category Collections
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Object} props The object of property values to filter by.
     * @returns {Array} Returns a new array of elements that have the given properties.
     * @example
     *
     * var characters = [
     *   { 'name': 'barney', 'age': 36, 'pets': ['hoppy'] },
     *   { 'name': 'fred',   'age': 40, 'pets': ['baby puss', 'dino'] }
     * ];
     *
     * _.where(characters, { 'age': 36 });
     * // => [{ 'name': 'barney', 'age': 36, 'pets': ['hoppy'] }]
     *
     * _.where(characters, { 'pets': ['dino'] });
     * // => [{ 'name': 'fred', 'age': 40, 'pets': ['baby puss', 'dino'] }]
     */
    var where = filter;

    /*--------------------------------------------------------------------------*/

    /**
     * Creates an array with all falsey values removed. The values `false`, `null`,
     * `0`, `""`, `undefined`, and `NaN` are all falsey.
     *
     * @static
     * @memberOf _
     * @category Arrays
     * @param {Array} array The array to compact.
     * @returns {Array} Returns a new array of filtered values.
     * @example
     *
     * _.compact([0, 1, false, 2, '', 3]);
     * // => [1, 2, 3]
     */
    function compact(array) {
      var index = -1,
          length = array ? array.length : 0,
          result = [];

      while (++index < length) {
        var value = array[index];
        if (value) {
          result.push(value);
        }
      }
      return result;
    }

    /**
     * Creates an array excluding all values of the provided arrays using strict
     * equality for comparisons, i.e. `===`.
     *
     * @static
     * @memberOf _
     * @category Arrays
     * @param {Array} array The array to process.
     * @param {...Array} [values] The arrays of values to exclude.
     * @returns {Array} Returns a new array of filtered values.
     * @example
     *
     * _.difference([1, 2, 3, 4, 5], [5, 2, 10]);
     * // => [1, 3, 4]
     */
    function difference(array) {
      return baseDifference(array, baseFlatten(arguments, true, true, 1));
    }

    /**
     * This method is like `_.find` except that it returns the index of the first
     * element that passes the callback check, instead of the element itself.
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @category Arrays
     * @param {Array} array The array to search.
     * @param {Function|Object|string} [callback=identity] The function called
     *  per iteration. If a property name or object is provided it will be used
     *  to create a "_.pluck" or "_.where" style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {number} Returns the index of the found element, else `-1`.
     * @example
     *
     * var characters = [
     *   { 'name': 'barney',  'age': 36, 'blocked': false },
     *   { 'name': 'fred',    'age': 40, 'blocked': true },
     *   { 'name': 'pebbles', 'age': 1,  'blocked': false }
     * ];
     *
     * _.findIndex(characters, function(chr) {
     *   return chr.age < 20;
     * });
     * // => 2
     *
     * // using "_.where" callback shorthand
     * _.findIndex(characters, { 'age': 36 });
     * // => 0
     *
     * // using "_.pluck" callback shorthand
     * _.findIndex(characters, 'blocked');
     * // => 1
     */
    function findIndex(array, callback, thisArg) {
      var index = -1,
          length = array ? array.length : 0;

      callback = lodash.createCallback(callback, thisArg, 3);
      while (++index < length) {
        if (callback(array[index], index, array)) {
          return index;
        }
      }
      return -1;
    }

    /**
     * This method is like `_.findIndex` except that it iterates over elements
     * of a `collection` from right to left.
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @category Arrays
     * @param {Array} array The array to search.
     * @param {Function|Object|string} [callback=identity] The function called
     *  per iteration. If a property name or object is provided it will be used
     *  to create a "_.pluck" or "_.where" style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {number} Returns the index of the found element, else `-1`.
     * @example
     *
     * var characters = [
     *   { 'name': 'barney',  'age': 36, 'blocked': true },
     *   { 'name': 'fred',    'age': 40, 'blocked': false },
     *   { 'name': 'pebbles', 'age': 1,  'blocked': true }
     * ];
     *
     * _.findLastIndex(characters, function(chr) {
     *   return chr.age > 30;
     * });
     * // => 1
     *
     * // using "_.where" callback shorthand
     * _.findLastIndex(characters, { 'age': 36 });
     * // => 0
     *
     * // using "_.pluck" callback shorthand
     * _.findLastIndex(characters, 'blocked');
     * // => 2
     */
    function findLastIndex(array, callback, thisArg) {
      var length = array ? array.length : 0;
      callback = lodash.createCallback(callback, thisArg, 3);
      while (length--) {
        if (callback(array[length], length, array)) {
          return length;
        }
      }
      return -1;
    }

    /**
     * Gets the first element or first `n` elements of an array. If a callback
     * is provided elements at the beginning of the array are returned as long
     * as the callback returns truey. The callback is bound to `thisArg` and
     * invoked with three arguments; (value, index, array).
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @alias head, take
     * @category Arrays
     * @param {Array} array The array to query.
     * @param {Function|Object|number|string} [callback] The function called
     *  per element or the number of elements to return. If a property name or
     *  object is provided it will be used to create a "_.pluck" or "_.where"
     *  style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {*} Returns the first element(s) of `array`.
     * @example
     *
     * _.first([1, 2, 3]);
     * // => 1
     *
     * _.first([1, 2, 3], 2);
     * // => [1, 2]
     *
     * _.first([1, 2, 3], function(num) {
     *   return num < 3;
     * });
     * // => [1, 2]
     *
     * var characters = [
     *   { 'name': 'barney',  'blocked': true,  'employer': 'slate' },
     *   { 'name': 'fred',    'blocked': false, 'employer': 'slate' },
     *   { 'name': 'pebbles', 'blocked': true,  'employer': 'na' }
     * ];
     *
     * // using "_.pluck" callback shorthand
     * _.first(characters, 'blocked');
     * // => [{ 'name': 'barney', 'blocked': true, 'employer': 'slate' }]
     *
     * // using "_.where" callback shorthand
     * _.pluck(_.first(characters, { 'employer': 'slate' }), 'name');
     * // => ['barney', 'fred']
     */
    function first(array, callback, thisArg) {
      var n = 0,
          length = array ? array.length : 0;

      if (typeof callback != 'number' && callback != null) {
        var index = -1;
        callback = lodash.createCallback(callback, thisArg, 3);
        while (++index < length && callback(array[index], index, array)) {
          n++;
        }
      } else {
        n = callback;
        if (n == null || thisArg) {
          return array ? array[0] : undefined;
        }
      }
      return slice(array, 0, nativeMin(nativeMax(0, n), length));
    }

    /**
     * Flattens a nested array (the nesting can be to any depth). If `isShallow`
     * is truey, the array will only be flattened a single level. If a callback
     * is provided each element of the array is passed through the callback before
     * flattening. The callback is bound to `thisArg` and invoked with three
     * arguments; (value, index, array).
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @category Arrays
     * @param {Array} array The array to flatten.
     * @param {boolean} [isShallow=false] A flag to restrict flattening to a single level.
     * @param {Function|Object|string} [callback=identity] The function called
     *  per iteration. If a property name or object is provided it will be used
     *  to create a "_.pluck" or "_.where" style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {Array} Returns a new flattened array.
     * @example
     *
     * _.flatten([1, [2], [3, [[4]]]]);
     * // => [1, 2, 3, 4];
     *
     * _.flatten([1, [2], [3, [[4]]]], true);
     * // => [1, 2, 3, [[4]]];
     *
     * var characters = [
     *   { 'name': 'barney', 'age': 30, 'pets': ['hoppy'] },
     *   { 'name': 'fred',   'age': 40, 'pets': ['baby puss', 'dino'] }
     * ];
     *
     * // using "_.pluck" callback shorthand
     * _.flatten(characters, 'pets');
     * // => ['hoppy', 'baby puss', 'dino']
     */
    function flatten(array, isShallow, callback, thisArg) {
      // juggle arguments
      if (typeof isShallow != 'boolean' && isShallow != null) {
        thisArg = callback;
        callback = (typeof isShallow != 'function' && thisArg && thisArg[isShallow] === array) ? null : isShallow;
        isShallow = false;
      }
      if (callback != null) {
        array = map(array, callback, thisArg);
      }
      return baseFlatten(array, isShallow);
    }

    /**
     * Gets the index at which the first occurrence of `value` is found using
     * strict equality for comparisons, i.e. `===`. If the array is already sorted
     * providing `true` for `fromIndex` will run a faster binary search.
     *
     * @static
     * @memberOf _
     * @category Arrays
     * @param {Array} array The array to search.
     * @param {*} value The value to search for.
     * @param {boolean|number} [fromIndex=0] The index to search from or `true`
     *  to perform a binary search on a sorted array.
     * @returns {number} Returns the index of the matched value or `-1`.
     * @example
     *
     * _.indexOf([1, 2, 3, 1, 2, 3], 2);
     * // => 1
     *
     * _.indexOf([1, 2, 3, 1, 2, 3], 2, 3);
     * // => 4
     *
     * _.indexOf([1, 1, 2, 2, 3, 3], 2, true);
     * // => 2
     */
    function indexOf(array, value, fromIndex) {
      if (typeof fromIndex == 'number') {
        var length = array ? array.length : 0;
        fromIndex = (fromIndex < 0 ? nativeMax(0, length + fromIndex) : fromIndex || 0);
      } else if (fromIndex) {
        var index = sortedIndex(array, value);
        return array[index] === value ? index : -1;
      }
      return baseIndexOf(array, value, fromIndex);
    }

    /**
     * Gets all but the last element or last `n` elements of an array. If a
     * callback is provided elements at the end of the array are excluded from
     * the result as long as the callback returns truey. The callback is bound
     * to `thisArg` and invoked with three arguments; (value, index, array).
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @category Arrays
     * @param {Array} array The array to query.
     * @param {Function|Object|number|string} [callback=1] The function called
     *  per element or the number of elements to exclude. If a property name or
     *  object is provided it will be used to create a "_.pluck" or "_.where"
     *  style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {Array} Returns a slice of `array`.
     * @example
     *
     * _.initial([1, 2, 3]);
     * // => [1, 2]
     *
     * _.initial([1, 2, 3], 2);
     * // => [1]
     *
     * _.initial([1, 2, 3], function(num) {
     *   return num > 1;
     * });
     * // => [1]
     *
     * var characters = [
     *   { 'name': 'barney',  'blocked': false, 'employer': 'slate' },
     *   { 'name': 'fred',    'blocked': true,  'employer': 'slate' },
     *   { 'name': 'pebbles', 'blocked': true,  'employer': 'na' }
     * ];
     *
     * // using "_.pluck" callback shorthand
     * _.initial(characters, 'blocked');
     * // => [{ 'name': 'barney',  'blocked': false, 'employer': 'slate' }]
     *
     * // using "_.where" callback shorthand
     * _.pluck(_.initial(characters, { 'employer': 'na' }), 'name');
     * // => ['barney', 'fred']
     */
    function initial(array, callback, thisArg) {
      var n = 0,
          length = array ? array.length : 0;

      if (typeof callback != 'number' && callback != null) {
        var index = length;
        callback = lodash.createCallback(callback, thisArg, 3);
        while (index-- && callback(array[index], index, array)) {
          n++;
        }
      } else {
        n = (callback == null || thisArg) ? 1 : callback || n;
      }
      return slice(array, 0, nativeMin(nativeMax(0, length - n), length));
    }

    /**
     * Creates an array of unique values present in all provided arrays using
     * strict equality for comparisons, i.e. `===`.
     *
     * @static
     * @memberOf _
     * @category Arrays
     * @param {...Array} [array] The arrays to inspect.
     * @returns {Array} Returns an array of shared values.
     * @example
     *
     * _.intersection([1, 2, 3], [5, 2, 1, 4], [2, 1]);
     * // => [1, 2]
     */
    function intersection() {
      var args = [],
          argsIndex = -1,
          argsLength = arguments.length,
          caches = getArray(),
          indexOf = getIndexOf(),
          trustIndexOf = indexOf === baseIndexOf,
          seen = getArray();

      while (++argsIndex < argsLength) {
        var value = arguments[argsIndex];
        if (isArray(value) || isArguments(value)) {
          args.push(value);
          caches.push(trustIndexOf && value.length >= largeArraySize &&
            createCache(argsIndex ? args[argsIndex] : seen));
        }
      }
      var array = args[0],
          index = -1,
          length = array ? array.length : 0,
          result = [];

      outer:
      while (++index < length) {
        var cache = caches[0];
        value = array[index];

        if ((cache ? cacheIndexOf(cache, value) : indexOf(seen, value)) < 0) {
          argsIndex = argsLength;
          (cache || seen).push(value);
          while (--argsIndex) {
            cache = caches[argsIndex];
            if ((cache ? cacheIndexOf(cache, value) : indexOf(args[argsIndex], value)) < 0) {
              continue outer;
            }
          }
          result.push(value);
        }
      }
      while (argsLength--) {
        cache = caches[argsLength];
        if (cache) {
          releaseObject(cache);
        }
      }
      releaseArray(caches);
      releaseArray(seen);
      return result;
    }

    /**
     * Gets the last element or last `n` elements of an array. If a callback is
     * provided elements at the end of the array are returned as long as the
     * callback returns truey. The callback is bound to `thisArg` and invoked
     * with three arguments; (value, index, array).
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @category Arrays
     * @param {Array} array The array to query.
     * @param {Function|Object|number|string} [callback] The function called
     *  per element or the number of elements to return. If a property name or
     *  object is provided it will be used to create a "_.pluck" or "_.where"
     *  style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {*} Returns the last element(s) of `array`.
     * @example
     *
     * _.last([1, 2, 3]);
     * // => 3
     *
     * _.last([1, 2, 3], 2);
     * // => [2, 3]
     *
     * _.last([1, 2, 3], function(num) {
     *   return num > 1;
     * });
     * // => [2, 3]
     *
     * var characters = [
     *   { 'name': 'barney',  'blocked': false, 'employer': 'slate' },
     *   { 'name': 'fred',    'blocked': true,  'employer': 'slate' },
     *   { 'name': 'pebbles', 'blocked': true,  'employer': 'na' }
     * ];
     *
     * // using "_.pluck" callback shorthand
     * _.pluck(_.last(characters, 'blocked'), 'name');
     * // => ['fred', 'pebbles']
     *
     * // using "_.where" callback shorthand
     * _.last(characters, { 'employer': 'na' });
     * // => [{ 'name': 'pebbles', 'blocked': true, 'employer': 'na' }]
     */
    function last(array, callback, thisArg) {
      var n = 0,
          length = array ? array.length : 0;

      if (typeof callback != 'number' && callback != null) {
        var index = length;
        callback = lodash.createCallback(callback, thisArg, 3);
        while (index-- && callback(array[index], index, array)) {
          n++;
        }
      } else {
        n = callback;
        if (n == null || thisArg) {
          return array ? array[length - 1] : undefined;
        }
      }
      return slice(array, nativeMax(0, length - n));
    }

    /**
     * Gets the index at which the last occurrence of `value` is found using strict
     * equality for comparisons, i.e. `===`. If `fromIndex` is negative, it is used
     * as the offset from the end of the collection.
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @category Arrays
     * @param {Array} array The array to search.
     * @param {*} value The value to search for.
     * @param {number} [fromIndex=array.length-1] The index to search from.
     * @returns {number} Returns the index of the matched value or `-1`.
     * @example
     *
     * _.lastIndexOf([1, 2, 3, 1, 2, 3], 2);
     * // => 4
     *
     * _.lastIndexOf([1, 2, 3, 1, 2, 3], 2, 3);
     * // => 1
     */
    function lastIndexOf(array, value, fromIndex) {
      var index = array ? array.length : 0;
      if (typeof fromIndex == 'number') {
        index = (fromIndex < 0 ? nativeMax(0, index + fromIndex) : nativeMin(fromIndex, index - 1)) + 1;
      }
      while (index--) {
        if (array[index] === value) {
          return index;
        }
      }
      return -1;
    }

    /**
     * Removes all provided values from the given array using strict equality for
     * comparisons, i.e. `===`.
     *
     * @static
     * @memberOf _
     * @category Arrays
     * @param {Array} array The array to modify.
     * @param {...*} [value] The values to remove.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = [1, 2, 3, 1, 2, 3];
     * _.pull(array, 2, 3);
     * console.log(array);
     * // => [1, 1]
     */
    function pull(array) {
      var args = arguments,
          argsIndex = 0,
          argsLength = args.length,
          length = array ? array.length : 0;

      while (++argsIndex < argsLength) {
        var index = -1,
            value = args[argsIndex];
        while (++index < length) {
          if (array[index] === value) {
            splice.call(array, index--, 1);
            length--;
          }
        }
      }
      return array;
    }

    /**
     * Creates an array of numbers (positive and/or negative) progressing from
     * `start` up to but not including `end`. If `start` is less than `stop` a
     * zero-length range is created unless a negative `step` is specified.
     *
     * @static
     * @memberOf _
     * @category Arrays
     * @param {number} [start=0] The start of the range.
     * @param {number} end The end of the range.
     * @param {number} [step=1] The value to increment or decrement by.
     * @returns {Array} Returns a new range array.
     * @example
     *
     * _.range(4);
     * // => [0, 1, 2, 3]
     *
     * _.range(1, 5);
     * // => [1, 2, 3, 4]
     *
     * _.range(0, 20, 5);
     * // => [0, 5, 10, 15]
     *
     * _.range(0, -4, -1);
     * // => [0, -1, -2, -3]
     *
     * _.range(1, 4, 0);
     * // => [1, 1, 1]
     *
     * _.range(0);
     * // => []
     */
    function range(start, end, step) {
      start = +start || 0;
      step = typeof step == 'number' ? step : (+step || 1);

      if (end == null) {
        end = start;
        start = 0;
      }
      // use `Array(length)` so engines like Chakra and V8 avoid slower modes
      // http://youtu.be/XAqIpGU8ZZk#t=17m25s
      var index = -1,
          length = nativeMax(0, ceil((end - start) / (step || 1))),
          result = Array(length);

      while (++index < length) {
        result[index] = start;
        start += step;
      }
      return result;
    }

    /**
     * Removes all elements from an array that the callback returns truey for
     * and returns an array of removed elements. The callback is bound to `thisArg`
     * and invoked with three arguments; (value, index, array).
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @category Arrays
     * @param {Array} array The array to modify.
     * @param {Function|Object|string} [callback=identity] The function called
     *  per iteration. If a property name or object is provided it will be used
     *  to create a "_.pluck" or "_.where" style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {Array} Returns a new array of removed elements.
     * @example
     *
     * var array = [1, 2, 3, 4, 5, 6];
     * var evens = _.remove(array, function(num) { return num % 2 == 0; });
     *
     * console.log(array);
     * // => [1, 3, 5]
     *
     * console.log(evens);
     * // => [2, 4, 6]
     */
    function remove(array, callback, thisArg) {
      var index = -1,
          length = array ? array.length : 0,
          result = [];

      callback = lodash.createCallback(callback, thisArg, 3);
      while (++index < length) {
        var value = array[index];
        if (callback(value, index, array)) {
          result.push(value);
          splice.call(array, index--, 1);
          length--;
        }
      }
      return result;
    }

    /**
     * The opposite of `_.initial` this method gets all but the first element or
     * first `n` elements of an array. If a callback function is provided elements
     * at the beginning of the array are excluded from the result as long as the
     * callback returns truey. The callback is bound to `thisArg` and invoked
     * with three arguments; (value, index, array).
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @alias drop, tail
     * @category Arrays
     * @param {Array} array The array to query.
     * @param {Function|Object|number|string} [callback=1] The function called
     *  per element or the number of elements to exclude. If a property name or
     *  object is provided it will be used to create a "_.pluck" or "_.where"
     *  style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {Array} Returns a slice of `array`.
     * @example
     *
     * _.rest([1, 2, 3]);
     * // => [2, 3]
     *
     * _.rest([1, 2, 3], 2);
     * // => [3]
     *
     * _.rest([1, 2, 3], function(num) {
     *   return num < 3;
     * });
     * // => [3]
     *
     * var characters = [
     *   { 'name': 'barney',  'blocked': true,  'employer': 'slate' },
     *   { 'name': 'fred',    'blocked': false,  'employer': 'slate' },
     *   { 'name': 'pebbles', 'blocked': true, 'employer': 'na' }
     * ];
     *
     * // using "_.pluck" callback shorthand
     * _.pluck(_.rest(characters, 'blocked'), 'name');
     * // => ['fred', 'pebbles']
     *
     * // using "_.where" callback shorthand
     * _.rest(characters, { 'employer': 'slate' });
     * // => [{ 'name': 'pebbles', 'blocked': true, 'employer': 'na' }]
     */
    function rest(array, callback, thisArg) {
      if (typeof callback != 'number' && callback != null) {
        var n = 0,
            index = -1,
            length = array ? array.length : 0;

        callback = lodash.createCallback(callback, thisArg, 3);
        while (++index < length && callback(array[index], index, array)) {
          n++;
        }
      } else {
        n = (callback == null || thisArg) ? 1 : nativeMax(0, callback);
      }
      return slice(array, n);
    }

    /**
     * Uses a binary search to determine the smallest index at which a value
     * should be inserted into a given sorted array in order to maintain the sort
     * order of the array. If a callback is provided it will be executed for
     * `value` and each element of `array` to compute their sort ranking. The
     * callback is bound to `thisArg` and invoked with one argument; (value).
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @category Arrays
     * @param {Array} array The array to inspect.
     * @param {*} value The value to evaluate.
     * @param {Function|Object|string} [callback=identity] The function called
     *  per iteration. If a property name or object is provided it will be used
     *  to create a "_.pluck" or "_.where" style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     * @example
     *
     * _.sortedIndex([20, 30, 50], 40);
     * // => 2
     *
     * // using "_.pluck" callback shorthand
     * _.sortedIndex([{ 'x': 20 }, { 'x': 30 }, { 'x': 50 }], { 'x': 40 }, 'x');
     * // => 2
     *
     * var dict = {
     *   'wordToNumber': { 'twenty': 20, 'thirty': 30, 'fourty': 40, 'fifty': 50 }
     * };
     *
     * _.sortedIndex(['twenty', 'thirty', 'fifty'], 'fourty', function(word) {
     *   return dict.wordToNumber[word];
     * });
     * // => 2
     *
     * _.sortedIndex(['twenty', 'thirty', 'fifty'], 'fourty', function(word) {
     *   return this.wordToNumber[word];
     * }, dict);
     * // => 2
     */
    function sortedIndex(array, value, callback, thisArg) {
      var low = 0,
          high = array ? array.length : low;

      // explicitly reference `identity` for better inlining in Firefox
      callback = callback ? lodash.createCallback(callback, thisArg, 1) : identity;
      value = callback(value);

      while (low < high) {
        var mid = (low + high) >>> 1;
        (callback(array[mid]) < value)
          ? low = mid + 1
          : high = mid;
      }
      return low;
    }

    /**
     * Creates an array of unique values, in order, of the provided arrays using
     * strict equality for comparisons, i.e. `===`.
     *
     * @static
     * @memberOf _
     * @category Arrays
     * @param {...Array} [array] The arrays to inspect.
     * @returns {Array} Returns an array of combined values.
     * @example
     *
     * _.union([1, 2, 3], [5, 2, 1, 4], [2, 1]);
     * // => [1, 2, 3, 5, 4]
     */
    function union() {
      return baseUniq(baseFlatten(arguments, true, true));
    }

    /**
     * Creates a duplicate-value-free version of an array using strict equality
     * for comparisons, i.e. `===`. If the array is sorted, providing
     * `true` for `isSorted` will use a faster algorithm. If a callback is provided
     * each element of `array` is passed through the callback before uniqueness
     * is computed. The callback is bound to `thisArg` and invoked with three
     * arguments; (value, index, array).
     *
     * If a property name is provided for `callback` the created "_.pluck" style
     * callback will return the property value of the given element.
     *
     * If an object is provided for `callback` the created "_.where" style callback
     * will return `true` for elements that have the properties of the given object,
     * else `false`.
     *
     * @static
     * @memberOf _
     * @alias unique
     * @category Arrays
     * @param {Array} array The array to process.
     * @param {boolean} [isSorted=false] A flag to indicate that `array` is sorted.
     * @param {Function|Object|string} [callback=identity] The function called
     *  per iteration. If a property name or object is provided it will be used
     *  to create a "_.pluck" or "_.where" style callback, respectively.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {Array} Returns a duplicate-value-free array.
     * @example
     *
     * _.uniq([1, 2, 1, 3, 1]);
     * // => [1, 2, 3]
     *
     * _.uniq([1, 1, 2, 2, 3], true);
     * // => [1, 2, 3]
     *
     * _.uniq(['A', 'b', 'C', 'a', 'B', 'c'], function(letter) { return letter.toLowerCase(); });
     * // => ['A', 'b', 'C']
     *
     * _.uniq([1, 2.5, 3, 1.5, 2, 3.5], function(num) { return this.floor(num); }, Math);
     * // => [1, 2.5, 3]
     *
     * // using "_.pluck" callback shorthand
     * _.uniq([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');
     * // => [{ 'x': 1 }, { 'x': 2 }]
     */
    function uniq(array, isSorted, callback, thisArg) {
      // juggle arguments
      if (typeof isSorted != 'boolean' && isSorted != null) {
        thisArg = callback;
        callback = (typeof isSorted != 'function' && thisArg && thisArg[isSorted] === array) ? null : isSorted;
        isSorted = false;
      }
      if (callback != null) {
        callback = lodash.createCallback(callback, thisArg, 3);
      }
      return baseUniq(array, isSorted, callback);
    }

    /**
     * Creates an array excluding all provided values using strict equality for
     * comparisons, i.e. `===`.
     *
     * @static
     * @memberOf _
     * @category Arrays
     * @param {Array} array The array to filter.
     * @param {...*} [value] The values to exclude.
     * @returns {Array} Returns a new array of filtered values.
     * @example
     *
     * _.without([1, 2, 1, 0, 3, 1, 4], 0, 1);
     * // => [2, 3, 4]
     */
    function without(array) {
      return baseDifference(array, slice(arguments, 1));
    }

    /**
     * Creates an array that is the symmetric difference of the provided arrays.
     * See http://en.wikipedia.org/wiki/Symmetric_difference.
     *
     * @static
     * @memberOf _
     * @category Arrays
     * @param {...Array} [array] The arrays to inspect.
     * @returns {Array} Returns an array of values.
     * @example
     *
     * _.xor([1, 2, 3], [5, 2, 1, 4]);
     * // => [3, 5, 4]
     *
     * _.xor([1, 2, 5], [2, 3, 5], [3, 4, 5]);
     * // => [1, 4, 5]
     */
    function xor() {
      var index = -1,
          length = arguments.length;

      while (++index < length) {
        var array = arguments[index];
        if (isArray(array) || isArguments(array)) {
          var result = result
            ? baseUniq(baseDifference(result, array).concat(baseDifference(array, result)))
            : array;
        }
      }
      return result || [];
    }

    /**
     * Creates an array of grouped elements, the first of which contains the first
     * elements of the given arrays, the second of which contains the second
     * elements of the given arrays, and so on.
     *
     * @static
     * @memberOf _
     * @alias unzip
     * @category Arrays
     * @param {...Array} [array] Arrays to process.
     * @returns {Array} Returns a new array of grouped elements.
     * @example
     *
     * _.zip(['fred', 'barney'], [30, 40], [true, false]);
     * // => [['fred', 30, true], ['barney', 40, false]]
     */
    function zip() {
      var array = arguments.length > 1 ? arguments : arguments[0],
          index = -1,
          length = array ? max(pluck(array, 'length')) : 0,
          result = Array(length < 0 ? 0 : length);

      while (++index < length) {
        result[index] = pluck(array, index);
      }
      return result;
    }

    /**
     * Creates an object composed from arrays of `keys` and `values`. Provide
     * either a single two dimensional array, i.e. `[[key1, value1], [key2, value2]]`
     * or two arrays, one of `keys` and one of corresponding `values`.
     *
     * @static
     * @memberOf _
     * @alias object
     * @category Arrays
     * @param {Array} keys The array of keys.
     * @param {Array} [values=[]] The array of values.
     * @returns {Object} Returns an object composed of the given keys and
     *  corresponding values.
     * @example
     *
     * _.zipObject(['fred', 'barney'], [30, 40]);
     * // => { 'fred': 30, 'barney': 40 }
     */
    function zipObject(keys, values) {
      var index = -1,
          length = keys ? keys.length : 0,
          result = {};

      if (!values && length && !isArray(keys[0])) {
        values = [];
      }
      while (++index < length) {
        var key = keys[index];
        if (values) {
          result[key] = values[index];
        } else if (key) {
          result[key[0]] = key[1];
        }
      }
      return result;
    }

    /*--------------------------------------------------------------------------*/

    /**
     * Creates a function that executes `func`, with  the `this` binding and
     * arguments of the created function, only after being called `n` times.
     *
     * @static
     * @memberOf _
     * @category Functions
     * @param {number} n The number of times the function must be called before
     *  `func` is executed.
     * @param {Function} func The function to restrict.
     * @returns {Function} Returns the new restricted function.
     * @example
     *
     * var saves = ['profile', 'settings'];
     *
     * var done = _.after(saves.length, function() {
     *   console.log('Done saving!');
     * });
     *
     * _.forEach(saves, function(type) {
     *   asyncSave({ 'type': type, 'complete': done });
     * });
     * // => logs 'Done saving!', after all saves have completed
     */
    function after(n, func) {
      if (!isFunction(func)) {
        throw new TypeError;
      }
      return function() {
        if (--n < 1) {
          return func.apply(this, arguments);
        }
      };
    }

    /**
     * Creates a function that, when called, invokes `func` with the `this`
     * binding of `thisArg` and prepends any additional `bind` arguments to those
     * provided to the bound function.
     *
     * @static
     * @memberOf _
     * @category Functions
     * @param {Function} func The function to bind.
     * @param {*} [thisArg] The `this` binding of `func`.
     * @param {...*} [arg] Arguments to be partially applied.
     * @returns {Function} Returns the new bound function.
     * @example
     *
     * var func = function(greeting) {
     *   return greeting + ' ' + this.name;
     * };
     *
     * func = _.bind(func, { 'name': 'fred' }, 'hi');
     * func();
     * // => 'hi fred'
     */
    function bind(func, thisArg) {
      return arguments.length > 2
        ? createWrapper(func, 17, slice(arguments, 2), null, thisArg)
        : createWrapper(func, 1, null, null, thisArg);
    }

    /**
     * Binds methods of an object to the object itself, overwriting the existing
     * method. Method names may be specified as individual arguments or as arrays
     * of method names. If no method names are provided all the function properties
     * of `object` will be bound.
     *
     * @static
     * @memberOf _
     * @category Functions
     * @param {Object} object The object to bind and assign the bound methods to.
     * @param {...string} [methodName] The object method names to
     *  bind, specified as individual method names or arrays of method names.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var view = {
     *   'label': 'docs',
     *   'onClick': function() { console.log('clicked ' + this.label); }
     * };
     *
     * _.bindAll(view);
     * jQuery('#docs').on('click', view.onClick);
     * // => logs 'clicked docs', when the button is clicked
     */
    function bindAll(object) {
      var funcs = arguments.length > 1 ? baseFlatten(arguments, true, false, 1) : functions(object),
          index = -1,
          length = funcs.length;

      while (++index < length) {
        var key = funcs[index];
        object[key] = createWrapper(object[key], 1, null, null, object);
      }
      return object;
    }

    /**
     * Creates a function that, when called, invokes the method at `object[key]`
     * and prepends any additional `bindKey` arguments to those provided to the bound
     * function. This method differs from `_.bind` by allowing bound functions to
     * reference methods that will be redefined or don't yet exist.
     * See http://michaux.ca/articles/lazy-function-definition-pattern.
     *
     * @static
     * @memberOf _
     * @category Functions
     * @param {Object} object The object the method belongs to.
     * @param {string} key The key of the method.
     * @param {...*} [arg] Arguments to be partially applied.
     * @returns {Function} Returns the new bound function.
     * @example
     *
     * var object = {
     *   'name': 'fred',
     *   'greet': function(greeting) {
     *     return greeting + ' ' + this.name;
     *   }
     * };
     *
     * var func = _.bindKey(object, 'greet', 'hi');
     * func();
     * // => 'hi fred'
     *
     * object.greet = function(greeting) {
     *   return greeting + 'ya ' + this.name + '!';
     * };
     *
     * func();
     * // => 'hiya fred!'
     */
    function bindKey(object, key) {
      return arguments.length > 2
        ? createWrapper(key, 19, slice(arguments, 2), null, object)
        : createWrapper(key, 3, null, null, object);
    }

    /**
     * Creates a function that is the composition of the provided functions,
     * where each function consumes the return value of the function that follows.
     * For example, composing the functions `f()`, `g()`, and `h()` produces `f(g(h()))`.
     * Each function is executed with the `this` binding of the composed function.
     *
     * @static
     * @memberOf _
     * @category Functions
     * @param {...Function} [func] Functions to compose.
     * @returns {Function} Returns the new composed function.
     * @example
     *
     * var realNameMap = {
     *   'pebbles': 'penelope'
     * };
     *
     * var format = function(name) {
     *   name = realNameMap[name.toLowerCase()] || name;
     *   return name.charAt(0).toUpperCase() + name.slice(1).toLowerCase();
     * };
     *
     * var greet = function(formatted) {
     *   return 'Hiya ' + formatted + '!';
     * };
     *
     * var welcome = _.compose(greet, format);
     * welcome('pebbles');
     * // => 'Hiya Penelope!'
     */
    function compose() {
      var funcs = arguments,
          length = funcs.length;

      while (length--) {
        if (!isFunction(funcs[length])) {
          throw new TypeError;
        }
      }
      return function() {
        var args = arguments,
            length = funcs.length;

        while (length--) {
          args = [funcs[length].apply(this, args)];
        }
        return args[0];
      };
    }

    /**
     * Creates a function which accepts one or more arguments of `func` that when
     * invoked either executes `func` returning its result, if all `func` arguments
     * have been provided, or returns a function that accepts one or more of the
     * remaining `func` arguments, and so on. The arity of `func` can be specified
     * if `func.length` is not sufficient.
     *
     * @static
     * @memberOf _
     * @category Functions
     * @param {Function} func The function to curry.
     * @param {number} [arity=func.length] The arity of `func`.
     * @returns {Function} Returns the new curried function.
     * @example
     *
     * var curried = _.curry(function(a, b, c) {
     *   console.log(a + b + c);
     * });
     *
     * curried(1)(2)(3);
     * // => 6
     *
     * curried(1, 2)(3);
     * // => 6
     *
     * curried(1, 2, 3);
     * // => 6
     */
    function curry(func, arity) {
      arity = typeof arity == 'number' ? arity : (+arity || func.length);
      return createWrapper(func, 4, null, null, null, arity);
    }

    /**
     * Creates a function that will delay the execution of `func` until after
     * `wait` milliseconds have elapsed since the last time it was invoked.
     * Provide an options object to indicate that `func` should be invoked on
     * the leading and/or trailing edge of the `wait` timeout. Subsequent calls
     * to the debounced function will return the result of the last `func` call.
     *
     * Note: If `leading` and `trailing` options are `true` `func` will be called
     * on the trailing edge of the timeout only if the the debounced function is
     * invoked more than once during the `wait` timeout.
     *
     * @static
     * @memberOf _
     * @category Functions
     * @param {Function} func The function to debounce.
     * @param {number} wait The number of milliseconds to delay.
     * @param {Object} [options] The options object.
     * @param {boolean} [options.leading=false] Specify execution on the leading edge of the timeout.
     * @param {number} [options.maxWait] The maximum time `func` is allowed to be delayed before it's called.
     * @param {boolean} [options.trailing=true] Specify execution on the trailing edge of the timeout.
     * @returns {Function} Returns the new debounced function.
     * @example
     *
     * // avoid costly calculations while the window size is in flux
     * var lazyLayout = _.debounce(calculateLayout, 150);
     * jQuery(window).on('resize', lazyLayout);
     *
     * // execute `sendMail` when the click event is fired, debouncing subsequent calls
     * jQuery('#postbox').on('click', _.debounce(sendMail, 300, {
     *   'leading': true,
     *   'trailing': false
     * });
     *
     * // ensure `batchLog` is executed once after 1 second of debounced calls
     * var source = new EventSource('/stream');
     * source.addEventListener('message', _.debounce(batchLog, 250, {
     *   'maxWait': 1000
     * }, false);
     */
    function debounce(func, wait, options) {
      var args,
          maxTimeoutId,
          result,
          stamp,
          thisArg,
          timeoutId,
          trailingCall,
          lastCalled = 0,
          maxWait = false,
          trailing = true;

      if (!isFunction(func)) {
        throw new TypeError;
      }
      wait = nativeMax(0, wait) || 0;
      if (options === true) {
        var leading = true;
        trailing = false;
      } else if (isObject(options)) {
        leading = options.leading;
        maxWait = 'maxWait' in options && (nativeMax(wait, options.maxWait) || 0);
        trailing = 'trailing' in options ? options.trailing : trailing;
      }
      var delayed = function() {
        var remaining = wait - (now() - stamp);
        if (remaining <= 0) {
          if (maxTimeoutId) {
            clearTimeout(maxTimeoutId);
          }
          var isCalled = trailingCall;
          maxTimeoutId = timeoutId = trailingCall = undefined;
          if (isCalled) {
            lastCalled = now();
            result = func.apply(thisArg, args);
            if (!timeoutId && !maxTimeoutId) {
              args = thisArg = null;
            }
          }
        } else {
          timeoutId = setTimeout(delayed, remaining);
        }
      };

      var maxDelayed = function() {
        if (timeoutId) {
          clearTimeout(timeoutId);
        }
        maxTimeoutId = timeoutId = trailingCall = undefined;
        if (trailing || (maxWait !== wait)) {
          lastCalled = now();
          result = func.apply(thisArg, args);
          if (!timeoutId && !maxTimeoutId) {
            args = thisArg = null;
          }
        }
      };

      return function() {
        args = arguments;
        stamp = now();
        thisArg = this;
        trailingCall = trailing && (timeoutId || !leading);

        if (maxWait === false) {
          var leadingCall = leading && !timeoutId;
        } else {
          if (!maxTimeoutId && !leading) {
            lastCalled = stamp;
          }
          var remaining = maxWait - (stamp - lastCalled),
              isCalled = remaining <= 0;

          if (isCalled) {
            if (maxTimeoutId) {
              maxTimeoutId = clearTimeout(maxTimeoutId);
            }
            lastCalled = stamp;
            result = func.apply(thisArg, args);
          }
          else if (!maxTimeoutId) {
            maxTimeoutId = setTimeout(maxDelayed, remaining);
          }
        }
        if (isCalled && timeoutId) {
          timeoutId = clearTimeout(timeoutId);
        }
        else if (!timeoutId && wait !== maxWait) {
          timeoutId = setTimeout(delayed, wait);
        }
        if (leadingCall) {
          isCalled = true;
          result = func.apply(thisArg, args);
        }
        if (isCalled && !timeoutId && !maxTimeoutId) {
          args = thisArg = null;
        }
        return result;
      };
    }

    /**
     * Defers executing the `func` function until the current call stack has cleared.
     * Additional arguments will be provided to `func` when it is invoked.
     *
     * @static
     * @memberOf _
     * @category Functions
     * @param {Function} func The function to defer.
     * @param {...*} [arg] Arguments to invoke the function with.
     * @returns {number} Returns the timer id.
     * @example
     *
     * _.defer(function(text) { console.log(text); }, 'deferred');
     * // logs 'deferred' after one or more milliseconds
     */
    function defer(func) {
      if (!isFunction(func)) {
        throw new TypeError;
      }
      var args = slice(arguments, 1);
      return setTimeout(function() { func.apply(undefined, args); }, 1);
    }

    /**
     * Executes the `func` function after `wait` milliseconds. Additional arguments
     * will be provided to `func` when it is invoked.
     *
     * @static
     * @memberOf _
     * @category Functions
     * @param {Function} func The function to delay.
     * @param {number} wait The number of milliseconds to delay execution.
     * @param {...*} [arg] Arguments to invoke the function with.
     * @returns {number} Returns the timer id.
     * @example
     *
     * _.delay(function(text) { console.log(text); }, 1000, 'later');
     * // => logs 'later' after one second
     */
    function delay(func, wait) {
      if (!isFunction(func)) {
        throw new TypeError;
      }
      var args = slice(arguments, 2);
      return setTimeout(function() { func.apply(undefined, args); }, wait);
    }

    /**
     * Creates a function that memoizes the result of `func`. If `resolver` is
     * provided it will be used to determine the cache key for storing the result
     * based on the arguments provided to the memoized function. By default, the
     * first argument provided to the memoized function is used as the cache key.
     * The `func` is executed with the `this` binding of the memoized function.
     * The result cache is exposed as the `cache` property on the memoized function.
     *
     * @static
     * @memberOf _
     * @category Functions
     * @param {Function} func The function to have its output memoized.
     * @param {Function} [resolver] A function used to resolve the cache key.
     * @returns {Function} Returns the new memoizing function.
     * @example
     *
     * var fibonacci = _.memoize(function(n) {
     *   return n < 2 ? n : fibonacci(n - 1) + fibonacci(n - 2);
     * });
     *
     * fibonacci(9)
     * // => 34
     *
     * var data = {
     *   'fred': { 'name': 'fred', 'age': 40 },
     *   'pebbles': { 'name': 'pebbles', 'age': 1 }
     * };
     *
     * // modifying the result cache
     * var get = _.memoize(function(name) { return data[name]; }, _.identity);
     * get('pebbles');
     * // => { 'name': 'pebbles', 'age': 1 }
     *
     * get.cache.pebbles.name = 'penelope';
     * get('pebbles');
     * // => { 'name': 'penelope', 'age': 1 }
     */
    function memoize(func, resolver) {
      if (!isFunction(func)) {
        throw new TypeError;
      }
      var memoized = function() {
        var cache = memoized.cache,
            key = resolver ? resolver.apply(this, arguments) : keyPrefix + arguments[0];

        return hasOwnProperty.call(cache, key)
          ? cache[key]
          : (cache[key] = func.apply(this, arguments));
      }
      memoized.cache = {};
      return memoized;
    }

    /**
     * Creates a function that is restricted to execute `func` once. Repeat calls to
     * the function will return the value of the first call. The `func` is executed
     * with the `this` binding of the created function.
     *
     * @static
     * @memberOf _
     * @category Functions
     * @param {Function} func The function to restrict.
     * @returns {Function} Returns the new restricted function.
     * @example
     *
     * var initialize = _.once(createApplication);
     * initialize();
     * initialize();
     * // `initialize` executes `createApplication` once
     */
    function once(func) {
      var ran,
          result;

      if (!isFunction(func)) {
        throw new TypeError;
      }
      return function() {
        if (ran) {
          return result;
        }
        ran = true;
        result = func.apply(this, arguments);

        // clear the `func` variable so the function may be garbage collected
        func = null;
        return result;
      };
    }

    /**
     * Creates a function that, when called, invokes `func` with any additional
     * `partial` arguments prepended to those provided to the new function. This
     * method is similar to `_.bind` except it does **not** alter the `this` binding.
     *
     * @static
     * @memberOf _
     * @category Functions
     * @param {Function} func The function to partially apply arguments to.
     * @param {...*} [arg] Arguments to be partially applied.
     * @returns {Function} Returns the new partially applied function.
     * @example
     *
     * var greet = function(greeting, name) { return greeting + ' ' + name; };
     * var hi = _.partial(greet, 'hi');
     * hi('fred');
     * // => 'hi fred'
     */
    function partial(func) {
      return createWrapper(func, 16, slice(arguments, 1));
    }

    /**
     * This method is like `_.partial` except that `partial` arguments are
     * appended to those provided to the new function.
     *
     * @static
     * @memberOf _
     * @category Functions
     * @param {Function} func The function to partially apply arguments to.
     * @param {...*} [arg] Arguments to be partially applied.
     * @returns {Function} Returns the new partially applied function.
     * @example
     *
     * var defaultsDeep = _.partialRight(_.merge, _.defaults);
     *
     * var options = {
     *   'variable': 'data',
     *   'imports': { 'jq': $ }
     * };
     *
     * defaultsDeep(options, _.templateSettings);
     *
     * options.variable
     * // => 'data'
     *
     * options.imports
     * // => { '_': _, 'jq': $ }
     */
    function partialRight(func) {
      return createWrapper(func, 32, null, slice(arguments, 1));
    }

    /**
     * Creates a function that, when executed, will only call the `func` function
     * at most once per every `wait` milliseconds. Provide an options object to
     * indicate that `func` should be invoked on the leading and/or trailing edge
     * of the `wait` timeout. Subsequent calls to the throttled function will
     * return the result of the last `func` call.
     *
     * Note: If `leading` and `trailing` options are `true` `func` will be called
     * on the trailing edge of the timeout only if the the throttled function is
     * invoked more than once during the `wait` timeout.
     *
     * @static
     * @memberOf _
     * @category Functions
     * @param {Function} func The function to throttle.
     * @param {number} wait The number of milliseconds to throttle executions to.
     * @param {Object} [options] The options object.
     * @param {boolean} [options.leading=true] Specify execution on the leading edge of the timeout.
     * @param {boolean} [options.trailing=true] Specify execution on the trailing edge of the timeout.
     * @returns {Function} Returns the new throttled function.
     * @example
     *
     * // avoid excessively updating the position while scrolling
     * var throttled = _.throttle(updatePosition, 100);
     * jQuery(window).on('scroll', throttled);
     *
     * // execute `renewToken` when the click event is fired, but not more than once every 5 minutes
     * jQuery('.interactive').on('click', _.throttle(renewToken, 300000, {
     *   'trailing': false
     * }));
     */
    function throttle(func, wait, options) {
      var leading = true,
          trailing = true;

      if (!isFunction(func)) {
        throw new TypeError;
      }
      if (options === false) {
        leading = false;
      } else if (isObject(options)) {
        leading = 'leading' in options ? options.leading : leading;
        trailing = 'trailing' in options ? options.trailing : trailing;
      }
      debounceOptions.leading = leading;
      debounceOptions.maxWait = wait;
      debounceOptions.trailing = trailing;

      return debounce(func, wait, debounceOptions);
    }

    /**
     * Creates a function that provides `value` to the wrapper function as its
     * first argument. Additional arguments provided to the function are appended
     * to those provided to the wrapper function. The wrapper is executed with
     * the `this` binding of the created function.
     *
     * @static
     * @memberOf _
     * @category Functions
     * @param {*} value The value to wrap.
     * @param {Function} wrapper The wrapper function.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var p = _.wrap(_.escape, function(func, text) {
     *   return '<p>' + func(text) + '</p>';
     * });
     *
     * p('Fred, Wilma, & Pebbles');
     * // => '<p>Fred, Wilma, &amp; Pebbles</p>'
     */
    function wrap(value, wrapper) {
      return createWrapper(wrapper, 16, [value]);
    }

    /*--------------------------------------------------------------------------*/

    /**
     * Creates a function that returns `value`.
     *
     * @static
     * @memberOf _
     * @category Utilities
     * @param {*} value The value to return from the new function.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var object = { 'name': 'fred' };
     * var getter = _.constant(object);
     * getter() === object;
     * // => true
     */
    function constant(value) {
      return function() {
        return value;
      };
    }

    /**
     * Produces a callback bound to an optional `thisArg`. If `func` is a property
     * name the created callback will return the property value for a given element.
     * If `func` is an object the created callback will return `true` for elements
     * that contain the equivalent object properties, otherwise it will return `false`.
     *
     * @static
     * @memberOf _
     * @category Utilities
     * @param {*} [func=identity] The value to convert to a callback.
     * @param {*} [thisArg] The `this` binding of the created callback.
     * @param {number} [argCount] The number of arguments the callback accepts.
     * @returns {Function} Returns a callback function.
     * @example
     *
     * var characters = [
     *   { 'name': 'barney', 'age': 36 },
     *   { 'name': 'fred',   'age': 40 }
     * ];
     *
     * // wrap to create custom callback shorthands
     * _.createCallback = _.wrap(_.createCallback, function(func, callback, thisArg) {
     *   var match = /^(.+?)__([gl]t)(.+)$/.exec(callback);
     *   return !match ? func(callback, thisArg) : function(object) {
     *     return match[2] == 'gt' ? object[match[1]] > match[3] : object[match[1]] < match[3];
     *   };
     * });
     *
     * _.filter(characters, 'age__gt38');
     * // => [{ 'name': 'fred', 'age': 40 }]
     */
    function createCallback(func, thisArg, argCount) {
      var type = typeof func;
      if (func == null || type == 'function') {
        return baseCreateCallback(func, thisArg, argCount);
      }
      // handle "_.pluck" style callback shorthands
      if (type != 'object') {
        return property(func);
      }
      var props = keys(func),
          key = props[0],
          a = func[key];

      // handle "_.where" style callback shorthands
      if (props.length == 1 && a === a && !isObject(a)) {
        // fast path the common case of providing an object with a single
        // property containing a primitive value
        return function(object) {
          var b = object[key];
          return a === b && (a !== 0 || (1 / a == 1 / b));
        };
      }
      return function(object) {
        var length = props.length,
            result = false;

        while (length--) {
          if (!(result = baseIsEqual(object[props[length]], func[props[length]], null, true))) {
            break;
          }
        }
        return result;
      };
    }

    /**
     * Converts the characters `&`, `<`, `>`, `"`, and `'` in `string` to their
     * corresponding HTML entities.
     *
     * @static
     * @memberOf _
     * @category Utilities
     * @param {string} string The string to escape.
     * @returns {string} Returns the escaped string.
     * @example
     *
     * _.escape('Fred, Wilma, & Pebbles');
     * // => 'Fred, Wilma, &amp; Pebbles'
     */
    function escape(string) {
      return string == null ? '' : String(string).replace(reUnescapedHtml, escapeHtmlChar);
    }

    /**
     * This method returns the first argument provided to it.
     *
     * @static
     * @memberOf _
     * @category Utilities
     * @param {*} value Any value.
     * @returns {*} Returns `value`.
     * @example
     *
     * var object = { 'name': 'fred' };
     * _.identity(object) === object;
     * // => true
     */
    function identity(value) {
      return value;
    }

    /**
     * Adds function properties of a source object to the destination object.
     * If `object` is a function methods will be added to its prototype as well.
     *
     * @static
     * @memberOf _
     * @category Utilities
     * @param {Function|Object} [object=lodash] object The destination object.
     * @param {Object} source The object of functions to add.
     * @param {Object} [options] The options object.
     * @param {boolean} [options.chain=true] Specify whether the functions added are chainable.
     * @example
     *
     * function capitalize(string) {
     *   return string.charAt(0).toUpperCase() + string.slice(1).toLowerCase();
     * }
     *
     * _.mixin({ 'capitalize': capitalize });
     * _.capitalize('fred');
     * // => 'Fred'
     *
     * _('fred').capitalize().value();
     * // => 'Fred'
     *
     * _.mixin({ 'capitalize': capitalize }, { 'chain': false });
     * _('fred').capitalize();
     * // => 'Fred'
     */
    function mixin(object, source, options) {
      var chain = true,
          methodNames = source && functions(source);

      if (!source || (!options && !methodNames.length)) {
        if (options == null) {
          options = source;
        }
        ctor = lodashWrapper;
        source = object;
        object = lodash;
        methodNames = functions(source);
      }
      if (options === false) {
        chain = false;
      } else if (isObject(options) && 'chain' in options) {
        chain = options.chain;
      }
      var ctor = object,
          isFunc = isFunction(ctor);

      forEach(methodNames, function(methodName) {
        var func = object[methodName] = source[methodName];
        if (isFunc) {
          ctor.prototype[methodName] = function() {
            var chainAll = this.__chain__,
                value = this.__wrapped__,
                args = [value];

            push.apply(args, arguments);
            var result = func.apply(object, args);
            if (chain || chainAll) {
              if (value === result && isObject(result)) {
                return this;
              }
              result = new ctor(result);
              result.__chain__ = chainAll;
            }
            return result;
          };
        }
      });
    }

    /**
     * Reverts the '_' variable to its previous value and returns a reference to
     * the `lodash` function.
     *
     * @static
     * @memberOf _
     * @category Utilities
     * @returns {Function} Returns the `lodash` function.
     * @example
     *
     * var lodash = _.noConflict();
     */
    function noConflict() {
      context._ = oldDash;
      return this;
    }

    /**
     * A no-operation function.
     *
     * @static
     * @memberOf _
     * @category Utilities
     * @example
     *
     * var object = { 'name': 'fred' };
     * _.noop(object) === undefined;
     * // => true
     */
    function noop() {
      // no operation performed
    }

    /**
     * Gets the number of milliseconds that have elapsed since the Unix epoch
     * (1 January 1970 00:00:00 UTC).
     *
     * @static
     * @memberOf _
     * @category Utilities
     * @example
     *
     * var stamp = _.now();
     * _.defer(function() { console.log(_.now() - stamp); });
     * // => logs the number of milliseconds it took for the deferred function to be called
     */
    var now = isNative(now = Date.now) && now || function() {
      return new Date().getTime();
    };

    /**
     * Converts the given value into an integer of the specified radix.
     * If `radix` is `undefined` or `0` a `radix` of `10` is used unless the
     * `value` is a hexadecimal, in which case a `radix` of `16` is used.
     *
     * Note: This method avoids differences in native ES3 and ES5 `parseInt`
     * implementations. See http://es5.github.io/#E.
     *
     * @static
     * @memberOf _
     * @category Utilities
     * @param {string} value The value to parse.
     * @param {number} [radix] The radix used to interpret the value to parse.
     * @returns {number} Returns the new integer value.
     * @example
     *
     * _.parseInt('08');
     * // => 8
     */
    var parseInt = nativeParseInt(whitespace + '08') == 8 ? nativeParseInt : function(value, radix) {
      // Firefox < 21 and Opera < 15 follow the ES3 specified implementation of `parseInt`
      return nativeParseInt(isString(value) ? value.replace(reLeadingSpacesAndZeros, '') : value, radix || 0);
    };

    /**
     * Creates a "_.pluck" style function, which returns the `key` value of a
     * given object.
     *
     * @static
     * @memberOf _
     * @category Utilities
     * @param {string} key The name of the property to retrieve.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var characters = [
     *   { 'name': 'fred',   'age': 40 },
     *   { 'name': 'barney', 'age': 36 }
     * ];
     *
     * var getName = _.property('name');
     *
     * _.map(characters, getName);
     * // => ['barney', 'fred']
     *
     * _.sortBy(characters, getName);
     * // => [{ 'name': 'barney', 'age': 36 }, { 'name': 'fred',   'age': 40 }]
     */
    function property(key) {
      return function(object) {
        return object[key];
      };
    }

    /**
     * Produces a random number between `min` and `max` (inclusive). If only one
     * argument is provided a number between `0` and the given number will be
     * returned. If `floating` is truey or either `min` or `max` are floats a
     * floating-point number will be returned instead of an integer.
     *
     * @static
     * @memberOf _
     * @category Utilities
     * @param {number} [min=0] The minimum possible value.
     * @param {number} [max=1] The maximum possible value.
     * @param {boolean} [floating=false] Specify returning a floating-point number.
     * @returns {number} Returns a random number.
     * @example
     *
     * _.random(0, 5);
     * // => an integer between 0 and 5
     *
     * _.random(5);
     * // => also an integer between 0 and 5
     *
     * _.random(5, true);
     * // => a floating-point number between 0 and 5
     *
     * _.random(1.2, 5.2);
     * // => a floating-point number between 1.2 and 5.2
     */
    function random(min, max, floating) {
      var noMin = min == null,
          noMax = max == null;

      if (floating == null) {
        if (typeof min == 'boolean' && noMax) {
          floating = min;
          min = 1;
        }
        else if (!noMax && typeof max == 'boolean') {
          floating = max;
          noMax = true;
        }
      }
      if (noMin && noMax) {
        max = 1;
      }
      min = +min || 0;
      if (noMax) {
        max = min;
        min = 0;
      } else {
        max = +max || 0;
      }
      if (floating || min % 1 || max % 1) {
        var rand = nativeRandom();
        return nativeMin(min + (rand * (max - min + parseFloat('1e-' + ((rand +'').length - 1)))), max);
      }
      return baseRandom(min, max);
    }

    /**
     * Resolves the value of property `key` on `object`. If `key` is a function
     * it will be invoked with the `this` binding of `object` and its result returned,
     * else the property value is returned. If `object` is falsey then `undefined`
     * is returned.
     *
     * @static
     * @memberOf _
     * @category Utilities
     * @param {Object} object The object to inspect.
     * @param {string} key The name of the property to resolve.
     * @returns {*} Returns the resolved value.
     * @example
     *
     * var object = {
     *   'cheese': 'crumpets',
     *   'stuff': function() {
     *     return 'nonsense';
     *   }
     * };
     *
     * _.result(object, 'cheese');
     * // => 'crumpets'
     *
     * _.result(object, 'stuff');
     * // => 'nonsense'
     */
    function result(object, key) {
      if (object) {
        var value = object[key];
        return isFunction(value) ? object[key]() : value;
      }
    }

    /**
     * A micro-templating method that handles arbitrary delimiters, preserves
     * whitespace, and correctly escapes quotes within interpolated code.
     *
     * Note: In the development build, `_.template` utilizes sourceURLs for easier
     * debugging. See http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl
     *
     * For more information on precompiling templates see:
     * http://lodash.com/custom-builds
     *
     * For more information on Chrome extension sandboxes see:
     * http://developer.chrome.com/stable/extensions/sandboxingEval.html
     *
     * @static
     * @memberOf _
     * @category Utilities
     * @param {string} text The template text.
     * @param {Object} data The data object used to populate the text.
     * @param {Object} [options] The options object.
     * @param {RegExp} [options.escape] The "escape" delimiter.
     * @param {RegExp} [options.evaluate] The "evaluate" delimiter.
     * @param {Object} [options.imports] An object to import into the template as local variables.
     * @param {RegExp} [options.interpolate] The "interpolate" delimiter.
     * @param {string} [sourceURL] The sourceURL of the template's compiled source.
     * @param {string} [variable] The data object variable name.
     * @returns {Function|string} Returns a compiled function when no `data` object
     *  is given, else it returns the interpolated text.
     * @example
     *
     * // using the "interpolate" delimiter to create a compiled template
     * var compiled = _.template('hello <%= name %>');
     * compiled({ 'name': 'fred' });
     * // => 'hello fred'
     *
     * // using the "escape" delimiter to escape HTML in data property values
     * _.template('<b><%- value %></b>', { 'value': '<script>' });
     * // => '<b>&lt;script&gt;</b>'
     *
     * // using the "evaluate" delimiter to generate HTML
     * var list = '<% _.forEach(people, function(name) { %><li><%- name %></li><% }); %>';
     * _.template(list, { 'people': ['fred', 'barney'] });
     * // => '<li>fred</li><li>barney</li>'
     *
     * // using the ES6 delimiter as an alternative to the default "interpolate" delimiter
     * _.template('hello ${ name }', { 'name': 'pebbles' });
     * // => 'hello pebbles'
     *
     * // using the internal `print` function in "evaluate" delimiters
     * _.template('<% print("hello " + name); %>!', { 'name': 'barney' });
     * // => 'hello barney!'
     *
     * // using a custom template delimiters
     * _.templateSettings = {
     *   'interpolate': /{{([\s\S]+?)}}/g
     * };
     *
     * _.template('hello {{ name }}!', { 'name': 'mustache' });
     * // => 'hello mustache!'
     *
     * // using the `imports` option to import jQuery
     * var list = '<% jq.each(people, function(name) { %><li><%- name %></li><% }); %>';
     * _.template(list, { 'people': ['fred', 'barney'] }, { 'imports': { 'jq': jQuery } });
     * // => '<li>fred</li><li>barney</li>'
     *
     * // using the `sourceURL` option to specify a custom sourceURL for the template
     * var compiled = _.template('hello <%= name %>', null, { 'sourceURL': '/basic/greeting.jst' });
     * compiled(data);
     * // => find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector
     *
     * // using the `variable` option to ensure a with-statement isn't used in the compiled template
     * var compiled = _.template('hi <%= data.name %>!', null, { 'variable': 'data' });
     * compiled.source;
     * // => function(data) {
     *   var __t, __p = '', __e = _.escape;
     *   __p += 'hi ' + ((__t = ( data.name )) == null ? '' : __t) + '!';
     *   return __p;
     * }
     *
     * // using the `source` property to inline compiled templates for meaningful
     * // line numbers in error messages and a stack trace
     * fs.writeFileSync(path.join(cwd, 'jst.js'), '\
     *   var JST = {\
     *     "main": ' + _.template(mainText).source + '\
     *   };\
     * ');
     */
    function template(text, data, options) {
      // based on John Resig's `tmpl` implementation
      // http://ejohn.org/blog/javascript-micro-templating/
      // and Laura Doktorova's doT.js
      // https://github.com/olado/doT
      var settings = lodash.templateSettings;
      text = String(text || '');

      // avoid missing dependencies when `iteratorTemplate` is not defined
      options = defaults({}, options, settings);

      var imports = defaults({}, options.imports, settings.imports),
          importsKeys = keys(imports),
          importsValues = values(imports);

      var isEvaluating,
          index = 0,
          interpolate = options.interpolate || reNoMatch,
          source = "__p += '";

      // compile the regexp to match each delimiter
      var reDelimiters = RegExp(
        (options.escape || reNoMatch).source + '|' +
        interpolate.source + '|' +
        (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' +
        (options.evaluate || reNoMatch).source + '|$'
      , 'g');

      text.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) {
        interpolateValue || (interpolateValue = esTemplateValue);

        // escape characters that cannot be included in string literals
        source += text.slice(index, offset).replace(reUnescapedString, escapeStringChar);

        // replace delimiters with snippets
        if (escapeValue) {
          source += "' +\n__e(" + escapeValue + ") +\n'";
        }
        if (evaluateValue) {
          isEvaluating = true;
          source += "';\n" + evaluateValue + ";\n__p += '";
        }
        if (interpolateValue) {
          source += "' +\n((__t = (" + interpolateValue + ")) == null ? '' : __t) +\n'";
        }
        index = offset + match.length;

        // the JS engine embedded in Adobe products requires returning the `match`
        // string in order to produce the correct `offset` value
        return match;
      });

      source += "';\n";

      // if `variable` is not specified, wrap a with-statement around the generated
      // code to add the data object to the top of the scope chain
      var variable = options.variable,
          hasVariable = variable;

      if (!hasVariable) {
        variable = 'obj';
        source = 'with (' + variable + ') {\n' + source + '\n}\n';
      }
      // cleanup code by stripping empty strings
      source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source)
        .replace(reEmptyStringMiddle, '$1')
        .replace(reEmptyStringTrailing, '$1;');

      // frame code as the function body
      source = 'function(' + variable + ') {\n' +
        (hasVariable ? '' : variable + ' || (' + variable + ' = {});\n') +
        "var __t, __p = '', __e = _.escape" +
        (isEvaluating
          ? ', __j = Array.prototype.join;\n' +
            "function print() { __p += __j.call(arguments, '') }\n"
          : ';\n'
        ) +
        source +
        'return __p\n}';

      // Use a sourceURL for easier debugging.
      // http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl
      var sourceURL = '\n/*\n//# sourceURL=' + (options.sourceURL || '/lodash/template/source[' + (templateCounter++) + ']') + '\n*/';

      try {
        var result = Function(importsKeys, 'return ' + source + sourceURL).apply(undefined, importsValues);
      } catch(e) {
        e.source = source;
        throw e;
      }
      if (data) {
        return result(data);
      }
      // provide the compiled function's source by its `toString` method, in
      // supported environments, or the `source` property as a convenience for
      // inlining compiled templates during the build process
      result.source = source;
      return result;
    }

    /**
     * Executes the callback `n` times, returning an array of the results
     * of each callback execution. The callback is bound to `thisArg` and invoked
     * with one argument; (index).
     *
     * @static
     * @memberOf _
     * @category Utilities
     * @param {number} n The number of times to execute the callback.
     * @param {Function} callback The function called per iteration.
     * @param {*} [thisArg] The `this` binding of `callback`.
     * @returns {Array} Returns an array of the results of each `callback` execution.
     * @example
     *
     * var diceRolls = _.times(3, _.partial(_.random, 1, 6));
     * // => [3, 6, 4]
     *
     * _.times(3, function(n) { mage.castSpell(n); });
     * // => calls `mage.castSpell(n)` three times, passing `n` of `0`, `1`, and `2` respectively
     *
     * _.times(3, function(n) { this.cast(n); }, mage);
     * // => also calls `mage.castSpell(n)` three times
     */
    function times(n, callback, thisArg) {
      n = (n = +n) > -1 ? n : 0;
      var index = -1,
          result = Array(n);

      callback = baseCreateCallback(callback, thisArg, 1);
      while (++index < n) {
        result[index] = callback(index);
      }
      return result;
    }

    /**
     * The inverse of `_.escape` this method converts the HTML entities
     * `&amp;`, `&lt;`, `&gt;`, `&quot;`, and `&#39;` in `string` to their
     * corresponding characters.
     *
     * @static
     * @memberOf _
     * @category Utilities
     * @param {string} string The string to unescape.
     * @returns {string} Returns the unescaped string.
     * @example
     *
     * _.unescape('Fred, Barney &amp; Pebbles');
     * // => 'Fred, Barney & Pebbles'
     */
    function unescape(string) {
      return string == null ? '' : String(string).replace(reEscapedHtml, unescapeHtmlChar);
    }

    /**
     * Generates a unique ID. If `prefix` is provided the ID will be appended to it.
     *
     * @static
     * @memberOf _
     * @category Utilities
     * @param {string} [prefix] The value to prefix the ID with.
     * @returns {string} Returns the unique ID.
     * @example
     *
     * _.uniqueId('contact_');
     * // => 'contact_104'
     *
     * _.uniqueId();
     * // => '105'
     */
    function uniqueId(prefix) {
      var id = ++idCounter;
      return String(prefix == null ? '' : prefix) + id;
    }

    /*--------------------------------------------------------------------------*/

    /**
     * Creates a `lodash` object that wraps the given value with explicit
     * method chaining enabled.
     *
     * @static
     * @memberOf _
     * @category Chaining
     * @param {*} value The value to wrap.
     * @returns {Object} Returns the wrapper object.
     * @example
     *
     * var characters = [
     *   { 'name': 'barney',  'age': 36 },
     *   { 'name': 'fred',    'age': 40 },
     *   { 'name': 'pebbles', 'age': 1 }
     * ];
     *
     * var youngest = _.chain(characters)
     *     .sortBy('age')
     *     .map(function(chr) { return chr.name + ' is ' + chr.age; })
     *     .first()
     *     .value();
     * // => 'pebbles is 1'
     */
    function chain(value) {
      value = new lodashWrapper(value);
      value.__chain__ = true;
      return value;
    }

    /**
     * Invokes `interceptor` with the `value` as the first argument and then
     * returns `value`. The purpose of this method is to "tap into" a method
     * chain in order to perform operations on intermediate results within
     * the chain.
     *
     * @static
     * @memberOf _
     * @category Chaining
     * @param {*} value The value to provide to `interceptor`.
     * @param {Function} interceptor The function to invoke.
     * @returns {*} Returns `value`.
     * @example
     *
     * _([1, 2, 3, 4])
     *  .tap(function(array) { array.pop(); })
     *  .reverse()
     *  .value();
     * // => [3, 2, 1]
     */
    function tap(value, interceptor) {
      interceptor(value);
      return value;
    }

    /**
     * Enables explicit method chaining on the wrapper object.
     *
     * @name chain
     * @memberOf _
     * @category Chaining
     * @returns {*} Returns the wrapper object.
     * @example
     *
     * var characters = [
     *   { 'name': 'barney', 'age': 36 },
     *   { 'name': 'fred',   'age': 40 }
     * ];
     *
     * // without explicit chaining
     * _(characters).first();
     * // => { 'name': 'barney', 'age': 36 }
     *
     * // with explicit chaining
     * _(characters).chain()
     *   .first()
     *   .pick('age')
     *   .value();
     * // => { 'age': 36 }
     */
    function wrapperChain() {
      this.__chain__ = true;
      return this;
    }

    /**
     * Produces the `toString` result of the wrapped value.
     *
     * @name toString
     * @memberOf _
     * @category Chaining
     * @returns {string} Returns the string result.
     * @example
     *
     * _([1, 2, 3]).toString();
     * // => '1,2,3'
     */
    function wrapperToString() {
      return String(this.__wrapped__);
    }

    /**
     * Extracts the wrapped value.
     *
     * @name valueOf
     * @memberOf _
     * @alias value
     * @category Chaining
     * @returns {*} Returns the wrapped value.
     * @example
     *
     * _([1, 2, 3]).valueOf();
     * // => [1, 2, 3]
     */
    function wrapperValueOf() {
      return this.__wrapped__;
    }

    /*--------------------------------------------------------------------------*/

    // add functions that return wrapped values when chaining
    lodash.after = after;
    lodash.assign = assign;
    lodash.at = at;
    lodash.bind = bind;
    lodash.bindAll = bindAll;
    lodash.bindKey = bindKey;
    lodash.chain = chain;
    lodash.compact = compact;
    lodash.compose = compose;
    lodash.constant = constant;
    lodash.countBy = countBy;
    lodash.create = create;
    lodash.createCallback = createCallback;
    lodash.curry = curry;
    lodash.debounce = debounce;
    lodash.defaults = defaults;
    lodash.defer = defer;
    lodash.delay = delay;
    lodash.difference = difference;
    lodash.filter = filter;
    lodash.flatten = flatten;
    lodash.forEach = forEach;
    lodash.forEachRight = forEachRight;
    lodash.forIn = forIn;
    lodash.forInRight = forInRight;
    lodash.forOwn = forOwn;
    lodash.forOwnRight = forOwnRight;
    lodash.functions = functions;
    lodash.groupBy = groupBy;
    lodash.indexBy = indexBy;
    lodash.initial = initial;
    lodash.intersection = intersection;
    lodash.invert = invert;
    lodash.invoke = invoke;
    lodash.keys = keys;
    lodash.map = map;
    lodash.mapValues = mapValues;
    lodash.max = max;
    lodash.memoize = memoize;
    lodash.merge = merge;
    lodash.min = min;
    lodash.omit = omit;
    lodash.once = once;
    lodash.pairs = pairs;
    lodash.partial = partial;
    lodash.partialRight = partialRight;
    lodash.pick = pick;
    lodash.pluck = pluck;
    lodash.property = property;
    lodash.pull = pull;
    lodash.range = range;
    lodash.reject = reject;
    lodash.remove = remove;
    lodash.rest = rest;
    lodash.shuffle = shuffle;
    lodash.sortBy = sortBy;
    lodash.tap = tap;
    lodash.throttle = throttle;
    lodash.times = times;
    lodash.toArray = toArray;
    lodash.transform = transform;
    lodash.union = union;
    lodash.uniq = uniq;
    lodash.values = values;
    lodash.where = where;
    lodash.without = without;
    lodash.wrap = wrap;
    lodash.xor = xor;
    lodash.zip = zip;
    lodash.zipObject = zipObject;

    // add aliases
    lodash.collect = map;
    lodash.drop = rest;
    lodash.each = forEach;
    lodash.eachRight = forEachRight;
    lodash.extend = assign;
    lodash.methods = functions;
    lodash.object = zipObject;
    lodash.select = filter;
    lodash.tail = rest;
    lodash.unique = uniq;
    lodash.unzip = zip;

    // add functions to `lodash.prototype`
    mixin(lodash);

    /*--------------------------------------------------------------------------*/

    // add functions that return unwrapped values when chaining
    lodash.clone = clone;
    lodash.cloneDeep = cloneDeep;
    lodash.contains = contains;
    lodash.escape = escape;
    lodash.every = every;
    lodash.find = find;
    lodash.findIndex = findIndex;
    lodash.findKey = findKey;
    lodash.findLast = findLast;
    lodash.findLastIndex = findLastIndex;
    lodash.findLastKey = findLastKey;
    lodash.has = has;
    lodash.identity = identity;
    lodash.indexOf = indexOf;
    lodash.isArguments = isArguments;
    lodash.isArray = isArray;
    lodash.isBoolean = isBoolean;
    lodash.isDate = isDate;
    lodash.isElement = isElement;
    lodash.isEmpty = isEmpty;
    lodash.isEqual = isEqual;
    lodash.isFinite = isFinite;
    lodash.isFunction = isFunction;
    lodash.isNaN = isNaN;
    lodash.isNull = isNull;
    lodash.isNumber = isNumber;
    lodash.isObject = isObject;
    lodash.isPlainObject = isPlainObject;
    lodash.isRegExp = isRegExp;
    lodash.isString = isString;
    lodash.isUndefined = isUndefined;
    lodash.lastIndexOf = lastIndexOf;
    lodash.mixin = mixin;
    lodash.noConflict = noConflict;
    lodash.noop = noop;
    lodash.now = now;
    lodash.parseInt = parseInt;
    lodash.random = random;
    lodash.reduce = reduce;
    lodash.reduceRight = reduceRight;
    lodash.result = result;
    lodash.runInContext = runInContext;
    lodash.size = size;
    lodash.some = some;
    lodash.sortedIndex = sortedIndex;
    lodash.template = template;
    lodash.unescape = unescape;
    lodash.uniqueId = uniqueId;

    // add aliases
    lodash.all = every;
    lodash.any = some;
    lodash.detect = find;
    lodash.findWhere = find;
    lodash.foldl = reduce;
    lodash.foldr = reduceRight;
    lodash.include = contains;
    lodash.inject = reduce;

    mixin(function() {
      var source = {}
      forOwn(lodash, function(func, methodName) {
        if (!lodash.prototype[methodName]) {
          source[methodName] = func;
        }
      });
      return source;
    }(), false);

    /*--------------------------------------------------------------------------*/

    // add functions capable of returning wrapped and unwrapped values when chaining
    lodash.first = first;
    lodash.last = last;
    lodash.sample = sample;

    // add aliases
    lodash.take = first;
    lodash.head = first;

    forOwn(lodash, function(func, methodName) {
      var callbackable = methodName !== 'sample';
      if (!lodash.prototype[methodName]) {
        lodash.prototype[methodName]= function(n, guard) {
          var chainAll = this.__chain__,
              result = func(this.__wrapped__, n, guard);

          return !chainAll && (n == null || (guard && !(callbackable && typeof n == 'function')))
            ? result
            : new lodashWrapper(result, chainAll);
        };
      }
    });

    /*--------------------------------------------------------------------------*/

    /**
     * The semantic version number.
     *
     * @static
     * @memberOf _
     * @type string
     */
    lodash.VERSION = '2.4.1';

    // add "Chaining" functions to the wrapper
    lodash.prototype.chain = wrapperChain;
    lodash.prototype.toString = wrapperToString;
    lodash.prototype.value = wrapperValueOf;
    lodash.prototype.valueOf = wrapperValueOf;

    // add `Array` functions that return unwrapped values
    forEach(['join', 'pop', 'shift'], function(methodName) {
      var func = arrayRef[methodName];
      lodash.prototype[methodName] = function() {
        var chainAll = this.__chain__,
            result = func.apply(this.__wrapped__, arguments);

        return chainAll
          ? new lodashWrapper(result, chainAll)
          : result;
      };
    });

    // add `Array` functions that return the existing wrapped value
    forEach(['push', 'reverse', 'sort', 'unshift'], function(methodName) {
      var func = arrayRef[methodName];
      lodash.prototype[methodName] = function() {
        func.apply(this.__wrapped__, arguments);
        return this;
      };
    });

    // add `Array` functions that return new wrapped values
    forEach(['concat', 'slice', 'splice'], function(methodName) {
      var func = arrayRef[methodName];
      lodash.prototype[methodName] = function() {
        return new lodashWrapper(func.apply(this.__wrapped__, arguments), this.__chain__);
      };
    });

    return lodash;
  }

  /*--------------------------------------------------------------------------*/

  // expose Lo-Dash
  var _ = runInContext();

  // some AMD build optimizers like r.js check for condition patterns like the following:
  if (typeof define == 'function' && typeof define.amd == 'object' && define.amd) {
    // Expose Lo-Dash to the global object even when an AMD loader is present in
    // case Lo-Dash is loaded with a RequireJS shim config.
    // See http://requirejs.org/docs/api.html#config-shim
    root._ = _;

    // define as an anonymous module so, through path mapping, it can be
    // referenced as the "underscore" module
    define(function() {
      return _;
    });
  }
  // check for `exports` after `define` in case a build optimizer adds an `exports` object
  else if (freeExports && freeModule) {
    // in Node.js or RingoJS
    if (moduleExports) {
      (freeModule.exports = _)._ = _;
    }
    // in Narwhal or Rhino -require
    else {
      freeExports._ = _;
    }
  }
  else {
    // in a browser or Rhino
    root._ = _;
  }
}.call(this));

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],62:[function(require,module,exports){
module.exports={
  "name": "cheerio",
  "version": "0.18.0",
  "description": "Tiny, fast, and elegant implementation of core jQuery designed specifically for the server",
  "author": {
    "name": "Matt Mueller",
    "email": "mattmuelle@gmail.com",
    "url": "mat.io"
  },
  "keywords": [
    "htmlparser",
    "jquery",
    "selector",
    "scraper",
    "parser",
    "html"
  ],
  "repository": {
    "type": "git",
    "url": "git://github.com/cheeriojs/cheerio.git"
  },
  "main": "./index.js",
  "engines": {
    "node": ">= 0.6"
  },
  "dependencies": {
    "CSSselect": "^0.4.1",
    "dom-serializer": "~0.0.0",
    "entities": "~1.1.1",
    "htmlparser2": "~3.8.1",
    "lodash": "^2.4.1"
  },
  "devDependencies": {
    "benchmark": "~1.0.0",
    "coveralls": "~2.10",
    "expect.js": "~0.3.1",
    "istanbul": "~0.2",
    "jsdom": "~0.8.9",
    "jshint": "~2.5.1",
    "mocha": "*",
    "xyz": "~0.4.0"
  },
  "scripts": {
    "test": "make test"
  },
  "gitHead": "c4f52db9d0e2011a968ba097c85f434f3a05b7f0",
  "bugs": {
    "url": "https://github.com/cheeriojs/cheerio/issues"
  },
  "homepage": "https://github.com/cheeriojs/cheerio",
  "_id": "cheerio@0.18.0",
  "_shasum": "4e1c06377e725b740e996e0dfec353863de677fa",
  "_from": "cheerio@^0.18.0",
  "_npmVersion": "2.1.3",
  "_nodeVersion": "0.10.31",
  "_npmUser": {
    "name": "jugglinmike",
    "email": "mike@mikepennisi.com"
  },
  "maintainers": [
    {
      "name": "mattmueller",
      "email": "mattmuelle@gmail.com"
    },
    {
      "name": "davidchambers",
      "email": "dc@davidchambers.me"
    },
    {
      "name": "jugglinmike",
      "email": "mike@mikepennisi.com"
    }
  ],
  "dist": {
    "shasum": "4e1c06377e725b740e996e0dfec353863de677fa",
    "tarball": "http://registry.npmjs.org/cheerio/-/cheerio-0.18.0.tgz"
  },
  "directories": {},
  "_resolved": "https://registry.npmjs.org/cheerio/-/cheerio-0.18.0.tgz",
  "readme": "ERROR: No README data found!"
}

},{}],63:[function(require,module,exports){
(function (global){
/*
  Copyright (C) 2012-2014 Yusuke Suzuki <utatane.tea@gmail.com>
  Copyright (C) 2015 Ingvar Stepanyan <me@rreverser.com>
  Copyright (C) 2014 Ivan Nikulin <ifaaan@gmail.com>
  Copyright (C) 2012-2013 Michael Ficarra <escodegen.copyright@michael.ficarra.me>
  Copyright (C) 2012-2013 Mathias Bynens <mathias@qiwi.be>
  Copyright (C) 2013 Irakli Gozalishvili <rfobic@gmail.com>
  Copyright (C) 2012 Robert Gust-Bardon <donate@robert.gust-bardon.org>
  Copyright (C) 2012 John Freeman <jfreeman08@gmail.com>
  Copyright (C) 2011-2012 Ariya Hidayat <ariya.hidayat@gmail.com>
  Copyright (C) 2012 Joost-Wim Boekesteijn <joost-wim@boekesteijn.nl>
  Copyright (C) 2012 Kris Kowal <kris.kowal@cixar.com>
  Copyright (C) 2012 Arpad Borsos <arpad.borsos@googlemail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*global exports:true, require:true, global:true*/
(function () {
    'use strict';

    var Syntax,
        Precedence,
        BinaryPrecedence,
        SourceNode,
        estraverse,
        esutils,
        isArray,
        base,
        indent,
        json,
        renumber,
        hexadecimal,
        quotes,
        escapeless,
        newline,
        space,
        parentheses,
        semicolons,
        safeConcatenation,
        directive,
        extra,
        parse,
        sourceMap,
        sourceCode,
        preserveBlankLines,
        FORMAT_MINIFY,
        FORMAT_DEFAULTS;

    estraverse = require('estraverse');
    esutils = require('esutils');

    Syntax = estraverse.Syntax;

    // Generation is done by generateExpression.
    function isExpression(node) {
        return CodeGenerator.Expression.hasOwnProperty(node.type);
    }

    // Generation is done by generateStatement.
    function isStatement(node) {
        return CodeGenerator.Statement.hasOwnProperty(node.type);
    }

    Precedence = {
        Sequence: 0,
        Yield: 1,
        Await: 1,
        Assignment: 1,
        Conditional: 2,
        ArrowFunction: 2,
        LogicalOR: 3,
        LogicalAND: 4,
        BitwiseOR: 5,
        BitwiseXOR: 6,
        BitwiseAND: 7,
        Equality: 8,
        Relational: 9,
        BitwiseSHIFT: 10,
        Additive: 11,
        Multiplicative: 12,
        Unary: 13,
        Postfix: 14,
        Call: 15,
        New: 16,
        TaggedTemplate: 17,
        Member: 18,
        Primary: 19
    };

    BinaryPrecedence = {
        '||': Precedence.LogicalOR,
        '&&': Precedence.LogicalAND,
        '|': Precedence.BitwiseOR,
        '^': Precedence.BitwiseXOR,
        '&': Precedence.BitwiseAND,
        '==': Precedence.Equality,
        '!=': Precedence.Equality,
        '===': Precedence.Equality,
        '!==': Precedence.Equality,
        'is': Precedence.Equality,
        'isnt': Precedence.Equality,
        '<': Precedence.Relational,
        '>': Precedence.Relational,
        '<=': Precedence.Relational,
        '>=': Precedence.Relational,
        'in': Precedence.Relational,
        'instanceof': Precedence.Relational,
        '<<': Precedence.BitwiseSHIFT,
        '>>': Precedence.BitwiseSHIFT,
        '>>>': Precedence.BitwiseSHIFT,
        '+': Precedence.Additive,
        '-': Precedence.Additive,
        '*': Precedence.Multiplicative,
        '%': Precedence.Multiplicative,
        '/': Precedence.Multiplicative
    };

    //Flags
    var F_ALLOW_IN = 1,
        F_ALLOW_CALL = 1 << 1,
        F_ALLOW_UNPARATH_NEW = 1 << 2,
        F_FUNC_BODY = 1 << 3,
        F_DIRECTIVE_CTX = 1 << 4,
        F_SEMICOLON_OPT = 1 << 5;

    //Expression flag sets
    //NOTE: Flag order:
    // F_ALLOW_IN
    // F_ALLOW_CALL
    // F_ALLOW_UNPARATH_NEW
    var E_FTT = F_ALLOW_CALL | F_ALLOW_UNPARATH_NEW,
        E_TTF = F_ALLOW_IN | F_ALLOW_CALL,
        E_TTT = F_ALLOW_IN | F_ALLOW_CALL | F_ALLOW_UNPARATH_NEW,
        E_TFF = F_ALLOW_IN,
        E_FFT = F_ALLOW_UNPARATH_NEW,
        E_TFT = F_ALLOW_IN | F_ALLOW_UNPARATH_NEW;

    //Statement flag sets
    //NOTE: Flag order:
    // F_ALLOW_IN
    // F_FUNC_BODY
    // F_DIRECTIVE_CTX
    // F_SEMICOLON_OPT
    var S_TFFF = F_ALLOW_IN,
        S_TFFT = F_ALLOW_IN | F_SEMICOLON_OPT,
        S_FFFF = 0x00,
        S_TFTF = F_ALLOW_IN | F_DIRECTIVE_CTX,
        S_TTFF = F_ALLOW_IN | F_FUNC_BODY;

    function getDefaultOptions() {
        // default options
        return {
            indent: null,
            base: null,
            parse: null,
            comment: false,
            format: {
                indent: {
                    style: '    ',
                    base: 0,
                    adjustMultilineComment: false
                },
                newline: '\n',
                space: ' ',
                json: false,
                renumber: false,
                hexadecimal: false,
                quotes: 'single',
                escapeless: false,
                compact: false,
                parentheses: true,
                semicolons: true,
                safeConcatenation: false,
                preserveBlankLines: false
            },
            moz: {
                comprehensionExpressionStartsWithAssignment: false,
                starlessGenerator: false
            },
            sourceMap: null,
            sourceMapRoot: null,
            sourceMapWithCode: false,
            directive: false,
            raw: true,
            verbatim: null,
            sourceCode: null
        };
    }

    function stringRepeat(str, num) {
        var result = '';

        for (num |= 0; num > 0; num >>>= 1, str += str) {
            if (num & 1) {
                result += str;
            }
        }

        return result;
    }

    isArray = Array.isArray;
    if (!isArray) {
        isArray = function isArray(array) {
            return Object.prototype.toString.call(array) === '[object Array]';
        };
    }

    function hasLineTerminator(str) {
        return (/[\r\n]/g).test(str);
    }

    function endsWithLineTerminator(str) {
        var len = str.length;
        return len && esutils.code.isLineTerminator(str.charCodeAt(len - 1));
    }

    function merge(target, override) {
        var key;
        for (key in override) {
            if (override.hasOwnProperty(key)) {
                target[key] = override[key];
            }
        }
        return target;
    }

    function updateDeeply(target, override) {
        var key, val;

        function isHashObject(target) {
            return typeof target === 'object' && target instanceof Object && !(target instanceof RegExp);
        }

        for (key in override) {
            if (override.hasOwnProperty(key)) {
                val = override[key];
                if (isHashObject(val)) {
                    if (isHashObject(target[key])) {
                        updateDeeply(target[key], val);
                    } else {
                        target[key] = updateDeeply({}, val);
                    }
                } else {
                    target[key] = val;
                }
            }
        }
        return target;
    }

    function generateNumber(value) {
        var result, point, temp, exponent, pos;

        if (value !== value) {
            throw new Error('Numeric literal whose value is NaN');
        }
        if (value < 0 || (value === 0 && 1 / value < 0)) {
            throw new Error('Numeric literal whose value is negative');
        }

        if (value === 1 / 0) {
            return json ? 'null' : renumber ? '1e400' : '1e+400';
        }

        result = '' + value;
        if (!renumber || result.length < 3) {
            return result;
        }

        point = result.indexOf('.');
        if (!json && result.charCodeAt(0) === 0x30  /* 0 */ && point === 1) {
            point = 0;
            result = result.slice(1);
        }
        temp = result;
        result = result.replace('e+', 'e');
        exponent = 0;
        if ((pos = temp.indexOf('e')) > 0) {
            exponent = +temp.slice(pos + 1);
            temp = temp.slice(0, pos);
        }
        if (point >= 0) {
            exponent -= temp.length - point - 1;
            temp = +(temp.slice(0, point) + temp.slice(point + 1)) + '';
        }
        pos = 0;
        while (temp.charCodeAt(temp.length + pos - 1) === 0x30  /* 0 */) {
            --pos;
        }
        if (pos !== 0) {
            exponent -= pos;
            temp = temp.slice(0, pos);
        }
        if (exponent !== 0) {
            temp += 'e' + exponent;
        }
        if ((temp.length < result.length ||
                    (hexadecimal && value > 1e12 && Math.floor(value) === value && (temp = '0x' + value.toString(16)).length < result.length)) &&
                +temp === value) {
            result = temp;
        }

        return result;
    }

    // Generate valid RegExp expression.
    // This function is based on https://github.com/Constellation/iv Engine

    function escapeRegExpCharacter(ch, previousIsBackslash) {
        // not handling '\' and handling \u2028 or \u2029 to unicode escape sequence
        if ((ch & ~1) === 0x2028) {
            return (previousIsBackslash ? 'u' : '\\u') + ((ch === 0x2028) ? '2028' : '2029');
        } else if (ch === 10 || ch === 13) {  // \n, \r
            return (previousIsBackslash ? '' : '\\') + ((ch === 10) ? 'n' : 'r');
        }
        return String.fromCharCode(ch);
    }

    function generateRegExp(reg) {
        var match, result, flags, i, iz, ch, characterInBrack, previousIsBackslash;

        result = reg.toString();

        if (reg.source) {
            // extract flag from toString result
            match = result.match(/\/([^/]*)$/);
            if (!match) {
                return result;
            }

            flags = match[1];
            result = '';

            characterInBrack = false;
            previousIsBackslash = false;
            for (i = 0, iz = reg.source.length; i < iz; ++i) {
                ch = reg.source.charCodeAt(i);

                if (!previousIsBackslash) {
                    if (characterInBrack) {
                        if (ch === 93) {  // ]
                            characterInBrack = false;
                        }
                    } else {
                        if (ch === 47) {  // /
                            result += '\\';
                        } else if (ch === 91) {  // [
                            characterInBrack = true;
                        }
                    }
                    result += escapeRegExpCharacter(ch, previousIsBackslash);
                    previousIsBackslash = ch === 92;  // \
                } else {
                    // if new RegExp("\\\n') is provided, create /\n/
                    result += escapeRegExpCharacter(ch, previousIsBackslash);
                    // prevent like /\\[/]/
                    previousIsBackslash = false;
                }
            }

            return '/' + result + '/' + flags;
        }

        return result;
    }

    function escapeAllowedCharacter(code, next) {
        var hex;

        if (code === 0x08  /* \b */) {
            return '\\b';
        }

        if (code === 0x0C  /* \f */) {
            return '\\f';
        }

        if (code === 0x09  /* \t */) {
            return '\\t';
        }

        hex = code.toString(16).toUpperCase();
        if (json || code > 0xFF) {
            return '\\u' + '0000'.slice(hex.length) + hex;
        } else if (code === 0x0000 && !esutils.code.isDecimalDigit(next)) {
            return '\\0';
        } else if (code === 0x000B  /* \v */) { // '\v'
            return '\\x0B';
        } else {
            return '\\x' + '00'.slice(hex.length) + hex;
        }
    }

    function escapeDisallowedCharacter(code) {
        if (code === 0x5C  /* \ */) {
            return '\\\\';
        }

        if (code === 0x0A  /* \n */) {
            return '\\n';
        }

        if (code === 0x0D  /* \r */) {
            return '\\r';
        }

        if (code === 0x2028) {
            return '\\u2028';
        }

        if (code === 0x2029) {
            return '\\u2029';
        }

        throw new Error('Incorrectly classified character');
    }

    function escapeDirective(str) {
        var i, iz, code, quote;

        quote = quotes === 'double' ? '"' : '\'';
        for (i = 0, iz = str.length; i < iz; ++i) {
            code = str.charCodeAt(i);
            if (code === 0x27  /* ' */) {
                quote = '"';
                break;
            } else if (code === 0x22  /* " */) {
                quote = '\'';
                break;
            } else if (code === 0x5C  /* \ */) {
                ++i;
            }
        }

        return quote + str + quote;
    }

    function escapeString(str) {
        var result = '', i, len, code, singleQuotes = 0, doubleQuotes = 0, single, quote;

        for (i = 0, len = str.length; i < len; ++i) {
            code = str.charCodeAt(i);
            if (code === 0x27  /* ' */) {
                ++singleQuotes;
            } else if (code === 0x22  /* " */) {
                ++doubleQuotes;
            } else if (code === 0x2F  /* / */ && json) {
                result += '\\';
            } else if (esutils.code.isLineTerminator(code) || code === 0x5C  /* \ */) {
                result += escapeDisallowedCharacter(code);
                continue;
            } else if ((json && code < 0x20  /* SP */) || !(json || escapeless || (code >= 0x20  /* SP */ && code <= 0x7E  /* ~ */))) {
                result += escapeAllowedCharacter(code, str.charCodeAt(i + 1));
                continue;
            }
            result += String.fromCharCode(code);
        }

        single = !(quotes === 'double' || (quotes === 'auto' && doubleQuotes < singleQuotes));
        quote = single ? '\'' : '"';

        if (!(single ? singleQuotes : doubleQuotes)) {
            return quote + result + quote;
        }

        str = result;
        result = quote;

        for (i = 0, len = str.length; i < len; ++i) {
            code = str.charCodeAt(i);
            if ((code === 0x27  /* ' */ && single) || (code === 0x22  /* " */ && !single)) {
                result += '\\';
            }
            result += String.fromCharCode(code);
        }

        return result + quote;
    }

    /**
     * flatten an array to a string, where the array can contain
     * either strings or nested arrays
     */
    function flattenToString(arr) {
        var i, iz, elem, result = '';
        for (i = 0, iz = arr.length; i < iz; ++i) {
            elem = arr[i];
            result += isArray(elem) ? flattenToString(elem) : elem;
        }
        return result;
    }

    /**
     * convert generated to a SourceNode when source maps are enabled.
     */
    function toSourceNodeWhenNeeded(generated, node) {
        if (!sourceMap) {
            // with no source maps, generated is either an
            // array or a string.  if an array, flatten it.
            // if a string, just return it
            if (isArray(generated)) {
                return flattenToString(generated);
            } else {
                return generated;
            }
        }
        if (node == null) {
            if (generated instanceof SourceNode) {
                return generated;
            } else {
                node = {};
            }
        }
        if (node.loc == null) {
            return new SourceNode(null, null, sourceMap, generated, node.name || null);
        }
        return new SourceNode(node.loc.start.line, node.loc.start.column, (sourceMap === true ? node.loc.source || null : sourceMap), generated, node.name || null);
    }

    function noEmptySpace() {
        return (space) ? space : ' ';
    }

    function join(left, right) {
        var leftSource,
            rightSource,
            leftCharCode,
            rightCharCode;

        leftSource = toSourceNodeWhenNeeded(left).toString();
        if (leftSource.length === 0) {
            return [right];
        }

        rightSource = toSourceNodeWhenNeeded(right).toString();
        if (rightSource.length === 0) {
            return [left];
        }

        leftCharCode = leftSource.charCodeAt(leftSource.length - 1);
        rightCharCode = rightSource.charCodeAt(0);

        if ((leftCharCode === 0x2B  /* + */ || leftCharCode === 0x2D  /* - */) && leftCharCode === rightCharCode ||
            esutils.code.isIdentifierPart(leftCharCode) && esutils.code.isIdentifierPart(rightCharCode) ||
            leftCharCode === 0x2F  /* / */ && rightCharCode === 0x69  /* i */) { // infix word operators all start with `i`
            return [left, noEmptySpace(), right];
        } else if (esutils.code.isWhiteSpace(leftCharCode) || esutils.code.isLineTerminator(leftCharCode) ||
                esutils.code.isWhiteSpace(rightCharCode) || esutils.code.isLineTerminator(rightCharCode)) {
            return [left, right];
        }
        return [left, space, right];
    }

    function addIndent(stmt) {
        return [base, stmt];
    }

    function withIndent(fn) {
        var previousBase;
        previousBase = base;
        base += indent;
        fn(base);
        base = previousBase;
    }

    function calculateSpaces(str) {
        var i;
        for (i = str.length - 1; i >= 0; --i) {
            if (esutils.code.isLineTerminator(str.charCodeAt(i))) {
                break;
            }
        }
        return (str.length - 1) - i;
    }

    function adjustMultilineComment(value, specialBase) {
        var array, i, len, line, j, spaces, previousBase, sn;

        array = value.split(/\r\n|[\r\n]/);
        spaces = Number.MAX_VALUE;

        // first line doesn't have indentation
        for (i = 1, len = array.length; i < len; ++i) {
            line = array[i];
            j = 0;
            while (j < line.length && esutils.code.isWhiteSpace(line.charCodeAt(j))) {
                ++j;
            }
            if (spaces > j) {
                spaces = j;
            }
        }

        if (typeof specialBase !== 'undefined') {
            // pattern like
            // {
            //   var t = 20;  /*
            //                 * this is comment
            //                 */
            // }
            previousBase = base;
            if (array[1][spaces] === '*') {
                specialBase += ' ';
            }
            base = specialBase;
        } else {
            if (spaces & 1) {
                // /*
                //  *
                //  */
                // If spaces are odd number, above pattern is considered.
                // We waste 1 space.
                --spaces;
            }
            previousBase = base;
        }

        for (i = 1, len = array.length; i < len; ++i) {
            sn = toSourceNodeWhenNeeded(addIndent(array[i].slice(spaces)));
            array[i] = sourceMap ? sn.join('') : sn;
        }

        base = previousBase;

        return array.join('\n');
    }

    function generateComment(comment, specialBase) {
        if (comment.type === 'Line') {
            if (endsWithLineTerminator(comment.value)) {
                return '//' + comment.value;
            } else {
                // Always use LineTerminator
                var result = '//' + comment.value;
                if (!preserveBlankLines) {
                    result += '\n';
                }
                return result;
            }
        }
        if (extra.format.indent.adjustMultilineComment && /[\n\r]/.test(comment.value)) {
            return adjustMultilineComment('/*' + comment.value + '*/', specialBase);
        }
        return '/*' + comment.value + '*/';
    }

    function addComments(stmt, result) {
        var i, len, comment, save, tailingToStatement, specialBase, fragment,
            extRange, range, prevRange, prefix, infix, suffix, count;

        if (stmt.leadingComments && stmt.leadingComments.length > 0) {
            save = result;

            if (preserveBlankLines) {
                comment = stmt.leadingComments[0];
                result = [];

                extRange = comment.extendedRange;
                range = comment.range;

                prefix = sourceCode.substring(extRange[0], range[0]);
                count = (prefix.match(/\n/g) || []).length;
                if (count > 0) {
                    result.push(stringRepeat('\n', count));
                    result.push(addIndent(generateComment(comment)));
                } else {
                    result.push(prefix);
                    result.push(generateComment(comment));
                }

                prevRange = range;

                for (i = 1, len = stmt.leadingComments.length; i < len; i++) {
                    comment = stmt.leadingComments[i];
                    range = comment.range;

                    infix = sourceCode.substring(prevRange[1], range[0]);
                    count = (infix.match(/\n/g) || []).length;
                    result.push(stringRepeat('\n', count));
                    result.push(addIndent(generateComment(comment)));

                    prevRange = range;
                }

                suffix = sourceCode.substring(range[1], extRange[1]);
                count = (suffix.match(/\n/g) || []).length;
                result.push(stringRepeat('\n', count));
            } else {
                comment = stmt.leadingComments[0];
                result = [];
                if (safeConcatenation && stmt.type === Syntax.Program && stmt.body.length === 0) {
                    result.push('\n');
                }
                result.push(generateComment(comment));
                if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                    result.push('\n');
                }

                for (i = 1, len = stmt.leadingComments.length; i < len; ++i) {
                    comment = stmt.leadingComments[i];
                    fragment = [generateComment(comment)];
                    if (!endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
                        fragment.push('\n');
                    }
                    result.push(addIndent(fragment));
                }
            }

            result.push(addIndent(save));
        }

        if (stmt.trailingComments) {

            if (preserveBlankLines) {
                comment = stmt.trailingComments[0];
                extRange = comment.extendedRange;
                range = comment.range;

                prefix = sourceCode.substring(extRange[0], range[0]);
                count = (prefix.match(/\n/g) || []).length;

                if (count > 0) {
                    result.push(stringRepeat('\n', count));
                    result.push(addIndent(generateComment(comment)));
                } else {
                    result.push(prefix);
                    result.push(generateComment(comment));
                }
            } else {
                tailingToStatement = !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString());
                specialBase = stringRepeat(' ', calculateSpaces(toSourceNodeWhenNeeded([base, result, indent]).toString()));
                for (i = 0, len = stmt.trailingComments.length; i < len; ++i) {
                    comment = stmt.trailingComments[i];
                    if (tailingToStatement) {
                        // We assume target like following script
                        //
                        // var t = 20;  /**
                        //               * This is comment of t
                        //               */
                        if (i === 0) {
                            // first case
                            result = [result, indent];
                        } else {
                            result = [result, specialBase];
                        }
                        result.push(generateComment(comment, specialBase));
                    } else {
                        result = [result, addIndent(generateComment(comment))];
                    }
                    if (i !== len - 1 && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                        result = [result, '\n'];
                    }
                }
            }
        }

        return result;
    }

    function generateBlankLines(start, end, result) {
        var j, newlineCount = 0;

        for (j = start; j < end; j++) {
            if (sourceCode[j] === '\n') {
                newlineCount++;
            }
        }

        for (j = 1; j < newlineCount; j++) {
            result.push(newline);
        }
    }

    function parenthesize(text, current, should) {
        if (current < should) {
            return ['(', text, ')'];
        }
        return text;
    }

    function generateVerbatimString(string) {
        var i, iz, result;
        result = string.split(/\r\n|\n/);
        for (i = 1, iz = result.length; i < iz; i++) {
            result[i] = newline + base + result[i];
        }
        return result;
    }

    function generateVerbatim(expr, precedence) {
        var verbatim, result, prec;
        verbatim = expr[extra.verbatim];

        if (typeof verbatim === 'string') {
            result = parenthesize(generateVerbatimString(verbatim), Precedence.Sequence, precedence);
        } else {
            // verbatim is object
            result = generateVerbatimString(verbatim.content);
            prec = (verbatim.precedence != null) ? verbatim.precedence : Precedence.Sequence;
            result = parenthesize(result, prec, precedence);
        }

        return toSourceNodeWhenNeeded(result, expr);
    }

    function CodeGenerator() {
    }

    // Helpers.

    CodeGenerator.prototype.maybeBlock = function(stmt, flags) {
        var result, noLeadingComment, that = this;

        noLeadingComment = !extra.comment || !stmt.leadingComments;

        if (stmt.type === Syntax.BlockStatement && noLeadingComment) {
            return [space, this.generateStatement(stmt, flags)];
        }

        if (stmt.type === Syntax.EmptyStatement && noLeadingComment) {
            return ';';
        }

        withIndent(function () {
            result = [
                newline,
                addIndent(that.generateStatement(stmt, flags))
            ];
        });

        return result;
    };

    CodeGenerator.prototype.maybeBlockSuffix = function (stmt, result) {
        var ends = endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString());
        if (stmt.type === Syntax.BlockStatement && (!extra.comment || !stmt.leadingComments) && !ends) {
            return [result, space];
        }
        if (ends) {
            return [result, base];
        }
        return [result, newline, base];
    };

    function generateIdentifier(node) {
        return toSourceNodeWhenNeeded(node.name, node);
    }

    function generateAsyncPrefix(node, spaceRequired) {
        return node.async ? 'async' + (spaceRequired ? noEmptySpace() : space) : '';
    }

    function generateStarSuffix(node) {
        var isGenerator = node.generator && !extra.moz.starlessGenerator;
        return isGenerator ? '*' + space : '';
    }

    function generateMethodPrefix(prop) {
        var func = prop.value;
        if (func.async) {
            return generateAsyncPrefix(func, !prop.computed);
        } else {
            // avoid space before method name
            return generateStarSuffix(func) ? '*' : '';
        }
    }

    CodeGenerator.prototype.generatePattern = function (node, precedence, flags) {
        if (node.type === Syntax.Identifier) {
            return generateIdentifier(node);
        }
        return this.generateExpression(node, precedence, flags);
    };

    CodeGenerator.prototype.generateFunctionParams = function (node) {
        var i, iz, result, hasDefault;

        hasDefault = false;

        if (node.type === Syntax.ArrowFunctionExpression &&
                !node.rest && (!node.defaults || node.defaults.length === 0) &&
                node.params.length === 1 && node.params[0].type === Syntax.Identifier) {
            // arg => { } case
            result = [generateAsyncPrefix(node, true), generateIdentifier(node.params[0])];
        } else {
            result = node.type === Syntax.ArrowFunctionExpression ? [generateAsyncPrefix(node, false)] : [];
            result.push('(');
            if (node.defaults) {
                hasDefault = true;
            }
            for (i = 0, iz = node.params.length; i < iz; ++i) {
                if (hasDefault && node.defaults[i]) {
                    // Handle default values.
                    result.push(this.generateAssignment(node.params[i], node.defaults[i], '=', Precedence.Assignment, E_TTT));
                } else {
                    result.push(this.generatePattern(node.params[i], Precedence.Assignment, E_TTT));
                }
                if (i + 1 < iz) {
                    result.push(',' + space);
                }
            }

            if (node.rest) {
                if (node.params.length) {
                    result.push(',' + space);
                }
                result.push('...');
                result.push(generateIdentifier(node.rest));
            }

            result.push(')');
        }

        return result;
    };

    CodeGenerator.prototype.generateFunctionBody = function (node) {
        var result, expr;

        result = this.generateFunctionParams(node);

        if (node.type === Syntax.ArrowFunctionExpression) {
            result.push(space);
            result.push('=>');
        }

        if (node.expression) {
            result.push(space);
            expr = this.generateExpression(node.body, Precedence.Assignment, E_TTT);
            if (expr.toString().charAt(0) === '{') {
                expr = ['(', expr, ')'];
            }
            result.push(expr);
        } else {
            result.push(this.maybeBlock(node.body, S_TTFF));
        }

        return result;
    };

    CodeGenerator.prototype.generateIterationForStatement = function (operator, stmt, flags) {
        var result = ['for' + space + '('], that = this;
        withIndent(function () {
            if (stmt.left.type === Syntax.VariableDeclaration) {
                withIndent(function () {
                    result.push(stmt.left.kind + noEmptySpace());
                    result.push(that.generateStatement(stmt.left.declarations[0], S_FFFF));
                });
            } else {
                result.push(that.generateExpression(stmt.left, Precedence.Call, E_TTT));
            }

            result = join(result, operator);
            result = [join(
                result,
                that.generateExpression(stmt.right, Precedence.Sequence, E_TTT)
            ), ')'];
        });
        result.push(this.maybeBlock(stmt.body, flags));
        return result;
    };

    CodeGenerator.prototype.generatePropertyKey = function (expr, computed) {
        var result = [];

        if (computed) {
            result.push('[');
        }

        result.push(this.generateExpression(expr, Precedence.Sequence, E_TTT));
        if (computed) {
            result.push(']');
        }

        return result;
    };

    CodeGenerator.prototype.generateAssignment = function (left, right, operator, precedence, flags) {
        if (Precedence.Assignment < precedence) {
            flags |= F_ALLOW_IN;
        }

        return parenthesize(
            [
                this.generateExpression(left, Precedence.Call, flags),
                space + operator + space,
                this.generateExpression(right, Precedence.Assignment, flags)
            ],
            Precedence.Assignment,
            precedence
        );
    };

    CodeGenerator.prototype.semicolon = function (flags) {
        if (!semicolons && flags & F_SEMICOLON_OPT) {
            return '';
        }
        return ';';
    };

    // Statements.

    CodeGenerator.Statement = {

        BlockStatement: function (stmt, flags) {
            var range, content, result = ['{', newline], that = this;

            withIndent(function () {
                // handle functions without any code
                if (stmt.body.length === 0 && preserveBlankLines) {
                    range = stmt.range;
                    if (range[1] - range[0] > 2) {
                        content = sourceCode.substring(range[0] + 1, range[1] - 1);
                        if (content[0] === '\n') {
                            result = ['{'];
                        }
                        result.push(content);
                    }
                }

                var i, iz, fragment, bodyFlags;
                bodyFlags = S_TFFF;
                if (flags & F_FUNC_BODY) {
                    bodyFlags |= F_DIRECTIVE_CTX;
                }

                for (i = 0, iz = stmt.body.length; i < iz; ++i) {
                    if (preserveBlankLines) {
                        // handle spaces before the first line
                        if (i === 0) {
                            if (stmt.body[0].leadingComments) {
                                range = stmt.body[0].leadingComments[0].extendedRange;
                                content = sourceCode.substring(range[0], range[1]);
                                if (content[0] === '\n') {
                                    result = ['{'];
                                }
                            }
                            if (!stmt.body[0].leadingComments) {
                                generateBlankLines(stmt.range[0], stmt.body[0].range[0], result);
                            }
                        }

                        // handle spaces between lines
                        if (i > 0) {
                            if (!stmt.body[i - 1].trailingComments  && !stmt.body[i].leadingComments) {
                                generateBlankLines(stmt.body[i - 1].range[1], stmt.body[i].range[0], result);
                            }
                        }
                    }

                    if (i === iz - 1) {
                        bodyFlags |= F_SEMICOLON_OPT;
                    }

                    if (stmt.body[i].leadingComments && preserveBlankLines) {
                        fragment = that.generateStatement(stmt.body[i], bodyFlags);
                    } else {
                        fragment = addIndent(that.generateStatement(stmt.body[i], bodyFlags));
                    }

                    result.push(fragment);
                    if (!endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
                        if (preserveBlankLines && i < iz - 1) {
                            // don't add a new line if there are leading coments
                            // in the next statement
                            if (!stmt.body[i + 1].leadingComments) {
                                result.push(newline);
                            }
                        } else {
                            result.push(newline);
                        }
                    }

                    if (preserveBlankLines) {
                        // handle spaces after the last line
                        if (i === iz - 1) {
                            if (!stmt.body[i].trailingComments) {
                                generateBlankLines(stmt.body[i].range[1], stmt.range[1], result);
                            }
                        }
                    }
                }
            });

            result.push(addIndent('}'));
            return result;
        },

        BreakStatement: function (stmt, flags) {
            if (stmt.label) {
                return 'break ' + stmt.label.name + this.semicolon(flags);
            }
            return 'break' + this.semicolon(flags);
        },

        ContinueStatement: function (stmt, flags) {
            if (stmt.label) {
                return 'continue ' + stmt.label.name + this.semicolon(flags);
            }
            return 'continue' + this.semicolon(flags);
        },

        ClassBody: function (stmt, flags) {
            var result = [ '{', newline], that = this;

            withIndent(function (indent) {
                var i, iz;

                for (i = 0, iz = stmt.body.length; i < iz; ++i) {
                    result.push(indent);
                    result.push(that.generateExpression(stmt.body[i], Precedence.Sequence, E_TTT));
                    if (i + 1 < iz) {
                        result.push(newline);
                    }
                }
            });

            if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                result.push(newline);
            }
            result.push(base);
            result.push('}');
            return result;
        },

        ClassDeclaration: function (stmt, flags) {
            var result, fragment;
            result  = ['class ' + stmt.id.name];
            if (stmt.superClass) {
                fragment = join('extends', this.generateExpression(stmt.superClass, Precedence.Assignment, E_TTT));
                result = join(result, fragment);
            }
            result.push(space);
            result.push(this.generateStatement(stmt.body, S_TFFT));
            return result;
        },

        DirectiveStatement: function (stmt, flags) {
            if (extra.raw && stmt.raw) {
                return stmt.raw + this.semicolon(flags);
            }
            return escapeDirective(stmt.directive) + this.semicolon(flags);
        },

        DoWhileStatement: function (stmt, flags) {
            // Because `do 42 while (cond)` is Syntax Error. We need semicolon.
            var result = join('do', this.maybeBlock(stmt.body, S_TFFF));
            result = this.maybeBlockSuffix(stmt.body, result);
            return join(result, [
                'while' + space + '(',
                this.generateExpression(stmt.test, Precedence.Sequence, E_TTT),
                ')' + this.semicolon(flags)
            ]);
        },

        CatchClause: function (stmt, flags) {
            var result, that = this;
            withIndent(function () {
                var guard;

                result = [
                    'catch' + space + '(',
                    that.generateExpression(stmt.param, Precedence.Sequence, E_TTT),
                    ')'
                ];

                if (stmt.guard) {
                    guard = that.generateExpression(stmt.guard, Precedence.Sequence, E_TTT);
                    result.splice(2, 0, ' if ', guard);
                }
            });
            result.push(this.maybeBlock(stmt.body, S_TFFF));
            return result;
        },

        DebuggerStatement: function (stmt, flags) {
            return 'debugger' + this.semicolon(flags);
        },

        EmptyStatement: function (stmt, flags) {
            return ';';
        },

        ExportDeclaration: function (stmt, flags) {
            var result = [ 'export' ], bodyFlags, that = this;

            bodyFlags = (flags & F_SEMICOLON_OPT) ? S_TFFT : S_TFFF;

            // export default HoistableDeclaration[Default]
            // export default AssignmentExpression[In] ;
            if (stmt['default']) {
                result = join(result, 'default');
                if (isStatement(stmt.declaration)) {
                    result = join(result, this.generateStatement(stmt.declaration, bodyFlags));
                } else {
                    result = join(result, this.generateExpression(stmt.declaration, Precedence.Assignment, E_TTT) + this.semicolon(flags));
                }
                return result;
            }

            // export VariableStatement
            // export Declaration[Default]
            if (stmt.declaration) {
                return join(result, this.generateStatement(stmt.declaration, bodyFlags));
            }

            // export * FromClause ;
            // export ExportClause[NoReference] FromClause ;
            // export ExportClause ;
            if (stmt.specifiers) {
                if (stmt.specifiers.length === 0) {
                    result = join(result, '{' + space + '}');
                } else if (stmt.specifiers[0].type === Syntax.ExportBatchSpecifier) {
                    result = join(result, this.generateExpression(stmt.specifiers[0], Precedence.Sequence, E_TTT));
                } else {
                    result = join(result, '{');
                    withIndent(function (indent) {
                        var i, iz;
                        result.push(newline);
                        for (i = 0, iz = stmt.specifiers.length; i < iz; ++i) {
                            result.push(indent);
                            result.push(that.generateExpression(stmt.specifiers[i], Precedence.Sequence, E_TTT));
                            if (i + 1 < iz) {
                                result.push(',' + newline);
                            }
                        }
                    });
                    if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                        result.push(newline);
                    }
                    result.push(base + '}');
                }

                if (stmt.source) {
                    result = join(result, [
                        'from' + space,
                        // ModuleSpecifier
                        this.generateExpression(stmt.source, Precedence.Sequence, E_TTT),
                        this.semicolon(flags)
                    ]);
                } else {
                    result.push(this.semicolon(flags));
                }
            }
            return result;
        },

        ExpressionStatement: function (stmt, flags) {
            var result, fragment;

            function isClassPrefixed(fragment) {
                var code;
                if (fragment.slice(0, 5) !== 'class') {
                    return false;
                }
                code = fragment.charCodeAt(5);
                return code === 0x7B  /* '{' */ || esutils.code.isWhiteSpace(code) || esutils.code.isLineTerminator(code);
            }

            function isFunctionPrefixed(fragment) {
                var code;
                if (fragment.slice(0, 8) !== 'function') {
                    return false;
                }
                code = fragment.charCodeAt(8);
                return code === 0x28 /* '(' */ || esutils.code.isWhiteSpace(code) || code === 0x2A  /* '*' */ || esutils.code.isLineTerminator(code);
            }

            function isAsyncPrefixed(fragment) {
                var code, i, iz;
                if (fragment.slice(0, 5) !== 'async') {
                    return false;
                }
                if (!esutils.code.isWhiteSpace(fragment.charCodeAt(5))) {
                    return false;
                }
                for (i = 6, iz = fragment.length; i < iz; ++i) {
                    if (!esutils.code.isWhiteSpace(fragment.charCodeAt(i))) {
                        break;
                    }
                }
                if (i === iz) {
                    return false;
                }
                if (fragment.slice(i, i + 8) !== 'function') {
                    return false;
                }
                code = fragment.charCodeAt(i + 8);
                return code === 0x28 /* '(' */ || esutils.code.isWhiteSpace(code) || code === 0x2A  /* '*' */ || esutils.code.isLineTerminator(code);
            }

            result = [this.generateExpression(stmt.expression, Precedence.Sequence, E_TTT)];
            // 12.4 '{', 'function', 'class' is not allowed in this position.
            // wrap expression with parentheses
            fragment = toSourceNodeWhenNeeded(result).toString();
            if (fragment.charCodeAt(0) === 0x7B  /* '{' */ ||  // ObjectExpression
                    isClassPrefixed(fragment) ||
                    isFunctionPrefixed(fragment) ||
                    isAsyncPrefixed(fragment) ||
                    (directive && (flags & F_DIRECTIVE_CTX) && stmt.expression.type === Syntax.Literal && typeof stmt.expression.value === 'string')) {
                result = ['(', result, ')' + this.semicolon(flags)];
            } else {
                result.push(this.semicolon(flags));
            }
            return result;
        },

        ImportDeclaration: function (stmt, flags) {
            // ES6: 15.2.1 valid import declarations:
            //     - import ImportClause FromClause ;
            //     - import ModuleSpecifier ;
            var result, cursor, that = this;

            // If no ImportClause is present,
            // this should be `import ModuleSpecifier` so skip `from`
            // ModuleSpecifier is StringLiteral.
            if (stmt.specifiers.length === 0) {
                // import ModuleSpecifier ;
                return [
                    'import',
                    space,
                    // ModuleSpecifier
                    this.generateExpression(stmt.source, Precedence.Sequence, E_TTT),
                    this.semicolon(flags)
                ];
            }

            // import ImportClause FromClause ;
            result = [
                'import'
            ];
            cursor = 0;

            // ImportedBinding
            if (stmt.specifiers[cursor].type === Syntax.ImportDefaultSpecifier) {
                result = join(result, [
                        this.generateExpression(stmt.specifiers[cursor], Precedence.Sequence, E_TTT)
                ]);
                ++cursor;
            }

            if (stmt.specifiers[cursor]) {
                if (cursor !== 0) {
                    result.push(',');
                }

                if (stmt.specifiers[cursor].type === Syntax.ImportNamespaceSpecifier) {
                    // NameSpaceImport
                    result = join(result, [
                            space,
                            this.generateExpression(stmt.specifiers[cursor], Precedence.Sequence, E_TTT)
                    ]);
                } else {
                    // NamedImports
                    result.push(space + '{');

                    if ((stmt.specifiers.length - cursor) === 1) {
                        // import { ... } from "...";
                        result.push(space);
                        result.push(this.generateExpression(stmt.specifiers[cursor], Precedence.Sequence, E_TTT));
                        result.push(space + '}' + space);
                    } else {
                        // import {
                        //    ...,
                        //    ...,
                        // } from "...";
                        withIndent(function (indent) {
                            var i, iz;
                            result.push(newline);
                            for (i = cursor, iz = stmt.specifiers.length; i < iz; ++i) {
                                result.push(indent);
                                result.push(that.generateExpression(stmt.specifiers[i], Precedence.Sequence, E_TTT));
                                if (i + 1 < iz) {
                                    result.push(',' + newline);
                                }
                            }
                        });
                        if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                            result.push(newline);
                        }
                        result.push(base + '}' + space);
                    }
                }
            }

            result = join(result, [
                'from' + space,
                // ModuleSpecifier
                this.generateExpression(stmt.source, Precedence.Sequence, E_TTT),
                this.semicolon(flags)
            ]);
            return result;
        },

        VariableDeclarator: function (stmt, flags) {
            var itemFlags = (flags & F_ALLOW_IN) ? E_TTT : E_FTT;
            if (stmt.init) {
                return [
                    this.generateExpression(stmt.id, Precedence.Assignment, itemFlags),
                    space,
                    '=',
                    space,
                    this.generateExpression(stmt.init, Precedence.Assignment, itemFlags)
                ];
            }
            return this.generatePattern(stmt.id, Precedence.Assignment, itemFlags);
        },

        VariableDeclaration: function (stmt, flags) {
            // VariableDeclarator is typed as Statement,
            // but joined with comma (not LineTerminator).
            // So if comment is attached to target node, we should specialize.
            var result, i, iz, node, bodyFlags, that = this;

            result = [ stmt.kind ];

            bodyFlags = (flags & F_ALLOW_IN) ? S_TFFF : S_FFFF;

            function block() {
                node = stmt.declarations[0];
                if (extra.comment && node.leadingComments) {
                    result.push('\n');
                    result.push(addIndent(that.generateStatement(node, bodyFlags)));
                } else {
                    result.push(noEmptySpace());
                    result.push(that.generateStatement(node, bodyFlags));
                }

                for (i = 1, iz = stmt.declarations.length; i < iz; ++i) {
                    node = stmt.declarations[i];
                    if (extra.comment && node.leadingComments) {
                        result.push(',' + newline);
                        result.push(addIndent(that.generateStatement(node, bodyFlags)));
                    } else {
                        result.push(',' + space);
                        result.push(that.generateStatement(node, bodyFlags));
                    }
                }
            }

            if (stmt.declarations.length > 1) {
                withIndent(block);
            } else {
                block();
            }

            result.push(this.semicolon(flags));

            return result;
        },

        ThrowStatement: function (stmt, flags) {
            return [join(
                'throw',
                this.generateExpression(stmt.argument, Precedence.Sequence, E_TTT)
            ), this.semicolon(flags)];
        },

        TryStatement: function (stmt, flags) {
            var result, i, iz, guardedHandlers;

            result = ['try', this.maybeBlock(stmt.block, S_TFFF)];
            result = this.maybeBlockSuffix(stmt.block, result);

            if (stmt.handlers) {
                // old interface
                for (i = 0, iz = stmt.handlers.length; i < iz; ++i) {
                    result = join(result, this.generateStatement(stmt.handlers[i], S_TFFF));
                    if (stmt.finalizer || i + 1 !== iz) {
                        result = this.maybeBlockSuffix(stmt.handlers[i].body, result);
                    }
                }
            } else {
                guardedHandlers = stmt.guardedHandlers || [];

                for (i = 0, iz = guardedHandlers.length; i < iz; ++i) {
                    result = join(result, this.generateStatement(guardedHandlers[i], S_TFFF));
                    if (stmt.finalizer || i + 1 !== iz) {
                        result = this.maybeBlockSuffix(guardedHandlers[i].body, result);
                    }
                }

                // new interface
                if (stmt.handler) {
                    if (isArray(stmt.handler)) {
                        for (i = 0, iz = stmt.handler.length; i < iz; ++i) {
                            result = join(result, this.generateStatement(stmt.handler[i], S_TFFF));
                            if (stmt.finalizer || i + 1 !== iz) {
                                result = this.maybeBlockSuffix(stmt.handler[i].body, result);
                            }
                        }
                    } else {
                        result = join(result, this.generateStatement(stmt.handler, S_TFFF));
                        if (stmt.finalizer) {
                            result = this.maybeBlockSuffix(stmt.handler.body, result);
                        }
                    }
                }
            }
            if (stmt.finalizer) {
                result = join(result, ['finally', this.maybeBlock(stmt.finalizer, S_TFFF)]);
            }
            return result;
        },

        SwitchStatement: function (stmt, flags) {
            var result, fragment, i, iz, bodyFlags, that = this;
            withIndent(function () {
                result = [
                    'switch' + space + '(',
                    that.generateExpression(stmt.discriminant, Precedence.Sequence, E_TTT),
                    ')' + space + '{' + newline
                ];
            });
            if (stmt.cases) {
                bodyFlags = S_TFFF;
                for (i = 0, iz = stmt.cases.length; i < iz; ++i) {
                    if (i === iz - 1) {
                        bodyFlags |= F_SEMICOLON_OPT;
                    }
                    fragment = addIndent(this.generateStatement(stmt.cases[i], bodyFlags));
                    result.push(fragment);
                    if (!endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
                        result.push(newline);
                    }
                }
            }
            result.push(addIndent('}'));
            return result;
        },

        SwitchCase: function (stmt, flags) {
            var result, fragment, i, iz, bodyFlags, that = this;
            withIndent(function () {
                if (stmt.test) {
                    result = [
                        join('case', that.generateExpression(stmt.test, Precedence.Sequence, E_TTT)),
                        ':'
                    ];
                } else {
                    result = ['default:'];
                }

                i = 0;
                iz = stmt.consequent.length;
                if (iz && stmt.consequent[0].type === Syntax.BlockStatement) {
                    fragment = that.maybeBlock(stmt.consequent[0], S_TFFF);
                    result.push(fragment);
                    i = 1;
                }

                if (i !== iz && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                    result.push(newline);
                }

                bodyFlags = S_TFFF;
                for (; i < iz; ++i) {
                    if (i === iz - 1 && flags & F_SEMICOLON_OPT) {
                        bodyFlags |= F_SEMICOLON_OPT;
                    }
                    fragment = addIndent(that.generateStatement(stmt.consequent[i], bodyFlags));
                    result.push(fragment);
                    if (i + 1 !== iz && !endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
                        result.push(newline);
                    }
                }
            });
            return result;
        },

        IfStatement: function (stmt, flags) {
            var result, bodyFlags, semicolonOptional, that = this;
            withIndent(function () {
                result = [
                    'if' + space + '(',
                    that.generateExpression(stmt.test, Precedence.Sequence, E_TTT),
                    ')'
                ];
            });
            semicolonOptional = flags & F_SEMICOLON_OPT;
            bodyFlags = S_TFFF;
            if (semicolonOptional) {
                bodyFlags |= F_SEMICOLON_OPT;
            }
            if (stmt.alternate) {
                result.push(this.maybeBlock(stmt.consequent, S_TFFF));
                result = this.maybeBlockSuffix(stmt.consequent, result);
                if (stmt.alternate.type === Syntax.IfStatement) {
                    result = join(result, ['else ', this.generateStatement(stmt.alternate, bodyFlags)]);
                } else {
                    result = join(result, join('else', this.maybeBlock(stmt.alternate, bodyFlags)));
                }
            } else {
                result.push(this.maybeBlock(stmt.consequent, bodyFlags));
            }
            return result;
        },

        ForStatement: function (stmt, flags) {
            var result, that = this;
            withIndent(function () {
                result = ['for' + space + '('];
                if (stmt.init) {
                    if (stmt.init.type === Syntax.VariableDeclaration) {
                        result.push(that.generateStatement(stmt.init, S_FFFF));
                    } else {
                        // F_ALLOW_IN becomes false.
                        result.push(that.generateExpression(stmt.init, Precedence.Sequence, E_FTT));
                        result.push(';');
                    }
                } else {
                    result.push(';');
                }

                if (stmt.test) {
                    result.push(space);
                    result.push(that.generateExpression(stmt.test, Precedence.Sequence, E_TTT));
                    result.push(';');
                } else {
                    result.push(';');
                }

                if (stmt.update) {
                    result.push(space);
                    result.push(that.generateExpression(stmt.update, Precedence.Sequence, E_TTT));
                    result.push(')');
                } else {
                    result.push(')');
                }
            });

            result.push(this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF));
            return result;
        },

        ForInStatement: function (stmt, flags) {
            return this.generateIterationForStatement('in', stmt, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF);
        },

        ForOfStatement: function (stmt, flags) {
            return this.generateIterationForStatement('of', stmt, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF);
        },

        LabeledStatement: function (stmt, flags) {
            return [stmt.label.name + ':', this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF)];
        },

        Program: function (stmt, flags) {
            var result, fragment, i, iz, bodyFlags;
            iz = stmt.body.length;
            result = [safeConcatenation && iz > 0 ? '\n' : ''];
            bodyFlags = S_TFTF;
            for (i = 0; i < iz; ++i) {
                if (!safeConcatenation && i === iz - 1) {
                    bodyFlags |= F_SEMICOLON_OPT;
                }

                if (preserveBlankLines) {
                    // handle spaces before the first line
                    if (i === 0) {
                        if (!stmt.body[0].leadingComments) {
                            generateBlankLines(stmt.range[0], stmt.body[i].range[0], result);
                        }
                    }

                    // handle spaces between lines
                    if (i > 0) {
                        if (!stmt.body[i - 1].trailingComments && !stmt.body[i].leadingComments) {
                            generateBlankLines(stmt.body[i - 1].range[1], stmt.body[i].range[0], result);
                        }
                    }
                }

                fragment = addIndent(this.generateStatement(stmt.body[i], bodyFlags));
                result.push(fragment);
                if (i + 1 < iz && !endsWithLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
                    if (preserveBlankLines) {
                        if (!stmt.body[i + 1].leadingComments) {
                            result.push(newline);
                        }
                    } else {
                        result.push(newline);
                    }
                }

                if (preserveBlankLines) {
                    // handle spaces after the last line
                    if (i === iz - 1) {
                        if (!stmt.body[i].trailingComments) {
                            generateBlankLines(stmt.body[i].range[1], stmt.range[1], result);
                        }
                    }
                }
            }
            return result;
        },

        FunctionDeclaration: function (stmt, flags) {
            return [
                generateAsyncPrefix(stmt, true),
                'function',
                generateStarSuffix(stmt) || noEmptySpace(),
                generateIdentifier(stmt.id),
                this.generateFunctionBody(stmt)
            ];
        },

        ReturnStatement: function (stmt, flags) {
            if (stmt.argument) {
                return [join(
                    'return',
                    this.generateExpression(stmt.argument, Precedence.Sequence, E_TTT)
                ), this.semicolon(flags)];
            }
            return ['return' + this.semicolon(flags)];
        },

        WhileStatement: function (stmt, flags) {
            var result, that = this;
            withIndent(function () {
                result = [
                    'while' + space + '(',
                    that.generateExpression(stmt.test, Precedence.Sequence, E_TTT),
                    ')'
                ];
            });
            result.push(this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF));
            return result;
        },

        WithStatement: function (stmt, flags) {
            var result, that = this;
            withIndent(function () {
                result = [
                    'with' + space + '(',
                    that.generateExpression(stmt.object, Precedence.Sequence, E_TTT),
                    ')'
                ];
            });
            result.push(this.maybeBlock(stmt.body, flags & F_SEMICOLON_OPT ? S_TFFT : S_TFFF));
            return result;
        }

    };

    merge(CodeGenerator.prototype, CodeGenerator.Statement);

    // Expressions.

    CodeGenerator.Expression = {

        SequenceExpression: function (expr, precedence, flags) {
            var result, i, iz;
            if (Precedence.Sequence < precedence) {
                flags |= F_ALLOW_IN;
            }
            result = [];
            for (i = 0, iz = expr.expressions.length; i < iz; ++i) {
                result.push(this.generateExpression(expr.expressions[i], Precedence.Assignment, flags));
                if (i + 1 < iz) {
                    result.push(',' + space);
                }
            }
            return parenthesize(result, Precedence.Sequence, precedence);
        },

        AssignmentExpression: function (expr, precedence, flags) {
            return this.generateAssignment(expr.left, expr.right, expr.operator, precedence, flags);
        },

        ArrowFunctionExpression: function (expr, precedence, flags) {
            return parenthesize(this.generateFunctionBody(expr), Precedence.ArrowFunction, precedence);
        },

        ConditionalExpression: function (expr, precedence, flags) {
            if (Precedence.Conditional < precedence) {
                flags |= F_ALLOW_IN;
            }
            return parenthesize(
                [
                    this.generateExpression(expr.test, Precedence.LogicalOR, flags),
                    space + '?' + space,
                    this.generateExpression(expr.consequent, Precedence.Assignment, flags),
                    space + ':' + space,
                    this.generateExpression(expr.alternate, Precedence.Assignment, flags)
                ],
                Precedence.Conditional,
                precedence
            );
        },

        LogicalExpression: function (expr, precedence, flags) {
            return this.BinaryExpression(expr, precedence, flags);
        },

        BinaryExpression: function (expr, precedence, flags) {
            var result, currentPrecedence, fragment, leftSource;
            currentPrecedence = BinaryPrecedence[expr.operator];

            if (currentPrecedence < precedence) {
                flags |= F_ALLOW_IN;
            }

            fragment = this.generateExpression(expr.left, currentPrecedence, flags);

            leftSource = fragment.toString();

            if (leftSource.charCodeAt(leftSource.length - 1) === 0x2F /* / */ && esutils.code.isIdentifierPart(expr.operator.charCodeAt(0))) {
                result = [fragment, noEmptySpace(), expr.operator];
            } else {
                result = join(fragment, expr.operator);
            }

            fragment = this.generateExpression(expr.right, currentPrecedence + 1, flags);

            if (expr.operator === '/' && fragment.toString().charAt(0) === '/' ||
            expr.operator.slice(-1) === '<' && fragment.toString().slice(0, 3) === '!--') {
                // If '/' concats with '/' or `<` concats with `!--`, it is interpreted as comment start
                result.push(noEmptySpace());
                result.push(fragment);
            } else {
                result = join(result, fragment);
            }

            if (expr.operator === 'in' && !(flags & F_ALLOW_IN)) {
                return ['(', result, ')'];
            }
            return parenthesize(result, currentPrecedence, precedence);
        },

        CallExpression: function (expr, precedence, flags) {
            var result, i, iz;
            // F_ALLOW_UNPARATH_NEW becomes false.
            result = [this.generateExpression(expr.callee, Precedence.Call, E_TTF)];
            result.push('(');
            for (i = 0, iz = expr['arguments'].length; i < iz; ++i) {
                result.push(this.generateExpression(expr['arguments'][i], Precedence.Assignment, E_TTT));
                if (i + 1 < iz) {
                    result.push(',' + space);
                }
            }
            result.push(')');

            if (!(flags & F_ALLOW_CALL)) {
                return ['(', result, ')'];
            }
            return parenthesize(result, Precedence.Call, precedence);
        },

        NewExpression: function (expr, precedence, flags) {
            var result, length, i, iz, itemFlags;
            length = expr['arguments'].length;

            // F_ALLOW_CALL becomes false.
            // F_ALLOW_UNPARATH_NEW may become false.
            itemFlags = (flags & F_ALLOW_UNPARATH_NEW && !parentheses && length === 0) ? E_TFT : E_TFF;

            result = join(
                'new',
                this.generateExpression(expr.callee, Precedence.New, itemFlags)
            );

            if (!(flags & F_ALLOW_UNPARATH_NEW) || parentheses || length > 0) {
                result.push('(');
                for (i = 0, iz = length; i < iz; ++i) {
                    result.push(this.generateExpression(expr['arguments'][i], Precedence.Assignment, E_TTT));
                    if (i + 1 < iz) {
                        result.push(',' + space);
                    }
                }
                result.push(')');
            }

            return parenthesize(result, Precedence.New, precedence);
        },

        MemberExpression: function (expr, precedence, flags) {
            var result, fragment;

            // F_ALLOW_UNPARATH_NEW becomes false.
            result = [this.generateExpression(expr.object, Precedence.Call, (flags & F_ALLOW_CALL) ? E_TTF : E_TFF)];

            if (expr.computed) {
                result.push('[');
                result.push(this.generateExpression(expr.property, Precedence.Sequence, flags & F_ALLOW_CALL ? E_TTT : E_TFT));
                result.push(']');
            } else {
                if (expr.object.type === Syntax.Literal && typeof expr.object.value === 'number') {
                    fragment = toSourceNodeWhenNeeded(result).toString();
                    // When the following conditions are all true,
                    //   1. No floating point
                    //   2. Don't have exponents
                    //   3. The last character is a decimal digit
                    //   4. Not hexadecimal OR octal number literal
                    // we should add a floating point.
                    if (
                            fragment.indexOf('.') < 0 &&
                            !/[eExX]/.test(fragment) &&
                            esutils.code.isDecimalDigit(fragment.charCodeAt(fragment.length - 1)) &&
                            !(fragment.length >= 2 && fragment.charCodeAt(0) === 48)  // '0'
                            ) {
                        result.push('.');
                    }
                }
                result.push('.');
                result.push(generateIdentifier(expr.property));
            }

            return parenthesize(result, Precedence.Member, precedence);
        },

        UnaryExpression: function (expr, precedence, flags) {
            var result, fragment, rightCharCode, leftSource, leftCharCode;
            fragment = this.generateExpression(expr.argument, Precedence.Unary, E_TTT);

            if (space === '') {
                result = join(expr.operator, fragment);
            } else {
                result = [expr.operator];
                if (expr.operator.length > 2) {
                    // delete, void, typeof
                    // get `typeof []`, not `typeof[]`
                    result = join(result, fragment);
                } else {
                    // Prevent inserting spaces between operator and argument if it is unnecessary
                    // like, `!cond`
                    leftSource = toSourceNodeWhenNeeded(result).toString();
                    leftCharCode = leftSource.charCodeAt(leftSource.length - 1);
                    rightCharCode = fragment.toString().charCodeAt(0);

                    if (((leftCharCode === 0x2B  /* + */ || leftCharCode === 0x2D  /* - */) && leftCharCode === rightCharCode) ||
                            (esutils.code.isIdentifierPart(leftCharCode) && esutils.code.isIdentifierPart(rightCharCode))) {
                        result.push(noEmptySpace());
                        result.push(fragment);
                    } else {
                        result.push(fragment);
                    }
                }
            }
            return parenthesize(result, Precedence.Unary, precedence);
        },

        YieldExpression: function (expr, precedence, flags) {
            var result;
            if (expr.delegate) {
                result = 'yield*';
            } else {
                result = 'yield';
            }
            if (expr.argument) {
                result = join(
                    result,
                    this.generateExpression(expr.argument, Precedence.Yield, E_TTT)
                );
            }
            return parenthesize(result, Precedence.Yield, precedence);
        },

        AwaitExpression: function (expr, precedence, flags) {
            var result = join(
                expr.delegate ? 'await*' : 'await',
                this.generateExpression(expr.argument, Precedence.Await, E_TTT)
            );
            return parenthesize(result, Precedence.Await, precedence);
        },

        UpdateExpression: function (expr, precedence, flags) {
            if (expr.prefix) {
                return parenthesize(
                    [
                        expr.operator,
                        this.generateExpression(expr.argument, Precedence.Unary, E_TTT)
                    ],
                    Precedence.Unary,
                    precedence
                );
            }
            return parenthesize(
                [
                    this.generateExpression(expr.argument, Precedence.Postfix, E_TTT),
                    expr.operator
                ],
                Precedence.Postfix,
                precedence
            );
        },

        FunctionExpression: function (expr, precedence, flags) {
            var result = [
                generateAsyncPrefix(expr, true),
                'function'
            ];
            if (expr.id) {
                result.push(generateStarSuffix(expr) || noEmptySpace());
                result.push(generateIdentifier(expr.id));
            } else {
                result.push(generateStarSuffix(expr) || space);
            }
            result.push(this.generateFunctionBody(expr));
            return result;
        },

        ExportBatchSpecifier: function (expr, precedence, flags) {
            return '*';
        },

        ArrayPattern: function (expr, precedence, flags) {
            return this.ArrayExpression(expr, precedence, flags);
        },

        ArrayExpression: function (expr, precedence, flags) {
            var result, multiline, that = this;
            if (!expr.elements.length) {
                return '[]';
            }
            multiline = expr.elements.length > 1;
            result = ['[', multiline ? newline : ''];
            withIndent(function (indent) {
                var i, iz;
                for (i = 0, iz = expr.elements.length; i < iz; ++i) {
                    if (!expr.elements[i]) {
                        if (multiline) {
                            result.push(indent);
                        }
                        if (i + 1 === iz) {
                            result.push(',');
                        }
                    } else {
                        result.push(multiline ? indent : '');
                        result.push(that.generateExpression(expr.elements[i], Precedence.Assignment, E_TTT));
                    }
                    if (i + 1 < iz) {
                        result.push(',' + (multiline ? newline : space));
                    }
                }
            });
            if (multiline && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                result.push(newline);
            }
            result.push(multiline ? base : '');
            result.push(']');
            return result;
        },

        ClassExpression: function (expr, precedence, flags) {
            var result, fragment;
            result = ['class'];
            if (expr.id) {
                result = join(result, this.generateExpression(expr.id, Precedence.Sequence, E_TTT));
            }
            if (expr.superClass) {
                fragment = join('extends', this.generateExpression(expr.superClass, Precedence.Assignment, E_TTT));
                result = join(result, fragment);
            }
            result.push(space);
            result.push(this.generateStatement(expr.body, S_TFFT));
            return result;
        },

        MethodDefinition: function (expr, precedence, flags) {
            var result, fragment;
            if (expr['static']) {
                result = ['static' + space];
            } else {
                result = [];
            }
            if (expr.kind === 'get' || expr.kind === 'set') {
                fragment = [
                    join(expr.kind, this.generatePropertyKey(expr.key, expr.computed)),
                    this.generateFunctionBody(expr.value)
                ];
            } else {
                fragment = [
                    generateMethodPrefix(expr),
                    this.generatePropertyKey(expr.key, expr.computed),
                    this.generateFunctionBody(expr.value)
                ];
            }
            return join(result, fragment);
        },

        Property: function (expr, precedence, flags) {
            if (expr.kind === 'get' || expr.kind === 'set') {
                return [
                    expr.kind, noEmptySpace(),
                    this.generatePropertyKey(expr.key, expr.computed),
                    this.generateFunctionBody(expr.value)
                ];
            }

            if (expr.shorthand) {
                return this.generatePropertyKey(expr.key, expr.computed);
            }

            if (expr.method) {
                return [
                    generateMethodPrefix(expr),
                    this.generatePropertyKey(expr.key, expr.computed),
                    this.generateFunctionBody(expr.value)
                ];
            }

            return [
                this.generatePropertyKey(expr.key, expr.computed),
                ':' + space,
                this.generateExpression(expr.value, Precedence.Assignment, E_TTT)
            ];
        },

        ObjectExpression: function (expr, precedence, flags) {
            var multiline, result, fragment, that = this;

            if (!expr.properties.length) {
                return '{}';
            }
            multiline = expr.properties.length > 1;

            withIndent(function () {
                fragment = that.generateExpression(expr.properties[0], Precedence.Sequence, E_TTT);
            });

            if (!multiline) {
                // issues 4
                // Do not transform from
                //   dejavu.Class.declare({
                //       method2: function () {}
                //   });
                // to
                //   dejavu.Class.declare({method2: function () {
                //       }});
                if (!hasLineTerminator(toSourceNodeWhenNeeded(fragment).toString())) {
                    return [ '{', space, fragment, space, '}' ];
                }
            }

            withIndent(function (indent) {
                var i, iz;
                result = [ '{', newline, indent, fragment ];

                if (multiline) {
                    result.push(',' + newline);
                    for (i = 1, iz = expr.properties.length; i < iz; ++i) {
                        result.push(indent);
                        result.push(that.generateExpression(expr.properties[i], Precedence.Sequence, E_TTT));
                        if (i + 1 < iz) {
                            result.push(',' + newline);
                        }
                    }
                }
            });

            if (!endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                result.push(newline);
            }
            result.push(base);
            result.push('}');
            return result;
        },

        ObjectPattern: function (expr, precedence, flags) {
            var result, i, iz, multiline, property, that = this;
            if (!expr.properties.length) {
                return '{}';
            }

            multiline = false;
            if (expr.properties.length === 1) {
                property = expr.properties[0];
                if (property.value.type !== Syntax.Identifier) {
                    multiline = true;
                }
            } else {
                for (i = 0, iz = expr.properties.length; i < iz; ++i) {
                    property = expr.properties[i];
                    if (!property.shorthand) {
                        multiline = true;
                        break;
                    }
                }
            }
            result = ['{', multiline ? newline : '' ];

            withIndent(function (indent) {
                var i, iz;
                for (i = 0, iz = expr.properties.length; i < iz; ++i) {
                    result.push(multiline ? indent : '');
                    result.push(that.generateExpression(expr.properties[i], Precedence.Sequence, E_TTT));
                    if (i + 1 < iz) {
                        result.push(',' + (multiline ? newline : space));
                    }
                }
            });

            if (multiline && !endsWithLineTerminator(toSourceNodeWhenNeeded(result).toString())) {
                result.push(newline);
            }
            result.push(multiline ? base : '');
            result.push('}');
            return result;
        },

        ThisExpression: function (expr, precedence, flags) {
            return 'this';
        },

        Identifier: function (expr, precedence, flags) {
            return generateIdentifier(expr);
        },

        ImportDefaultSpecifier: function (expr, precedence, flags) {
            return generateIdentifier(expr.id);
        },

        ImportNamespaceSpecifier: function (expr, precedence, flags) {
            var result = ['*'];
            if (expr.id) {
                result.push(space + 'as' + noEmptySpace() + generateIdentifier(expr.id));
            }
            return result;
        },

        ImportSpecifier: function (expr, precedence, flags) {
            return this.ExportSpecifier(expr, precedence, flags);
        },

        ExportSpecifier: function (expr, precedence, flags) {
            var result = [ expr.id.name ];
            if (expr.name) {
                result.push(noEmptySpace() + 'as' + noEmptySpace() + generateIdentifier(expr.name));
            }
            return result;
        },

        Literal: function (expr, precedence, flags) {
            var raw;
            if (expr.hasOwnProperty('raw') && parse && extra.raw) {
                try {
                    raw = parse(expr.raw).body[0].expression;
                    if (raw.type === Syntax.Literal) {
                        if (raw.value === expr.value) {
                            return expr.raw;
                        }
                    }
                } catch (e) {
                    // not use raw property
                }
            }

            if (expr.value === null) {
                return 'null';
            }

            if (typeof expr.value === 'string') {
                return escapeString(expr.value);
            }

            if (typeof expr.value === 'number') {
                return generateNumber(expr.value);
            }

            if (typeof expr.value === 'boolean') {
                return expr.value ? 'true' : 'false';
            }

            return generateRegExp(expr.value);
        },

        GeneratorExpression: function (expr, precedence, flags) {
            return this.ComprehensionExpression(expr, precedence, flags);
        },

        ComprehensionExpression: function (expr, precedence, flags) {
            // GeneratorExpression should be parenthesized with (...), ComprehensionExpression with [...]
            // Due to https://bugzilla.mozilla.org/show_bug.cgi?id=883468 position of expr.body can differ in Spidermonkey and ES6

            var result, i, iz, fragment, that = this;
            result = (expr.type === Syntax.GeneratorExpression) ? ['('] : ['['];

            if (extra.moz.comprehensionExpressionStartsWithAssignment) {
                fragment = this.generateExpression(expr.body, Precedence.Assignment, E_TTT);
                result.push(fragment);
            }

            if (expr.blocks) {
                withIndent(function () {
                    for (i = 0, iz = expr.blocks.length; i < iz; ++i) {
                        fragment = that.generateExpression(expr.blocks[i], Precedence.Sequence, E_TTT);
                        if (i > 0 || extra.moz.comprehensionExpressionStartsWithAssignment) {
                            result = join(result, fragment);
                        } else {
                            result.push(fragment);
                        }
                    }
                });
            }

            if (expr.filter) {
                result = join(result, 'if' + space);
                fragment = this.generateExpression(expr.filter, Precedence.Sequence, E_TTT);
                result = join(result, [ '(', fragment, ')' ]);
            }

            if (!extra.moz.comprehensionExpressionStartsWithAssignment) {
                fragment = this.generateExpression(expr.body, Precedence.Assignment, E_TTT);

                result = join(result, fragment);
            }

            result.push((expr.type === Syntax.GeneratorExpression) ? ')' : ']');
            return result;
        },

        ComprehensionBlock: function (expr, precedence, flags) {
            var fragment;
            if (expr.left.type === Syntax.VariableDeclaration) {
                fragment = [
                    expr.left.kind, noEmptySpace(),
                    this.generateStatement(expr.left.declarations[0], S_FFFF)
                ];
            } else {
                fragment = this.generateExpression(expr.left, Precedence.Call, E_TTT);
            }

            fragment = join(fragment, expr.of ? 'of' : 'in');
            fragment = join(fragment, this.generateExpression(expr.right, Precedence.Sequence, E_TTT));

            return [ 'for' + space + '(', fragment, ')' ];
        },

        SpreadElement: function (expr, precedence, flags) {
            return [
                '...',
                this.generateExpression(expr.argument, Precedence.Assignment, E_TTT)
            ];
        },

        TaggedTemplateExpression: function (expr, precedence, flags) {
            var itemFlags = E_TTF;
            if (!(flags & F_ALLOW_CALL)) {
                itemFlags = E_TFF;
            }
            var result = [
                this.generateExpression(expr.tag, Precedence.Call, itemFlags),
                this.generateExpression(expr.quasi, Precedence.Primary, E_FFT)
            ];
            return parenthesize(result, Precedence.TaggedTemplate, precedence);
        },

        TemplateElement: function (expr, precedence, flags) {
            // Don't use "cooked". Since tagged template can use raw template
            // representation. So if we do so, it breaks the script semantics.
            return expr.value.raw;
        },

        TemplateLiteral: function (expr, precedence, flags) {
            var result, i, iz;
            result = [ '`' ];
            for (i = 0, iz = expr.quasis.length; i < iz; ++i) {
                result.push(this.generateExpression(expr.quasis[i], Precedence.Primary, E_TTT));
                if (i + 1 < iz) {
                    result.push('${' + space);
                    result.push(this.generateExpression(expr.expressions[i], Precedence.Sequence, E_TTT));
                    result.push(space + '}');
                }
            }
            result.push('`');
            return result;
        },

        ModuleSpecifier: function (expr, precedence, flags) {
            return this.Literal(expr, precedence, flags);
        }

    };

    merge(CodeGenerator.prototype, CodeGenerator.Expression);

    CodeGenerator.prototype.generateExpression = function (expr, precedence, flags) {
        var result, type;

        type = expr.type || Syntax.Property;

        if (extra.verbatim && expr.hasOwnProperty(extra.verbatim)) {
            return generateVerbatim(expr, precedence);
        }

        result = this[type](expr, precedence, flags);


        if (extra.comment) {
            result = addComments(expr,result);
        }
        return toSourceNodeWhenNeeded(result, expr);
    };

    CodeGenerator.prototype.generateStatement = function (stmt, flags) {
        var result,
            fragment;

        result = this[stmt.type](stmt, flags);

        // Attach comments

        if (extra.comment) {
            result = addComments(stmt, result);
        }

        fragment = toSourceNodeWhenNeeded(result).toString();
        if (stmt.type === Syntax.Program && !safeConcatenation && newline === '' &&  fragment.charAt(fragment.length - 1) === '\n') {
            result = sourceMap ? toSourceNodeWhenNeeded(result).replaceRight(/\s+$/, '') : fragment.replace(/\s+$/, '');
        }

        return toSourceNodeWhenNeeded(result, stmt);
    };

    function generateInternal(node) {
        var codegen;

        codegen = new CodeGenerator();
        if (isStatement(node)) {
            return codegen.generateStatement(node, S_TFFF);
        }

        if (isExpression(node)) {
            return codegen.generateExpression(node, Precedence.Sequence, E_TTT);
        }

        throw new Error('Unknown node type: ' + node.type);
    }

    function generate(node, options) {
        var defaultOptions = getDefaultOptions(), result, pair;

        if (options != null) {
            // Obsolete options
            //
            //   `options.indent`
            //   `options.base`
            //
            // Instead of them, we can use `option.format.indent`.
            if (typeof options.indent === 'string') {
                defaultOptions.format.indent.style = options.indent;
            }
            if (typeof options.base === 'number') {
                defaultOptions.format.indent.base = options.base;
            }
            options = updateDeeply(defaultOptions, options);
            indent = options.format.indent.style;
            if (typeof options.base === 'string') {
                base = options.base;
            } else {
                base = stringRepeat(indent, options.format.indent.base);
            }
        } else {
            options = defaultOptions;
            indent = options.format.indent.style;
            base = stringRepeat(indent, options.format.indent.base);
        }
        json = options.format.json;
        renumber = options.format.renumber;
        hexadecimal = json ? false : options.format.hexadecimal;
        quotes = json ? 'double' : options.format.quotes;
        escapeless = options.format.escapeless;
        newline = options.format.newline;
        space = options.format.space;
        if (options.format.compact) {
            newline = space = indent = base = '';
        }
        parentheses = options.format.parentheses;
        semicolons = options.format.semicolons;
        safeConcatenation = options.format.safeConcatenation;
        directive = options.directive;
        parse = json ? null : options.parse;
        sourceMap = options.sourceMap;
        sourceCode = options.sourceCode;
        preserveBlankLines = options.format.preserveBlankLines && sourceCode !== null;
        extra = options;

        if (sourceMap) {
            if (!exports.browser) {
                // We assume environment is node.js
                // And prevent from including source-map by browserify
                SourceNode = require('source-map').SourceNode;
            } else {
                SourceNode = global.sourceMap.SourceNode;
            }
        }

        result = generateInternal(node);

        if (!sourceMap) {
            pair = {code: result.toString(), map: null};
            return options.sourceMapWithCode ? pair : pair.code;
        }


        pair = result.toStringWithSourceMap({
            file: options.file,
            sourceRoot: options.sourceMapRoot
        });

        if (options.sourceContent) {
            pair.map.setSourceContent(options.sourceMap,
                                      options.sourceContent);
        }

        if (options.sourceMapWithCode) {
            return pair;
        }

        return pair.map.toString();
    }

    FORMAT_MINIFY = {
        indent: {
            style: '',
            base: 0
        },
        renumber: true,
        hexadecimal: true,
        quotes: 'auto',
        escapeless: true,
        compact: true,
        parentheses: false,
        semicolons: false
    };

    FORMAT_DEFAULTS = getDefaultOptions().format;

    exports.version = require('./package.json').version;
    exports.generate = generate;
    exports.attachComments = estraverse.attachComments;
    exports.Precedence = updateDeeply({}, Precedence);
    exports.browser = false;
    exports.FORMAT_MINIFY = FORMAT_MINIFY;
    exports.FORMAT_DEFAULTS = FORMAT_DEFAULTS;
}());
/* vim: set sw=4 ts=4 et tw=80 : */

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./package.json":80,"estraverse":64,"esutils":68,"source-map":69}],64:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>
  Copyright (C) 2012 Ariya Hidayat <ariya.hidayat@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*jslint vars:false, bitwise:true*/
/*jshint indent:4*/
/*global exports:true, define:true*/
(function (root, factory) {
    'use strict';

    // Universal Module Definition (UMD) to support AMD, CommonJS/Node.js,
    // and plain browser loading,
    if (typeof define === 'function' && define.amd) {
        define(['exports'], factory);
    } else if (typeof exports !== 'undefined') {
        factory(exports);
    } else {
        factory((root.estraverse = {}));
    }
}(this, function clone(exports) {
    'use strict';

    var Syntax,
        isArray,
        VisitorOption,
        VisitorKeys,
        objectCreate,
        objectKeys,
        BREAK,
        SKIP,
        REMOVE;

    function ignoreJSHintError() { }

    isArray = Array.isArray;
    if (!isArray) {
        isArray = function isArray(array) {
            return Object.prototype.toString.call(array) === '[object Array]';
        };
    }

    function deepCopy(obj) {
        var ret = {}, key, val;
        for (key in obj) {
            if (obj.hasOwnProperty(key)) {
                val = obj[key];
                if (typeof val === 'object' && val !== null) {
                    ret[key] = deepCopy(val);
                } else {
                    ret[key] = val;
                }
            }
        }
        return ret;
    }

    function shallowCopy(obj) {
        var ret = {}, key;
        for (key in obj) {
            if (obj.hasOwnProperty(key)) {
                ret[key] = obj[key];
            }
        }
        return ret;
    }
    ignoreJSHintError(shallowCopy);

    // based on LLVM libc++ upper_bound / lower_bound
    // MIT License

    function upperBound(array, func) {
        var diff, len, i, current;

        len = array.length;
        i = 0;

        while (len) {
            diff = len >>> 1;
            current = i + diff;
            if (func(array[current])) {
                len = diff;
            } else {
                i = current + 1;
                len -= diff + 1;
            }
        }
        return i;
    }

    function lowerBound(array, func) {
        var diff, len, i, current;

        len = array.length;
        i = 0;

        while (len) {
            diff = len >>> 1;
            current = i + diff;
            if (func(array[current])) {
                i = current + 1;
                len -= diff + 1;
            } else {
                len = diff;
            }
        }
        return i;
    }
    ignoreJSHintError(lowerBound);

    objectCreate = Object.create || (function () {
        function F() { }

        return function (o) {
            F.prototype = o;
            return new F();
        };
    })();

    objectKeys = Object.keys || function (o) {
        var keys = [], key;
        for (key in o) {
            keys.push(key);
        }
        return keys;
    };

    function extend(to, from) {
        objectKeys(from).forEach(function (key) {
            to[key] = from[key];
        });
        return to;
    }

    Syntax = {
        AssignmentExpression: 'AssignmentExpression',
        ArrayExpression: 'ArrayExpression',
        ArrayPattern: 'ArrayPattern',
        ArrowFunctionExpression: 'ArrowFunctionExpression',
        AwaitExpression: 'AwaitExpression', // CAUTION: It's deferred to ES7.
        BlockStatement: 'BlockStatement',
        BinaryExpression: 'BinaryExpression',
        BreakStatement: 'BreakStatement',
        CallExpression: 'CallExpression',
        CatchClause: 'CatchClause',
        ClassBody: 'ClassBody',
        ClassDeclaration: 'ClassDeclaration',
        ClassExpression: 'ClassExpression',
        ComprehensionBlock: 'ComprehensionBlock',  // CAUTION: It's deferred to ES7.
        ComprehensionExpression: 'ComprehensionExpression',  // CAUTION: It's deferred to ES7.
        ConditionalExpression: 'ConditionalExpression',
        ContinueStatement: 'ContinueStatement',
        DebuggerStatement: 'DebuggerStatement',
        DirectiveStatement: 'DirectiveStatement',
        DoWhileStatement: 'DoWhileStatement',
        EmptyStatement: 'EmptyStatement',
        ExportBatchSpecifier: 'ExportBatchSpecifier',
        ExportDeclaration: 'ExportDeclaration',
        ExportSpecifier: 'ExportSpecifier',
        ExpressionStatement: 'ExpressionStatement',
        ForStatement: 'ForStatement',
        ForInStatement: 'ForInStatement',
        ForOfStatement: 'ForOfStatement',
        FunctionDeclaration: 'FunctionDeclaration',
        FunctionExpression: 'FunctionExpression',
        GeneratorExpression: 'GeneratorExpression',  // CAUTION: It's deferred to ES7.
        Identifier: 'Identifier',
        IfStatement: 'IfStatement',
        ImportDeclaration: 'ImportDeclaration',
        ImportDefaultSpecifier: 'ImportDefaultSpecifier',
        ImportNamespaceSpecifier: 'ImportNamespaceSpecifier',
        ImportSpecifier: 'ImportSpecifier',
        Literal: 'Literal',
        LabeledStatement: 'LabeledStatement',
        LogicalExpression: 'LogicalExpression',
        MemberExpression: 'MemberExpression',
        MethodDefinition: 'MethodDefinition',
        ModuleSpecifier: 'ModuleSpecifier',
        NewExpression: 'NewExpression',
        ObjectExpression: 'ObjectExpression',
        ObjectPattern: 'ObjectPattern',
        Program: 'Program',
        Property: 'Property',
        ReturnStatement: 'ReturnStatement',
        SequenceExpression: 'SequenceExpression',
        SpreadElement: 'SpreadElement',
        SwitchStatement: 'SwitchStatement',
        SwitchCase: 'SwitchCase',
        TaggedTemplateExpression: 'TaggedTemplateExpression',
        TemplateElement: 'TemplateElement',
        TemplateLiteral: 'TemplateLiteral',
        ThisExpression: 'ThisExpression',
        ThrowStatement: 'ThrowStatement',
        TryStatement: 'TryStatement',
        UnaryExpression: 'UnaryExpression',
        UpdateExpression: 'UpdateExpression',
        VariableDeclaration: 'VariableDeclaration',
        VariableDeclarator: 'VariableDeclarator',
        WhileStatement: 'WhileStatement',
        WithStatement: 'WithStatement',
        YieldExpression: 'YieldExpression'
    };

    VisitorKeys = {
        AssignmentExpression: ['left', 'right'],
        ArrayExpression: ['elements'],
        ArrayPattern: ['elements'],
        ArrowFunctionExpression: ['params', 'defaults', 'rest', 'body'],
        AwaitExpression: ['argument'], // CAUTION: It's deferred to ES7.
        BlockStatement: ['body'],
        BinaryExpression: ['left', 'right'],
        BreakStatement: ['label'],
        CallExpression: ['callee', 'arguments'],
        CatchClause: ['param', 'body'],
        ClassBody: ['body'],
        ClassDeclaration: ['id', 'body', 'superClass'],
        ClassExpression: ['id', 'body', 'superClass'],
        ComprehensionBlock: ['left', 'right'],  // CAUTION: It's deferred to ES7.
        ComprehensionExpression: ['blocks', 'filter', 'body'],  // CAUTION: It's deferred to ES7.
        ConditionalExpression: ['test', 'consequent', 'alternate'],
        ContinueStatement: ['label'],
        DebuggerStatement: [],
        DirectiveStatement: [],
        DoWhileStatement: ['body', 'test'],
        EmptyStatement: [],
        ExportBatchSpecifier: [],
        ExportDeclaration: ['declaration', 'specifiers', 'source'],
        ExportSpecifier: ['id', 'name'],
        ExpressionStatement: ['expression'],
        ForStatement: ['init', 'test', 'update', 'body'],
        ForInStatement: ['left', 'right', 'body'],
        ForOfStatement: ['left', 'right', 'body'],
        FunctionDeclaration: ['id', 'params', 'defaults', 'rest', 'body'],
        FunctionExpression: ['id', 'params', 'defaults', 'rest', 'body'],
        GeneratorExpression: ['blocks', 'filter', 'body'],  // CAUTION: It's deferred to ES7.
        Identifier: [],
        IfStatement: ['test', 'consequent', 'alternate'],
        ImportDeclaration: ['specifiers', 'source'],
        ImportDefaultSpecifier: ['id'],
        ImportNamespaceSpecifier: ['id'],
        ImportSpecifier: ['id', 'name'],
        Literal: [],
        LabeledStatement: ['label', 'body'],
        LogicalExpression: ['left', 'right'],
        MemberExpression: ['object', 'property'],
        MethodDefinition: ['key', 'value'],
        ModuleSpecifier: [],
        NewExpression: ['callee', 'arguments'],
        ObjectExpression: ['properties'],
        ObjectPattern: ['properties'],
        Program: ['body'],
        Property: ['key', 'value'],
        ReturnStatement: ['argument'],
        SequenceExpression: ['expressions'],
        SpreadElement: ['argument'],
        SwitchStatement: ['discriminant', 'cases'],
        SwitchCase: ['test', 'consequent'],
        TaggedTemplateExpression: ['tag', 'quasi'],
        TemplateElement: [],
        TemplateLiteral: ['quasis', 'expressions'],
        ThisExpression: [],
        ThrowStatement: ['argument'],
        TryStatement: ['block', 'handlers', 'handler', 'guardedHandlers', 'finalizer'],
        UnaryExpression: ['argument'],
        UpdateExpression: ['argument'],
        VariableDeclaration: ['declarations'],
        VariableDeclarator: ['id', 'init'],
        WhileStatement: ['test', 'body'],
        WithStatement: ['object', 'body'],
        YieldExpression: ['argument']
    };

    // unique id
    BREAK = {};
    SKIP = {};
    REMOVE = {};

    VisitorOption = {
        Break: BREAK,
        Skip: SKIP,
        Remove: REMOVE
    };

    function Reference(parent, key) {
        this.parent = parent;
        this.key = key;
    }

    Reference.prototype.replace = function replace(node) {
        this.parent[this.key] = node;
    };

    Reference.prototype.remove = function remove() {
        if (isArray(this.parent)) {
            this.parent.splice(this.key, 1);
            return true;
        } else {
            this.replace(null);
            return false;
        }
    };

    function Element(node, path, wrap, ref) {
        this.node = node;
        this.path = path;
        this.wrap = wrap;
        this.ref = ref;
    }

    function Controller() { }

    // API:
    // return property path array from root to current node
    Controller.prototype.path = function path() {
        var i, iz, j, jz, result, element;

        function addToPath(result, path) {
            if (isArray(path)) {
                for (j = 0, jz = path.length; j < jz; ++j) {
                    result.push(path[j]);
                }
            } else {
                result.push(path);
            }
        }

        // root node
        if (!this.__current.path) {
            return null;
        }

        // first node is sentinel, second node is root element
        result = [];
        for (i = 2, iz = this.__leavelist.length; i < iz; ++i) {
            element = this.__leavelist[i];
            addToPath(result, element.path);
        }
        addToPath(result, this.__current.path);
        return result;
    };

    // API:
    // return type of current node
    Controller.prototype.type = function () {
        var node = this.current();
        return node.type || this.__current.wrap;
    };

    // API:
    // return array of parent elements
    Controller.prototype.parents = function parents() {
        var i, iz, result;

        // first node is sentinel
        result = [];
        for (i = 1, iz = this.__leavelist.length; i < iz; ++i) {
            result.push(this.__leavelist[i].node);
        }

        return result;
    };

    // API:
    // return current node
    Controller.prototype.current = function current() {
        return this.__current.node;
    };

    Controller.prototype.__execute = function __execute(callback, element) {
        var previous, result;

        result = undefined;

        previous  = this.__current;
        this.__current = element;
        this.__state = null;
        if (callback) {
            result = callback.call(this, element.node, this.__leavelist[this.__leavelist.length - 1].node);
        }
        this.__current = previous;

        return result;
    };

    // API:
    // notify control skip / break
    Controller.prototype.notify = function notify(flag) {
        this.__state = flag;
    };

    // API:
    // skip child nodes of current node
    Controller.prototype.skip = function () {
        this.notify(SKIP);
    };

    // API:
    // break traversals
    Controller.prototype['break'] = function () {
        this.notify(BREAK);
    };

    // API:
    // remove node
    Controller.prototype.remove = function () {
        this.notify(REMOVE);
    };

    Controller.prototype.__initialize = function(root, visitor) {
        this.visitor = visitor;
        this.root = root;
        this.__worklist = [];
        this.__leavelist = [];
        this.__current = null;
        this.__state = null;
        this.__fallback = visitor.fallback === 'iteration';
        this.__keys = VisitorKeys;
        if (visitor.keys) {
            this.__keys = extend(objectCreate(this.__keys), visitor.keys);
        }
    };

    function isNode(node) {
        if (node == null) {
            return false;
        }
        return typeof node === 'object' && typeof node.type === 'string';
    }

    function isProperty(nodeType, key) {
        return (nodeType === Syntax.ObjectExpression || nodeType === Syntax.ObjectPattern) && 'properties' === key;
    }

    Controller.prototype.traverse = function traverse(root, visitor) {
        var worklist,
            leavelist,
            element,
            node,
            nodeType,
            ret,
            key,
            current,
            current2,
            candidates,
            candidate,
            sentinel;

        this.__initialize(root, visitor);

        sentinel = {};

        // reference
        worklist = this.__worklist;
        leavelist = this.__leavelist;

        // initialize
        worklist.push(new Element(root, null, null, null));
        leavelist.push(new Element(null, null, null, null));

        while (worklist.length) {
            element = worklist.pop();

            if (element === sentinel) {
                element = leavelist.pop();

                ret = this.__execute(visitor.leave, element);

                if (this.__state === BREAK || ret === BREAK) {
                    return;
                }
                continue;
            }

            if (element.node) {

                ret = this.__execute(visitor.enter, element);

                if (this.__state === BREAK || ret === BREAK) {
                    return;
                }

                worklist.push(sentinel);
                leavelist.push(element);

                if (this.__state === SKIP || ret === SKIP) {
                    continue;
                }

                node = element.node;
                nodeType = element.wrap || node.type;
                candidates = this.__keys[nodeType];
                if (!candidates) {
                    if (this.__fallback) {
                        candidates = objectKeys(node);
                    } else {
                        throw new Error('Unknown node type ' + nodeType + '.');
                    }
                }

                current = candidates.length;
                while ((current -= 1) >= 0) {
                    key = candidates[current];
                    candidate = node[key];
                    if (!candidate) {
                        continue;
                    }

                    if (isArray(candidate)) {
                        current2 = candidate.length;
                        while ((current2 -= 1) >= 0) {
                            if (!candidate[current2]) {
                                continue;
                            }
                            if (isProperty(nodeType, candidates[current])) {
                                element = new Element(candidate[current2], [key, current2], 'Property', null);
                            } else if (isNode(candidate[current2])) {
                                element = new Element(candidate[current2], [key, current2], null, null);
                            } else {
                                continue;
                            }
                            worklist.push(element);
                        }
                    } else if (isNode(candidate)) {
                        worklist.push(new Element(candidate, key, null, null));
                    }
                }
            }
        }
    };

    Controller.prototype.replace = function replace(root, visitor) {
        function removeElem(element) {
            var i,
                key,
                nextElem,
                parent;

            if (element.ref.remove()) {
                // When the reference is an element of an array.
                key = element.ref.key;
                parent = element.ref.parent;

                // If removed from array, then decrease following items' keys.
                i = worklist.length;
                while (i--) {
                    nextElem = worklist[i];
                    if (nextElem.ref && nextElem.ref.parent === parent) {
                        if  (nextElem.ref.key < key) {
                            break;
                        }
                        --nextElem.ref.key;
                    }
                }
            }
        }

        var worklist,
            leavelist,
            node,
            nodeType,
            target,
            element,
            current,
            current2,
            candidates,
            candidate,
            sentinel,
            outer,
            key;

        this.__initialize(root, visitor);

        sentinel = {};

        // reference
        worklist = this.__worklist;
        leavelist = this.__leavelist;

        // initialize
        outer = {
            root: root
        };
        element = new Element(root, null, null, new Reference(outer, 'root'));
        worklist.push(element);
        leavelist.push(element);

        while (worklist.length) {
            element = worklist.pop();

            if (element === sentinel) {
                element = leavelist.pop();

                target = this.__execute(visitor.leave, element);

                // node may be replaced with null,
                // so distinguish between undefined and null in this place
                if (target !== undefined && target !== BREAK && target !== SKIP && target !== REMOVE) {
                    // replace
                    element.ref.replace(target);
                }

                if (this.__state === REMOVE || target === REMOVE) {
                    removeElem(element);
                }

                if (this.__state === BREAK || target === BREAK) {
                    return outer.root;
                }
                continue;
            }

            target = this.__execute(visitor.enter, element);

            // node may be replaced with null,
            // so distinguish between undefined and null in this place
            if (target !== undefined && target !== BREAK && target !== SKIP && target !== REMOVE) {
                // replace
                element.ref.replace(target);
                element.node = target;
            }

            if (this.__state === REMOVE || target === REMOVE) {
                removeElem(element);
                element.node = null;
            }

            if (this.__state === BREAK || target === BREAK) {
                return outer.root;
            }

            // node may be null
            node = element.node;
            if (!node) {
                continue;
            }

            worklist.push(sentinel);
            leavelist.push(element);

            if (this.__state === SKIP || target === SKIP) {
                continue;
            }

            nodeType = element.wrap || node.type;
            candidates = this.__keys[nodeType];
            if (!candidates) {
                if (this.__fallback) {
                    candidates = objectKeys(node);
                } else {
                    throw new Error('Unknown node type ' + nodeType + '.');
                }
            }

            current = candidates.length;
            while ((current -= 1) >= 0) {
                key = candidates[current];
                candidate = node[key];
                if (!candidate) {
                    continue;
                }

                if (isArray(candidate)) {
                    current2 = candidate.length;
                    while ((current2 -= 1) >= 0) {
                        if (!candidate[current2]) {
                            continue;
                        }
                        if (isProperty(nodeType, candidates[current])) {
                            element = new Element(candidate[current2], [key, current2], 'Property', new Reference(candidate, current2));
                        } else if (isNode(candidate[current2])) {
                            element = new Element(candidate[current2], [key, current2], null, new Reference(candidate, current2));
                        } else {
                            continue;
                        }
                        worklist.push(element);
                    }
                } else if (isNode(candidate)) {
                    worklist.push(new Element(candidate, key, null, new Reference(node, key)));
                }
            }
        }

        return outer.root;
    };

    function traverse(root, visitor) {
        var controller = new Controller();
        return controller.traverse(root, visitor);
    }

    function replace(root, visitor) {
        var controller = new Controller();
        return controller.replace(root, visitor);
    }

    function extendCommentRange(comment, tokens) {
        var target;

        target = upperBound(tokens, function search(token) {
            return token.range[0] > comment.range[0];
        });

        comment.extendedRange = [comment.range[0], comment.range[1]];

        if (target !== tokens.length) {
            comment.extendedRange[1] = tokens[target].range[0];
        }

        target -= 1;
        if (target >= 0) {
            comment.extendedRange[0] = tokens[target].range[1];
        }

        return comment;
    }

    function attachComments(tree, providedComments, tokens) {
        // At first, we should calculate extended comment ranges.
        var comments = [], comment, len, i, cursor;

        if (!tree.range) {
            throw new Error('attachComments needs range information');
        }

        // tokens array is empty, we attach comments to tree as 'leadingComments'
        if (!tokens.length) {
            if (providedComments.length) {
                for (i = 0, len = providedComments.length; i < len; i += 1) {
                    comment = deepCopy(providedComments[i]);
                    comment.extendedRange = [0, tree.range[0]];
                    comments.push(comment);
                }
                tree.leadingComments = comments;
            }
            return tree;
        }

        for (i = 0, len = providedComments.length; i < len; i += 1) {
            comments.push(extendCommentRange(deepCopy(providedComments[i]), tokens));
        }

        // This is based on John Freeman's implementation.
        cursor = 0;
        traverse(tree, {
            enter: function (node) {
                var comment;

                while (cursor < comments.length) {
                    comment = comments[cursor];
                    if (comment.extendedRange[1] > node.range[0]) {
                        break;
                    }

                    if (comment.extendedRange[1] === node.range[0]) {
                        if (!node.leadingComments) {
                            node.leadingComments = [];
                        }
                        node.leadingComments.push(comment);
                        comments.splice(cursor, 1);
                    } else {
                        cursor += 1;
                    }
                }

                // already out of owned node
                if (cursor === comments.length) {
                    return VisitorOption.Break;
                }

                if (comments[cursor].extendedRange[0] > node.range[1]) {
                    return VisitorOption.Skip;
                }
            }
        });

        cursor = 0;
        traverse(tree, {
            leave: function (node) {
                var comment;

                while (cursor < comments.length) {
                    comment = comments[cursor];
                    if (node.range[1] < comment.extendedRange[0]) {
                        break;
                    }

                    if (node.range[1] === comment.extendedRange[0]) {
                        if (!node.trailingComments) {
                            node.trailingComments = [];
                        }
                        node.trailingComments.push(comment);
                        comments.splice(cursor, 1);
                    } else {
                        cursor += 1;
                    }
                }

                // already out of owned node
                if (cursor === comments.length) {
                    return VisitorOption.Break;
                }

                if (comments[cursor].extendedRange[0] > node.range[1]) {
                    return VisitorOption.Skip;
                }
            }
        });

        return tree;
    }

    exports.version = '1.8.1-dev';
    exports.Syntax = Syntax;
    exports.traverse = traverse;
    exports.replace = replace;
    exports.attachComments = attachComments;
    exports.VisitorKeys = VisitorKeys;
    exports.VisitorOption = VisitorOption;
    exports.Controller = Controller;
    exports.cloneEnvironment = function () { return clone({}); };

    return exports;
}));
/* vim: set sw=4 ts=4 et tw=80 : */

},{}],65:[function(require,module,exports){
/*
  Copyright (C) 2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS'
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

(function () {
    'use strict';

    function isExpression(node) {
        if (node == null) { return false; }
        switch (node.type) {
            case 'ArrayExpression':
            case 'AssignmentExpression':
            case 'BinaryExpression':
            case 'CallExpression':
            case 'ConditionalExpression':
            case 'FunctionExpression':
            case 'Identifier':
            case 'Literal':
            case 'LogicalExpression':
            case 'MemberExpression':
            case 'NewExpression':
            case 'ObjectExpression':
            case 'SequenceExpression':
            case 'ThisExpression':
            case 'UnaryExpression':
            case 'UpdateExpression':
                return true;
        }
        return false;
    }

    function isIterationStatement(node) {
        if (node == null) { return false; }
        switch (node.type) {
            case 'DoWhileStatement':
            case 'ForInStatement':
            case 'ForStatement':
            case 'WhileStatement':
                return true;
        }
        return false;
    }

    function isStatement(node) {
        if (node == null) { return false; }
        switch (node.type) {
            case 'BlockStatement':
            case 'BreakStatement':
            case 'ContinueStatement':
            case 'DebuggerStatement':
            case 'DoWhileStatement':
            case 'EmptyStatement':
            case 'ExpressionStatement':
            case 'ForInStatement':
            case 'ForStatement':
            case 'IfStatement':
            case 'LabeledStatement':
            case 'ReturnStatement':
            case 'SwitchStatement':
            case 'ThrowStatement':
            case 'TryStatement':
            case 'VariableDeclaration':
            case 'WhileStatement':
            case 'WithStatement':
                return true;
        }
        return false;
    }

    function isSourceElement(node) {
      return isStatement(node) || node != null && node.type === 'FunctionDeclaration';
    }

    function trailingStatement(node) {
        switch (node.type) {
        case 'IfStatement':
            if (node.alternate != null) {
                return node.alternate;
            }
            return node.consequent;

        case 'LabeledStatement':
        case 'ForStatement':
        case 'ForInStatement':
        case 'WhileStatement':
        case 'WithStatement':
            return node.body;
        }
        return null;
    }

    function isProblematicIfStatement(node) {
        var current;

        if (node.type !== 'IfStatement') {
            return false;
        }
        if (node.alternate == null) {
            return false;
        }
        current = node.consequent;
        do {
            if (current.type === 'IfStatement') {
                if (current.alternate == null)  {
                    return true;
                }
            }
            current = trailingStatement(current);
        } while (current);

        return false;
    }

    module.exports = {
        isExpression: isExpression,
        isStatement: isStatement,
        isIterationStatement: isIterationStatement,
        isSourceElement: isSourceElement,
        isProblematicIfStatement: isProblematicIfStatement,

        trailingStatement: trailingStatement
    };
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{}],66:[function(require,module,exports){
/*
  Copyright (C) 2013-2014 Yusuke Suzuki <utatane.tea@gmail.com>
  Copyright (C) 2014 Ivan Nikulin <ifaaan@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

(function () {
    'use strict';

    var Regex, NON_ASCII_WHITESPACES;

    // See `tools/generate-identifier-regex.js`.
    Regex = {
        NonAsciiIdentifierStart: new RegExp('[\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0370-\u0374\u0376\u0377\u037A-\u037D\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u048A-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05D0-\u05EA\u05F0-\u05F2\u0620-\u064A\u066E\u066F\u0671-\u06D3\u06D5\u06E5\u06E6\u06EE\u06EF\u06FA-\u06FC\u06FF\u0710\u0712-\u072F\u074D-\u07A5\u07B1\u07CA-\u07EA\u07F4\u07F5\u07FA\u0800-\u0815\u081A\u0824\u0828\u0840-\u0858\u08A0\u08A2-\u08AC\u0904-\u0939\u093D\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097F\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BD\u09CE\u09DC\u09DD\u09DF-\u09E1\u09F0\u09F1\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A72-\u0A74\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD\u0AD0\u0AE0\u0AE1\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D\u0B5C\u0B5D\u0B5F-\u0B61\u0B71\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BD0\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C33\u0C35-\u0C39\u0C3D\u0C58\u0C59\u0C60\u0C61\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD\u0CDE\u0CE0\u0CE1\u0CF1\u0CF2\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D\u0D4E\u0D60\u0D61\u0D7A-\u0D7F\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0E01-\u0E30\u0E32\u0E33\u0E40-\u0E46\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB0\u0EB2\u0EB3\u0EBD\u0EC0-\u0EC4\u0EC6\u0EDC-\u0EDF\u0F00\u0F40-\u0F47\u0F49-\u0F6C\u0F88-\u0F8C\u1000-\u102A\u103F\u1050-\u1055\u105A-\u105D\u1061\u1065\u1066\u106E-\u1070\u1075-\u1081\u108E\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F0\u1700-\u170C\u170E-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176C\u176E-\u1770\u1780-\u17B3\u17D7\u17DC\u1820-\u1877\u1880-\u18A8\u18AA\u18B0-\u18F5\u1900-\u191C\u1950-\u196D\u1970-\u1974\u1980-\u19AB\u19C1-\u19C7\u1A00-\u1A16\u1A20-\u1A54\u1AA7\u1B05-\u1B33\u1B45-\u1B4B\u1B83-\u1BA0\u1BAE\u1BAF\u1BBA-\u1BE5\u1C00-\u1C23\u1C4D-\u1C4F\u1C5A-\u1C7D\u1CE9-\u1CEC\u1CEE-\u1CF1\u1CF5\u1CF6\u1D00-\u1DBF\u1E00-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u2071\u207F\u2090-\u209C\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CEE\u2CF2\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2E2F\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303C\u3041-\u3096\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCC\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA61F\uA62A\uA62B\uA640-\uA66E\uA67F-\uA697\uA6A0-\uA6EF\uA717-\uA71F\uA722-\uA788\uA78B-\uA78E\uA790-\uA793\uA7A0-\uA7AA\uA7F8-\uA801\uA803-\uA805\uA807-\uA80A\uA80C-\uA822\uA840-\uA873\uA882-\uA8B3\uA8F2-\uA8F7\uA8FB\uA90A-\uA925\uA930-\uA946\uA960-\uA97C\uA984-\uA9B2\uA9CF\uAA00-\uAA28\uAA40-\uAA42\uAA44-\uAA4B\uAA60-\uAA76\uAA7A\uAA80-\uAAAF\uAAB1\uAAB5\uAAB6\uAAB9-\uAABD\uAAC0\uAAC2\uAADB-\uAADD\uAAE0-\uAAEA\uAAF2-\uAAF4\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uABC0-\uABE2\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D\uFB1F-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE70-\uFE74\uFE76-\uFEFC\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]'),
        NonAsciiIdentifierPart: new RegExp('[\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0300-\u0374\u0376\u0377\u037A-\u037D\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u0483-\u0487\u048A-\u0527\u0531-\u0556\u0559\u0561-\u0587\u0591-\u05BD\u05BF\u05C1\u05C2\u05C4\u05C5\u05C7\u05D0-\u05EA\u05F0-\u05F2\u0610-\u061A\u0620-\u0669\u066E-\u06D3\u06D5-\u06DC\u06DF-\u06E8\u06EA-\u06FC\u06FF\u0710-\u074A\u074D-\u07B1\u07C0-\u07F5\u07FA\u0800-\u082D\u0840-\u085B\u08A0\u08A2-\u08AC\u08E4-\u08FE\u0900-\u0963\u0966-\u096F\u0971-\u0977\u0979-\u097F\u0981-\u0983\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BC-\u09C4\u09C7\u09C8\u09CB-\u09CE\u09D7\u09DC\u09DD\u09DF-\u09E3\u09E6-\u09F1\u0A01-\u0A03\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A3C\u0A3E-\u0A42\u0A47\u0A48\u0A4B-\u0A4D\u0A51\u0A59-\u0A5C\u0A5E\u0A66-\u0A75\u0A81-\u0A83\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABC-\u0AC5\u0AC7-\u0AC9\u0ACB-\u0ACD\u0AD0\u0AE0-\u0AE3\u0AE6-\u0AEF\u0B01-\u0B03\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3C-\u0B44\u0B47\u0B48\u0B4B-\u0B4D\u0B56\u0B57\u0B5C\u0B5D\u0B5F-\u0B63\u0B66-\u0B6F\u0B71\u0B82\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BBE-\u0BC2\u0BC6-\u0BC8\u0BCA-\u0BCD\u0BD0\u0BD7\u0BE6-\u0BEF\u0C01-\u0C03\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C33\u0C35-\u0C39\u0C3D-\u0C44\u0C46-\u0C48\u0C4A-\u0C4D\u0C55\u0C56\u0C58\u0C59\u0C60-\u0C63\u0C66-\u0C6F\u0C82\u0C83\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBC-\u0CC4\u0CC6-\u0CC8\u0CCA-\u0CCD\u0CD5\u0CD6\u0CDE\u0CE0-\u0CE3\u0CE6-\u0CEF\u0CF1\u0CF2\u0D02\u0D03\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D-\u0D44\u0D46-\u0D48\u0D4A-\u0D4E\u0D57\u0D60-\u0D63\u0D66-\u0D6F\u0D7A-\u0D7F\u0D82\u0D83\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0DCA\u0DCF-\u0DD4\u0DD6\u0DD8-\u0DDF\u0DF2\u0DF3\u0E01-\u0E3A\u0E40-\u0E4E\u0E50-\u0E59\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB9\u0EBB-\u0EBD\u0EC0-\u0EC4\u0EC6\u0EC8-\u0ECD\u0ED0-\u0ED9\u0EDC-\u0EDF\u0F00\u0F18\u0F19\u0F20-\u0F29\u0F35\u0F37\u0F39\u0F3E-\u0F47\u0F49-\u0F6C\u0F71-\u0F84\u0F86-\u0F97\u0F99-\u0FBC\u0FC6\u1000-\u1049\u1050-\u109D\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u135D-\u135F\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F0\u1700-\u170C\u170E-\u1714\u1720-\u1734\u1740-\u1753\u1760-\u176C\u176E-\u1770\u1772\u1773\u1780-\u17D3\u17D7\u17DC\u17DD\u17E0-\u17E9\u180B-\u180D\u1810-\u1819\u1820-\u1877\u1880-\u18AA\u18B0-\u18F5\u1900-\u191C\u1920-\u192B\u1930-\u193B\u1946-\u196D\u1970-\u1974\u1980-\u19AB\u19B0-\u19C9\u19D0-\u19D9\u1A00-\u1A1B\u1A20-\u1A5E\u1A60-\u1A7C\u1A7F-\u1A89\u1A90-\u1A99\u1AA7\u1B00-\u1B4B\u1B50-\u1B59\u1B6B-\u1B73\u1B80-\u1BF3\u1C00-\u1C37\u1C40-\u1C49\u1C4D-\u1C7D\u1CD0-\u1CD2\u1CD4-\u1CF6\u1D00-\u1DE6\u1DFC-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u200C\u200D\u203F\u2040\u2054\u2071\u207F\u2090-\u209C\u20D0-\u20DC\u20E1\u20E5-\u20F0\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D7F-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2DE0-\u2DFF\u2E2F\u3005-\u3007\u3021-\u302F\u3031-\u3035\u3038-\u303C\u3041-\u3096\u3099\u309A\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCC\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA62B\uA640-\uA66F\uA674-\uA67D\uA67F-\uA697\uA69F-\uA6F1\uA717-\uA71F\uA722-\uA788\uA78B-\uA78E\uA790-\uA793\uA7A0-\uA7AA\uA7F8-\uA827\uA840-\uA873\uA880-\uA8C4\uA8D0-\uA8D9\uA8E0-\uA8F7\uA8FB\uA900-\uA92D\uA930-\uA953\uA960-\uA97C\uA980-\uA9C0\uA9CF-\uA9D9\uAA00-\uAA36\uAA40-\uAA4D\uAA50-\uAA59\uAA60-\uAA76\uAA7A\uAA7B\uAA80-\uAAC2\uAADB-\uAADD\uAAE0-\uAAEF\uAAF2-\uAAF6\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uABC0-\uABEA\uABEC\uABED\uABF0-\uABF9\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE00-\uFE0F\uFE20-\uFE26\uFE33\uFE34\uFE4D-\uFE4F\uFE70-\uFE74\uFE76-\uFEFC\uFF10-\uFF19\uFF21-\uFF3A\uFF3F\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]')
    };

    function isDecimalDigit(ch) {
        return (ch >= 48 && ch <= 57);   // 0..9
    }

    function isHexDigit(ch) {
        return isDecimalDigit(ch) ||    // 0..9
            (97 <= ch && ch <= 102) ||  // a..f
            (65 <= ch && ch <= 70);     // A..F
    }

    function isOctalDigit(ch) {
        return (ch >= 48 && ch <= 55);   // 0..7
    }

    // 7.2 White Space

    NON_ASCII_WHITESPACES = [
        0x1680, 0x180E,
        0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005, 0x2006, 0x2007, 0x2008, 0x2009, 0x200A,
        0x202F, 0x205F,
        0x3000,
        0xFEFF
    ];

    function isWhiteSpace(ch) {
        return (ch === 0x20) || (ch === 0x09) || (ch === 0x0B) || (ch === 0x0C) || (ch === 0xA0) ||
            (ch >= 0x1680 && NON_ASCII_WHITESPACES.indexOf(ch) >= 0);
    }

    // 7.3 Line Terminators

    function isLineTerminator(ch) {
        return (ch === 0x0A) || (ch === 0x0D) || (ch === 0x2028) || (ch === 0x2029);
    }

    // 7.6 Identifier Names and Identifiers

    function isIdentifierStart(ch) {
        return (ch >= 97 && ch <= 122) ||     // a..z
            (ch >= 65 && ch <= 90) ||         // A..Z
            (ch === 36) || (ch === 95) ||     // $ (dollar) and _ (underscore)
            (ch === 92) ||                    // \ (backslash)
            ((ch >= 0x80) && Regex.NonAsciiIdentifierStart.test(String.fromCharCode(ch)));
    }

    function isIdentifierPart(ch) {
        return (ch >= 97 && ch <= 122) ||     // a..z
            (ch >= 65 && ch <= 90) ||         // A..Z
            (ch >= 48 && ch <= 57) ||         // 0..9
            (ch === 36) || (ch === 95) ||     // $ (dollar) and _ (underscore)
            (ch === 92) ||                    // \ (backslash)
            ((ch >= 0x80) && Regex.NonAsciiIdentifierPart.test(String.fromCharCode(ch)));
    }

    module.exports = {
        isDecimalDigit: isDecimalDigit,
        isHexDigit: isHexDigit,
        isOctalDigit: isOctalDigit,
        isWhiteSpace: isWhiteSpace,
        isLineTerminator: isLineTerminator,
        isIdentifierStart: isIdentifierStart,
        isIdentifierPart: isIdentifierPart
    };
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{}],67:[function(require,module,exports){
/*
  Copyright (C) 2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

(function () {
    'use strict';

    var code = require('./code');

    function isStrictModeReservedWordES6(id) {
        switch (id) {
        case 'implements':
        case 'interface':
        case 'package':
        case 'private':
        case 'protected':
        case 'public':
        case 'static':
        case 'let':
            return true;
        default:
            return false;
        }
    }

    function isKeywordES5(id, strict) {
        // yield should not be treated as keyword under non-strict mode.
        if (!strict && id === 'yield') {
            return false;
        }
        return isKeywordES6(id, strict);
    }

    function isKeywordES6(id, strict) {
        if (strict && isStrictModeReservedWordES6(id)) {
            return true;
        }

        switch (id.length) {
        case 2:
            return (id === 'if') || (id === 'in') || (id === 'do');
        case 3:
            return (id === 'var') || (id === 'for') || (id === 'new') || (id === 'try');
        case 4:
            return (id === 'this') || (id === 'else') || (id === 'case') ||
                (id === 'void') || (id === 'with') || (id === 'enum');
        case 5:
            return (id === 'while') || (id === 'break') || (id === 'catch') ||
                (id === 'throw') || (id === 'const') || (id === 'yield') ||
                (id === 'class') || (id === 'super');
        case 6:
            return (id === 'return') || (id === 'typeof') || (id === 'delete') ||
                (id === 'switch') || (id === 'export') || (id === 'import');
        case 7:
            return (id === 'default') || (id === 'finally') || (id === 'extends');
        case 8:
            return (id === 'function') || (id === 'continue') || (id === 'debugger');
        case 10:
            return (id === 'instanceof');
        default:
            return false;
        }
    }

    function isReservedWordES5(id, strict) {
        return id === 'null' || id === 'true' || id === 'false' || isKeywordES5(id, strict);
    }

    function isReservedWordES6(id, strict) {
        return id === 'null' || id === 'true' || id === 'false' || isKeywordES6(id, strict);
    }

    function isRestrictedWord(id) {
        return id === 'eval' || id === 'arguments';
    }

    function isIdentifierName(id) {
        var i, iz, ch;

        if (id.length === 0) {
            return false;
        }

        ch = id.charCodeAt(0);
        if (!code.isIdentifierStart(ch) || ch === 92) {  // \ (backslash)
            return false;
        }

        for (i = 1, iz = id.length; i < iz; ++i) {
            ch = id.charCodeAt(i);
            if (!code.isIdentifierPart(ch) || ch === 92) {  // \ (backslash)
                return false;
            }
        }
        return true;
    }

    function isIdentifierES5(id, strict) {
        return isIdentifierName(id) && !isReservedWordES5(id, strict);
    }

    function isIdentifierES6(id, strict) {
        return isIdentifierName(id) && !isReservedWordES6(id, strict);
    }

    module.exports = {
        isKeywordES5: isKeywordES5,
        isKeywordES6: isKeywordES6,
        isReservedWordES5: isReservedWordES5,
        isReservedWordES6: isReservedWordES6,
        isRestrictedWord: isRestrictedWord,
        isIdentifierName: isIdentifierName,
        isIdentifierES5: isIdentifierES5,
        isIdentifierES6: isIdentifierES6
    };
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"./code":66}],68:[function(require,module,exports){
/*
  Copyright (C) 2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/


(function () {
    'use strict';

    exports.ast = require('./ast');
    exports.code = require('./code');
    exports.keyword = require('./keyword');
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"./ast":65,"./code":66,"./keyword":67}],69:[function(require,module,exports){
/*
 * Copyright 2009-2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE.txt or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
exports.SourceMapGenerator = require('./source-map/source-map-generator').SourceMapGenerator;
exports.SourceMapConsumer = require('./source-map/source-map-consumer').SourceMapConsumer;
exports.SourceNode = require('./source-map/source-node').SourceNode;

},{"./source-map/source-map-consumer":75,"./source-map/source-map-generator":76,"./source-map/source-node":77}],70:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
if (typeof define !== 'function') {
    var define = require('amdefine')(module, require);
}
define(function (require, exports, module) {

  var util = require('./util');

  /**
   * A data structure which is a combination of an array and a set. Adding a new
   * member is O(1), testing for membership is O(1), and finding the index of an
   * element is O(1). Removing elements from the set is not supported. Only
   * strings are supported for membership.
   */
  function ArraySet() {
    this._array = [];
    this._set = {};
  }

  /**
   * Static method for creating ArraySet instances from an existing array.
   */
  ArraySet.fromArray = function ArraySet_fromArray(aArray, aAllowDuplicates) {
    var set = new ArraySet();
    for (var i = 0, len = aArray.length; i < len; i++) {
      set.add(aArray[i], aAllowDuplicates);
    }
    return set;
  };

  /**
   * Add the given string to this set.
   *
   * @param String aStr
   */
  ArraySet.prototype.add = function ArraySet_add(aStr, aAllowDuplicates) {
    var isDuplicate = this.has(aStr);
    var idx = this._array.length;
    if (!isDuplicate || aAllowDuplicates) {
      this._array.push(aStr);
    }
    if (!isDuplicate) {
      this._set[util.toSetString(aStr)] = idx;
    }
  };

  /**
   * Is the given string a member of this set?
   *
   * @param String aStr
   */
  ArraySet.prototype.has = function ArraySet_has(aStr) {
    return Object.prototype.hasOwnProperty.call(this._set,
                                                util.toSetString(aStr));
  };

  /**
   * What is the index of the given string in the array?
   *
   * @param String aStr
   */
  ArraySet.prototype.indexOf = function ArraySet_indexOf(aStr) {
    if (this.has(aStr)) {
      return this._set[util.toSetString(aStr)];
    }
    throw new Error('"' + aStr + '" is not in the set.');
  };

  /**
   * What is the element at the given index?
   *
   * @param Number aIdx
   */
  ArraySet.prototype.at = function ArraySet_at(aIdx) {
    if (aIdx >= 0 && aIdx < this._array.length) {
      return this._array[aIdx];
    }
    throw new Error('No element indexed by ' + aIdx);
  };

  /**
   * Returns the array representation of this set (which has the proper indices
   * indicated by indexOf). Note that this is a copy of the internal array used
   * for storing the members so that no one can mess with internal state.
   */
  ArraySet.prototype.toArray = function ArraySet_toArray() {
    return this._array.slice();
  };

  exports.ArraySet = ArraySet;

});

},{"./util":78,"amdefine":79}],71:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 *
 * Based on the Base 64 VLQ implementation in Closure Compiler:
 * https://code.google.com/p/closure-compiler/source/browse/trunk/src/com/google/debugging/sourcemap/Base64VLQ.java
 *
 * Copyright 2011 The Closure Compiler Authors. All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above
 *    copyright notice, this list of conditions and the following
 *    disclaimer in the documentation and/or other materials provided
 *    with the distribution.
 *  * Neither the name of Google Inc. nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
if (typeof define !== 'function') {
    var define = require('amdefine')(module, require);
}
define(function (require, exports, module) {

  var base64 = require('./base64');

  // A single base 64 digit can contain 6 bits of data. For the base 64 variable
  // length quantities we use in the source map spec, the first bit is the sign,
  // the next four bits are the actual value, and the 6th bit is the
  // continuation bit. The continuation bit tells us whether there are more
  // digits in this value following this digit.
  //
  //   Continuation
  //   |    Sign
  //   |    |
  //   V    V
  //   101011

  var VLQ_BASE_SHIFT = 5;

  // binary: 100000
  var VLQ_BASE = 1 << VLQ_BASE_SHIFT;

  // binary: 011111
  var VLQ_BASE_MASK = VLQ_BASE - 1;

  // binary: 100000
  var VLQ_CONTINUATION_BIT = VLQ_BASE;

  /**
   * Converts from a two-complement value to a value where the sign bit is
   * placed in the least significant bit.  For example, as decimals:
   *   1 becomes 2 (10 binary), -1 becomes 3 (11 binary)
   *   2 becomes 4 (100 binary), -2 becomes 5 (101 binary)
   */
  function toVLQSigned(aValue) {
    return aValue < 0
      ? ((-aValue) << 1) + 1
      : (aValue << 1) + 0;
  }

  /**
   * Converts to a two-complement value from a value where the sign bit is
   * placed in the least significant bit.  For example, as decimals:
   *   2 (10 binary) becomes 1, 3 (11 binary) becomes -1
   *   4 (100 binary) becomes 2, 5 (101 binary) becomes -2
   */
  function fromVLQSigned(aValue) {
    var isNegative = (aValue & 1) === 1;
    var shifted = aValue >> 1;
    return isNegative
      ? -shifted
      : shifted;
  }

  /**
   * Returns the base 64 VLQ encoded value.
   */
  exports.encode = function base64VLQ_encode(aValue) {
    var encoded = "";
    var digit;

    var vlq = toVLQSigned(aValue);

    do {
      digit = vlq & VLQ_BASE_MASK;
      vlq >>>= VLQ_BASE_SHIFT;
      if (vlq > 0) {
        // There are still more digits in this value, so we must make sure the
        // continuation bit is marked.
        digit |= VLQ_CONTINUATION_BIT;
      }
      encoded += base64.encode(digit);
    } while (vlq > 0);

    return encoded;
  };

  /**
   * Decodes the next base 64 VLQ value from the given string and returns the
   * value and the rest of the string via the out parameter.
   */
  exports.decode = function base64VLQ_decode(aStr, aOutParam) {
    var i = 0;
    var strLen = aStr.length;
    var result = 0;
    var shift = 0;
    var continuation, digit;

    do {
      if (i >= strLen) {
        throw new Error("Expected more digits in base 64 VLQ value.");
      }
      digit = base64.decode(aStr.charAt(i++));
      continuation = !!(digit & VLQ_CONTINUATION_BIT);
      digit &= VLQ_BASE_MASK;
      result = result + (digit << shift);
      shift += VLQ_BASE_SHIFT;
    } while (continuation);

    aOutParam.value = fromVLQSigned(result);
    aOutParam.rest = aStr.slice(i);
  };

});

},{"./base64":72,"amdefine":79}],72:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
if (typeof define !== 'function') {
    var define = require('amdefine')(module, require);
}
define(function (require, exports, module) {

  var charToIntMap = {};
  var intToCharMap = {};

  'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
    .split('')
    .forEach(function (ch, index) {
      charToIntMap[ch] = index;
      intToCharMap[index] = ch;
    });

  /**
   * Encode an integer in the range of 0 to 63 to a single base 64 digit.
   */
  exports.encode = function base64_encode(aNumber) {
    if (aNumber in intToCharMap) {
      return intToCharMap[aNumber];
    }
    throw new TypeError("Must be between 0 and 63: " + aNumber);
  };

  /**
   * Decode a single base 64 digit to an integer.
   */
  exports.decode = function base64_decode(aChar) {
    if (aChar in charToIntMap) {
      return charToIntMap[aChar];
    }
    throw new TypeError("Not a valid base 64 digit: " + aChar);
  };

});

},{"amdefine":79}],73:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
if (typeof define !== 'function') {
    var define = require('amdefine')(module, require);
}
define(function (require, exports, module) {

  /**
   * Recursive implementation of binary search.
   *
   * @param aLow Indices here and lower do not contain the needle.
   * @param aHigh Indices here and higher do not contain the needle.
   * @param aNeedle The element being searched for.
   * @param aHaystack The non-empty array being searched.
   * @param aCompare Function which takes two elements and returns -1, 0, or 1.
   */
  function recursiveSearch(aLow, aHigh, aNeedle, aHaystack, aCompare) {
    // This function terminates when one of the following is true:
    //
    //   1. We find the exact element we are looking for.
    //
    //   2. We did not find the exact element, but we can return the index of
    //      the next closest element that is less than that element.
    //
    //   3. We did not find the exact element, and there is no next-closest
    //      element which is less than the one we are searching for, so we
    //      return -1.
    var mid = Math.floor((aHigh - aLow) / 2) + aLow;
    var cmp = aCompare(aNeedle, aHaystack[mid], true);
    if (cmp === 0) {
      // Found the element we are looking for.
      return mid;
    }
    else if (cmp > 0) {
      // aHaystack[mid] is greater than our needle.
      if (aHigh - mid > 1) {
        // The element is in the upper half.
        return recursiveSearch(mid, aHigh, aNeedle, aHaystack, aCompare);
      }
      // We did not find an exact match, return the next closest one
      // (termination case 2).
      return mid;
    }
    else {
      // aHaystack[mid] is less than our needle.
      if (mid - aLow > 1) {
        // The element is in the lower half.
        return recursiveSearch(aLow, mid, aNeedle, aHaystack, aCompare);
      }
      // The exact needle element was not found in this haystack. Determine if
      // we are in termination case (2) or (3) and return the appropriate thing.
      return aLow < 0 ? -1 : aLow;
    }
  }

  /**
   * This is an implementation of binary search which will always try and return
   * the index of next lowest value checked if there is no exact hit. This is
   * because mappings between original and generated line/col pairs are single
   * points, and there is an implicit region between each of them, so a miss
   * just means that you aren't on the very start of a region.
   *
   * @param aNeedle The element you are looking for.
   * @param aHaystack The array that is being searched.
   * @param aCompare A function which takes the needle and an element in the
   *     array and returns -1, 0, or 1 depending on whether the needle is less
   *     than, equal to, or greater than the element, respectively.
   */
  exports.search = function search(aNeedle, aHaystack, aCompare) {
    if (aHaystack.length === 0) {
      return -1;
    }
    return recursiveSearch(-1, aHaystack.length, aNeedle, aHaystack, aCompare)
  };

});

},{"amdefine":79}],74:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2014 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
if (typeof define !== 'function') {
    var define = require('amdefine')(module, require);
}
define(function (require, exports, module) {

  var util = require('./util');

  /**
   * Determine whether mappingB is after mappingA with respect to generated
   * position.
   */
  function generatedPositionAfter(mappingA, mappingB) {
    // Optimized for most common case
    var lineA = mappingA.generatedLine;
    var lineB = mappingB.generatedLine;
    var columnA = mappingA.generatedColumn;
    var columnB = mappingB.generatedColumn;
    return lineB > lineA || lineB == lineA && columnB >= columnA ||
           util.compareByGeneratedPositions(mappingA, mappingB) <= 0;
  }

  /**
   * A data structure to provide a sorted view of accumulated mappings in a
   * performance conscious manner. It trades a neglibable overhead in general
   * case for a large speedup in case of mappings being added in order.
   */
  function MappingList() {
    this._array = [];
    this._sorted = true;
    // Serves as infimum
    this._last = {generatedLine: -1, generatedColumn: 0};
  }

  /**
   * Iterate through internal items. This method takes the same arguments that
   * `Array.prototype.forEach` takes.
   *
   * NOTE: The order of the mappings is NOT guaranteed.
   */
  MappingList.prototype.unsortedForEach =
    function MappingList_forEach(aCallback, aThisArg) {
      this._array.forEach(aCallback, aThisArg);
    };

  /**
   * Add the given source mapping.
   *
   * @param Object aMapping
   */
  MappingList.prototype.add = function MappingList_add(aMapping) {
    var mapping;
    if (generatedPositionAfter(this._last, aMapping)) {
      this._last = aMapping;
      this._array.push(aMapping);
    } else {
      this._sorted = false;
      this._array.push(aMapping);
    }
  };

  /**
   * Returns the flat, sorted array of mappings. The mappings are sorted by
   * generated position.
   *
   * WARNING: This method returns internal data without copying, for
   * performance. The return value must NOT be mutated, and should be treated as
   * an immutable borrow. If you want to take ownership, you must make your own
   * copy.
   */
  MappingList.prototype.toArray = function MappingList_toArray() {
    if (!this._sorted) {
      this._array.sort(util.compareByGeneratedPositions);
      this._sorted = true;
    }
    return this._array;
  };

  exports.MappingList = MappingList;

});

},{"./util":78,"amdefine":79}],75:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
if (typeof define !== 'function') {
    var define = require('amdefine')(module, require);
}
define(function (require, exports, module) {

  var util = require('./util');
  var binarySearch = require('./binary-search');
  var ArraySet = require('./array-set').ArraySet;
  var base64VLQ = require('./base64-vlq');

  /**
   * A SourceMapConsumer instance represents a parsed source map which we can
   * query for information about the original file positions by giving it a file
   * position in the generated source.
   *
   * The only parameter is the raw source map (either as a JSON string, or
   * already parsed to an object). According to the spec, source maps have the
   * following attributes:
   *
   *   - version: Which version of the source map spec this map is following.
   *   - sources: An array of URLs to the original source files.
   *   - names: An array of identifiers which can be referrenced by individual mappings.
   *   - sourceRoot: Optional. The URL root from which all sources are relative.
   *   - sourcesContent: Optional. An array of contents of the original source files.
   *   - mappings: A string of base64 VLQs which contain the actual mappings.
   *   - file: Optional. The generated file this source map is associated with.
   *
   * Here is an example source map, taken from the source map spec[0]:
   *
   *     {
   *       version : 3,
   *       file: "out.js",
   *       sourceRoot : "",
   *       sources: ["foo.js", "bar.js"],
   *       names: ["src", "maps", "are", "fun"],
   *       mappings: "AA,AB;;ABCDE;"
   *     }
   *
   * [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit?pli=1#
   */
  function SourceMapConsumer(aSourceMap) {
    var sourceMap = aSourceMap;
    if (typeof aSourceMap === 'string') {
      sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
    }

    var version = util.getArg(sourceMap, 'version');
    var sources = util.getArg(sourceMap, 'sources');
    // Sass 3.3 leaves out the 'names' array, so we deviate from the spec (which
    // requires the array) to play nice here.
    var names = util.getArg(sourceMap, 'names', []);
    var sourceRoot = util.getArg(sourceMap, 'sourceRoot', null);
    var sourcesContent = util.getArg(sourceMap, 'sourcesContent', null);
    var mappings = util.getArg(sourceMap, 'mappings');
    var file = util.getArg(sourceMap, 'file', null);

    // Once again, Sass deviates from the spec and supplies the version as a
    // string rather than a number, so we use loose equality checking here.
    if (version != this._version) {
      throw new Error('Unsupported version: ' + version);
    }

    // Some source maps produce relative source paths like "./foo.js" instead of
    // "foo.js".  Normalize these first so that future comparisons will succeed.
    // See bugzil.la/1090768.
    sources = sources.map(util.normalize);

    // Pass `true` below to allow duplicate names and sources. While source maps
    // are intended to be compressed and deduplicated, the TypeScript compiler
    // sometimes generates source maps with duplicates in them. See Github issue
    // #72 and bugzil.la/889492.
    this._names = ArraySet.fromArray(names, true);
    this._sources = ArraySet.fromArray(sources, true);

    this.sourceRoot = sourceRoot;
    this.sourcesContent = sourcesContent;
    this._mappings = mappings;
    this.file = file;
  }

  /**
   * Create a SourceMapConsumer from a SourceMapGenerator.
   *
   * @param SourceMapGenerator aSourceMap
   *        The source map that will be consumed.
   * @returns SourceMapConsumer
   */
  SourceMapConsumer.fromSourceMap =
    function SourceMapConsumer_fromSourceMap(aSourceMap) {
      var smc = Object.create(SourceMapConsumer.prototype);

      smc._names = ArraySet.fromArray(aSourceMap._names.toArray(), true);
      smc._sources = ArraySet.fromArray(aSourceMap._sources.toArray(), true);
      smc.sourceRoot = aSourceMap._sourceRoot;
      smc.sourcesContent = aSourceMap._generateSourcesContent(smc._sources.toArray(),
                                                              smc.sourceRoot);
      smc.file = aSourceMap._file;

      smc.__generatedMappings = aSourceMap._mappings.toArray().slice();
      smc.__originalMappings = aSourceMap._mappings.toArray().slice()
        .sort(util.compareByOriginalPositions);

      return smc;
    };

  /**
   * The version of the source mapping spec that we are consuming.
   */
  SourceMapConsumer.prototype._version = 3;

  /**
   * The list of original sources.
   */
  Object.defineProperty(SourceMapConsumer.prototype, 'sources', {
    get: function () {
      return this._sources.toArray().map(function (s) {
        return this.sourceRoot != null ? util.join(this.sourceRoot, s) : s;
      }, this);
    }
  });

  // `__generatedMappings` and `__originalMappings` are arrays that hold the
  // parsed mapping coordinates from the source map's "mappings" attribute. They
  // are lazily instantiated, accessed via the `_generatedMappings` and
  // `_originalMappings` getters respectively, and we only parse the mappings
  // and create these arrays once queried for a source location. We jump through
  // these hoops because there can be many thousands of mappings, and parsing
  // them is expensive, so we only want to do it if we must.
  //
  // Each object in the arrays is of the form:
  //
  //     {
  //       generatedLine: The line number in the generated code,
  //       generatedColumn: The column number in the generated code,
  //       source: The path to the original source file that generated this
  //               chunk of code,
  //       originalLine: The line number in the original source that
  //                     corresponds to this chunk of generated code,
  //       originalColumn: The column number in the original source that
  //                       corresponds to this chunk of generated code,
  //       name: The name of the original symbol which generated this chunk of
  //             code.
  //     }
  //
  // All properties except for `generatedLine` and `generatedColumn` can be
  // `null`.
  //
  // `_generatedMappings` is ordered by the generated positions.
  //
  // `_originalMappings` is ordered by the original positions.

  SourceMapConsumer.prototype.__generatedMappings = null;
  Object.defineProperty(SourceMapConsumer.prototype, '_generatedMappings', {
    get: function () {
      if (!this.__generatedMappings) {
        this.__generatedMappings = [];
        this.__originalMappings = [];
        this._parseMappings(this._mappings, this.sourceRoot);
      }

      return this.__generatedMappings;
    }
  });

  SourceMapConsumer.prototype.__originalMappings = null;
  Object.defineProperty(SourceMapConsumer.prototype, '_originalMappings', {
    get: function () {
      if (!this.__originalMappings) {
        this.__generatedMappings = [];
        this.__originalMappings = [];
        this._parseMappings(this._mappings, this.sourceRoot);
      }

      return this.__originalMappings;
    }
  });

  SourceMapConsumer.prototype._nextCharIsMappingSeparator =
    function SourceMapConsumer_nextCharIsMappingSeparator(aStr) {
      var c = aStr.charAt(0);
      return c === ";" || c === ",";
    };

  /**
   * Parse the mappings in a string in to a data structure which we can easily
   * query (the ordered arrays in the `this.__generatedMappings` and
   * `this.__originalMappings` properties).
   */
  SourceMapConsumer.prototype._parseMappings =
    function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
      var generatedLine = 1;
      var previousGeneratedColumn = 0;
      var previousOriginalLine = 0;
      var previousOriginalColumn = 0;
      var previousSource = 0;
      var previousName = 0;
      var str = aStr;
      var temp = {};
      var mapping;

      while (str.length > 0) {
        if (str.charAt(0) === ';') {
          generatedLine++;
          str = str.slice(1);
          previousGeneratedColumn = 0;
        }
        else if (str.charAt(0) === ',') {
          str = str.slice(1);
        }
        else {
          mapping = {};
          mapping.generatedLine = generatedLine;

          // Generated column.
          base64VLQ.decode(str, temp);
          mapping.generatedColumn = previousGeneratedColumn + temp.value;
          previousGeneratedColumn = mapping.generatedColumn;
          str = temp.rest;

          if (str.length > 0 && !this._nextCharIsMappingSeparator(str)) {
            // Original source.
            base64VLQ.decode(str, temp);
            mapping.source = this._sources.at(previousSource + temp.value);
            previousSource += temp.value;
            str = temp.rest;
            if (str.length === 0 || this._nextCharIsMappingSeparator(str)) {
              throw new Error('Found a source, but no line and column');
            }

            // Original line.
            base64VLQ.decode(str, temp);
            mapping.originalLine = previousOriginalLine + temp.value;
            previousOriginalLine = mapping.originalLine;
            // Lines are stored 0-based
            mapping.originalLine += 1;
            str = temp.rest;
            if (str.length === 0 || this._nextCharIsMappingSeparator(str)) {
              throw new Error('Found a source and line, but no column');
            }

            // Original column.
            base64VLQ.decode(str, temp);
            mapping.originalColumn = previousOriginalColumn + temp.value;
            previousOriginalColumn = mapping.originalColumn;
            str = temp.rest;

            if (str.length > 0 && !this._nextCharIsMappingSeparator(str)) {
              // Original name.
              base64VLQ.decode(str, temp);
              mapping.name = this._names.at(previousName + temp.value);
              previousName += temp.value;
              str = temp.rest;
            }
          }

          this.__generatedMappings.push(mapping);
          if (typeof mapping.originalLine === 'number') {
            this.__originalMappings.push(mapping);
          }
        }
      }

      this.__generatedMappings.sort(util.compareByGeneratedPositions);
      this.__originalMappings.sort(util.compareByOriginalPositions);
    };

  /**
   * Find the mapping that best matches the hypothetical "needle" mapping that
   * we are searching for in the given "haystack" of mappings.
   */
  SourceMapConsumer.prototype._findMapping =
    function SourceMapConsumer_findMapping(aNeedle, aMappings, aLineName,
                                           aColumnName, aComparator) {
      // To return the position we are searching for, we must first find the
      // mapping for the given position and then return the opposite position it
      // points to. Because the mappings are sorted, we can use binary search to
      // find the best mapping.

      if (aNeedle[aLineName] <= 0) {
        throw new TypeError('Line must be greater than or equal to 1, got '
                            + aNeedle[aLineName]);
      }
      if (aNeedle[aColumnName] < 0) {
        throw new TypeError('Column must be greater than or equal to 0, got '
                            + aNeedle[aColumnName]);
      }

      return binarySearch.search(aNeedle, aMappings, aComparator);
    };

  /**
   * Compute the last column for each generated mapping. The last column is
   * inclusive.
   */
  SourceMapConsumer.prototype.computeColumnSpans =
    function SourceMapConsumer_computeColumnSpans() {
      for (var index = 0; index < this._generatedMappings.length; ++index) {
        var mapping = this._generatedMappings[index];

        // Mappings do not contain a field for the last generated columnt. We
        // can come up with an optimistic estimate, however, by assuming that
        // mappings are contiguous (i.e. given two consecutive mappings, the
        // first mapping ends where the second one starts).
        if (index + 1 < this._generatedMappings.length) {
          var nextMapping = this._generatedMappings[index + 1];

          if (mapping.generatedLine === nextMapping.generatedLine) {
            mapping.lastGeneratedColumn = nextMapping.generatedColumn - 1;
            continue;
          }
        }

        // The last mapping for each line spans the entire line.
        mapping.lastGeneratedColumn = Infinity;
      }
    };

  /**
   * Returns the original source, line, and column information for the generated
   * source's line and column positions provided. The only argument is an object
   * with the following properties:
   *
   *   - line: The line number in the generated source.
   *   - column: The column number in the generated source.
   *
   * and an object is returned with the following properties:
   *
   *   - source: The original source file, or null.
   *   - line: The line number in the original source, or null.
   *   - column: The column number in the original source, or null.
   *   - name: The original identifier, or null.
   */
  SourceMapConsumer.prototype.originalPositionFor =
    function SourceMapConsumer_originalPositionFor(aArgs) {
      var needle = {
        generatedLine: util.getArg(aArgs, 'line'),
        generatedColumn: util.getArg(aArgs, 'column')
      };

      var index = this._findMapping(needle,
                                    this._generatedMappings,
                                    "generatedLine",
                                    "generatedColumn",
                                    util.compareByGeneratedPositions);

      if (index >= 0) {
        var mapping = this._generatedMappings[index];

        if (mapping.generatedLine === needle.generatedLine) {
          var source = util.getArg(mapping, 'source', null);
          if (source != null && this.sourceRoot != null) {
            source = util.join(this.sourceRoot, source);
          }
          return {
            source: source,
            line: util.getArg(mapping, 'originalLine', null),
            column: util.getArg(mapping, 'originalColumn', null),
            name: util.getArg(mapping, 'name', null)
          };
        }
      }

      return {
        source: null,
        line: null,
        column: null,
        name: null
      };
    };

  /**
   * Returns the original source content. The only argument is the url of the
   * original source file. Returns null if no original source content is
   * availible.
   */
  SourceMapConsumer.prototype.sourceContentFor =
    function SourceMapConsumer_sourceContentFor(aSource) {
      if (!this.sourcesContent) {
        return null;
      }

      if (this.sourceRoot != null) {
        aSource = util.relative(this.sourceRoot, aSource);
      }

      if (this._sources.has(aSource)) {
        return this.sourcesContent[this._sources.indexOf(aSource)];
      }

      var url;
      if (this.sourceRoot != null
          && (url = util.urlParse(this.sourceRoot))) {
        // XXX: file:// URIs and absolute paths lead to unexpected behavior for
        // many users. We can help them out when they expect file:// URIs to
        // behave like it would if they were running a local HTTP server. See
        // https://bugzilla.mozilla.org/show_bug.cgi?id=885597.
        var fileUriAbsPath = aSource.replace(/^file:\/\//, "");
        if (url.scheme == "file"
            && this._sources.has(fileUriAbsPath)) {
          return this.sourcesContent[this._sources.indexOf(fileUriAbsPath)]
        }

        if ((!url.path || url.path == "/")
            && this._sources.has("/" + aSource)) {
          return this.sourcesContent[this._sources.indexOf("/" + aSource)];
        }
      }

      throw new Error('"' + aSource + '" is not in the SourceMap.');
    };

  /**
   * Returns the generated line and column information for the original source,
   * line, and column positions provided. The only argument is an object with
   * the following properties:
   *
   *   - source: The filename of the original source.
   *   - line: The line number in the original source.
   *   - column: The column number in the original source.
   *
   * and an object is returned with the following properties:
   *
   *   - line: The line number in the generated source, or null.
   *   - column: The column number in the generated source, or null.
   */
  SourceMapConsumer.prototype.generatedPositionFor =
    function SourceMapConsumer_generatedPositionFor(aArgs) {
      var needle = {
        source: util.getArg(aArgs, 'source'),
        originalLine: util.getArg(aArgs, 'line'),
        originalColumn: util.getArg(aArgs, 'column')
      };

      if (this.sourceRoot != null) {
        needle.source = util.relative(this.sourceRoot, needle.source);
      }

      var index = this._findMapping(needle,
                                    this._originalMappings,
                                    "originalLine",
                                    "originalColumn",
                                    util.compareByOriginalPositions);

      if (index >= 0) {
        var mapping = this._originalMappings[index];

        return {
          line: util.getArg(mapping, 'generatedLine', null),
          column: util.getArg(mapping, 'generatedColumn', null),
          lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
        };
      }

      return {
        line: null,
        column: null,
        lastColumn: null
      };
    };

  /**
   * Returns all generated line and column information for the original source
   * and line provided. The only argument is an object with the following
   * properties:
   *
   *   - source: The filename of the original source.
   *   - line: The line number in the original source.
   *
   * and an array of objects is returned, each with the following properties:
   *
   *   - line: The line number in the generated source, or null.
   *   - column: The column number in the generated source, or null.
   */
  SourceMapConsumer.prototype.allGeneratedPositionsFor =
    function SourceMapConsumer_allGeneratedPositionsFor(aArgs) {
      // When there is no exact match, SourceMapConsumer.prototype._findMapping
      // returns the index of the closest mapping less than the needle. By
      // setting needle.originalColumn to Infinity, we thus find the last
      // mapping for the given line, provided such a mapping exists.
      var needle = {
        source: util.getArg(aArgs, 'source'),
        originalLine: util.getArg(aArgs, 'line'),
        originalColumn: Infinity
      };

      if (this.sourceRoot != null) {
        needle.source = util.relative(this.sourceRoot, needle.source);
      }

      var mappings = [];

      var index = this._findMapping(needle,
                                    this._originalMappings,
                                    "originalLine",
                                    "originalColumn",
                                    util.compareByOriginalPositions);
      if (index >= 0) {
        var mapping = this._originalMappings[index];

        while (mapping && mapping.originalLine === needle.originalLine) {
          mappings.push({
            line: util.getArg(mapping, 'generatedLine', null),
            column: util.getArg(mapping, 'generatedColumn', null),
            lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
          });

          mapping = this._originalMappings[--index];
        }
      }

      return mappings.reverse();
    };

  SourceMapConsumer.GENERATED_ORDER = 1;
  SourceMapConsumer.ORIGINAL_ORDER = 2;

  /**
   * Iterate over each mapping between an original source/line/column and a
   * generated line/column in this source map.
   *
   * @param Function aCallback
   *        The function that is called with each mapping.
   * @param Object aContext
   *        Optional. If specified, this object will be the value of `this` every
   *        time that `aCallback` is called.
   * @param aOrder
   *        Either `SourceMapConsumer.GENERATED_ORDER` or
   *        `SourceMapConsumer.ORIGINAL_ORDER`. Specifies whether you want to
   *        iterate over the mappings sorted by the generated file's line/column
   *        order or the original's source/line/column order, respectively. Defaults to
   *        `SourceMapConsumer.GENERATED_ORDER`.
   */
  SourceMapConsumer.prototype.eachMapping =
    function SourceMapConsumer_eachMapping(aCallback, aContext, aOrder) {
      var context = aContext || null;
      var order = aOrder || SourceMapConsumer.GENERATED_ORDER;

      var mappings;
      switch (order) {
      case SourceMapConsumer.GENERATED_ORDER:
        mappings = this._generatedMappings;
        break;
      case SourceMapConsumer.ORIGINAL_ORDER:
        mappings = this._originalMappings;
        break;
      default:
        throw new Error("Unknown order of iteration.");
      }

      var sourceRoot = this.sourceRoot;
      mappings.map(function (mapping) {
        var source = mapping.source;
        if (source != null && sourceRoot != null) {
          source = util.join(sourceRoot, source);
        }
        return {
          source: source,
          generatedLine: mapping.generatedLine,
          generatedColumn: mapping.generatedColumn,
          originalLine: mapping.originalLine,
          originalColumn: mapping.originalColumn,
          name: mapping.name
        };
      }).forEach(aCallback, context);
    };

  exports.SourceMapConsumer = SourceMapConsumer;

});

},{"./array-set":70,"./base64-vlq":71,"./binary-search":73,"./util":78,"amdefine":79}],76:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
if (typeof define !== 'function') {
    var define = require('amdefine')(module, require);
}
define(function (require, exports, module) {

  var base64VLQ = require('./base64-vlq');
  var util = require('./util');
  var ArraySet = require('./array-set').ArraySet;
  var MappingList = require('./mapping-list').MappingList;

  /**
   * An instance of the SourceMapGenerator represents a source map which is
   * being built incrementally. You may pass an object with the following
   * properties:
   *
   *   - file: The filename of the generated source.
   *   - sourceRoot: A root for all relative URLs in this source map.
   */
  function SourceMapGenerator(aArgs) {
    if (!aArgs) {
      aArgs = {};
    }
    this._file = util.getArg(aArgs, 'file', null);
    this._sourceRoot = util.getArg(aArgs, 'sourceRoot', null);
    this._skipValidation = util.getArg(aArgs, 'skipValidation', false);
    this._sources = new ArraySet();
    this._names = new ArraySet();
    this._mappings = new MappingList();
    this._sourcesContents = null;
  }

  SourceMapGenerator.prototype._version = 3;

  /**
   * Creates a new SourceMapGenerator based on a SourceMapConsumer
   *
   * @param aSourceMapConsumer The SourceMap.
   */
  SourceMapGenerator.fromSourceMap =
    function SourceMapGenerator_fromSourceMap(aSourceMapConsumer) {
      var sourceRoot = aSourceMapConsumer.sourceRoot;
      var generator = new SourceMapGenerator({
        file: aSourceMapConsumer.file,
        sourceRoot: sourceRoot
      });
      aSourceMapConsumer.eachMapping(function (mapping) {
        var newMapping = {
          generated: {
            line: mapping.generatedLine,
            column: mapping.generatedColumn
          }
        };

        if (mapping.source != null) {
          newMapping.source = mapping.source;
          if (sourceRoot != null) {
            newMapping.source = util.relative(sourceRoot, newMapping.source);
          }

          newMapping.original = {
            line: mapping.originalLine,
            column: mapping.originalColumn
          };

          if (mapping.name != null) {
            newMapping.name = mapping.name;
          }
        }

        generator.addMapping(newMapping);
      });
      aSourceMapConsumer.sources.forEach(function (sourceFile) {
        var content = aSourceMapConsumer.sourceContentFor(sourceFile);
        if (content != null) {
          generator.setSourceContent(sourceFile, content);
        }
      });
      return generator;
    };

  /**
   * Add a single mapping from original source line and column to the generated
   * source's line and column for this source map being created. The mapping
   * object should have the following properties:
   *
   *   - generated: An object with the generated line and column positions.
   *   - original: An object with the original line and column positions.
   *   - source: The original source file (relative to the sourceRoot).
   *   - name: An optional original token name for this mapping.
   */
  SourceMapGenerator.prototype.addMapping =
    function SourceMapGenerator_addMapping(aArgs) {
      var generated = util.getArg(aArgs, 'generated');
      var original = util.getArg(aArgs, 'original', null);
      var source = util.getArg(aArgs, 'source', null);
      var name = util.getArg(aArgs, 'name', null);

      if (!this._skipValidation) {
        this._validateMapping(generated, original, source, name);
      }

      if (source != null && !this._sources.has(source)) {
        this._sources.add(source);
      }

      if (name != null && !this._names.has(name)) {
        this._names.add(name);
      }

      this._mappings.add({
        generatedLine: generated.line,
        generatedColumn: generated.column,
        originalLine: original != null && original.line,
        originalColumn: original != null && original.column,
        source: source,
        name: name
      });
    };

  /**
   * Set the source content for a source file.
   */
  SourceMapGenerator.prototype.setSourceContent =
    function SourceMapGenerator_setSourceContent(aSourceFile, aSourceContent) {
      var source = aSourceFile;
      if (this._sourceRoot != null) {
        source = util.relative(this._sourceRoot, source);
      }

      if (aSourceContent != null) {
        // Add the source content to the _sourcesContents map.
        // Create a new _sourcesContents map if the property is null.
        if (!this._sourcesContents) {
          this._sourcesContents = {};
        }
        this._sourcesContents[util.toSetString(source)] = aSourceContent;
      } else if (this._sourcesContents) {
        // Remove the source file from the _sourcesContents map.
        // If the _sourcesContents map is empty, set the property to null.
        delete this._sourcesContents[util.toSetString(source)];
        if (Object.keys(this._sourcesContents).length === 0) {
          this._sourcesContents = null;
        }
      }
    };

  /**
   * Applies the mappings of a sub-source-map for a specific source file to the
   * source map being generated. Each mapping to the supplied source file is
   * rewritten using the supplied source map. Note: The resolution for the
   * resulting mappings is the minimium of this map and the supplied map.
   *
   * @param aSourceMapConsumer The source map to be applied.
   * @param aSourceFile Optional. The filename of the source file.
   *        If omitted, SourceMapConsumer's file property will be used.
   * @param aSourceMapPath Optional. The dirname of the path to the source map
   *        to be applied. If relative, it is relative to the SourceMapConsumer.
   *        This parameter is needed when the two source maps aren't in the same
   *        directory, and the source map to be applied contains relative source
   *        paths. If so, those relative source paths need to be rewritten
   *        relative to the SourceMapGenerator.
   */
  SourceMapGenerator.prototype.applySourceMap =
    function SourceMapGenerator_applySourceMap(aSourceMapConsumer, aSourceFile, aSourceMapPath) {
      var sourceFile = aSourceFile;
      // If aSourceFile is omitted, we will use the file property of the SourceMap
      if (aSourceFile == null) {
        if (aSourceMapConsumer.file == null) {
          throw new Error(
            'SourceMapGenerator.prototype.applySourceMap requires either an explicit source file, ' +
            'or the source map\'s "file" property. Both were omitted.'
          );
        }
        sourceFile = aSourceMapConsumer.file;
      }
      var sourceRoot = this._sourceRoot;
      // Make "sourceFile" relative if an absolute Url is passed.
      if (sourceRoot != null) {
        sourceFile = util.relative(sourceRoot, sourceFile);
      }
      // Applying the SourceMap can add and remove items from the sources and
      // the names array.
      var newSources = new ArraySet();
      var newNames = new ArraySet();

      // Find mappings for the "sourceFile"
      this._mappings.unsortedForEach(function (mapping) {
        if (mapping.source === sourceFile && mapping.originalLine != null) {
          // Check if it can be mapped by the source map, then update the mapping.
          var original = aSourceMapConsumer.originalPositionFor({
            line: mapping.originalLine,
            column: mapping.originalColumn
          });
          if (original.source != null) {
            // Copy mapping
            mapping.source = original.source;
            if (aSourceMapPath != null) {
              mapping.source = util.join(aSourceMapPath, mapping.source)
            }
            if (sourceRoot != null) {
              mapping.source = util.relative(sourceRoot, mapping.source);
            }
            mapping.originalLine = original.line;
            mapping.originalColumn = original.column;
            if (original.name != null) {
              mapping.name = original.name;
            }
          }
        }

        var source = mapping.source;
        if (source != null && !newSources.has(source)) {
          newSources.add(source);
        }

        var name = mapping.name;
        if (name != null && !newNames.has(name)) {
          newNames.add(name);
        }

      }, this);
      this._sources = newSources;
      this._names = newNames;

      // Copy sourcesContents of applied map.
      aSourceMapConsumer.sources.forEach(function (sourceFile) {
        var content = aSourceMapConsumer.sourceContentFor(sourceFile);
        if (content != null) {
          if (aSourceMapPath != null) {
            sourceFile = util.join(aSourceMapPath, sourceFile);
          }
          if (sourceRoot != null) {
            sourceFile = util.relative(sourceRoot, sourceFile);
          }
          this.setSourceContent(sourceFile, content);
        }
      }, this);
    };

  /**
   * A mapping can have one of the three levels of data:
   *
   *   1. Just the generated position.
   *   2. The Generated position, original position, and original source.
   *   3. Generated and original position, original source, as well as a name
   *      token.
   *
   * To maintain consistency, we validate that any new mapping being added falls
   * in to one of these categories.
   */
  SourceMapGenerator.prototype._validateMapping =
    function SourceMapGenerator_validateMapping(aGenerated, aOriginal, aSource,
                                                aName) {
      if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
          && aGenerated.line > 0 && aGenerated.column >= 0
          && !aOriginal && !aSource && !aName) {
        // Case 1.
        return;
      }
      else if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
               && aOriginal && 'line' in aOriginal && 'column' in aOriginal
               && aGenerated.line > 0 && aGenerated.column >= 0
               && aOriginal.line > 0 && aOriginal.column >= 0
               && aSource) {
        // Cases 2 and 3.
        return;
      }
      else {
        throw new Error('Invalid mapping: ' + JSON.stringify({
          generated: aGenerated,
          source: aSource,
          original: aOriginal,
          name: aName
        }));
      }
    };

  /**
   * Serialize the accumulated mappings in to the stream of base 64 VLQs
   * specified by the source map format.
   */
  SourceMapGenerator.prototype._serializeMappings =
    function SourceMapGenerator_serializeMappings() {
      var previousGeneratedColumn = 0;
      var previousGeneratedLine = 1;
      var previousOriginalColumn = 0;
      var previousOriginalLine = 0;
      var previousName = 0;
      var previousSource = 0;
      var result = '';
      var mapping;

      var mappings = this._mappings.toArray();

      for (var i = 0, len = mappings.length; i < len; i++) {
        mapping = mappings[i];

        if (mapping.generatedLine !== previousGeneratedLine) {
          previousGeneratedColumn = 0;
          while (mapping.generatedLine !== previousGeneratedLine) {
            result += ';';
            previousGeneratedLine++;
          }
        }
        else {
          if (i > 0) {
            if (!util.compareByGeneratedPositions(mapping, mappings[i - 1])) {
              continue;
            }
            result += ',';
          }
        }

        result += base64VLQ.encode(mapping.generatedColumn
                                   - previousGeneratedColumn);
        previousGeneratedColumn = mapping.generatedColumn;

        if (mapping.source != null) {
          result += base64VLQ.encode(this._sources.indexOf(mapping.source)
                                     - previousSource);
          previousSource = this._sources.indexOf(mapping.source);

          // lines are stored 0-based in SourceMap spec version 3
          result += base64VLQ.encode(mapping.originalLine - 1
                                     - previousOriginalLine);
          previousOriginalLine = mapping.originalLine - 1;

          result += base64VLQ.encode(mapping.originalColumn
                                     - previousOriginalColumn);
          previousOriginalColumn = mapping.originalColumn;

          if (mapping.name != null) {
            result += base64VLQ.encode(this._names.indexOf(mapping.name)
                                       - previousName);
            previousName = this._names.indexOf(mapping.name);
          }
        }
      }

      return result;
    };

  SourceMapGenerator.prototype._generateSourcesContent =
    function SourceMapGenerator_generateSourcesContent(aSources, aSourceRoot) {
      return aSources.map(function (source) {
        if (!this._sourcesContents) {
          return null;
        }
        if (aSourceRoot != null) {
          source = util.relative(aSourceRoot, source);
        }
        var key = util.toSetString(source);
        return Object.prototype.hasOwnProperty.call(this._sourcesContents,
                                                    key)
          ? this._sourcesContents[key]
          : null;
      }, this);
    };

  /**
   * Externalize the source map.
   */
  SourceMapGenerator.prototype.toJSON =
    function SourceMapGenerator_toJSON() {
      var map = {
        version: this._version,
        sources: this._sources.toArray(),
        names: this._names.toArray(),
        mappings: this._serializeMappings()
      };
      if (this._file != null) {
        map.file = this._file;
      }
      if (this._sourceRoot != null) {
        map.sourceRoot = this._sourceRoot;
      }
      if (this._sourcesContents) {
        map.sourcesContent = this._generateSourcesContent(map.sources, map.sourceRoot);
      }

      return map;
    };

  /**
   * Render the source map being generated to a string.
   */
  SourceMapGenerator.prototype.toString =
    function SourceMapGenerator_toString() {
      return JSON.stringify(this);
    };

  exports.SourceMapGenerator = SourceMapGenerator;

});

},{"./array-set":70,"./base64-vlq":71,"./mapping-list":74,"./util":78,"amdefine":79}],77:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
if (typeof define !== 'function') {
    var define = require('amdefine')(module, require);
}
define(function (require, exports, module) {

  var SourceMapGenerator = require('./source-map-generator').SourceMapGenerator;
  var util = require('./util');

  // Matches a Windows-style `\r\n` newline or a `\n` newline used by all other
  // operating systems these days (capturing the result).
  var REGEX_NEWLINE = /(\r?\n)/;

  // Newline character code for charCodeAt() comparisons
  var NEWLINE_CODE = 10;

  // Private symbol for identifying `SourceNode`s when multiple versions of
  // the source-map library are loaded. This MUST NOT CHANGE across
  // versions!
  var isSourceNode = "$$$isSourceNode$$$";

  /**
   * SourceNodes provide a way to abstract over interpolating/concatenating
   * snippets of generated JavaScript source code while maintaining the line and
   * column information associated with the original source code.
   *
   * @param aLine The original line number.
   * @param aColumn The original column number.
   * @param aSource The original source's filename.
   * @param aChunks Optional. An array of strings which are snippets of
   *        generated JS, or other SourceNodes.
   * @param aName The original identifier.
   */
  function SourceNode(aLine, aColumn, aSource, aChunks, aName) {
    this.children = [];
    this.sourceContents = {};
    this.line = aLine == null ? null : aLine;
    this.column = aColumn == null ? null : aColumn;
    this.source = aSource == null ? null : aSource;
    this.name = aName == null ? null : aName;
    this[isSourceNode] = true;
    if (aChunks != null) this.add(aChunks);
  }

  /**
   * Creates a SourceNode from generated code and a SourceMapConsumer.
   *
   * @param aGeneratedCode The generated code
   * @param aSourceMapConsumer The SourceMap for the generated code
   * @param aRelativePath Optional. The path that relative sources in the
   *        SourceMapConsumer should be relative to.
   */
  SourceNode.fromStringWithSourceMap =
    function SourceNode_fromStringWithSourceMap(aGeneratedCode, aSourceMapConsumer, aRelativePath) {
      // The SourceNode we want to fill with the generated code
      // and the SourceMap
      var node = new SourceNode();

      // All even indices of this array are one line of the generated code,
      // while all odd indices are the newlines between two adjacent lines
      // (since `REGEX_NEWLINE` captures its match).
      // Processed fragments are removed from this array, by calling `shiftNextLine`.
      var remainingLines = aGeneratedCode.split(REGEX_NEWLINE);
      var shiftNextLine = function() {
        var lineContents = remainingLines.shift();
        // The last line of a file might not have a newline.
        var newLine = remainingLines.shift() || "";
        return lineContents + newLine;
      };

      // We need to remember the position of "remainingLines"
      var lastGeneratedLine = 1, lastGeneratedColumn = 0;

      // The generate SourceNodes we need a code range.
      // To extract it current and last mapping is used.
      // Here we store the last mapping.
      var lastMapping = null;

      aSourceMapConsumer.eachMapping(function (mapping) {
        if (lastMapping !== null) {
          // We add the code from "lastMapping" to "mapping":
          // First check if there is a new line in between.
          if (lastGeneratedLine < mapping.generatedLine) {
            var code = "";
            // Associate first line with "lastMapping"
            addMappingWithCode(lastMapping, shiftNextLine());
            lastGeneratedLine++;
            lastGeneratedColumn = 0;
            // The remaining code is added without mapping
          } else {
            // There is no new line in between.
            // Associate the code between "lastGeneratedColumn" and
            // "mapping.generatedColumn" with "lastMapping"
            var nextLine = remainingLines[0];
            var code = nextLine.substr(0, mapping.generatedColumn -
                                          lastGeneratedColumn);
            remainingLines[0] = nextLine.substr(mapping.generatedColumn -
                                                lastGeneratedColumn);
            lastGeneratedColumn = mapping.generatedColumn;
            addMappingWithCode(lastMapping, code);
            // No more remaining code, continue
            lastMapping = mapping;
            return;
          }
        }
        // We add the generated code until the first mapping
        // to the SourceNode without any mapping.
        // Each line is added as separate string.
        while (lastGeneratedLine < mapping.generatedLine) {
          node.add(shiftNextLine());
          lastGeneratedLine++;
        }
        if (lastGeneratedColumn < mapping.generatedColumn) {
          var nextLine = remainingLines[0];
          node.add(nextLine.substr(0, mapping.generatedColumn));
          remainingLines[0] = nextLine.substr(mapping.generatedColumn);
          lastGeneratedColumn = mapping.generatedColumn;
        }
        lastMapping = mapping;
      }, this);
      // We have processed all mappings.
      if (remainingLines.length > 0) {
        if (lastMapping) {
          // Associate the remaining code in the current line with "lastMapping"
          addMappingWithCode(lastMapping, shiftNextLine());
        }
        // and add the remaining lines without any mapping
        node.add(remainingLines.join(""));
      }

      // Copy sourcesContent into SourceNode
      aSourceMapConsumer.sources.forEach(function (sourceFile) {
        var content = aSourceMapConsumer.sourceContentFor(sourceFile);
        if (content != null) {
          if (aRelativePath != null) {
            sourceFile = util.join(aRelativePath, sourceFile);
          }
          node.setSourceContent(sourceFile, content);
        }
      });

      return node;

      function addMappingWithCode(mapping, code) {
        if (mapping === null || mapping.source === undefined) {
          node.add(code);
        } else {
          var source = aRelativePath
            ? util.join(aRelativePath, mapping.source)
            : mapping.source;
          node.add(new SourceNode(mapping.originalLine,
                                  mapping.originalColumn,
                                  source,
                                  code,
                                  mapping.name));
        }
      }
    };

  /**
   * Add a chunk of generated JS to this source node.
   *
   * @param aChunk A string snippet of generated JS code, another instance of
   *        SourceNode, or an array where each member is one of those things.
   */
  SourceNode.prototype.add = function SourceNode_add(aChunk) {
    if (Array.isArray(aChunk)) {
      aChunk.forEach(function (chunk) {
        this.add(chunk);
      }, this);
    }
    else if (aChunk[isSourceNode] || typeof aChunk === "string") {
      if (aChunk) {
        this.children.push(aChunk);
      }
    }
    else {
      throw new TypeError(
        "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
      );
    }
    return this;
  };

  /**
   * Add a chunk of generated JS to the beginning of this source node.
   *
   * @param aChunk A string snippet of generated JS code, another instance of
   *        SourceNode, or an array where each member is one of those things.
   */
  SourceNode.prototype.prepend = function SourceNode_prepend(aChunk) {
    if (Array.isArray(aChunk)) {
      for (var i = aChunk.length-1; i >= 0; i--) {
        this.prepend(aChunk[i]);
      }
    }
    else if (aChunk[isSourceNode] || typeof aChunk === "string") {
      this.children.unshift(aChunk);
    }
    else {
      throw new TypeError(
        "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
      );
    }
    return this;
  };

  /**
   * Walk over the tree of JS snippets in this node and its children. The
   * walking function is called once for each snippet of JS and is passed that
   * snippet and the its original associated source's line/column location.
   *
   * @param aFn The traversal function.
   */
  SourceNode.prototype.walk = function SourceNode_walk(aFn) {
    var chunk;
    for (var i = 0, len = this.children.length; i < len; i++) {
      chunk = this.children[i];
      if (chunk[isSourceNode]) {
        chunk.walk(aFn);
      }
      else {
        if (chunk !== '') {
          aFn(chunk, { source: this.source,
                       line: this.line,
                       column: this.column,
                       name: this.name });
        }
      }
    }
  };

  /**
   * Like `String.prototype.join` except for SourceNodes. Inserts `aStr` between
   * each of `this.children`.
   *
   * @param aSep The separator.
   */
  SourceNode.prototype.join = function SourceNode_join(aSep) {
    var newChildren;
    var i;
    var len = this.children.length;
    if (len > 0) {
      newChildren = [];
      for (i = 0; i < len-1; i++) {
        newChildren.push(this.children[i]);
        newChildren.push(aSep);
      }
      newChildren.push(this.children[i]);
      this.children = newChildren;
    }
    return this;
  };

  /**
   * Call String.prototype.replace on the very right-most source snippet. Useful
   * for trimming whitespace from the end of a source node, etc.
   *
   * @param aPattern The pattern to replace.
   * @param aReplacement The thing to replace the pattern with.
   */
  SourceNode.prototype.replaceRight = function SourceNode_replaceRight(aPattern, aReplacement) {
    var lastChild = this.children[this.children.length - 1];
    if (lastChild[isSourceNode]) {
      lastChild.replaceRight(aPattern, aReplacement);
    }
    else if (typeof lastChild === 'string') {
      this.children[this.children.length - 1] = lastChild.replace(aPattern, aReplacement);
    }
    else {
      this.children.push(''.replace(aPattern, aReplacement));
    }
    return this;
  };

  /**
   * Set the source content for a source file. This will be added to the SourceMapGenerator
   * in the sourcesContent field.
   *
   * @param aSourceFile The filename of the source file
   * @param aSourceContent The content of the source file
   */
  SourceNode.prototype.setSourceContent =
    function SourceNode_setSourceContent(aSourceFile, aSourceContent) {
      this.sourceContents[util.toSetString(aSourceFile)] = aSourceContent;
    };

  /**
   * Walk over the tree of SourceNodes. The walking function is called for each
   * source file content and is passed the filename and source content.
   *
   * @param aFn The traversal function.
   */
  SourceNode.prototype.walkSourceContents =
    function SourceNode_walkSourceContents(aFn) {
      for (var i = 0, len = this.children.length; i < len; i++) {
        if (this.children[i][isSourceNode]) {
          this.children[i].walkSourceContents(aFn);
        }
      }

      var sources = Object.keys(this.sourceContents);
      for (var i = 0, len = sources.length; i < len; i++) {
        aFn(util.fromSetString(sources[i]), this.sourceContents[sources[i]]);
      }
    };

  /**
   * Return the string representation of this source node. Walks over the tree
   * and concatenates all the various snippets together to one string.
   */
  SourceNode.prototype.toString = function SourceNode_toString() {
    var str = "";
    this.walk(function (chunk) {
      str += chunk;
    });
    return str;
  };

  /**
   * Returns the string representation of this source node along with a source
   * map.
   */
  SourceNode.prototype.toStringWithSourceMap = function SourceNode_toStringWithSourceMap(aArgs) {
    var generated = {
      code: "",
      line: 1,
      column: 0
    };
    var map = new SourceMapGenerator(aArgs);
    var sourceMappingActive = false;
    var lastOriginalSource = null;
    var lastOriginalLine = null;
    var lastOriginalColumn = null;
    var lastOriginalName = null;
    this.walk(function (chunk, original) {
      generated.code += chunk;
      if (original.source !== null
          && original.line !== null
          && original.column !== null) {
        if(lastOriginalSource !== original.source
           || lastOriginalLine !== original.line
           || lastOriginalColumn !== original.column
           || lastOriginalName !== original.name) {
          map.addMapping({
            source: original.source,
            original: {
              line: original.line,
              column: original.column
            },
            generated: {
              line: generated.line,
              column: generated.column
            },
            name: original.name
          });
        }
        lastOriginalSource = original.source;
        lastOriginalLine = original.line;
        lastOriginalColumn = original.column;
        lastOriginalName = original.name;
        sourceMappingActive = true;
      } else if (sourceMappingActive) {
        map.addMapping({
          generated: {
            line: generated.line,
            column: generated.column
          }
        });
        lastOriginalSource = null;
        sourceMappingActive = false;
      }
      for (var idx = 0, length = chunk.length; idx < length; idx++) {
        if (chunk.charCodeAt(idx) === NEWLINE_CODE) {
          generated.line++;
          generated.column = 0;
          // Mappings end at eol
          if (idx + 1 === length) {
            lastOriginalSource = null;
            sourceMappingActive = false;
          } else if (sourceMappingActive) {
            map.addMapping({
              source: original.source,
              original: {
                line: original.line,
                column: original.column
              },
              generated: {
                line: generated.line,
                column: generated.column
              },
              name: original.name
            });
          }
        } else {
          generated.column++;
        }
      }
    });
    this.walkSourceContents(function (sourceFile, sourceContent) {
      map.setSourceContent(sourceFile, sourceContent);
    });

    return { code: generated.code, map: map };
  };

  exports.SourceNode = SourceNode;

});

},{"./source-map-generator":76,"./util":78,"amdefine":79}],78:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
if (typeof define !== 'function') {
    var define = require('amdefine')(module, require);
}
define(function (require, exports, module) {

  /**
   * This is a helper function for getting values from parameter/options
   * objects.
   *
   * @param args The object we are extracting values from
   * @param name The name of the property we are getting.
   * @param defaultValue An optional value to return if the property is missing
   * from the object. If this is not specified and the property is missing, an
   * error will be thrown.
   */
  function getArg(aArgs, aName, aDefaultValue) {
    if (aName in aArgs) {
      return aArgs[aName];
    } else if (arguments.length === 3) {
      return aDefaultValue;
    } else {
      throw new Error('"' + aName + '" is a required argument.');
    }
  }
  exports.getArg = getArg;

  var urlRegexp = /^(?:([\w+\-.]+):)?\/\/(?:(\w+:\w+)@)?([\w.]*)(?::(\d+))?(\S*)$/;
  var dataUrlRegexp = /^data:.+\,.+$/;

  function urlParse(aUrl) {
    var match = aUrl.match(urlRegexp);
    if (!match) {
      return null;
    }
    return {
      scheme: match[1],
      auth: match[2],
      host: match[3],
      port: match[4],
      path: match[5]
    };
  }
  exports.urlParse = urlParse;

  function urlGenerate(aParsedUrl) {
    var url = '';
    if (aParsedUrl.scheme) {
      url += aParsedUrl.scheme + ':';
    }
    url += '//';
    if (aParsedUrl.auth) {
      url += aParsedUrl.auth + '@';
    }
    if (aParsedUrl.host) {
      url += aParsedUrl.host;
    }
    if (aParsedUrl.port) {
      url += ":" + aParsedUrl.port
    }
    if (aParsedUrl.path) {
      url += aParsedUrl.path;
    }
    return url;
  }
  exports.urlGenerate = urlGenerate;

  /**
   * Normalizes a path, or the path portion of a URL:
   *
   * - Replaces consequtive slashes with one slash.
   * - Removes unnecessary '.' parts.
   * - Removes unnecessary '<dir>/..' parts.
   *
   * Based on code in the Node.js 'path' core module.
   *
   * @param aPath The path or url to normalize.
   */
  function normalize(aPath) {
    var path = aPath;
    var url = urlParse(aPath);
    if (url) {
      if (!url.path) {
        return aPath;
      }
      path = url.path;
    }
    var isAbsolute = (path.charAt(0) === '/');

    var parts = path.split(/\/+/);
    for (var part, up = 0, i = parts.length - 1; i >= 0; i--) {
      part = parts[i];
      if (part === '.') {
        parts.splice(i, 1);
      } else if (part === '..') {
        up++;
      } else if (up > 0) {
        if (part === '') {
          // The first part is blank if the path is absolute. Trying to go
          // above the root is a no-op. Therefore we can remove all '..' parts
          // directly after the root.
          parts.splice(i + 1, up);
          up = 0;
        } else {
          parts.splice(i, 2);
          up--;
        }
      }
    }
    path = parts.join('/');

    if (path === '') {
      path = isAbsolute ? '/' : '.';
    }

    if (url) {
      url.path = path;
      return urlGenerate(url);
    }
    return path;
  }
  exports.normalize = normalize;

  /**
   * Joins two paths/URLs.
   *
   * @param aRoot The root path or URL.
   * @param aPath The path or URL to be joined with the root.
   *
   * - If aPath is a URL or a data URI, aPath is returned, unless aPath is a
   *   scheme-relative URL: Then the scheme of aRoot, if any, is prepended
   *   first.
   * - Otherwise aPath is a path. If aRoot is a URL, then its path portion
   *   is updated with the result and aRoot is returned. Otherwise the result
   *   is returned.
   *   - If aPath is absolute, the result is aPath.
   *   - Otherwise the two paths are joined with a slash.
   * - Joining for example 'http://' and 'www.example.com' is also supported.
   */
  function join(aRoot, aPath) {
    if (aRoot === "") {
      aRoot = ".";
    }
    if (aPath === "") {
      aPath = ".";
    }
    var aPathUrl = urlParse(aPath);
    var aRootUrl = urlParse(aRoot);
    if (aRootUrl) {
      aRoot = aRootUrl.path || '/';
    }

    // `join(foo, '//www.example.org')`
    if (aPathUrl && !aPathUrl.scheme) {
      if (aRootUrl) {
        aPathUrl.scheme = aRootUrl.scheme;
      }
      return urlGenerate(aPathUrl);
    }

    if (aPathUrl || aPath.match(dataUrlRegexp)) {
      return aPath;
    }

    // `join('http://', 'www.example.com')`
    if (aRootUrl && !aRootUrl.host && !aRootUrl.path) {
      aRootUrl.host = aPath;
      return urlGenerate(aRootUrl);
    }

    var joined = aPath.charAt(0) === '/'
      ? aPath
      : normalize(aRoot.replace(/\/+$/, '') + '/' + aPath);

    if (aRootUrl) {
      aRootUrl.path = joined;
      return urlGenerate(aRootUrl);
    }
    return joined;
  }
  exports.join = join;

  /**
   * Make a path relative to a URL or another path.
   *
   * @param aRoot The root path or URL.
   * @param aPath The path or URL to be made relative to aRoot.
   */
  function relative(aRoot, aPath) {
    if (aRoot === "") {
      aRoot = ".";
    }

    aRoot = aRoot.replace(/\/$/, '');

    // XXX: It is possible to remove this block, and the tests still pass!
    var url = urlParse(aRoot);
    if (aPath.charAt(0) == "/" && url && url.path == "/") {
      return aPath.slice(1);
    }

    return aPath.indexOf(aRoot + '/') === 0
      ? aPath.substr(aRoot.length + 1)
      : aPath;
  }
  exports.relative = relative;

  /**
   * Because behavior goes wacky when you set `__proto__` on objects, we
   * have to prefix all the strings in our set with an arbitrary character.
   *
   * See https://github.com/mozilla/source-map/pull/31 and
   * https://github.com/mozilla/source-map/issues/30
   *
   * @param String aStr
   */
  function toSetString(aStr) {
    return '$' + aStr;
  }
  exports.toSetString = toSetString;

  function fromSetString(aStr) {
    return aStr.substr(1);
  }
  exports.fromSetString = fromSetString;

  function strcmp(aStr1, aStr2) {
    var s1 = aStr1 || "";
    var s2 = aStr2 || "";
    return (s1 > s2) - (s1 < s2);
  }

  /**
   * Comparator between two mappings where the original positions are compared.
   *
   * Optionally pass in `true` as `onlyCompareGenerated` to consider two
   * mappings with the same original source/line/column, but different generated
   * line and column the same. Useful when searching for a mapping with a
   * stubbed out mapping.
   */
  function compareByOriginalPositions(mappingA, mappingB, onlyCompareOriginal) {
    var cmp;

    cmp = strcmp(mappingA.source, mappingB.source);
    if (cmp) {
      return cmp;
    }

    cmp = mappingA.originalLine - mappingB.originalLine;
    if (cmp) {
      return cmp;
    }

    cmp = mappingA.originalColumn - mappingB.originalColumn;
    if (cmp || onlyCompareOriginal) {
      return cmp;
    }

    cmp = strcmp(mappingA.name, mappingB.name);
    if (cmp) {
      return cmp;
    }

    cmp = mappingA.generatedLine - mappingB.generatedLine;
    if (cmp) {
      return cmp;
    }

    return mappingA.generatedColumn - mappingB.generatedColumn;
  };
  exports.compareByOriginalPositions = compareByOriginalPositions;

  /**
   * Comparator between two mappings where the generated positions are
   * compared.
   *
   * Optionally pass in `true` as `onlyCompareGenerated` to consider two
   * mappings with the same generated line and column, but different
   * source/name/original line and column the same. Useful when searching for a
   * mapping with a stubbed out mapping.
   */
  function compareByGeneratedPositions(mappingA, mappingB, onlyCompareGenerated) {
    var cmp;

    cmp = mappingA.generatedLine - mappingB.generatedLine;
    if (cmp) {
      return cmp;
    }

    cmp = mappingA.generatedColumn - mappingB.generatedColumn;
    if (cmp || onlyCompareGenerated) {
      return cmp;
    }

    cmp = strcmp(mappingA.source, mappingB.source);
    if (cmp) {
      return cmp;
    }

    cmp = mappingA.originalLine - mappingB.originalLine;
    if (cmp) {
      return cmp;
    }

    cmp = mappingA.originalColumn - mappingB.originalColumn;
    if (cmp) {
      return cmp;
    }

    return strcmp(mappingA.name, mappingB.name);
  };
  exports.compareByGeneratedPositions = compareByGeneratedPositions;

});

},{"amdefine":79}],79:[function(require,module,exports){
(function (process,__filename){
/** vim: et:ts=4:sw=4:sts=4
 * @license amdefine 0.1.0 Copyright (c) 2011, The Dojo Foundation All Rights Reserved.
 * Available via the MIT or new BSD license.
 * see: http://github.com/jrburke/amdefine for details
 */

/*jslint node: true */
/*global module, process */
'use strict';

/**
 * Creates a define for node.
 * @param {Object} module the "module" object that is defined by Node for the
 * current module.
 * @param {Function} [requireFn]. Node's require function for the current module.
 * It only needs to be passed in Node versions before 0.5, when module.require
 * did not exist.
 * @returns {Function} a define function that is usable for the current node
 * module.
 */
function amdefine(module, requireFn) {
    'use strict';
    var defineCache = {},
        loaderCache = {},
        alreadyCalled = false,
        path = require('path'),
        makeRequire, stringRequire;

    /**
     * Trims the . and .. from an array of path segments.
     * It will keep a leading path segment if a .. will become
     * the first path segment, to help with module name lookups,
     * which act like paths, but can be remapped. But the end result,
     * all paths that use this function should look normalized.
     * NOTE: this method MODIFIES the input array.
     * @param {Array} ary the array of path segments.
     */
    function trimDots(ary) {
        var i, part;
        for (i = 0; ary[i]; i+= 1) {
            part = ary[i];
            if (part === '.') {
                ary.splice(i, 1);
                i -= 1;
            } else if (part === '..') {
                if (i === 1 && (ary[2] === '..' || ary[0] === '..')) {
                    //End of the line. Keep at least one non-dot
                    //path segment at the front so it can be mapped
                    //correctly to disk. Otherwise, there is likely
                    //no path mapping for a path starting with '..'.
                    //This can still fail, but catches the most reasonable
                    //uses of ..
                    break;
                } else if (i > 0) {
                    ary.splice(i - 1, 2);
                    i -= 2;
                }
            }
        }
    }

    function normalize(name, baseName) {
        var baseParts;

        //Adjust any relative paths.
        if (name && name.charAt(0) === '.') {
            //If have a base name, try to normalize against it,
            //otherwise, assume it is a top-level require that will
            //be relative to baseUrl in the end.
            if (baseName) {
                baseParts = baseName.split('/');
                baseParts = baseParts.slice(0, baseParts.length - 1);
                baseParts = baseParts.concat(name.split('/'));
                trimDots(baseParts);
                name = baseParts.join('/');
            }
        }

        return name;
    }

    /**
     * Create the normalize() function passed to a loader plugin's
     * normalize method.
     */
    function makeNormalize(relName) {
        return function (name) {
            return normalize(name, relName);
        };
    }

    function makeLoad(id) {
        function load(value) {
            loaderCache[id] = value;
        }

        load.fromText = function (id, text) {
            //This one is difficult because the text can/probably uses
            //define, and any relative paths and requires should be relative
            //to that id was it would be found on disk. But this would require
            //bootstrapping a module/require fairly deeply from node core.
            //Not sure how best to go about that yet.
            throw new Error('amdefine does not implement load.fromText');
        };

        return load;
    }

    makeRequire = function (systemRequire, exports, module, relId) {
        function amdRequire(deps, callback) {
            if (typeof deps === 'string') {
                //Synchronous, single module require('')
                return stringRequire(systemRequire, exports, module, deps, relId);
            } else {
                //Array of dependencies with a callback.

                //Convert the dependencies to modules.
                deps = deps.map(function (depName) {
                    return stringRequire(systemRequire, exports, module, depName, relId);
                });

                //Wait for next tick to call back the require call.
                process.nextTick(function () {
                    callback.apply(null, deps);
                });
            }
        }

        amdRequire.toUrl = function (filePath) {
            if (filePath.indexOf('.') === 0) {
                return normalize(filePath, path.dirname(module.filename));
            } else {
                return filePath;
            }
        };

        return amdRequire;
    };

    //Favor explicit value, passed in if the module wants to support Node 0.4.
    requireFn = requireFn || function req() {
        return module.require.apply(module, arguments);
    };

    function runFactory(id, deps, factory) {
        var r, e, m, result;

        if (id) {
            e = loaderCache[id] = {};
            m = {
                id: id,
                uri: __filename,
                exports: e
            };
            r = makeRequire(requireFn, e, m, id);
        } else {
            //Only support one define call per file
            if (alreadyCalled) {
                throw new Error('amdefine with no module ID cannot be called more than once per file.');
            }
            alreadyCalled = true;

            //Use the real variables from node
            //Use module.exports for exports, since
            //the exports in here is amdefine exports.
            e = module.exports;
            m = module;
            r = makeRequire(requireFn, e, m, module.id);
        }

        //If there are dependencies, they are strings, so need
        //to convert them to dependency values.
        if (deps) {
            deps = deps.map(function (depName) {
                return r(depName);
            });
        }

        //Call the factory with the right dependencies.
        if (typeof factory === 'function') {
            result = factory.apply(m.exports, deps);
        } else {
            result = factory;
        }

        if (result !== undefined) {
            m.exports = result;
            if (id) {
                loaderCache[id] = m.exports;
            }
        }
    }

    stringRequire = function (systemRequire, exports, module, id, relId) {
        //Split the ID by a ! so that
        var index = id.indexOf('!'),
            originalId = id,
            prefix, plugin;

        if (index === -1) {
            id = normalize(id, relId);

            //Straight module lookup. If it is one of the special dependencies,
            //deal with it, otherwise, delegate to node.
            if (id === 'require') {
                return makeRequire(systemRequire, exports, module, relId);
            } else if (id === 'exports') {
                return exports;
            } else if (id === 'module') {
                return module;
            } else if (loaderCache.hasOwnProperty(id)) {
                return loaderCache[id];
            } else if (defineCache[id]) {
                runFactory.apply(null, defineCache[id]);
                return loaderCache[id];
            } else {
                if(systemRequire) {
                    return systemRequire(originalId);
                } else {
                    throw new Error('No module with ID: ' + id);
                }
            }
        } else {
            //There is a plugin in play.
            prefix = id.substring(0, index);
            id = id.substring(index + 1, id.length);

            plugin = stringRequire(systemRequire, exports, module, prefix, relId);

            if (plugin.normalize) {
                id = plugin.normalize(id, makeNormalize(relId));
            } else {
                //Normalize the ID normally.
                id = normalize(id, relId);
            }

            if (loaderCache[id]) {
                return loaderCache[id];
            } else {
                plugin.load(id, makeRequire(systemRequire, exports, module, relId), makeLoad(id), {});

                return loaderCache[id];
            }
        }
    };

    //Create a define function specific to the module asking for amdefine.
    function define(id, deps, factory) {
        if (Array.isArray(id)) {
            factory = deps;
            deps = id;
            id = undefined;
        } else if (typeof id !== 'string') {
            factory = id;
            id = deps = undefined;
        }

        if (deps && !Array.isArray(deps)) {
            factory = deps;
            deps = undefined;
        }

        if (!deps) {
            deps = ['require', 'exports', 'module'];
        }

        //Set up properties for this module. If an ID, then use
        //internal cache. If no ID, then use the external variables
        //for this node module.
        if (id) {
            //Put the module in deep freeze until there is a
            //require call for it.
            defineCache[id] = [id, deps, factory];
        } else {
            runFactory(id, deps, factory);
        }
    }

    //define.require, which has access to all the values in the
    //cache. Useful for AMD modules that all have IDs in the file,
    //but need to finally export a value to node based on one of those
    //IDs.
    define.require = function (id) {
        if (loaderCache[id]) {
            return loaderCache[id];
        }

        if (defineCache[id]) {
            runFactory.apply(null, defineCache[id]);
            return loaderCache[id];
        }
    };

    define.amd = {};

    return define;
}

module.exports = amdefine;

}).call(this,require('_process'),"/node_modules/escodegen/node_modules/source-map/node_modules/amdefine/amdefine.js")
},{"_process":91,"path":90}],80:[function(require,module,exports){
module.exports={
  "name": "escodegen",
  "description": "ECMAScript code generator",
  "homepage": "http://github.com/estools/escodegen",
  "main": "escodegen.js",
  "bin": {
    "esgenerate": "./bin/esgenerate.js",
    "escodegen": "./bin/escodegen.js"
  },
  "files": [
    "LICENSE.BSD",
    "LICENSE.source-map",
    "README.md",
    "bin",
    "escodegen.js",
    "package.json"
  ],
  "version": "1.6.1",
  "engines": {
    "node": ">=0.10.0"
  },
  "maintainers": [
    {
      "name": "constellation",
      "email": "utatane.tea@gmail.com"
    }
  ],
  "repository": {
    "type": "git",
    "url": "http://github.com/estools/escodegen.git"
  },
  "dependencies": {
    "estraverse": "^1.9.1",
    "esutils": "^1.1.6",
    "esprima": "^1.2.2",
    "optionator": "^0.5.0",
    "source-map": "~0.1.40"
  },
  "optionalDependencies": {
    "source-map": "~0.1.40"
  },
  "devDependencies": {
    "acorn-6to5": "^0.11.1-25",
    "bluebird": "^2.3.11",
    "bower-registry-client": "^0.2.1",
    "chai": "^1.10.0",
    "commonjs-everywhere": "^0.9.7",
    "esprima-moz": "*",
    "gulp": "^3.8.10",
    "gulp-eslint": "^0.2.0",
    "gulp-mocha": "^2.0.0",
    "semver": "^4.1.0"
  },
  "licenses": [
    {
      "type": "BSD",
      "url": "http://github.com/estools/escodegen/raw/master/LICENSE.BSD"
    }
  ],
  "scripts": {
    "test": "gulp travis",
    "unit-test": "gulp test",
    "lint": "gulp lint",
    "release": "node tools/release.js",
    "build-min": "cjsify -ma path: tools/entry-point.js > escodegen.browser.min.js",
    "build": "cjsify -a path: tools/entry-point.js > escodegen.browser.js"
  },
  "gitHead": "1ca664f68dcf220b76c9dc562b2337c5e0b4227d",
  "bugs": {
    "url": "https://github.com/estools/escodegen/issues"
  },
  "_id": "escodegen@1.6.1",
  "_shasum": "367de17d8510540d12bc6dcb8b3f918391265815",
  "_from": "escodegen@1.6.1",
  "_npmVersion": "2.0.0-alpha-5",
  "_npmUser": {
    "name": "constellation",
    "email": "utatane.tea@gmail.com"
  },
  "dist": {
    "shasum": "367de17d8510540d12bc6dcb8b3f918391265815",
    "tarball": "http://registry.npmjs.org/escodegen/-/escodegen-1.6.1.tgz"
  },
  "directories": {},
  "_resolved": "https://registry.npmjs.org/escodegen/-/escodegen-1.6.1.tgz",
  "readme": "ERROR: No README data found!"
}

},{}],81:[function(require,module,exports){
/*
  Copyright (C) 2013 Ariya Hidayat <ariya.hidayat@gmail.com>
  Copyright (C) 2013 Thaddee Tyl <thaddee.tyl@gmail.com>
  Copyright (C) 2012 Ariya Hidayat <ariya.hidayat@gmail.com>
  Copyright (C) 2012 Mathias Bynens <mathias@qiwi.be>
  Copyright (C) 2012 Joost-Wim Boekesteijn <joost-wim@boekesteijn.nl>
  Copyright (C) 2012 Kris Kowal <kris.kowal@cixar.com>
  Copyright (C) 2012 Yusuke Suzuki <utatane.tea@gmail.com>
  Copyright (C) 2012 Arpad Borsos <arpad.borsos@googlemail.com>
  Copyright (C) 2011 Ariya Hidayat <ariya.hidayat@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true plusplus:true */
/*global esprima:true, define:true, exports:true, window: true,
throwError: true, generateStatement: true, peek: true,
parseAssignmentExpression: true, parseBlock: true,
parseClassExpression: true, parseClassDeclaration: true, parseExpression: true,
parseForStatement: true,
parseFunctionDeclaration: true, parseFunctionExpression: true,
parseFunctionSourceElements: true, parseVariableIdentifier: true,
parseImportSpecifier: true,
parseLeftHandSideExpression: true, parseParams: true, validateParam: true,
parseSpreadOrAssignmentExpression: true,
parseStatement: true, parseSourceElement: true, parseConciseBody: true,
advanceXJSChild: true, isXJSIdentifierStart: true, isXJSIdentifierPart: true,
scanXJSStringLiteral: true, scanXJSIdentifier: true,
parseXJSAttributeValue: true, parseXJSChild: true, parseXJSElement: true, parseXJSExpressionContainer: true, parseXJSEmptyExpression: true,
parseTypeAnnotation: true, parseTypeAnnotatableIdentifier: true,
parseYieldExpression: true, parseAwaitExpression: true
*/

(function (root, factory) {
    'use strict';

    // Universal Module Definition (UMD) to support AMD, CommonJS/Node.js,
    // Rhino, and plain browser loading.
    if (typeof define === 'function' && define.amd) {
        define(['exports'], factory);
    } else if (typeof exports !== 'undefined') {
        factory(exports);
    } else {
        factory((root.esprima = {}));
    }
}(this, function (exports) {
    'use strict';

    var Token,
        TokenName,
        FnExprTokens,
        Syntax,
        PropertyKind,
        Messages,
        Regex,
        SyntaxTreeDelegate,
        XHTMLEntities,
        ClassPropertyType,
        source,
        strict,
        index,
        lineNumber,
        lineStart,
        length,
        delegate,
        lookahead,
        state,
        extra;

    Token = {
        BooleanLiteral: 1,
        EOF: 2,
        Identifier: 3,
        Keyword: 4,
        NullLiteral: 5,
        NumericLiteral: 6,
        Punctuator: 7,
        StringLiteral: 8,
        RegularExpression: 9,
        Template: 10,
        XJSIdentifier: 11,
        XJSText: 12
    };

    TokenName = {};
    TokenName[Token.BooleanLiteral] = 'Boolean';
    TokenName[Token.EOF] = '<end>';
    TokenName[Token.Identifier] = 'Identifier';
    TokenName[Token.Keyword] = 'Keyword';
    TokenName[Token.NullLiteral] = 'Null';
    TokenName[Token.NumericLiteral] = 'Numeric';
    TokenName[Token.Punctuator] = 'Punctuator';
    TokenName[Token.StringLiteral] = 'String';
    TokenName[Token.XJSIdentifier] = 'XJSIdentifier';
    TokenName[Token.XJSText] = 'XJSText';
    TokenName[Token.RegularExpression] = 'RegularExpression';

    // A function following one of those tokens is an expression.
    FnExprTokens = ['(', '{', '[', 'in', 'typeof', 'instanceof', 'new',
                    'return', 'case', 'delete', 'throw', 'void',
                    // assignment operators
                    '=', '+=', '-=', '*=', '/=', '%=', '<<=', '>>=', '>>>=',
                    '&=', '|=', '^=', ',',
                    // binary/unary operators
                    '+', '-', '*', '/', '%', '++', '--', '<<', '>>', '>>>', '&',
                    '|', '^', '!', '~', '&&', '||', '?', ':', '===', '==', '>=',
                    '<=', '<', '>', '!=', '!=='];

    Syntax = {
        ArrayExpression: 'ArrayExpression',
        ArrayPattern: 'ArrayPattern',
        ArrowFunctionExpression: 'ArrowFunctionExpression',
        AssignmentExpression: 'AssignmentExpression',
        BinaryExpression: 'BinaryExpression',
        BlockStatement: 'BlockStatement',
        BreakStatement: 'BreakStatement',
        CallExpression: 'CallExpression',
        CatchClause: 'CatchClause',
        ClassBody: 'ClassBody',
        ClassDeclaration: 'ClassDeclaration',
        ClassExpression: 'ClassExpression',
        ClassProperty: 'ClassProperty',
        ComprehensionBlock: 'ComprehensionBlock',
        ComprehensionExpression: 'ComprehensionExpression',
        ConditionalExpression: 'ConditionalExpression',
        ContinueStatement: 'ContinueStatement',
        DebuggerStatement: 'DebuggerStatement',
        DoWhileStatement: 'DoWhileStatement',
        EmptyStatement: 'EmptyStatement',
        ExportDeclaration: 'ExportDeclaration',
        ExportBatchSpecifier: 'ExportBatchSpecifier',
        ExportSpecifier: 'ExportSpecifier',
        ExpressionStatement: 'ExpressionStatement',
        ForInStatement: 'ForInStatement',
        ForOfStatement: 'ForOfStatement',
        ForStatement: 'ForStatement',
        FunctionDeclaration: 'FunctionDeclaration',
        FunctionExpression: 'FunctionExpression',
        Identifier: 'Identifier',
        IfStatement: 'IfStatement',
        ImportDeclaration: 'ImportDeclaration',
        ImportDefaultSpecifier: 'ImportDefaultSpecifier',
        ImportNamespaceSpecifier: 'ImportNamespaceSpecifier',
        ImportSpecifier: 'ImportSpecifier',
        LabeledStatement: 'LabeledStatement',
        Literal: 'Literal',
        LogicalExpression: 'LogicalExpression',
        MemberExpression: 'MemberExpression',
        MethodDefinition: 'MethodDefinition',
        ModuleSpecifier: 'ModuleSpecifier',
        NewExpression: 'NewExpression',
        ObjectExpression: 'ObjectExpression',
        ObjectPattern: 'ObjectPattern',
        ObjectTypeAnnotation: 'ObjectTypeAnnotation',
        OptionalParameter: 'OptionalParameter',
        ParametricTypeAnnotation: 'ParametricTypeAnnotation',
        ParametricallyTypedIdentifier: 'ParametricallyTypedIdentifier',
        Program: 'Program',
        Property: 'Property',
        ReturnStatement: 'ReturnStatement',
        SequenceExpression: 'SequenceExpression',
        SpreadElement: 'SpreadElement',
        SpreadProperty: 'SpreadProperty',
        SwitchCase: 'SwitchCase',
        SwitchStatement: 'SwitchStatement',
        TaggedTemplateExpression: 'TaggedTemplateExpression',
        TemplateElement: 'TemplateElement',
        TemplateLiteral: 'TemplateLiteral',
        ThisExpression: 'ThisExpression',
        ThrowStatement: 'ThrowStatement',
        TryStatement: 'TryStatement',
        TypeAnnotatedIdentifier: 'TypeAnnotatedIdentifier',
        TypeAnnotation: 'TypeAnnotation',
        UnaryExpression: 'UnaryExpression',
        UnionTypeAnnotation: 'UnionTypeAnnotation',
        UpdateExpression: 'UpdateExpression',
        VariableDeclaration: 'VariableDeclaration',
        VariableDeclarator: 'VariableDeclarator',
        VoidTypeAnnotation: 'VoidTypeAnnotation',
        WhileStatement: 'WhileStatement',
        WithStatement: 'WithStatement',
        XJSIdentifier: 'XJSIdentifier',
        XJSNamespacedName: 'XJSNamespacedName',
        XJSMemberExpression: 'XJSMemberExpression',
        XJSEmptyExpression: 'XJSEmptyExpression',
        XJSExpressionContainer: 'XJSExpressionContainer',
        XJSElement: 'XJSElement',
        XJSClosingElement: 'XJSClosingElement',
        XJSOpeningElement: 'XJSOpeningElement',
        XJSAttribute: 'XJSAttribute',
        XJSSpreadAttribute: 'XJSSpreadAttribute',
        XJSText: 'XJSText',
        YieldExpression: 'YieldExpression',
        AwaitExpression: 'AwaitExpression'
    };

    PropertyKind = {
        Data: 1,
        Get: 2,
        Set: 4
    };

    ClassPropertyType = {
        'static': 'static',
        prototype: 'prototype'
    };

    // Error messages should be identical to V8.
    Messages = {
        UnexpectedToken:  'Unexpected token %0',
        UnexpectedNumber:  'Unexpected number',
        UnexpectedString:  'Unexpected string',
        UnexpectedIdentifier:  'Unexpected identifier',
        UnexpectedReserved:  'Unexpected reserved word',
        UnexpectedTemplate:  'Unexpected quasi %0',
        UnexpectedEOS:  'Unexpected end of input',
        NewlineAfterThrow:  'Illegal newline after throw',
        InvalidRegExp: 'Invalid regular expression',
        UnterminatedRegExp:  'Invalid regular expression: missing /',
        InvalidLHSInAssignment:  'Invalid left-hand side in assignment',
        InvalidLHSInFormalsList:  'Invalid left-hand side in formals list',
        InvalidLHSInForIn:  'Invalid left-hand side in for-in',
        MultipleDefaultsInSwitch: 'More than one default clause in switch statement',
        NoCatchOrFinally:  'Missing catch or finally after try',
        UnknownLabel: 'Undefined label \'%0\'',
        Redeclaration: '%0 \'%1\' has already been declared',
        IllegalContinue: 'Illegal continue statement',
        IllegalBreak: 'Illegal break statement',
        IllegalDuplicateClassProperty: 'Illegal duplicate property in class definition',
        IllegalReturn: 'Illegal return statement',
        IllegalSpread: 'Illegal spread element',
        StrictModeWith:  'Strict mode code may not include a with statement',
        StrictCatchVariable:  'Catch variable may not be eval or arguments in strict mode',
        StrictVarName:  'Variable name may not be eval or arguments in strict mode',
        StrictParamName:  'Parameter name eval or arguments is not allowed in strict mode',
        StrictParamDupe: 'Strict mode function may not have duplicate parameter names',
        ParameterAfterRestParameter: 'Rest parameter must be final parameter of an argument list',
        DefaultRestParameter: 'Rest parameter can not have a default value',
        ElementAfterSpreadElement: 'Spread must be the final element of an element list',
        PropertyAfterSpreadProperty: 'A rest property must be the final property of an object literal',
        ObjectPatternAsRestParameter: 'Invalid rest parameter',
        ObjectPatternAsSpread: 'Invalid spread argument',
        StrictFunctionName:  'Function name may not be eval or arguments in strict mode',
        StrictOctalLiteral:  'Octal literals are not allowed in strict mode.',
        StrictDelete:  'Delete of an unqualified identifier in strict mode.',
        StrictDuplicateProperty:  'Duplicate data property in object literal not allowed in strict mode',
        AccessorDataProperty:  'Object literal may not have data and accessor property with the same name',
        AccessorGetSet:  'Object literal may not have multiple get/set accessors with the same name',
        StrictLHSAssignment:  'Assignment to eval or arguments is not allowed in strict mode',
        StrictLHSPostfix:  'Postfix increment/decrement may not have eval or arguments operand in strict mode',
        StrictLHSPrefix:  'Prefix increment/decrement may not have eval or arguments operand in strict mode',
        StrictReservedWord:  'Use of future reserved word in strict mode',
        MissingFromClause: 'Missing from clause',
        NoAsAfterImportNamespace: 'Missing as after import *',
        InvalidModuleSpecifier: 'Invalid module specifier',
        NoUnintializedConst: 'Const must be initialized',
        ComprehensionRequiresBlock: 'Comprehension must have at least one block',
        ComprehensionError:  'Comprehension Error',
        EachNotAllowed:  'Each is not supported',
        InvalidXJSAttributeValue: 'XJS value should be either an expression or a quoted XJS text',
        ExpectedXJSClosingTag: 'Expected corresponding XJS closing tag for %0',
        AdjacentXJSElements: 'Adjacent XJS elements must be wrapped in an enclosing tag'
    };

    // See also tools/generate-unicode-regex.py.
    Regex = {
        NonAsciiIdentifierStart: new RegExp('[\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0\u08a2-\u08ac\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097f\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d\u0c58\u0c59\u0c60\u0c61\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d60\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191c\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19c1-\u19c7\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2e2f\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua697\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa80-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]'),
        NonAsciiIdentifierPart: new RegExp('[\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0300-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u0483-\u0487\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u05d0-\u05ea\u05f0-\u05f2\u0610-\u061a\u0620-\u0669\u066e-\u06d3\u06d5-\u06dc\u06df-\u06e8\u06ea-\u06fc\u06ff\u0710-\u074a\u074d-\u07b1\u07c0-\u07f5\u07fa\u0800-\u082d\u0840-\u085b\u08a0\u08a2-\u08ac\u08e4-\u08fe\u0900-\u0963\u0966-\u096f\u0971-\u0977\u0979-\u097f\u0981-\u0983\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bc-\u09c4\u09c7\u09c8\u09cb-\u09ce\u09d7\u09dc\u09dd\u09df-\u09e3\u09e6-\u09f1\u0a01-\u0a03\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a59-\u0a5c\u0a5e\u0a66-\u0a75\u0a81-\u0a83\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abc-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ad0\u0ae0-\u0ae3\u0ae6-\u0aef\u0b01-\u0b03\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3c-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b56\u0b57\u0b5c\u0b5d\u0b5f-\u0b63\u0b66-\u0b6f\u0b71\u0b82\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd0\u0bd7\u0be6-\u0bef\u0c01-\u0c03\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d-\u0c44\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c58\u0c59\u0c60-\u0c63\u0c66-\u0c6f\u0c82\u0c83\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbc-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0cde\u0ce0-\u0ce3\u0ce6-\u0cef\u0cf1\u0cf2\u0d02\u0d03\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d-\u0d44\u0d46-\u0d48\u0d4a-\u0d4e\u0d57\u0d60-\u0d63\u0d66-\u0d6f\u0d7a-\u0d7f\u0d82\u0d83\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0df2\u0df3\u0e01-\u0e3a\u0e40-\u0e4e\u0e50-\u0e59\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb9\u0ebb-\u0ebd\u0ec0-\u0ec4\u0ec6\u0ec8-\u0ecd\u0ed0-\u0ed9\u0edc-\u0edf\u0f00\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f3e-\u0f47\u0f49-\u0f6c\u0f71-\u0f84\u0f86-\u0f97\u0f99-\u0fbc\u0fc6\u1000-\u1049\u1050-\u109d\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u135d-\u135f\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1714\u1720-\u1734\u1740-\u1753\u1760-\u176c\u176e-\u1770\u1772\u1773\u1780-\u17d3\u17d7\u17dc\u17dd\u17e0-\u17e9\u180b-\u180d\u1810-\u1819\u1820-\u1877\u1880-\u18aa\u18b0-\u18f5\u1900-\u191c\u1920-\u192b\u1930-\u193b\u1946-\u196d\u1970-\u1974\u1980-\u19ab\u19b0-\u19c9\u19d0-\u19d9\u1a00-\u1a1b\u1a20-\u1a5e\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1aa7\u1b00-\u1b4b\u1b50-\u1b59\u1b6b-\u1b73\u1b80-\u1bf3\u1c00-\u1c37\u1c40-\u1c49\u1c4d-\u1c7d\u1cd0-\u1cd2\u1cd4-\u1cf6\u1d00-\u1de6\u1dfc-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u200c\u200d\u203f\u2040\u2054\u2071\u207f\u2090-\u209c\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d7f-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2de0-\u2dff\u2e2f\u3005-\u3007\u3021-\u302f\u3031-\u3035\u3038-\u303c\u3041-\u3096\u3099\u309a\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua62b\ua640-\ua66f\ua674-\ua67d\ua67f-\ua697\ua69f-\ua6f1\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua827\ua840-\ua873\ua880-\ua8c4\ua8d0-\ua8d9\ua8e0-\ua8f7\ua8fb\ua900-\ua92d\ua930-\ua953\ua960-\ua97c\ua980-\ua9c0\ua9cf-\ua9d9\uaa00-\uaa36\uaa40-\uaa4d\uaa50-\uaa59\uaa60-\uaa76\uaa7a\uaa7b\uaa80-\uaac2\uaadb-\uaadd\uaae0-\uaaef\uaaf2-\uaaf6\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabea\uabec\uabed\uabf0-\uabf9\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe00-\ufe0f\ufe20-\ufe26\ufe33\ufe34\ufe4d-\ufe4f\ufe70-\ufe74\ufe76-\ufefc\uff10-\uff19\uff21-\uff3a\uff3f\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]'),
        LeadingZeros: new RegExp('^0+(?!$)')
    };

    // Ensure the condition is true, otherwise throw an error.
    // This is only to have a better contract semantic, i.e. another safety net
    // to catch a logic error. The condition shall be fulfilled in normal case.
    // Do NOT use this to enforce a certain condition on any user input.

    function assert(condition, message) {
        if (!condition) {
            throw new Error('ASSERT: ' + message);
        }
    }

    function isDecimalDigit(ch) {
        return (ch >= 48 && ch <= 57);   // 0..9
    }

    function isHexDigit(ch) {
        return '0123456789abcdefABCDEF'.indexOf(ch) >= 0;
    }

    function isOctalDigit(ch) {
        return '01234567'.indexOf(ch) >= 0;
    }


    // 7.2 White Space

    function isWhiteSpace(ch) {
        return (ch === 32) ||  // space
            (ch === 9) ||      // tab
            (ch === 0xB) ||
            (ch === 0xC) ||
            (ch === 0xA0) ||
            (ch >= 0x1680 && '\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\uFEFF'.indexOf(String.fromCharCode(ch)) > 0);
    }

    // 7.3 Line Terminators

    function isLineTerminator(ch) {
        return (ch === 10) || (ch === 13) || (ch === 0x2028) || (ch === 0x2029);
    }

    // 7.6 Identifier Names and Identifiers

    function isIdentifierStart(ch) {
        return (ch === 36) || (ch === 95) ||  // $ (dollar) and _ (underscore)
            (ch >= 65 && ch <= 90) ||         // A..Z
            (ch >= 97 && ch <= 122) ||        // a..z
            (ch === 92) ||                    // \ (backslash)
            ((ch >= 0x80) && Regex.NonAsciiIdentifierStart.test(String.fromCharCode(ch)));
    }

    function isIdentifierPart(ch) {
        return (ch === 36) || (ch === 95) ||  // $ (dollar) and _ (underscore)
            (ch >= 65 && ch <= 90) ||         // A..Z
            (ch >= 97 && ch <= 122) ||        // a..z
            (ch >= 48 && ch <= 57) ||         // 0..9
            (ch === 92) ||                    // \ (backslash)
            ((ch >= 0x80) && Regex.NonAsciiIdentifierPart.test(String.fromCharCode(ch)));
    }

    // 7.6.1.2 Future Reserved Words

    function isFutureReservedWord(id) {
        switch (id) {
        case 'class':
        case 'enum':
        case 'export':
        case 'extends':
        case 'import':
        case 'super':
            return true;
        default:
            return false;
        }
    }

    function isStrictModeReservedWord(id) {
        switch (id) {
        case 'implements':
        case 'interface':
        case 'package':
        case 'private':
        case 'protected':
        case 'public':
        case 'static':
        case 'yield':
        case 'let':
            return true;
        default:
            return false;
        }
    }

    function isRestrictedWord(id) {
        return id === 'eval' || id === 'arguments';
    }

    // 7.6.1.1 Keywords

    function isKeyword(id) {
        if (strict && isStrictModeReservedWord(id)) {
            return true;
        }

        // 'const' is specialized as Keyword in V8.
        // 'yield' is only treated as a keyword in strict mode.
        // 'let' is for compatiblity with SpiderMonkey and ES.next.
        // Some others are from future reserved words.

        switch (id.length) {
        case 2:
            return (id === 'if') || (id === 'in') || (id === 'do');
        case 3:
            return (id === 'var') || (id === 'for') || (id === 'new') ||
                (id === 'try') || (id === 'let');
        case 4:
            return (id === 'this') || (id === 'else') || (id === 'case') ||
                (id === 'void') || (id === 'with') || (id === 'enum');
        case 5:
            return (id === 'while') || (id === 'break') || (id === 'catch') ||
                (id === 'throw') || (id === 'const') ||
                (id === 'class') || (id === 'super');
        case 6:
            return (id === 'return') || (id === 'typeof') || (id === 'delete') ||
                (id === 'switch') || (id === 'export') || (id === 'import');
        case 7:
            return (id === 'default') || (id === 'finally') || (id === 'extends');
        case 8:
            return (id === 'function') || (id === 'continue') || (id === 'debugger');
        case 10:
            return (id === 'instanceof');
        default:
            return false;
        }
    }

    // 7.4 Comments

    function skipComment() {
        var ch, blockComment, lineComment;

        blockComment = false;
        lineComment = false;

        while (index < length) {
            ch = source.charCodeAt(index);

            if (lineComment) {
                ++index;
                if (isLineTerminator(ch)) {
                    lineComment = false;
                    if (ch === 13 && source.charCodeAt(index) === 10) {
                        ++index;
                    }
                    ++lineNumber;
                    lineStart = index;
                }
            } else if (blockComment) {
                if (isLineTerminator(ch)) {
                    if (ch === 13) {
                        ++index;
                    }
                    if (ch !== 13 || source.charCodeAt(index) === 10) {
                        ++lineNumber;
                        ++index;
                        lineStart = index;
                        if (index >= length) {
                            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                        }
                    }
                } else {
                    ch = source.charCodeAt(index++);
                    if (index >= length) {
                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                    }
                    // Block comment ends with '*/' (char #42, char #47).
                    if (ch === 42) {
                        ch = source.charCodeAt(index);
                        if (ch === 47) {
                            ++index;
                            blockComment = false;
                        }
                    }
                }
            } else if (ch === 47) {
                ch = source.charCodeAt(index + 1);
                // Line comment starts with '//' (char #47, char #47).
                if (ch === 47) {
                    index += 2;
                    lineComment = true;
                } else if (ch === 42) {
                    // Block comment starts with '/*' (char #47, char #42).
                    index += 2;
                    blockComment = true;
                    if (index >= length) {
                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                    }
                } else {
                    break;
                }
            } else if (isWhiteSpace(ch)) {
                ++index;
            } else if (isLineTerminator(ch)) {
                ++index;
                if (ch === 13 && source.charCodeAt(index) === 10) {
                    ++index;
                }
                ++lineNumber;
                lineStart = index;
            } else {
                break;
            }
        }
    }

    function scanHexEscape(prefix) {
        var i, len, ch, code = 0;

        len = (prefix === 'u') ? 4 : 2;
        for (i = 0; i < len; ++i) {
            if (index < length && isHexDigit(source[index])) {
                ch = source[index++];
                code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase());
            } else {
                return '';
            }
        }
        return String.fromCharCode(code);
    }

    function scanUnicodeCodePointEscape() {
        var ch, code, cu1, cu2;

        ch = source[index];
        code = 0;

        // At least, one hex digit is required.
        if (ch === '}') {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        while (index < length) {
            ch = source[index++];
            if (!isHexDigit(ch)) {
                break;
            }
            code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase());
        }

        if (code > 0x10FFFF || ch !== '}') {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        // UTF-16 Encoding
        if (code <= 0xFFFF) {
            return String.fromCharCode(code);
        }
        cu1 = ((code - 0x10000) >> 10) + 0xD800;
        cu2 = ((code - 0x10000) & 1023) + 0xDC00;
        return String.fromCharCode(cu1, cu2);
    }

    function getEscapedIdentifier() {
        var ch, id;

        ch = source.charCodeAt(index++);
        id = String.fromCharCode(ch);

        // '\u' (char #92, char #117) denotes an escaped character.
        if (ch === 92) {
            if (source.charCodeAt(index) !== 117) {
                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
            }
            ++index;
            ch = scanHexEscape('u');
            if (!ch || ch === '\\' || !isIdentifierStart(ch.charCodeAt(0))) {
                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
            }
            id = ch;
        }

        while (index < length) {
            ch = source.charCodeAt(index);
            if (!isIdentifierPart(ch)) {
                break;
            }
            ++index;
            id += String.fromCharCode(ch);

            // '\u' (char #92, char #117) denotes an escaped character.
            if (ch === 92) {
                id = id.substr(0, id.length - 1);
                if (source.charCodeAt(index) !== 117) {
                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                }
                ++index;
                ch = scanHexEscape('u');
                if (!ch || ch === '\\' || !isIdentifierPart(ch.charCodeAt(0))) {
                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                }
                id += ch;
            }
        }

        return id;
    }

    function getIdentifier() {
        var start, ch;

        start = index++;
        while (index < length) {
            ch = source.charCodeAt(index);
            if (ch === 92) {
                // Blackslash (char #92) marks Unicode escape sequence.
                index = start;
                return getEscapedIdentifier();
            }
            if (isIdentifierPart(ch)) {
                ++index;
            } else {
                break;
            }
        }

        return source.slice(start, index);
    }

    function scanIdentifier() {
        var start, id, type;

        start = index;

        // Backslash (char #92) starts an escaped character.
        id = (source.charCodeAt(index) === 92) ? getEscapedIdentifier() : getIdentifier();

        // There is no keyword or literal with only one character.
        // Thus, it must be an identifier.
        if (id.length === 1) {
            type = Token.Identifier;
        } else if (isKeyword(id)) {
            type = Token.Keyword;
        } else if (id === 'null') {
            type = Token.NullLiteral;
        } else if (id === 'true' || id === 'false') {
            type = Token.BooleanLiteral;
        } else {
            type = Token.Identifier;
        }

        return {
            type: type,
            value: id,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }


    // 7.7 Punctuators

    function scanPunctuator() {
        var start = index,
            code = source.charCodeAt(index),
            code2,
            ch1 = source[index],
            ch2,
            ch3,
            ch4;

        switch (code) {
        // Check for most common single-character punctuators.
        case 40:   // ( open bracket
        case 41:   // ) close bracket
        case 59:   // ; semicolon
        case 44:   // , comma
        case 123:  // { open curly brace
        case 125:  // } close curly brace
        case 91:   // [
        case 93:   // ]
        case 58:   // :
        case 63:   // ?
        case 126:  // ~
            ++index;
            if (extra.tokenize) {
                if (code === 40) {
                    extra.openParenToken = extra.tokens.length;
                } else if (code === 123) {
                    extra.openCurlyToken = extra.tokens.length;
                }
            }
            return {
                type: Token.Punctuator,
                value: String.fromCharCode(code),
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };

        default:
            code2 = source.charCodeAt(index + 1);

            // '=' (char #61) marks an assignment or comparison operator.
            if (code2 === 61) {
                switch (code) {
                case 37:  // %
                case 38:  // &
                case 42:  // *:
                case 43:  // +
                case 45:  // -
                case 47:  // /
                case 60:  // <
                case 62:  // >
                case 94:  // ^
                case 124: // |
                    index += 2;
                    return {
                        type: Token.Punctuator,
                        value: String.fromCharCode(code) + String.fromCharCode(code2),
                        lineNumber: lineNumber,
                        lineStart: lineStart,
                        range: [start, index]
                    };

                case 33: // !
                case 61: // =
                    index += 2;

                    // !== and ===
                    if (source.charCodeAt(index) === 61) {
                        ++index;
                    }
                    return {
                        type: Token.Punctuator,
                        value: source.slice(start, index),
                        lineNumber: lineNumber,
                        lineStart: lineStart,
                        range: [start, index]
                    };
                default:
                    break;
                }
            }
            break;
        }

        // Peek more characters.

        ch2 = source[index + 1];
        ch3 = source[index + 2];
        ch4 = source[index + 3];

        // 4-character punctuator: >>>=

        if (ch1 === '>' && ch2 === '>' && ch3 === '>') {
            if (ch4 === '=') {
                index += 4;
                return {
                    type: Token.Punctuator,
                    value: '>>>=',
                    lineNumber: lineNumber,
                    lineStart: lineStart,
                    range: [start, index]
                };
            }
        }

        // 3-character punctuators: === !== >>> <<= >>=

        if (ch1 === '>' && ch2 === '>' && ch3 === '>') {
            index += 3;
            return {
                type: Token.Punctuator,
                value: '>>>',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '<' && ch2 === '<' && ch3 === '=') {
            index += 3;
            return {
                type: Token.Punctuator,
                value: '<<=',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '>' && ch2 === '>' && ch3 === '=') {
            index += 3;
            return {
                type: Token.Punctuator,
                value: '>>=',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '.' && ch2 === '.' && ch3 === '.') {
            index += 3;
            return {
                type: Token.Punctuator,
                value: '...',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        // Other 2-character punctuators: ++ -- << >> && ||

        if (ch1 === ch2 && ('+-<>&|'.indexOf(ch1) >= 0)) {
            index += 2;
            return {
                type: Token.Punctuator,
                value: ch1 + ch2,
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '=' && ch2 === '>') {
            index += 2;
            return {
                type: Token.Punctuator,
                value: '=>',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if ('<>=!+-*%&|^/'.indexOf(ch1) >= 0) {
            ++index;
            return {
                type: Token.Punctuator,
                value: ch1,
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '.') {
            ++index;
            return {
                type: Token.Punctuator,
                value: ch1,
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
    }

    // 7.8.3 Numeric Literals

    function scanHexLiteral(start) {
        var number = '';

        while (index < length) {
            if (!isHexDigit(source[index])) {
                break;
            }
            number += source[index++];
        }

        if (number.length === 0) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        if (isIdentifierStart(source.charCodeAt(index))) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        return {
            type: Token.NumericLiteral,
            value: parseInt('0x' + number, 16),
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanOctalLiteral(prefix, start) {
        var number, octal;

        if (isOctalDigit(prefix)) {
            octal = true;
            number = '0' + source[index++];
        } else {
            octal = false;
            ++index;
            number = '';
        }

        while (index < length) {
            if (!isOctalDigit(source[index])) {
                break;
            }
            number += source[index++];
        }

        if (!octal && number.length === 0) {
            // only 0o or 0O
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        if (isIdentifierStart(source.charCodeAt(index)) || isDecimalDigit(source.charCodeAt(index))) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        return {
            type: Token.NumericLiteral,
            value: parseInt(number, 8),
            octal: octal,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanNumericLiteral() {
        var number, start, ch, octal;

        ch = source[index];
        assert(isDecimalDigit(ch.charCodeAt(0)) || (ch === '.'),
            'Numeric literal must start with a decimal digit or a decimal point');

        start = index;
        number = '';
        if (ch !== '.') {
            number = source[index++];
            ch = source[index];

            // Hex number starts with '0x'.
            // Octal number starts with '0'.
            // Octal number in ES6 starts with '0o'.
            // Binary number in ES6 starts with '0b'.
            if (number === '0') {
                if (ch === 'x' || ch === 'X') {
                    ++index;
                    return scanHexLiteral(start);
                }
                if (ch === 'b' || ch === 'B') {
                    ++index;
                    number = '';

                    while (index < length) {
                        ch = source[index];
                        if (ch !== '0' && ch !== '1') {
                            break;
                        }
                        number += source[index++];
                    }

                    if (number.length === 0) {
                        // only 0b or 0B
                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                    }

                    if (index < length) {
                        ch = source.charCodeAt(index);
                        if (isIdentifierStart(ch) || isDecimalDigit(ch)) {
                            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                        }
                    }
                    return {
                        type: Token.NumericLiteral,
                        value: parseInt(number, 2),
                        lineNumber: lineNumber,
                        lineStart: lineStart,
                        range: [start, index]
                    };
                }
                if (ch === 'o' || ch === 'O' || isOctalDigit(ch)) {
                    return scanOctalLiteral(ch, start);
                }
                // decimal number starts with '0' such as '09' is illegal.
                if (ch && isDecimalDigit(ch.charCodeAt(0))) {
                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                }
            }

            while (isDecimalDigit(source.charCodeAt(index))) {
                number += source[index++];
            }
            ch = source[index];
        }

        if (ch === '.') {
            number += source[index++];
            while (isDecimalDigit(source.charCodeAt(index))) {
                number += source[index++];
            }
            ch = source[index];
        }

        if (ch === 'e' || ch === 'E') {
            number += source[index++];

            ch = source[index];
            if (ch === '+' || ch === '-') {
                number += source[index++];
            }
            if (isDecimalDigit(source.charCodeAt(index))) {
                while (isDecimalDigit(source.charCodeAt(index))) {
                    number += source[index++];
                }
            } else {
                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
            }
        }

        if (isIdentifierStart(source.charCodeAt(index))) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        return {
            type: Token.NumericLiteral,
            value: parseFloat(number),
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    // 7.8.4 String Literals

    function scanStringLiteral() {
        var str = '', quote, start, ch, code, unescaped, restore, octal = false;

        quote = source[index];
        assert((quote === '\'' || quote === '"'),
            'String literal must starts with a quote');

        start = index;
        ++index;

        while (index < length) {
            ch = source[index++];

            if (ch === quote) {
                quote = '';
                break;
            } else if (ch === '\\') {
                ch = source[index++];
                if (!ch || !isLineTerminator(ch.charCodeAt(0))) {
                    switch (ch) {
                    case 'n':
                        str += '\n';
                        break;
                    case 'r':
                        str += '\r';
                        break;
                    case 't':
                        str += '\t';
                        break;
                    case 'u':
                    case 'x':
                        if (source[index] === '{') {
                            ++index;
                            str += scanUnicodeCodePointEscape();
                        } else {
                            restore = index;
                            unescaped = scanHexEscape(ch);
                            if (unescaped) {
                                str += unescaped;
                            } else {
                                index = restore;
                                str += ch;
                            }
                        }
                        break;
                    case 'b':
                        str += '\b';
                        break;
                    case 'f':
                        str += '\f';
                        break;
                    case 'v':
                        str += '\x0B';
                        break;

                    default:
                        if (isOctalDigit(ch)) {
                            code = '01234567'.indexOf(ch);

                            // \0 is not octal escape sequence
                            if (code !== 0) {
                                octal = true;
                            }

                            if (index < length && isOctalDigit(source[index])) {
                                octal = true;
                                code = code * 8 + '01234567'.indexOf(source[index++]);

                                // 3 digits are only allowed when string starts
                                // with 0, 1, 2, 3
                                if ('0123'.indexOf(ch) >= 0 &&
                                        index < length &&
                                        isOctalDigit(source[index])) {
                                    code = code * 8 + '01234567'.indexOf(source[index++]);
                                }
                            }
                            str += String.fromCharCode(code);
                        } else {
                            str += ch;
                        }
                        break;
                    }
                } else {
                    ++lineNumber;
                    if (ch ===  '\r' && source[index] === '\n') {
                        ++index;
                    }
                    lineStart = index;
                }
            } else if (isLineTerminator(ch.charCodeAt(0))) {
                break;
            } else {
                str += ch;
            }
        }

        if (quote !== '') {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        return {
            type: Token.StringLiteral,
            value: str,
            octal: octal,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanTemplate() {
        var cooked = '', ch, start, terminated, tail, restore, unescaped, code, octal;

        terminated = false;
        tail = false;
        start = index;

        ++index;

        while (index < length) {
            ch = source[index++];
            if (ch === '`') {
                tail = true;
                terminated = true;
                break;
            } else if (ch === '$') {
                if (source[index] === '{') {
                    ++index;
                    terminated = true;
                    break;
                }
                cooked += ch;
            } else if (ch === '\\') {
                ch = source[index++];
                if (!isLineTerminator(ch.charCodeAt(0))) {
                    switch (ch) {
                    case 'n':
                        cooked += '\n';
                        break;
                    case 'r':
                        cooked += '\r';
                        break;
                    case 't':
                        cooked += '\t';
                        break;
                    case 'u':
                    case 'x':
                        if (source[index] === '{') {
                            ++index;
                            cooked += scanUnicodeCodePointEscape();
                        } else {
                            restore = index;
                            unescaped = scanHexEscape(ch);
                            if (unescaped) {
                                cooked += unescaped;
                            } else {
                                index = restore;
                                cooked += ch;
                            }
                        }
                        break;
                    case 'b':
                        cooked += '\b';
                        break;
                    case 'f':
                        cooked += '\f';
                        break;
                    case 'v':
                        cooked += '\v';
                        break;

                    default:
                        if (isOctalDigit(ch)) {
                            code = '01234567'.indexOf(ch);

                            // \0 is not octal escape sequence
                            if (code !== 0) {
                                octal = true;
                            }

                            if (index < length && isOctalDigit(source[index])) {
                                octal = true;
                                code = code * 8 + '01234567'.indexOf(source[index++]);

                                // 3 digits are only allowed when string starts
                                // with 0, 1, 2, 3
                                if ('0123'.indexOf(ch) >= 0 &&
                                        index < length &&
                                        isOctalDigit(source[index])) {
                                    code = code * 8 + '01234567'.indexOf(source[index++]);
                                }
                            }
                            cooked += String.fromCharCode(code);
                        } else {
                            cooked += ch;
                        }
                        break;
                    }
                } else {
                    ++lineNumber;
                    if (ch ===  '\r' && source[index] === '\n') {
                        ++index;
                    }
                    lineStart = index;
                }
            } else if (isLineTerminator(ch.charCodeAt(0))) {
                ++lineNumber;
                if (ch ===  '\r' && source[index] === '\n') {
                    ++index;
                }
                lineStart = index;
                cooked += '\n';
            } else {
                cooked += ch;
            }
        }

        if (!terminated) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        return {
            type: Token.Template,
            value: {
                cooked: cooked,
                raw: source.slice(start + 1, index - ((tail) ? 1 : 2))
            },
            tail: tail,
            octal: octal,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanTemplateElement(option) {
        var startsWith, template;

        lookahead = null;
        skipComment();

        startsWith = (option.head) ? '`' : '}';

        if (source[index] !== startsWith) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        template = scanTemplate();

        peek();

        return template;
    }

    function scanRegExp() {
        var str, ch, start, pattern, flags, value, classMarker = false, restore, terminated = false, tmp;

        lookahead = null;
        skipComment();

        start = index;
        ch = source[index];
        assert(ch === '/', 'Regular expression literal must start with a slash');
        str = source[index++];

        while (index < length) {
            ch = source[index++];
            str += ch;
            if (classMarker) {
                if (ch === ']') {
                    classMarker = false;
                }
            } else {
                if (ch === '\\') {
                    ch = source[index++];
                    // ECMA-262 7.8.5
                    if (isLineTerminator(ch.charCodeAt(0))) {
                        throwError({}, Messages.UnterminatedRegExp);
                    }
                    str += ch;
                } else if (ch === '/') {
                    terminated = true;
                    break;
                } else if (ch === '[') {
                    classMarker = true;
                } else if (isLineTerminator(ch.charCodeAt(0))) {
                    throwError({}, Messages.UnterminatedRegExp);
                }
            }
        }

        if (!terminated) {
            throwError({}, Messages.UnterminatedRegExp);
        }

        // Exclude leading and trailing slash.
        pattern = str.substr(1, str.length - 2);

        flags = '';
        while (index < length) {
            ch = source[index];
            if (!isIdentifierPart(ch.charCodeAt(0))) {
                break;
            }

            ++index;
            if (ch === '\\' && index < length) {
                ch = source[index];
                if (ch === 'u') {
                    ++index;
                    restore = index;
                    ch = scanHexEscape('u');
                    if (ch) {
                        flags += ch;
                        for (str += '\\u'; restore < index; ++restore) {
                            str += source[restore];
                        }
                    } else {
                        index = restore;
                        flags += 'u';
                        str += '\\u';
                    }
                } else {
                    str += '\\';
                }
            } else {
                flags += ch;
                str += ch;
            }
        }

        tmp = pattern;
        if (flags.indexOf('u') >= 0) {
            // Replace each astral symbol and every Unicode code point
            // escape sequence that represents such a symbol with a single
            // ASCII symbol to avoid throwing on regular expressions that
            // are only valid in combination with the `/u` flag.
            tmp = tmp
                .replace(/\\u\{([0-9a-fA-F]{5,6})\}/g, 'x')
                .replace(/[\uD800-\uDBFF][\uDC00-\uDFFF]/g, 'x');
        }

        // First, detect invalid regular expressions.
        try {
            value = new RegExp(tmp);
        } catch (e) {
            throwError({}, Messages.InvalidRegExp);
        }

        // Return a regular expression object for this pattern-flag pair, or
        // `null` in case the current environment doesn't support the flags it
        // uses.
        try {
            value = new RegExp(pattern, flags);
        } catch (exception) {
            value = null;
        }

        peek();

        if (extra.tokenize) {
            return {
                type: Token.RegularExpression,
                value: value,
                regex: {
                    pattern: pattern,
                    flags: flags
                },
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }
        return {
            literal: str,
            value: value,
            regex: {
                pattern: pattern,
                flags: flags
            },
            range: [start, index]
        };
    }

    function isIdentifierName(token) {
        return token.type === Token.Identifier ||
            token.type === Token.Keyword ||
            token.type === Token.BooleanLiteral ||
            token.type === Token.NullLiteral;
    }

    function advanceSlash() {
        var prevToken,
            checkToken;
        // Using the following algorithm:
        // https://github.com/mozilla/sweet.js/wiki/design
        prevToken = extra.tokens[extra.tokens.length - 1];
        if (!prevToken) {
            // Nothing before that: it cannot be a division.
            return scanRegExp();
        }
        if (prevToken.type === 'Punctuator') {
            if (prevToken.value === ')') {
                checkToken = extra.tokens[extra.openParenToken - 1];
                if (checkToken &&
                        checkToken.type === 'Keyword' &&
                        (checkToken.value === 'if' ||
                         checkToken.value === 'while' ||
                         checkToken.value === 'for' ||
                         checkToken.value === 'with')) {
                    return scanRegExp();
                }
                return scanPunctuator();
            }
            if (prevToken.value === '}') {
                // Dividing a function by anything makes little sense,
                // but we have to check for that.
                if (extra.tokens[extra.openCurlyToken - 3] &&
                        extra.tokens[extra.openCurlyToken - 3].type === 'Keyword') {
                    // Anonymous function.
                    checkToken = extra.tokens[extra.openCurlyToken - 4];
                    if (!checkToken) {
                        return scanPunctuator();
                    }
                } else if (extra.tokens[extra.openCurlyToken - 4] &&
                        extra.tokens[extra.openCurlyToken - 4].type === 'Keyword') {
                    // Named function.
                    checkToken = extra.tokens[extra.openCurlyToken - 5];
                    if (!checkToken) {
                        return scanRegExp();
                    }
                } else {
                    return scanPunctuator();
                }
                // checkToken determines whether the function is
                // a declaration or an expression.
                if (FnExprTokens.indexOf(checkToken.value) >= 0) {
                    // It is an expression.
                    return scanPunctuator();
                }
                // It is a declaration.
                return scanRegExp();
            }
            return scanRegExp();
        }
        if (prevToken.type === 'Keyword') {
            return scanRegExp();
        }
        return scanPunctuator();
    }

    function advance() {
        var ch;

        if (!state.inXJSChild) {
            skipComment();
        }

        if (index >= length) {
            return {
                type: Token.EOF,
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [index, index]
            };
        }

        if (state.inXJSChild) {
            return advanceXJSChild();
        }

        ch = source.charCodeAt(index);

        // Very common: ( and ) and ;
        if (ch === 40 || ch === 41 || ch === 58) {
            return scanPunctuator();
        }

        // String literal starts with single quote (#39) or double quote (#34).
        if (ch === 39 || ch === 34) {
            if (state.inXJSTag) {
                return scanXJSStringLiteral();
            }
            return scanStringLiteral();
        }

        if (state.inXJSTag && isXJSIdentifierStart(ch)) {
            return scanXJSIdentifier();
        }

        if (ch === 96) {
            return scanTemplate();
        }
        if (isIdentifierStart(ch)) {
            return scanIdentifier();
        }

        // Dot (.) char #46 can also start a floating-point number, hence the need
        // to check the next character.
        if (ch === 46) {
            if (isDecimalDigit(source.charCodeAt(index + 1))) {
                return scanNumericLiteral();
            }
            return scanPunctuator();
        }

        if (isDecimalDigit(ch)) {
            return scanNumericLiteral();
        }

        // Slash (/) char #47 can also start a regex.
        if (extra.tokenize && ch === 47) {
            return advanceSlash();
        }

        return scanPunctuator();
    }

    function lex() {
        var token;

        token = lookahead;
        index = token.range[1];
        lineNumber = token.lineNumber;
        lineStart = token.lineStart;

        lookahead = advance();

        index = token.range[1];
        lineNumber = token.lineNumber;
        lineStart = token.lineStart;

        return token;
    }

    function peek() {
        var pos, line, start;

        pos = index;
        line = lineNumber;
        start = lineStart;
        lookahead = advance();
        index = pos;
        lineNumber = line;
        lineStart = start;
    }

    function lookahead2() {
        var adv, pos, line, start, result;

        // If we are collecting the tokens, don't grab the next one yet.
        adv = (typeof extra.advance === 'function') ? extra.advance : advance;

        pos = index;
        line = lineNumber;
        start = lineStart;

        // Scan for the next immediate token.
        if (lookahead === null) {
            lookahead = adv();
        }
        index = lookahead.range[1];
        lineNumber = lookahead.lineNumber;
        lineStart = lookahead.lineStart;

        // Grab the token right after.
        result = adv();
        index = pos;
        lineNumber = line;
        lineStart = start;

        return result;
    }

    function rewind(token) {
        index = token.range[0];
        lineNumber = token.lineNumber;
        lineStart = token.lineStart;
        lookahead = token;
    }

    function markerCreate() {
        if (!extra.loc && !extra.range) {
            return undefined;
        }
        skipComment();
        return {offset: index, line: lineNumber, col: index - lineStart};
    }

    function markerCreatePreserveWhitespace() {
        if (!extra.loc && !extra.range) {
            return undefined;
        }
        return {offset: index, line: lineNumber, col: index - lineStart};
    }

    function processComment(node) {
        var lastChild,
            trailingComments,
            bottomRight = extra.bottomRightStack,
            last = bottomRight[bottomRight.length - 1];

        if (node.type === Syntax.Program) {
            if (node.body.length > 0) {
                return;
            }
        }

        if (extra.trailingComments.length > 0) {
            if (extra.trailingComments[0].range[0] >= node.range[1]) {
                trailingComments = extra.trailingComments;
                extra.trailingComments = [];
            } else {
                extra.trailingComments.length = 0;
            }
        } else {
            if (last && last.trailingComments && last.trailingComments[0].range[0] >= node.range[1]) {
                trailingComments = last.trailingComments;
                delete last.trailingComments;
            }
        }

        // Eating the stack.
        if (last) {
            while (last && last.range[0] >= node.range[0]) {
                lastChild = last;
                last = bottomRight.pop();
            }
        }

        if (lastChild) {
            if (lastChild.leadingComments && lastChild.leadingComments[lastChild.leadingComments.length - 1].range[1] <= node.range[0]) {
                node.leadingComments = lastChild.leadingComments;
                delete lastChild.leadingComments;
            }
        } else if (extra.leadingComments.length > 0 && extra.leadingComments[extra.leadingComments.length - 1].range[1] <= node.range[0]) {
            node.leadingComments = extra.leadingComments;
            extra.leadingComments = [];
        }

        if (trailingComments) {
            node.trailingComments = trailingComments;
        }

        bottomRight.push(node);
    }

    function markerApply(marker, node) {
        if (extra.range) {
            node.range = [marker.offset, index];
        }
        if (extra.loc) {
            node.loc = {
                start: {
                    line: marker.line,
                    column: marker.col
                },
                end: {
                    line: lineNumber,
                    column: index - lineStart
                }
            };
            node = delegate.postProcess(node);
        }
        if (extra.attachComment) {
            processComment(node);
        }
        return node;
    }

    SyntaxTreeDelegate = {

        name: 'SyntaxTree',

        postProcess: function (node) {
            return node;
        },

        createArrayExpression: function (elements) {
            return {
                type: Syntax.ArrayExpression,
                elements: elements
            };
        },

        createAssignmentExpression: function (operator, left, right) {
            return {
                type: Syntax.AssignmentExpression,
                operator: operator,
                left: left,
                right: right
            };
        },

        createBinaryExpression: function (operator, left, right) {
            var type = (operator === '||' || operator === '&&') ? Syntax.LogicalExpression :
                        Syntax.BinaryExpression;
            return {
                type: type,
                operator: operator,
                left: left,
                right: right
            };
        },

        createBlockStatement: function (body) {
            return {
                type: Syntax.BlockStatement,
                body: body
            };
        },

        createBreakStatement: function (label) {
            return {
                type: Syntax.BreakStatement,
                label: label
            };
        },

        createCallExpression: function (callee, args) {
            return {
                type: Syntax.CallExpression,
                callee: callee,
                'arguments': args
            };
        },

        createCatchClause: function (param, body) {
            return {
                type: Syntax.CatchClause,
                param: param,
                body: body
            };
        },

        createConditionalExpression: function (test, consequent, alternate) {
            return {
                type: Syntax.ConditionalExpression,
                test: test,
                consequent: consequent,
                alternate: alternate
            };
        },

        createContinueStatement: function (label) {
            return {
                type: Syntax.ContinueStatement,
                label: label
            };
        },

        createDebuggerStatement: function () {
            return {
                type: Syntax.DebuggerStatement
            };
        },

        createDoWhileStatement: function (body, test) {
            return {
                type: Syntax.DoWhileStatement,
                body: body,
                test: test
            };
        },

        createEmptyStatement: function () {
            return {
                type: Syntax.EmptyStatement
            };
        },

        createExpressionStatement: function (expression) {
            return {
                type: Syntax.ExpressionStatement,
                expression: expression
            };
        },

        createForStatement: function (init, test, update, body) {
            return {
                type: Syntax.ForStatement,
                init: init,
                test: test,
                update: update,
                body: body
            };
        },

        createForInStatement: function (left, right, body) {
            return {
                type: Syntax.ForInStatement,
                left: left,
                right: right,
                body: body,
                each: false
            };
        },

        createForOfStatement: function (left, right, body) {
            return {
                type: Syntax.ForOfStatement,
                left: left,
                right: right,
                body: body
            };
        },

        createFunctionDeclaration: function (id, params, defaults, body, rest, generator, expression,
                                             isAsync, returnType, parametricType) {
            var funDecl = {
                type: Syntax.FunctionDeclaration,
                id: id,
                params: params,
                defaults: defaults,
                body: body,
                rest: rest,
                generator: generator,
                expression: expression,
                returnType: returnType,
                parametricType: parametricType
            };

            if (isAsync) {
                funDecl.async = true;
            }

            return funDecl;
        },

        createFunctionExpression: function (id, params, defaults, body, rest, generator, expression,
                                            isAsync, returnType, parametricType) {
            var funExpr = {
                type: Syntax.FunctionExpression,
                id: id,
                params: params,
                defaults: defaults,
                body: body,
                rest: rest,
                generator: generator,
                expression: expression,
                returnType: returnType,
                parametricType: parametricType
            };

            if (isAsync) {
                funExpr.async = true;
            }

            return funExpr;
        },

        createIdentifier: function (name) {
            return {
                type: Syntax.Identifier,
                name: name,
                // Only here to initialize the shape of the object to ensure
                // that the 'typeAnnotation' key is ordered before others that
                // are added later (like 'loc' and 'range'). This just helps
                // keep the shape of Identifier nodes consistent with everything
                // else.
                typeAnnotation: undefined
            };
        },

        createTypeAnnotation: function (typeIdentifier, parametricType, params, returnType, nullable) {
            return {
                type: Syntax.TypeAnnotation,
                id: typeIdentifier,
                parametricType: parametricType,
                params: params,
                returnType: returnType,
                nullable: nullable
            };
        },

        createParametricTypeAnnotation: function (parametricTypes) {
            return {
                type: Syntax.ParametricTypeAnnotation,
                params: parametricTypes
            };
        },

        createVoidTypeAnnotation: function () {
            return {
                type: Syntax.VoidTypeAnnotation
            };
        },

        createObjectTypeAnnotation: function (properties, nullable) {
            return {
                type: Syntax.ObjectTypeAnnotation,
                properties: properties,
                nullable: nullable
            };
        },

        createUnionTypeAnnotation: function (types) {
            return {
                type: Syntax.UnionTypeAnnotation,
                types: types
            };
        },

        createTypeAnnotatedIdentifier: function (identifier, annotation, isOptionalParam) {
            return {
                type: Syntax.TypeAnnotatedIdentifier,
                id: identifier,
                annotation: annotation
            };
        },

        createOptionalParameter: function (identifier) {
            return {
                type: Syntax.OptionalParameter,
                id: identifier
            };
        },

        createXJSAttribute: function (name, value) {
            return {
                type: Syntax.XJSAttribute,
                name: name,
                value: value || null
            };
        },

        createXJSSpreadAttribute: function (argument) {
            return {
                type: Syntax.XJSSpreadAttribute,
                argument: argument
            };
        },

        createXJSIdentifier: function (name) {
            return {
                type: Syntax.XJSIdentifier,
                name: name
            };
        },

        createXJSNamespacedName: function (namespace, name) {
            return {
                type: Syntax.XJSNamespacedName,
                namespace: namespace,
                name: name
            };
        },

        createXJSMemberExpression: function (object, property) {
            return {
                type: Syntax.XJSMemberExpression,
                object: object,
                property: property
            };
        },

        createXJSElement: function (openingElement, closingElement, children) {
            return {
                type: Syntax.XJSElement,
                openingElement: openingElement,
                closingElement: closingElement,
                children: children
            };
        },

        createXJSEmptyExpression: function () {
            return {
                type: Syntax.XJSEmptyExpression
            };
        },

        createXJSExpressionContainer: function (expression) {
            return {
                type: Syntax.XJSExpressionContainer,
                expression: expression
            };
        },

        createXJSOpeningElement: function (name, attributes, selfClosing) {
            return {
                type: Syntax.XJSOpeningElement,
                name: name,
                selfClosing: selfClosing,
                attributes: attributes
            };
        },

        createXJSClosingElement: function (name) {
            return {
                type: Syntax.XJSClosingElement,
                name: name
            };
        },

        createIfStatement: function (test, consequent, alternate) {
            return {
                type: Syntax.IfStatement,
                test: test,
                consequent: consequent,
                alternate: alternate
            };
        },

        createLabeledStatement: function (label, body) {
            return {
                type: Syntax.LabeledStatement,
                label: label,
                body: body
            };
        },

        createLiteral: function (token) {
            var object = {
                type: Syntax.Literal,
                value: token.value,
                raw: source.slice(token.range[0], token.range[1])
            };
            if (token.regex) {
                object.regex = token.regex;
            }
            return object;
        },

        createMemberExpression: function (accessor, object, property) {
            return {
                type: Syntax.MemberExpression,
                computed: accessor === '[',
                object: object,
                property: property
            };
        },

        createNewExpression: function (callee, args) {
            return {
                type: Syntax.NewExpression,
                callee: callee,
                'arguments': args
            };
        },

        createObjectExpression: function (properties) {
            return {
                type: Syntax.ObjectExpression,
                properties: properties
            };
        },

        createPostfixExpression: function (operator, argument) {
            return {
                type: Syntax.UpdateExpression,
                operator: operator,
                argument: argument,
                prefix: false
            };
        },

        createProgram: function (body) {
            return {
                type: Syntax.Program,
                body: body
            };
        },

        createProperty: function (kind, key, value, method, shorthand, computed) {
            return {
                type: Syntax.Property,
                key: key,
                value: value,
                kind: kind,
                method: method,
                shorthand: shorthand,
                computed: computed
            };
        },

        createReturnStatement: function (argument) {
            return {
                type: Syntax.ReturnStatement,
                argument: argument
            };
        },

        createSequenceExpression: function (expressions) {
            return {
                type: Syntax.SequenceExpression,
                expressions: expressions
            };
        },

        createSwitchCase: function (test, consequent) {
            return {
                type: Syntax.SwitchCase,
                test: test,
                consequent: consequent
            };
        },

        createSwitchStatement: function (discriminant, cases) {
            return {
                type: Syntax.SwitchStatement,
                discriminant: discriminant,
                cases: cases
            };
        },

        createThisExpression: function () {
            return {
                type: Syntax.ThisExpression
            };
        },

        createThrowStatement: function (argument) {
            return {
                type: Syntax.ThrowStatement,
                argument: argument
            };
        },

        createTryStatement: function (block, guardedHandlers, handlers, finalizer) {
            return {
                type: Syntax.TryStatement,
                block: block,
                guardedHandlers: guardedHandlers,
                handlers: handlers,
                finalizer: finalizer
            };
        },

        createUnaryExpression: function (operator, argument) {
            if (operator === '++' || operator === '--') {
                return {
                    type: Syntax.UpdateExpression,
                    operator: operator,
                    argument: argument,
                    prefix: true
                };
            }
            return {
                type: Syntax.UnaryExpression,
                operator: operator,
                argument: argument,
                prefix: true
            };
        },

        createVariableDeclaration: function (declarations, kind) {
            return {
                type: Syntax.VariableDeclaration,
                declarations: declarations,
                kind: kind
            };
        },

        createVariableDeclarator: function (id, init) {
            return {
                type: Syntax.VariableDeclarator,
                id: id,
                init: init
            };
        },

        createWhileStatement: function (test, body) {
            return {
                type: Syntax.WhileStatement,
                test: test,
                body: body
            };
        },

        createWithStatement: function (object, body) {
            return {
                type: Syntax.WithStatement,
                object: object,
                body: body
            };
        },

        createTemplateElement: function (value, tail) {
            return {
                type: Syntax.TemplateElement,
                value: value,
                tail: tail
            };
        },

        createTemplateLiteral: function (quasis, expressions) {
            return {
                type: Syntax.TemplateLiteral,
                quasis: quasis,
                expressions: expressions
            };
        },

        createSpreadElement: function (argument) {
            return {
                type: Syntax.SpreadElement,
                argument: argument
            };
        },

        createSpreadProperty: function (argument) {
            return {
                type: Syntax.SpreadProperty,
                argument: argument
            };
        },

        createTaggedTemplateExpression: function (tag, quasi) {
            return {
                type: Syntax.TaggedTemplateExpression,
                tag: tag,
                quasi: quasi
            };
        },

        createArrowFunctionExpression: function (params, defaults, body, rest, expression, isAsync) {
            var arrowExpr = {
                type: Syntax.ArrowFunctionExpression,
                id: null,
                params: params,
                defaults: defaults,
                body: body,
                rest: rest,
                generator: false,
                expression: expression
            };

            if (isAsync) {
                arrowExpr.async = true;
            }

            return arrowExpr;
        },

        createMethodDefinition: function (propertyType, kind, key, value) {
            return {
                type: Syntax.MethodDefinition,
                key: key,
                value: value,
                kind: kind,
                'static': propertyType === ClassPropertyType.static
            };
        },

        createClassProperty: function (propertyIdentifier) {
            return {
                type: Syntax.ClassProperty,
                id: propertyIdentifier
            };
        },

        createClassBody: function (body) {
            return {
                type: Syntax.ClassBody,
                body: body
            };
        },

        createClassExpression: function (id, superClass, body, parametricType) {
            return {
                type: Syntax.ClassExpression,
                id: id,
                superClass: superClass,
                body: body,
                parametricType: parametricType
            };
        },

        createClassDeclaration: function (id, superClass, body, parametricType, superParametricType) {
            return {
                type: Syntax.ClassDeclaration,
                id: id,
                superClass: superClass,
                body: body,
                parametricType: parametricType,
                superParametricType: superParametricType
            };
        },

        createModuleSpecifier: function (token) {
            return {
                type: Syntax.ModuleSpecifier,
                value: token.value,
                raw: source.slice(token.range[0], token.range[1])
            };
        },

        createExportSpecifier: function (id, name) {
            return {
                type: Syntax.ExportSpecifier,
                id: id,
                name: name
            };
        },

        createExportBatchSpecifier: function () {
            return {
                type: Syntax.ExportBatchSpecifier
            };
        },

        createImportDefaultSpecifier: function (id) {
            return {
                type: Syntax.ImportDefaultSpecifier,
                id: id
            };
        },

        createImportNamespaceSpecifier: function (id) {
            return {
                type: Syntax.ImportNamespaceSpecifier,
                id: id
            };
        },

        createExportDeclaration: function (isDefault, declaration, specifiers, source) {
            return {
                type: Syntax.ExportDeclaration,
                'default': !!isDefault,
                declaration: declaration,
                specifiers: specifiers,
                source: source
            };
        },

        createImportSpecifier: function (id, name) {
            return {
                type: Syntax.ImportSpecifier,
                id: id,
                name: name
            };
        },

        createImportDeclaration: function (specifiers, source) {
            return {
                type: Syntax.ImportDeclaration,
                specifiers: specifiers,
                source: source
            };
        },

        createYieldExpression: function (argument, delegate) {
            return {
                type: Syntax.YieldExpression,
                argument: argument,
                delegate: delegate
            };
        },

        createAwaitExpression: function (argument) {
            return {
                type: Syntax.AwaitExpression,
                argument: argument
            };
        },

        createComprehensionExpression: function (filter, blocks, body) {
            return {
                type: Syntax.ComprehensionExpression,
                filter: filter,
                blocks: blocks,
                body: body
            };
        }

    };

    // Return true if there is a line terminator before the next token.

    function peekLineTerminator() {
        var pos, line, start, found;

        pos = index;
        line = lineNumber;
        start = lineStart;
        skipComment();
        found = lineNumber !== line;
        index = pos;
        lineNumber = line;
        lineStart = start;

        return found;
    }

    // Throw an exception

    function throwError(token, messageFormat) {
        var error,
            args = Array.prototype.slice.call(arguments, 2),
            msg = messageFormat.replace(
                /%(\d)/g,
                function (whole, index) {
                    assert(index < args.length, 'Message reference must be in range');
                    return args[index];
                }
            );

        if (typeof token.lineNumber === 'number') {
            error = new Error('Line ' + token.lineNumber + ': ' + msg);
            error.index = token.range[0];
            error.lineNumber = token.lineNumber;
            error.column = token.range[0] - lineStart + 1;
        } else {
            error = new Error('Line ' + lineNumber + ': ' + msg);
            error.index = index;
            error.lineNumber = lineNumber;
            error.column = index - lineStart + 1;
        }

        error.description = msg;
        throw error;
    }

    function throwErrorTolerant() {
        try {
            throwError.apply(null, arguments);
        } catch (e) {
            if (extra.errors) {
                extra.errors.push(e);
            } else {
                throw e;
            }
        }
    }


    // Throw an exception because of the token.

    function throwUnexpected(token) {
        if (token.type === Token.EOF) {
            throwError(token, Messages.UnexpectedEOS);
        }

        if (token.type === Token.NumericLiteral) {
            throwError(token, Messages.UnexpectedNumber);
        }

        if (token.type === Token.StringLiteral || token.type === Token.XJSText) {
            throwError(token, Messages.UnexpectedString);
        }

        if (token.type === Token.Identifier) {
            throwError(token, Messages.UnexpectedIdentifier);
        }

        if (token.type === Token.Keyword) {
            if (isFutureReservedWord(token.value)) {
                throwError(token, Messages.UnexpectedReserved);
            } else if (strict && isStrictModeReservedWord(token.value)) {
                throwErrorTolerant(token, Messages.StrictReservedWord);
                return;
            }
            throwError(token, Messages.UnexpectedToken, token.value);
        }

        if (token.type === Token.Template) {
            throwError(token, Messages.UnexpectedTemplate, token.value.raw);
        }

        // BooleanLiteral, NullLiteral, or Punctuator.
        throwError(token, Messages.UnexpectedToken, token.value);
    }

    // Expect the next token to match the specified punctuator.
    // If not, an exception will be thrown.

    function expect(value) {
        var token = lex();
        if (token.type !== Token.Punctuator || token.value !== value) {
            throwUnexpected(token);
        }
    }

    // Expect the next token to match the specified keyword.
    // If not, an exception will be thrown.

    function expectKeyword(keyword, contextual) {
        var token = lex();
        if (token.type !== (contextual ? Token.Identifier : Token.Keyword) ||
                token.value !== keyword) {
            throwUnexpected(token);
        }
    }

    // Expect the next token to match the specified contextual keyword.
    // If not, an exception will be thrown.

    function expectContextualKeyword(keyword) {
        return expectKeyword(keyword, true);
    }

    // Return true if the next token matches the specified punctuator.

    function match(value) {
        return lookahead.type === Token.Punctuator && lookahead.value === value;
    }

    // Return true if the next token matches the specified keyword

    function matchKeyword(keyword, contextual) {
        var expectedType = contextual ? Token.Identifier : Token.Keyword;
        return lookahead.type === expectedType && lookahead.value === keyword;
    }

    // Return true if the next token matches the specified contextual keyword

    function matchContextualKeyword(keyword) {
        return matchKeyword(keyword, true);
    }

    // Return true if the next token is an assignment operator

    function matchAssign() {
        var op;

        if (lookahead.type !== Token.Punctuator) {
            return false;
        }
        op = lookahead.value;
        return op === '=' ||
            op === '*=' ||
            op === '/=' ||
            op === '%=' ||
            op === '+=' ||
            op === '-=' ||
            op === '<<=' ||
            op === '>>=' ||
            op === '>>>=' ||
            op === '&=' ||
            op === '^=' ||
            op === '|=';
    }

    // Note that 'yield' is treated as a keyword in strict mode, but a
    // contextual keyword (identifier) in non-strict mode, so we need to
    // use matchKeyword('yield', false) and matchKeyword('yield', true)
    // (i.e. matchContextualKeyword) appropriately.
    function matchYield() {
        return state.yieldAllowed && matchKeyword('yield', !strict);
    }

    function matchAsync() {
        var backtrackToken = lookahead, matches = false;

        if (matchContextualKeyword('async')) {
            lex(); // Make sure peekLineTerminator() starts after 'async'.
            matches = !peekLineTerminator();
            rewind(backtrackToken); // Revert the lex().
        }

        return matches;
    }

    function matchAwait() {
        return state.awaitAllowed && matchContextualKeyword('await');
    }

    function consumeSemicolon() {
        var line, oldIndex = index, oldLineNumber = lineNumber,
            oldLineStart = lineStart, oldLookahead = lookahead;

        // Catch the very common case first: immediately a semicolon (char #59).
        if (source.charCodeAt(index) === 59) {
            lex();
            return;
        }

        line = lineNumber;
        skipComment();
        if (lineNumber !== line) {
            index = oldIndex;
            lineNumber = oldLineNumber;
            lineStart = oldLineStart;
            lookahead = oldLookahead;
            return;
        }

        if (match(';')) {
            lex();
            return;
        }

        if (lookahead.type !== Token.EOF && !match('}')) {
            throwUnexpected(lookahead);
        }
    }

    // Return true if provided expression is LeftHandSideExpression

    function isLeftHandSide(expr) {
        return expr.type === Syntax.Identifier || expr.type === Syntax.MemberExpression;
    }

    function isAssignableLeftHandSide(expr) {
        return isLeftHandSide(expr) || expr.type === Syntax.ObjectPattern || expr.type === Syntax.ArrayPattern;
    }

    // 11.1.4 Array Initialiser

    function parseArrayInitialiser() {
        var elements = [], blocks = [], filter = null, tmp, possiblecomprehension = true, body,
            marker = markerCreate();

        expect('[');
        while (!match(']')) {
            if (lookahead.value === 'for' &&
                    lookahead.type === Token.Keyword) {
                if (!possiblecomprehension) {
                    throwError({}, Messages.ComprehensionError);
                }
                matchKeyword('for');
                tmp = parseForStatement({ignoreBody: true});
                tmp.of = tmp.type === Syntax.ForOfStatement;
                tmp.type = Syntax.ComprehensionBlock;
                if (tmp.left.kind) { // can't be let or const
                    throwError({}, Messages.ComprehensionError);
                }
                blocks.push(tmp);
            } else if (lookahead.value === 'if' &&
                           lookahead.type === Token.Keyword) {
                if (!possiblecomprehension) {
                    throwError({}, Messages.ComprehensionError);
                }
                expectKeyword('if');
                expect('(');
                filter = parseExpression();
                expect(')');
            } else if (lookahead.value === ',' &&
                           lookahead.type === Token.Punctuator) {
                possiblecomprehension = false; // no longer allowed.
                lex();
                elements.push(null);
            } else {
                tmp = parseSpreadOrAssignmentExpression();
                elements.push(tmp);
                if (tmp && tmp.type === Syntax.SpreadElement) {
                    if (!match(']')) {
                        throwError({}, Messages.ElementAfterSpreadElement);
                    }
                } else if (!(match(']') || matchKeyword('for') || matchKeyword('if'))) {
                    expect(','); // this lexes.
                    possiblecomprehension = false;
                }
            }
        }

        expect(']');

        if (filter && !blocks.length) {
            throwError({}, Messages.ComprehensionRequiresBlock);
        }

        if (blocks.length) {
            if (elements.length !== 1) {
                throwError({}, Messages.ComprehensionError);
            }
            return markerApply(marker, delegate.createComprehensionExpression(filter, blocks, elements[0]));
        }
        return markerApply(marker, delegate.createArrayExpression(elements));
    }

    // 11.1.5 Object Initialiser

    function parsePropertyFunction(options) {
        var previousStrict, previousYieldAllowed, previousAwaitAllowed,
            params, defaults, body, marker = markerCreate();

        previousStrict = strict;
        previousYieldAllowed = state.yieldAllowed;
        state.yieldAllowed = options.generator;
        previousAwaitAllowed = state.awaitAllowed;
        state.awaitAllowed = options.async;
        params = options.params || [];
        defaults = options.defaults || [];

        body = parseConciseBody();
        if (options.name && strict && isRestrictedWord(params[0].name)) {
            throwErrorTolerant(options.name, Messages.StrictParamName);
        }
        strict = previousStrict;
        state.yieldAllowed = previousYieldAllowed;
        state.awaitAllowed = previousAwaitAllowed;

        return markerApply(marker, delegate.createFunctionExpression(
            null,
            params,
            defaults,
            body,
            options.rest || null,
            options.generator,
            body.type !== Syntax.BlockStatement,
            options.async,
            options.returnType,
            options.parametricType
        ));
    }


    function parsePropertyMethodFunction(options) {
        var previousStrict, tmp, method;

        previousStrict = strict;
        strict = true;

        tmp = parseParams();

        if (tmp.stricted) {
            throwErrorTolerant(tmp.stricted, tmp.message);
        }

        method = parsePropertyFunction({
            params: tmp.params,
            defaults: tmp.defaults,
            rest: tmp.rest,
            generator: options.generator,
            async: options.async,
            returnType: tmp.returnType,
            parametricType: options.parametricType
        });

        strict = previousStrict;

        return method;
    }


    function parseObjectPropertyKey() {
        var marker = markerCreate(),
            token = lex(),
            propertyKey,
            result;

        // Note: This function is called only from parseObjectProperty(), where
        // EOF and Punctuator tokens are already filtered out.

        if (token.type === Token.StringLiteral || token.type === Token.NumericLiteral) {
            if (strict && token.octal) {
                throwErrorTolerant(token, Messages.StrictOctalLiteral);
            }
            return markerApply(marker, delegate.createLiteral(token));
        }

        if (token.type === Token.Punctuator && token.value === '[') {
            // For computed properties we should skip the [ and ], and
            // capture in marker only the assignment expression itself.
            marker = markerCreate();
            propertyKey = parseAssignmentExpression();
            result = markerApply(marker, propertyKey);
            expect(']');
            return result;
        }

        return markerApply(marker, delegate.createIdentifier(token.value));
    }

    function parseObjectProperty() {
        var token, key, id, value, param, expr, computed,
            marker = markerCreate();

        token = lookahead;
        computed = (token.value === '[');

        if (token.type === Token.Identifier || computed || matchAsync()) {
            id = parseObjectPropertyKey();

            if (match(':')) {
                lex();

                return markerApply(
                    marker,
                    delegate.createProperty(
                        'init',
                        id,
                        parseAssignmentExpression(),
                        false,
                        false,
                        computed
                    )
                );
            }

            if (match('(')) {
                return markerApply(
                    marker,
                    delegate.createProperty(
                        'init',
                        id,
                        parsePropertyMethodFunction({
                            generator: false,
                            async: false
                        }),
                        true,
                        false,
                        computed
                    )
                );
            }

            // Property Assignment: Getter and Setter.

            if (token.value === 'get') {
                computed = (lookahead.value === '[');
                key = parseObjectPropertyKey();

                expect('(');
                expect(')');

                return markerApply(
                    marker,
                    delegate.createProperty(
                        'get',
                        key,
                        parsePropertyFunction({
                            generator: false,
                            async: false
                        }),
                        false,
                        false,
                        computed
                    )
                );
            }

            if (token.value === 'set') {
                computed = (lookahead.value === '[');
                key = parseObjectPropertyKey();

                expect('(');
                token = lookahead;
                param = [ parseTypeAnnotatableIdentifier() ];
                expect(')');

                return markerApply(
                    marker,
                    delegate.createProperty(
                        'set',
                        key,
                        parsePropertyFunction({
                            params: param,
                            generator: false,
                            async: false,
                            name: token
                        }),
                        false,
                        false,
                        computed
                    )
                );
            }

            if (token.value === 'async') {
                computed = (lookahead.value === '[');
                key = parseObjectPropertyKey();

                return markerApply(
                    marker,
                    delegate.createProperty(
                        'init',
                        key,
                        parsePropertyMethodFunction({
                            generator: false,
                            async: true
                        }),
                        true,
                        false,
                        computed
                    )
                );
            }

            if (computed) {
                // Computed properties can only be used with full notation.
                throwUnexpected(lookahead);
            }

            return markerApply(
                marker,
                delegate.createProperty('init', id, id, false, true, false)
            );
        }

        if (token.type === Token.EOF || token.type === Token.Punctuator) {
            if (!match('*')) {
                throwUnexpected(token);
            }
            lex();

            computed = (lookahead.type === Token.Punctuator && lookahead.value === '[');

            id = parseObjectPropertyKey();

            if (!match('(')) {
                throwUnexpected(lex());
            }

            return markerApply(marker, delegate.createProperty('init', id, parsePropertyMethodFunction({ generator: true }), true, false, computed));
        }
        key = parseObjectPropertyKey();
        if (match(':')) {
            lex();
            return markerApply(marker, delegate.createProperty('init', key, parseAssignmentExpression(), false, false, false));
        }
        if (match('(')) {
            return markerApply(marker, delegate.createProperty('init', key, parsePropertyMethodFunction({ generator: false }), true, false, false));
        }
        throwUnexpected(lex());
    }

    function parseObjectSpreadProperty() {
        var marker = markerCreate();
        expect('...');
        return markerApply(marker, delegate.createSpreadProperty(parseAssignmentExpression()));
    }

    function parseObjectInitialiser() {
        var properties = [], property, name, key, kind, map = {}, toString = String,
            marker = markerCreate();

        expect('{');

        while (!match('}')) {
            if (match('...')) {
                property = parseObjectSpreadProperty();
            } else {
                property = parseObjectProperty();

                if (property.key.type === Syntax.Identifier) {
                    name = property.key.name;
                } else {
                    name = toString(property.key.value);
                }
                kind = (property.kind === 'init') ? PropertyKind.Data : (property.kind === 'get') ? PropertyKind.Get : PropertyKind.Set;

                key = '$' + name;
                if (Object.prototype.hasOwnProperty.call(map, key)) {
                    if (map[key] === PropertyKind.Data) {
                        if (strict && kind === PropertyKind.Data) {
                            throwErrorTolerant({}, Messages.StrictDuplicateProperty);
                        } else if (kind !== PropertyKind.Data) {
                            throwErrorTolerant({}, Messages.AccessorDataProperty);
                        }
                    } else {
                        if (kind === PropertyKind.Data) {
                            throwErrorTolerant({}, Messages.AccessorDataProperty);
                        } else if (map[key] & kind) {
                            throwErrorTolerant({}, Messages.AccessorGetSet);
                        }
                    }
                    map[key] |= kind;
                } else {
                    map[key] = kind;
                }
            }

            properties.push(property);

            if (!match('}')) {
                expect(',');
            }
        }

        expect('}');

        return markerApply(marker, delegate.createObjectExpression(properties));
    }

    function parseTemplateElement(option) {
        var marker = markerCreate(),
            token = scanTemplateElement(option);
        if (strict && token.octal) {
            throwError(token, Messages.StrictOctalLiteral);
        }
        return markerApply(marker, delegate.createTemplateElement({ raw: token.value.raw, cooked: token.value.cooked }, token.tail));
    }

    function parseTemplateLiteral() {
        var quasi, quasis, expressions, marker = markerCreate();

        quasi = parseTemplateElement({ head: true });
        quasis = [ quasi ];
        expressions = [];

        while (!quasi.tail) {
            expressions.push(parseExpression());
            quasi = parseTemplateElement({ head: false });
            quasis.push(quasi);
        }

        return markerApply(marker, delegate.createTemplateLiteral(quasis, expressions));
    }

    // 11.1.6 The Grouping Operator

    function parseGroupExpression() {
        var expr;

        expect('(');

        ++state.parenthesizedCount;

        expr = parseExpression();

        expect(')');

        return expr;
    }

    function matchAsyncFuncExprOrDecl() {
        var token;

        if (matchAsync()) {
            token = lookahead2();
            if (token.type === Token.Keyword && token.value === 'function') {
                return true;
            }
        }

        return false;
    }

    // 11.1 Primary Expressions

    function parsePrimaryExpression() {
        var marker, type, token, expr;

        type = lookahead.type;

        if (type === Token.Identifier) {
            marker = markerCreate();
            return markerApply(marker, delegate.createIdentifier(lex().value));
        }

        if (type === Token.StringLiteral || type === Token.NumericLiteral) {
            if (strict && lookahead.octal) {
                throwErrorTolerant(lookahead, Messages.StrictOctalLiteral);
            }
            marker = markerCreate();
            return markerApply(marker, delegate.createLiteral(lex()));
        }

        if (type === Token.Keyword) {
            if (matchKeyword('this')) {
                marker = markerCreate();
                lex();
                return markerApply(marker, delegate.createThisExpression());
            }

            if (matchKeyword('function')) {
                return parseFunctionExpression();
            }

            if (matchKeyword('class')) {
                return parseClassExpression();
            }

            if (matchKeyword('super')) {
                marker = markerCreate();
                lex();
                return markerApply(marker, delegate.createIdentifier('super'));
            }
        }

        if (type === Token.BooleanLiteral) {
            marker = markerCreate();
            token = lex();
            token.value = (token.value === 'true');
            return markerApply(marker, delegate.createLiteral(token));
        }

        if (type === Token.NullLiteral) {
            marker = markerCreate();
            token = lex();
            token.value = null;
            return markerApply(marker, delegate.createLiteral(token));
        }

        if (match('[')) {
            return parseArrayInitialiser();
        }

        if (match('{')) {
            return parseObjectInitialiser();
        }

        if (match('(')) {
            return parseGroupExpression();
        }

        if (match('/') || match('/=')) {
            marker = markerCreate();
            return markerApply(marker, delegate.createLiteral(scanRegExp()));
        }

        if (type === Token.Template) {
            return parseTemplateLiteral();
        }

        if (match('<')) {
            return parseXJSElement();
        }

        throwUnexpected(lex());
    }

    // 11.2 Left-Hand-Side Expressions

    function parseArguments() {
        var args = [], arg;

        expect('(');

        if (!match(')')) {
            while (index < length) {
                arg = parseSpreadOrAssignmentExpression();
                args.push(arg);

                if (match(')')) {
                    break;
                } else if (arg.type === Syntax.SpreadElement) {
                    throwError({}, Messages.ElementAfterSpreadElement);
                }

                expect(',');
            }
        }

        expect(')');

        return args;
    }

    function parseSpreadOrAssignmentExpression() {
        if (match('...')) {
            var marker = markerCreate();
            lex();
            return markerApply(marker, delegate.createSpreadElement(parseAssignmentExpression()));
        }
        return parseAssignmentExpression();
    }

    function parseNonComputedProperty() {
        var marker = markerCreate(),
            token = lex();

        if (!isIdentifierName(token)) {
            throwUnexpected(token);
        }

        return markerApply(marker, delegate.createIdentifier(token.value));
    }

    function parseNonComputedMember() {
        expect('.');

        return parseNonComputedProperty();
    }

    function parseComputedMember() {
        var expr;

        expect('[');

        expr = parseExpression();

        expect(']');

        return expr;
    }

    function parseNewExpression() {
        var callee, args, marker = markerCreate();

        expectKeyword('new');
        callee = parseLeftHandSideExpression();
        args = match('(') ? parseArguments() : [];

        return markerApply(marker, delegate.createNewExpression(callee, args));
    }

    function parseLeftHandSideExpressionAllowCall() {
        var expr, args, marker = markerCreate();

        expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();

        while (match('.') || match('[') || match('(') || lookahead.type === Token.Template) {
            if (match('(')) {
                args = parseArguments();
                expr = markerApply(marker, delegate.createCallExpression(expr, args));
            } else if (match('[')) {
                expr = markerApply(marker, delegate.createMemberExpression('[', expr, parseComputedMember()));
            } else if (match('.')) {
                expr = markerApply(marker, delegate.createMemberExpression('.', expr, parseNonComputedMember()));
            } else {
                expr = markerApply(marker, delegate.createTaggedTemplateExpression(expr, parseTemplateLiteral()));
            }
        }

        return expr;
    }

    function parseLeftHandSideExpression() {
        var expr, marker = markerCreate();

        expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();

        while (match('.') || match('[') || lookahead.type === Token.Template) {
            if (match('[')) {
                expr = markerApply(marker, delegate.createMemberExpression('[', expr, parseComputedMember()));
            } else if (match('.')) {
                expr = markerApply(marker, delegate.createMemberExpression('.', expr, parseNonComputedMember()));
            } else {
                expr = markerApply(marker, delegate.createTaggedTemplateExpression(expr, parseTemplateLiteral()));
            }
        }

        return expr;
    }

    // 11.3 Postfix Expressions

    function parsePostfixExpression() {
        var marker = markerCreate(),
            expr = parseLeftHandSideExpressionAllowCall(),
            token;

        if (lookahead.type !== Token.Punctuator) {
            return expr;
        }

        if ((match('++') || match('--')) && !peekLineTerminator()) {
            // 11.3.1, 11.3.2
            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
                throwErrorTolerant({}, Messages.StrictLHSPostfix);
            }

            if (!isLeftHandSide(expr)) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }

            token = lex();
            expr = markerApply(marker, delegate.createPostfixExpression(token.value, expr));
        }

        return expr;
    }

    // 11.4 Unary Operators

    function parseUnaryExpression() {
        var marker, token, expr;

        if (lookahead.type !== Token.Punctuator && lookahead.type !== Token.Keyword) {
            return parsePostfixExpression();
        }

        if (match('++') || match('--')) {
            marker = markerCreate();
            token = lex();
            expr = parseUnaryExpression();
            // 11.4.4, 11.4.5
            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
                throwErrorTolerant({}, Messages.StrictLHSPrefix);
            }

            if (!isLeftHandSide(expr)) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }

            return markerApply(marker, delegate.createUnaryExpression(token.value, expr));
        }

        if (match('+') || match('-') || match('~') || match('!')) {
            marker = markerCreate();
            token = lex();
            expr = parseUnaryExpression();
            return markerApply(marker, delegate.createUnaryExpression(token.value, expr));
        }

        if (matchKeyword('delete') || matchKeyword('void') || matchKeyword('typeof')) {
            marker = markerCreate();
            token = lex();
            expr = parseUnaryExpression();
            expr = markerApply(marker, delegate.createUnaryExpression(token.value, expr));
            if (strict && expr.operator === 'delete' && expr.argument.type === Syntax.Identifier) {
                throwErrorTolerant({}, Messages.StrictDelete);
            }
            return expr;
        }

        return parsePostfixExpression();
    }

    function binaryPrecedence(token, allowIn) {
        var prec = 0;

        if (token.type !== Token.Punctuator && token.type !== Token.Keyword) {
            return 0;
        }

        switch (token.value) {
        case '||':
            prec = 1;
            break;

        case '&&':
            prec = 2;
            break;

        case '|':
            prec = 3;
            break;

        case '^':
            prec = 4;
            break;

        case '&':
            prec = 5;
            break;

        case '==':
        case '!=':
        case '===':
        case '!==':
            prec = 6;
            break;

        case '<':
        case '>':
        case '<=':
        case '>=':
        case 'instanceof':
            prec = 7;
            break;

        case 'in':
            prec = allowIn ? 7 : 0;
            break;

        case '<<':
        case '>>':
        case '>>>':
            prec = 8;
            break;

        case '+':
        case '-':
            prec = 9;
            break;

        case '*':
        case '/':
        case '%':
            prec = 11;
            break;

        default:
            break;
        }

        return prec;
    }

    // 11.5 Multiplicative Operators
    // 11.6 Additive Operators
    // 11.7 Bitwise Shift Operators
    // 11.8 Relational Operators
    // 11.9 Equality Operators
    // 11.10 Binary Bitwise Operators
    // 11.11 Binary Logical Operators

    function parseBinaryExpression() {
        var expr, token, prec, previousAllowIn, stack, right, operator, left, i,
            marker, markers;

        previousAllowIn = state.allowIn;
        state.allowIn = true;

        marker = markerCreate();
        left = parseUnaryExpression();

        token = lookahead;
        prec = binaryPrecedence(token, previousAllowIn);
        if (prec === 0) {
            return left;
        }
        token.prec = prec;
        lex();

        markers = [marker, markerCreate()];
        right = parseUnaryExpression();

        stack = [left, token, right];

        while ((prec = binaryPrecedence(lookahead, previousAllowIn)) > 0) {

            // Reduce: make a binary expression from the three topmost entries.
            while ((stack.length > 2) && (prec <= stack[stack.length - 2].prec)) {
                right = stack.pop();
                operator = stack.pop().value;
                left = stack.pop();
                expr = delegate.createBinaryExpression(operator, left, right);
                markers.pop();
                marker = markers.pop();
                markerApply(marker, expr);
                stack.push(expr);
                markers.push(marker);
            }

            // Shift.
            token = lex();
            token.prec = prec;
            stack.push(token);
            markers.push(markerCreate());
            expr = parseUnaryExpression();
            stack.push(expr);
        }

        state.allowIn = previousAllowIn;

        // Final reduce to clean-up the stack.
        i = stack.length - 1;
        expr = stack[i];
        markers.pop();
        while (i > 1) {
            expr = delegate.createBinaryExpression(stack[i - 1].value, stack[i - 2], expr);
            i -= 2;
            marker = markers.pop();
            markerApply(marker, expr);
        }

        return expr;
    }


    // 11.12 Conditional Operator

    function parseConditionalExpression() {
        var expr, previousAllowIn, consequent, alternate, marker = markerCreate();
        expr = parseBinaryExpression();

        if (match('?')) {
            lex();
            previousAllowIn = state.allowIn;
            state.allowIn = true;
            consequent = parseAssignmentExpression();
            state.allowIn = previousAllowIn;
            expect(':');
            alternate = parseAssignmentExpression();

            expr = markerApply(marker, delegate.createConditionalExpression(expr, consequent, alternate));
        }

        return expr;
    }

    // 11.13 Assignment Operators

    function reinterpretAsAssignmentBindingPattern(expr) {
        var i, len, property, element;

        if (expr.type === Syntax.ObjectExpression) {
            expr.type = Syntax.ObjectPattern;
            for (i = 0, len = expr.properties.length; i < len; i += 1) {
                property = expr.properties[i];
                if (property.type === Syntax.SpreadProperty) {
                    if (i < len - 1) {
                        throwError({}, Messages.PropertyAfterSpreadProperty);
                    }
                    reinterpretAsAssignmentBindingPattern(property.argument);
                } else {
                    if (property.kind !== 'init') {
                        throwError({}, Messages.InvalidLHSInAssignment);
                    }
                    reinterpretAsAssignmentBindingPattern(property.value);
                }
            }
        } else if (expr.type === Syntax.ArrayExpression) {
            expr.type = Syntax.ArrayPattern;
            for (i = 0, len = expr.elements.length; i < len; i += 1) {
                element = expr.elements[i];
                if (element) {
                    reinterpretAsAssignmentBindingPattern(element);
                }
            }
        } else if (expr.type === Syntax.Identifier) {
            if (isRestrictedWord(expr.name)) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }
        } else if (expr.type === Syntax.SpreadElement) {
            reinterpretAsAssignmentBindingPattern(expr.argument);
            if (expr.argument.type === Syntax.ObjectPattern) {
                throwError({}, Messages.ObjectPatternAsSpread);
            }
        } else {
            if (expr.type !== Syntax.MemberExpression && expr.type !== Syntax.CallExpression && expr.type !== Syntax.NewExpression) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }
        }
    }


    function reinterpretAsDestructuredParameter(options, expr) {
        var i, len, property, element;

        if (expr.type === Syntax.ObjectExpression) {
            expr.type = Syntax.ObjectPattern;
            for (i = 0, len = expr.properties.length; i < len; i += 1) {
                property = expr.properties[i];
                if (property.type === Syntax.SpreadProperty) {
                    if (i < len - 1) {
                        throwError({}, Messages.PropertyAfterSpreadProperty);
                    }
                    reinterpretAsDestructuredParameter(options, property.argument);
                } else {
                    if (property.kind !== 'init') {
                        throwError({}, Messages.InvalidLHSInFormalsList);
                    }
                    reinterpretAsDestructuredParameter(options, property.value);
                }
            }
        } else if (expr.type === Syntax.ArrayExpression) {
            expr.type = Syntax.ArrayPattern;
            for (i = 0, len = expr.elements.length; i < len; i += 1) {
                element = expr.elements[i];
                if (element) {
                    reinterpretAsDestructuredParameter(options, element);
                }
            }
        } else if (expr.type === Syntax.Identifier) {
            validateParam(options, expr, expr.name);
        } else {
            if (expr.type !== Syntax.MemberExpression) {
                throwError({}, Messages.InvalidLHSInFormalsList);
            }
        }
    }

    function reinterpretAsCoverFormalsList(expressions) {
        var i, len, param, params, defaults, defaultCount, options, rest;

        params = [];
        defaults = [];
        defaultCount = 0;
        rest = null;
        options = {
            paramSet: {}
        };

        for (i = 0, len = expressions.length; i < len; i += 1) {
            param = expressions[i];
            if (param.type === Syntax.Identifier) {
                params.push(param);
                defaults.push(null);
                validateParam(options, param, param.name);
            } else if (param.type === Syntax.ObjectExpression || param.type === Syntax.ArrayExpression) {
                reinterpretAsDestructuredParameter(options, param);
                params.push(param);
                defaults.push(null);
            } else if (param.type === Syntax.SpreadElement) {
                assert(i === len - 1, 'It is guaranteed that SpreadElement is last element by parseExpression');
                reinterpretAsDestructuredParameter(options, param.argument);
                rest = param.argument;
            } else if (param.type === Syntax.AssignmentExpression) {
                params.push(param.left);
                defaults.push(param.right);
                ++defaultCount;
                validateParam(options, param.left, param.left.name);
            } else {
                return null;
            }
        }

        if (options.message === Messages.StrictParamDupe) {
            throwError(
                strict ? options.stricted : options.firstRestricted,
                options.message
            );
        }

        if (defaultCount === 0) {
            defaults = [];
        }

        return {
            params: params,
            defaults: defaults,
            rest: rest,
            stricted: options.stricted,
            firstRestricted: options.firstRestricted,
            message: options.message
        };
    }

    function parseArrowFunctionExpression(options, marker) {
        var previousStrict, previousYieldAllowed, previousAwaitAllowed, body;

        expect('=>');

        previousStrict = strict;
        previousYieldAllowed = state.yieldAllowed;
        state.yieldAllowed = false;
        previousAwaitAllowed = state.awaitAllowed;
        state.awaitAllowed = !!options.async;
        body = parseConciseBody();

        if (strict && options.firstRestricted) {
            throwError(options.firstRestricted, options.message);
        }
        if (strict && options.stricted) {
            throwErrorTolerant(options.stricted, options.message);
        }

        strict = previousStrict;
        state.yieldAllowed = previousYieldAllowed;
        state.awaitAllowed = previousAwaitAllowed;

        return markerApply(marker, delegate.createArrowFunctionExpression(
            options.params,
            options.defaults,
            body,
            options.rest,
            body.type !== Syntax.BlockStatement,
            !!options.async
        ));
    }

    function parseAssignmentExpression() {
        var marker, expr, token, params, oldParenthesizedCount,
            backtrackToken = lookahead, possiblyAsync = false;

        if (matchYield()) {
            return parseYieldExpression();
        }

        if (matchAwait()) {
            return parseAwaitExpression();
        }

        oldParenthesizedCount = state.parenthesizedCount;

        marker = markerCreate();

        if (matchAsyncFuncExprOrDecl()) {
            return parseFunctionExpression();
        }

        if (matchAsync()) {
            // We can't be completely sure that this 'async' token is
            // actually a contextual keyword modifying a function
            // expression, so we might have to un-lex() it later by
            // calling rewind(backtrackToken).
            possiblyAsync = true;
            lex();
        }

        if (match('(')) {
            token = lookahead2();
            if ((token.type === Token.Punctuator && token.value === ')') || token.value === '...') {
                params = parseParams();
                if (!match('=>')) {
                    throwUnexpected(lex());
                }
                params.async = possiblyAsync;
                return parseArrowFunctionExpression(params, marker);
            }
        }

        token = lookahead;

        // If the 'async' keyword is not followed by a '(' character or an
        // identifier, then it can't be an arrow function modifier, and we
        // should interpret it as a normal identifer.
        if (possiblyAsync && !match('(') && token.type !== Token.Identifier) {
            possiblyAsync = false;
            rewind(backtrackToken);
        }

        expr = parseConditionalExpression();

        if (match('=>') &&
                (state.parenthesizedCount === oldParenthesizedCount ||
                state.parenthesizedCount === (oldParenthesizedCount + 1))) {
            if (expr.type === Syntax.Identifier) {
                params = reinterpretAsCoverFormalsList([ expr ]);
            } else if (expr.type === Syntax.SequenceExpression) {
                params = reinterpretAsCoverFormalsList(expr.expressions);
            }
            if (params) {
                params.async = possiblyAsync;
                return parseArrowFunctionExpression(params, marker);
            }
        }

        // If we haven't returned by now, then the 'async' keyword was not
        // a function modifier, and we should rewind and interpret it as a
        // normal identifier.
        if (possiblyAsync) {
            possiblyAsync = false;
            rewind(backtrackToken);
            expr = parseConditionalExpression();
        }

        if (matchAssign()) {
            // 11.13.1
            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
                throwErrorTolerant(token, Messages.StrictLHSAssignment);
            }

            // ES.next draf 11.13 Runtime Semantics step 1
            if (match('=') && (expr.type === Syntax.ObjectExpression || expr.type === Syntax.ArrayExpression)) {
                reinterpretAsAssignmentBindingPattern(expr);
            } else if (!isLeftHandSide(expr)) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }

            expr = markerApply(marker, delegate.createAssignmentExpression(lex().value, expr, parseAssignmentExpression()));
        }

        return expr;
    }

    // 11.14 Comma Operator

    function parseExpression() {
        var marker, expr, expressions, sequence, coverFormalsList, spreadFound, oldParenthesizedCount;

        oldParenthesizedCount = state.parenthesizedCount;

        marker = markerCreate();
        expr = parseAssignmentExpression();
        expressions = [ expr ];

        if (match(',')) {
            while (index < length) {
                if (!match(',')) {
                    break;
                }

                lex();
                expr = parseSpreadOrAssignmentExpression();
                expressions.push(expr);

                if (expr.type === Syntax.SpreadElement) {
                    spreadFound = true;
                    if (!match(')')) {
                        throwError({}, Messages.ElementAfterSpreadElement);
                    }
                    break;
                }
            }

            sequence = markerApply(marker, delegate.createSequenceExpression(expressions));
        }

        if (match('=>')) {
            // Do not allow nested parentheses on the LHS of the =>.
            if (state.parenthesizedCount === oldParenthesizedCount || state.parenthesizedCount === (oldParenthesizedCount + 1)) {
                expr = expr.type === Syntax.SequenceExpression ? expr.expressions : expressions;
                coverFormalsList = reinterpretAsCoverFormalsList(expr);
                if (coverFormalsList) {
                    return parseArrowFunctionExpression(coverFormalsList, marker);
                }
            }
            throwUnexpected(lex());
        }

        if (spreadFound && lookahead2().value !== '=>') {
            throwError({}, Messages.IllegalSpread);
        }

        return sequence || expr;
    }

    // 12.1 Block

    function parseStatementList() {
        var list = [],
            statement;

        while (index < length) {
            if (match('}')) {
                break;
            }
            statement = parseSourceElement();
            if (typeof statement === 'undefined') {
                break;
            }
            list.push(statement);
        }

        return list;
    }

    function parseBlock() {
        var block, marker = markerCreate();

        expect('{');

        block = parseStatementList();

        expect('}');

        return markerApply(marker, delegate.createBlockStatement(block));
    }

    // 12.2 Variable Statement

    function parseObjectTypeAnnotation(nullable) {
        var isMethod, marker, properties = [], property, propertyKey,
            propertyTypeAnnotation;

        expect('{');

        while (!match('}')) {
            marker = markerCreate();
            propertyKey = parseObjectPropertyKey();
            isMethod = match('(');
            propertyTypeAnnotation = parseTypeAnnotation();
            properties.push(markerApply(marker, delegate.createProperty(
                'init',
                propertyKey,
                propertyTypeAnnotation,
                isMethod,
                false
            )));

            if (!match('}')) {
                if (match(',') || match(';')) {
                    lex();
                } else {
                    throwUnexpected(lookahead);
                }
            }
        }

        expect('}');

        return delegate.createObjectTypeAnnotation(properties, nullable);
    }

    function parseVoidTypeAnnotation() {
        var marker = markerCreate();
        expectKeyword('void');
        return markerApply(marker, delegate.createVoidTypeAnnotation());
    }

    function parseParametricTypeAnnotation() {
        var marker = markerCreate(), typeIdentifier, paramTypes = [];

        expect('<');
        while (!match('>')) {
            paramTypes.push(parseVariableIdentifier());
            if (!match('>')) {
                expect(',');
            }
        }
        expect('>');

        return markerApply(marker, delegate.createParametricTypeAnnotation(
            paramTypes
        ));
    }

    function parseTypeAnnotationWithoutUnions() {
        var typeIdentifier = null, params = null, returnType = null,
            nullable = false, marker = markerCreate(), returnTypeMarker = null,
            parametricType, annotation;

        if (match('?')) {
            lex();
            nullable = true;
        }

        if (match('{')) {
            return markerApply(marker, parseObjectTypeAnnotation(nullable));
        }

        if (lookahead.type === Token.Identifier) {
            typeIdentifier = parseVariableIdentifier();
            if (match('<')) {
                parametricType = parseParametricTypeAnnotation();
            }
        } else if (match('(')) {
            lex();
            params = [];
            while (lookahead.type === Token.Identifier || match('?')) {
                params.push(parseTypeAnnotatableIdentifier(
                    true, /* requireTypeAnnotation */
                    true /* canBeOptionalParam */
                ));
                if (!match(')')) {
                    expect(',');
                }
            }
            expect(')');

            returnTypeMarker = markerCreate();
            expect('=>');

            returnType = parseTypeAnnotation(true);
        } else {
            if (!matchKeyword('void')) {
                throwUnexpected(lookahead);
            } else {
                return markerApply(marker, parseVoidTypeAnnotation());
            }
        }

        return markerApply(marker, delegate.createTypeAnnotation(
            typeIdentifier,
            parametricType,
            params,
            returnType,
            nullable
        ));
    }

    function parseUnionTypeAnnotation(types) {
        while (match('|')) {
            lex();
            types.push(parseTypeAnnotationWithoutUnions());
        }

        return delegate.createUnionTypeAnnotation(
            types
        );
    }

    function parseTypeAnnotation(dontExpectColon) {
        var type, marker = markerCreate();
        if (!dontExpectColon) {
            expect(':');
        }

        type = parseTypeAnnotationWithoutUnions(marker);

        if (match('|')) {
            type = parseUnionTypeAnnotation([type]);
        }

        return markerApply(marker, type);
    }

    function parseVariableIdentifier() {
        var marker = markerCreate(),
            token = lex();

        if (token.type !== Token.Identifier) {
            throwUnexpected(token);
        }

        return markerApply(marker, delegate.createIdentifier(token.value));
    }

    function parseTypeAnnotatableIdentifier(requireTypeAnnotation, canBeOptionalParam) {
        var marker = markerCreate(),
            ident = parseVariableIdentifier(),
            isOptionalParam = false;

        if (canBeOptionalParam && match('?')) {
            expect('?');
            isOptionalParam = true;
        }

        if (requireTypeAnnotation || match(':')) {
            ident = markerApply(marker, delegate.createTypeAnnotatedIdentifier(
                ident,
                parseTypeAnnotation()
            ));
        }

        if (isOptionalParam) {
            ident = markerApply(marker, delegate.createOptionalParameter(ident));
        }

        return ident;
    }

    function parseVariableDeclaration(kind) {
        var id,
            marker = markerCreate(),
            init = null;
        if (match('{')) {
            id = parseObjectInitialiser();
            reinterpretAsAssignmentBindingPattern(id);
        } else if (match('[')) {
            id = parseArrayInitialiser();
            reinterpretAsAssignmentBindingPattern(id);
        } else {
            id = state.allowKeyword ? parseNonComputedProperty() : parseTypeAnnotatableIdentifier();
            // 12.2.1
            if (strict && isRestrictedWord(id.name)) {
                throwErrorTolerant({}, Messages.StrictVarName);
            }
        }

        if (kind === 'const') {
            if (!match('=')) {
                throwError({}, Messages.NoUnintializedConst);
            }
            expect('=');
            init = parseAssignmentExpression();
        } else if (match('=')) {
            lex();
            init = parseAssignmentExpression();
        }

        return markerApply(marker, delegate.createVariableDeclarator(id, init));
    }

    function parseVariableDeclarationList(kind) {
        var list = [];

        do {
            list.push(parseVariableDeclaration(kind));
            if (!match(',')) {
                break;
            }
            lex();
        } while (index < length);

        return list;
    }

    function parseVariableStatement() {
        var declarations, marker = markerCreate();

        expectKeyword('var');

        declarations = parseVariableDeclarationList();

        consumeSemicolon();

        return markerApply(marker, delegate.createVariableDeclaration(declarations, 'var'));
    }

    // kind may be `const` or `let`
    // Both are experimental and not in the specification yet.
    // see http://wiki.ecmascript.org/doku.php?id=harmony:const
    // and http://wiki.ecmascript.org/doku.php?id=harmony:let
    function parseConstLetDeclaration(kind) {
        var declarations, marker = markerCreate();

        expectKeyword(kind);

        declarations = parseVariableDeclarationList(kind);

        consumeSemicolon();

        return markerApply(marker, delegate.createVariableDeclaration(declarations, kind));
    }

    // people.mozilla.org/~jorendorff/es6-draft.html

    function parseModuleSpecifier() {
        var marker = markerCreate(),
            specifier;

        if (lookahead.type !== Token.StringLiteral) {
            throwError({}, Messages.InvalidModuleSpecifier);
        }
        specifier = delegate.createModuleSpecifier(lookahead);
        lex();
        return markerApply(marker, specifier);
    }

    function parseExportBatchSpecifier() {
        var marker = markerCreate();
        expect('*');
        return markerApply(marker, delegate.createExportBatchSpecifier());
    }

    function parseExportSpecifier() {
        var id, name = null, marker = markerCreate(), from;
        if (matchKeyword('default')) {
            lex();
            id = markerApply(marker, delegate.createIdentifier('default'));
            // export {default} from "something";
        } else {
            id = parseVariableIdentifier();
        }
        if (matchContextualKeyword('as')) {
            lex();
            name = parseNonComputedProperty();
        }

        return markerApply(marker, delegate.createExportSpecifier(id, name));
    }

    function parseExportDeclaration() {
        var backtrackToken, id, previousAllowKeyword, declaration = null,
            isExportFromIdentifier,
            src = null, specifiers = [],
            marker = markerCreate();

        expectKeyword('export');

        if (matchKeyword('default')) {
            // covers:
            // export default ...
            lex();
            if (matchKeyword('function') || matchKeyword('class')) {
                backtrackToken = lookahead;
                lex();
                if (isIdentifierName(lookahead)) {
                    // covers:
                    // export default function foo () {}
                    // export default class foo {}
                    id = parseNonComputedProperty();
                    rewind(backtrackToken);
                    return markerApply(marker, delegate.createExportDeclaration(true, parseSourceElement(), [id], null));
                }
                // covers:
                // export default function () {}
                // export default class {}
                rewind(backtrackToken);
                switch (lookahead.value) {
                case 'class':
                    return markerApply(marker, delegate.createExportDeclaration(true, parseClassExpression(), [], null));
                case 'function':
                    return markerApply(marker, delegate.createExportDeclaration(true, parseFunctionExpression(), [], null));
                }
            }

            if (matchContextualKeyword('from')) {
                throwError({}, Messages.UnexpectedToken, lookahead.value);
            }

            // covers:
            // export default {};
            // export default [];
            if (match('{')) {
                declaration = parseObjectInitialiser();
            } else if (match('[')) {
                declaration = parseArrayInitialiser();
            } else {
                declaration = parseAssignmentExpression();
            }
            consumeSemicolon();
            return markerApply(marker, delegate.createExportDeclaration(true, declaration, [], null));
        }

        // non-default export
        if (lookahead.type === Token.Keyword) {
            // covers:
            // export var f = 1;
            switch (lookahead.value) {
            case 'let':
            case 'const':
            case 'var':
            case 'class':
            case 'function':
                return markerApply(marker, delegate.createExportDeclaration(false, parseSourceElement(), specifiers, null));
            }
        }

        if (match('*')) {
            // covers:
            // export * from "foo";
            specifiers.push(parseExportBatchSpecifier());

            if (!matchContextualKeyword('from')) {
                throwError({}, lookahead.value ?
                        Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value);
            }
            lex();
            src = parseModuleSpecifier();
            consumeSemicolon();

            return markerApply(marker, delegate.createExportDeclaration(false, null, specifiers, src));
        }

        expect('{');
        do {
            isExportFromIdentifier = isExportFromIdentifier || matchKeyword('default');
            specifiers.push(parseExportSpecifier());
        } while (match(',') && lex());
        expect('}');

        if (matchContextualKeyword('from')) {
            // covering:
            // export {default} from "foo";
            // export {foo} from "foo";
            lex();
            src = parseModuleSpecifier();
            consumeSemicolon();
        } else if (isExportFromIdentifier) {
            // covering:
            // export {default}; // missing fromClause
            throwError({}, lookahead.value ?
                    Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value);
        } else {
            // cover
            // export {foo};
            consumeSemicolon();
        }
        return markerApply(marker, delegate.createExportDeclaration(false, declaration, specifiers, src));
    }


    function parseImportSpecifier() {
        // import {<foo as bar>} ...;
        var id, name = null, marker = markerCreate();

        id = parseNonComputedProperty();
        if (matchContextualKeyword('as')) {
            lex();
            name = parseVariableIdentifier();
        }

        return markerApply(marker, delegate.createImportSpecifier(id, name));
    }

    function parseNamedImports() {
        var specifiers = [];
        // {foo, bar as bas}
        expect('{');
        do {
            specifiers.push(parseImportSpecifier());
        } while (match(',') && lex());
        expect('}');
        return specifiers;
    }

    function parseImportDefaultSpecifier() {
        // import <foo> ...;
        var id, marker = markerCreate();

        id = parseNonComputedProperty();

        return markerApply(marker, delegate.createImportDefaultSpecifier(id));
    }

    function parseImportNamespaceSpecifier() {
        // import <* as foo> ...;
        var id, marker = markerCreate();

        expect('*');
        if (!matchContextualKeyword('as')) {
            throwError({}, Messages.NoAsAfterImportNamespace);
        }
        lex();
        id = parseNonComputedProperty();

        return markerApply(marker, delegate.createImportNamespaceSpecifier(id));
    }

    function parseImportDeclaration() {
        var specifiers, src, marker = markerCreate();

        expectKeyword('import');
        specifiers = [];

        if (lookahead.type === Token.StringLiteral) {
            // covers:
            // import "foo";
            src = parseModuleSpecifier();
            consumeSemicolon();
            return markerApply(marker, delegate.createImportDeclaration(specifiers, src));
        }

        if (!matchKeyword('default') && isIdentifierName(lookahead)) {
            // covers:
            // import foo
            // import foo, ...
            specifiers.push(parseImportDefaultSpecifier());
            if (match(',')) {
                lex();
            }
        }
        if (match('*')) {
            // covers:
            // import foo, * as foo
            // import * as foo
            specifiers.push(parseImportNamespaceSpecifier());
        } else if (match('{')) {
            // covers:
            // import foo, {bar}
            // import {bar}
            specifiers = specifiers.concat(parseNamedImports());
        }

        if (!matchContextualKeyword('from')) {
            throwError({}, lookahead.value ?
                    Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value);
        }
        lex();
        src = parseModuleSpecifier();
        consumeSemicolon();

        return markerApply(marker, delegate.createImportDeclaration(specifiers, src));
    }

    // 12.3 Empty Statement

    function parseEmptyStatement() {
        var marker = markerCreate();
        expect(';');
        return markerApply(marker, delegate.createEmptyStatement());
    }

    // 12.4 Expression Statement

    function parseExpressionStatement() {
        var marker = markerCreate(), expr = parseExpression();
        consumeSemicolon();
        return markerApply(marker, delegate.createExpressionStatement(expr));
    }

    // 12.5 If statement

    function parseIfStatement() {
        var test, consequent, alternate, marker = markerCreate();

        expectKeyword('if');

        expect('(');

        test = parseExpression();

        expect(')');

        consequent = parseStatement();

        if (matchKeyword('else')) {
            lex();
            alternate = parseStatement();
        } else {
            alternate = null;
        }

        return markerApply(marker, delegate.createIfStatement(test, consequent, alternate));
    }

    // 12.6 Iteration Statements

    function parseDoWhileStatement() {
        var body, test, oldInIteration, marker = markerCreate();

        expectKeyword('do');

        oldInIteration = state.inIteration;
        state.inIteration = true;

        body = parseStatement();

        state.inIteration = oldInIteration;

        expectKeyword('while');

        expect('(');

        test = parseExpression();

        expect(')');

        if (match(';')) {
            lex();
        }

        return markerApply(marker, delegate.createDoWhileStatement(body, test));
    }

    function parseWhileStatement() {
        var test, body, oldInIteration, marker = markerCreate();

        expectKeyword('while');

        expect('(');

        test = parseExpression();

        expect(')');

        oldInIteration = state.inIteration;
        state.inIteration = true;

        body = parseStatement();

        state.inIteration = oldInIteration;

        return markerApply(marker, delegate.createWhileStatement(test, body));
    }

    function parseForVariableDeclaration() {
        var marker = markerCreate(),
            token = lex(),
            declarations = parseVariableDeclarationList();

        return markerApply(marker, delegate.createVariableDeclaration(declarations, token.value));
    }

    function parseForStatement(opts) {
        var init, test, update, left, right, body, operator, oldInIteration,
            marker = markerCreate();
        init = test = update = null;
        expectKeyword('for');

        // http://wiki.ecmascript.org/doku.php?id=proposals:iterators_and_generators&s=each
        if (matchContextualKeyword('each')) {
            throwError({}, Messages.EachNotAllowed);
        }

        expect('(');

        if (match(';')) {
            lex();
        } else {
            if (matchKeyword('var') || matchKeyword('let') || matchKeyword('const')) {
                state.allowIn = false;
                init = parseForVariableDeclaration();
                state.allowIn = true;

                if (init.declarations.length === 1) {
                    if (matchKeyword('in') || matchContextualKeyword('of')) {
                        operator = lookahead;
                        if (!((operator.value === 'in' || init.kind !== 'var') && init.declarations[0].init)) {
                            lex();
                            left = init;
                            right = parseExpression();
                            init = null;
                        }
                    }
                }
            } else {
                state.allowIn = false;
                init = parseExpression();
                state.allowIn = true;

                if (matchContextualKeyword('of')) {
                    operator = lex();
                    left = init;
                    right = parseExpression();
                    init = null;
                } else if (matchKeyword('in')) {
                    // LeftHandSideExpression
                    if (!isAssignableLeftHandSide(init)) {
                        throwError({}, Messages.InvalidLHSInForIn);
                    }
                    operator = lex();
                    left = init;
                    right = parseExpression();
                    init = null;
                }
            }

            if (typeof left === 'undefined') {
                expect(';');
            }
        }

        if (typeof left === 'undefined') {

            if (!match(';')) {
                test = parseExpression();
            }
            expect(';');

            if (!match(')')) {
                update = parseExpression();
            }
        }

        expect(')');

        oldInIteration = state.inIteration;
        state.inIteration = true;

        if (!(opts !== undefined && opts.ignoreBody)) {
            body = parseStatement();
        }

        state.inIteration = oldInIteration;

        if (typeof left === 'undefined') {
            return markerApply(marker, delegate.createForStatement(init, test, update, body));
        }

        if (operator.value === 'in') {
            return markerApply(marker, delegate.createForInStatement(left, right, body));
        }
        return markerApply(marker, delegate.createForOfStatement(left, right, body));
    }

    // 12.7 The continue statement

    function parseContinueStatement() {
        var label = null, key, marker = markerCreate();

        expectKeyword('continue');

        // Optimize the most common form: 'continue;'.
        if (source.charCodeAt(index) === 59) {
            lex();

            if (!state.inIteration) {
                throwError({}, Messages.IllegalContinue);
            }

            return markerApply(marker, delegate.createContinueStatement(null));
        }

        if (peekLineTerminator()) {
            if (!state.inIteration) {
                throwError({}, Messages.IllegalContinue);
            }

            return markerApply(marker, delegate.createContinueStatement(null));
        }

        if (lookahead.type === Token.Identifier) {
            label = parseVariableIdentifier();

            key = '$' + label.name;
            if (!Object.prototype.hasOwnProperty.call(state.labelSet, key)) {
                throwError({}, Messages.UnknownLabel, label.name);
            }
        }

        consumeSemicolon();

        if (label === null && !state.inIteration) {
            throwError({}, Messages.IllegalContinue);
        }

        return markerApply(marker, delegate.createContinueStatement(label));
    }

    // 12.8 The break statement

    function parseBreakStatement() {
        var label = null, key, marker = markerCreate();

        expectKeyword('break');

        // Catch the very common case first: immediately a semicolon (char #59).
        if (source.charCodeAt(index) === 59) {
            lex();

            if (!(state.inIteration || state.inSwitch)) {
                throwError({}, Messages.IllegalBreak);
            }

            return markerApply(marker, delegate.createBreakStatement(null));
        }

        if (peekLineTerminator()) {
            if (!(state.inIteration || state.inSwitch)) {
                throwError({}, Messages.IllegalBreak);
            }

            return markerApply(marker, delegate.createBreakStatement(null));
        }

        if (lookahead.type === Token.Identifier) {
            label = parseVariableIdentifier();

            key = '$' + label.name;
            if (!Object.prototype.hasOwnProperty.call(state.labelSet, key)) {
                throwError({}, Messages.UnknownLabel, label.name);
            }
        }

        consumeSemicolon();

        if (label === null && !(state.inIteration || state.inSwitch)) {
            throwError({}, Messages.IllegalBreak);
        }

        return markerApply(marker, delegate.createBreakStatement(label));
    }

    // 12.9 The return statement

    function parseReturnStatement() {
        var argument = null, marker = markerCreate();

        expectKeyword('return');

        if (!state.inFunctionBody) {
            throwErrorTolerant({}, Messages.IllegalReturn);
        }

        // 'return' followed by a space and an identifier is very common.
        if (source.charCodeAt(index) === 32) {
            if (isIdentifierStart(source.charCodeAt(index + 1))) {
                argument = parseExpression();
                consumeSemicolon();
                return markerApply(marker, delegate.createReturnStatement(argument));
            }
        }

        if (peekLineTerminator()) {
            return markerApply(marker, delegate.createReturnStatement(null));
        }

        if (!match(';')) {
            if (!match('}') && lookahead.type !== Token.EOF) {
                argument = parseExpression();
            }
        }

        consumeSemicolon();

        return markerApply(marker, delegate.createReturnStatement(argument));
    }

    // 12.10 The with statement

    function parseWithStatement() {
        var object, body, marker = markerCreate();

        if (strict) {
            throwErrorTolerant({}, Messages.StrictModeWith);
        }

        expectKeyword('with');

        expect('(');

        object = parseExpression();

        expect(')');

        body = parseStatement();

        return markerApply(marker, delegate.createWithStatement(object, body));
    }

    // 12.10 The swith statement

    function parseSwitchCase() {
        var test,
            consequent = [],
            sourceElement,
            marker = markerCreate();

        if (matchKeyword('default')) {
            lex();
            test = null;
        } else {
            expectKeyword('case');
            test = parseExpression();
        }
        expect(':');

        while (index < length) {
            if (match('}') || matchKeyword('default') || matchKeyword('case')) {
                break;
            }
            sourceElement = parseSourceElement();
            if (typeof sourceElement === 'undefined') {
                break;
            }
            consequent.push(sourceElement);
        }

        return markerApply(marker, delegate.createSwitchCase(test, consequent));
    }

    function parseSwitchStatement() {
        var discriminant, cases, clause, oldInSwitch, defaultFound, marker = markerCreate();

        expectKeyword('switch');

        expect('(');

        discriminant = parseExpression();

        expect(')');

        expect('{');

        cases = [];

        if (match('}')) {
            lex();
            return markerApply(marker, delegate.createSwitchStatement(discriminant, cases));
        }

        oldInSwitch = state.inSwitch;
        state.inSwitch = true;
        defaultFound = false;

        while (index < length) {
            if (match('}')) {
                break;
            }
            clause = parseSwitchCase();
            if (clause.test === null) {
                if (defaultFound) {
                    throwError({}, Messages.MultipleDefaultsInSwitch);
                }
                defaultFound = true;
            }
            cases.push(clause);
        }

        state.inSwitch = oldInSwitch;

        expect('}');

        return markerApply(marker, delegate.createSwitchStatement(discriminant, cases));
    }

    // 12.13 The throw statement

    function parseThrowStatement() {
        var argument, marker = markerCreate();

        expectKeyword('throw');

        if (peekLineTerminator()) {
            throwError({}, Messages.NewlineAfterThrow);
        }

        argument = parseExpression();

        consumeSemicolon();

        return markerApply(marker, delegate.createThrowStatement(argument));
    }

    // 12.14 The try statement

    function parseCatchClause() {
        var param, body, marker = markerCreate();

        expectKeyword('catch');

        expect('(');
        if (match(')')) {
            throwUnexpected(lookahead);
        }

        param = parseExpression();
        // 12.14.1
        if (strict && param.type === Syntax.Identifier && isRestrictedWord(param.name)) {
            throwErrorTolerant({}, Messages.StrictCatchVariable);
        }

        expect(')');
        body = parseBlock();
        return markerApply(marker, delegate.createCatchClause(param, body));
    }

    function parseTryStatement() {
        var block, handlers = [], finalizer = null, marker = markerCreate();

        expectKeyword('try');

        block = parseBlock();

        if (matchKeyword('catch')) {
            handlers.push(parseCatchClause());
        }

        if (matchKeyword('finally')) {
            lex();
            finalizer = parseBlock();
        }

        if (handlers.length === 0 && !finalizer) {
            throwError({}, Messages.NoCatchOrFinally);
        }

        return markerApply(marker, delegate.createTryStatement(block, [], handlers, finalizer));
    }

    // 12.15 The debugger statement

    function parseDebuggerStatement() {
        var marker = markerCreate();
        expectKeyword('debugger');

        consumeSemicolon();

        return markerApply(marker, delegate.createDebuggerStatement());
    }

    // 12 Statements

    function parseStatement() {
        var type = lookahead.type,
            marker,
            expr,
            labeledBody,
            key;

        if (type === Token.EOF) {
            throwUnexpected(lookahead);
        }

        if (type === Token.Punctuator) {
            switch (lookahead.value) {
            case ';':
                return parseEmptyStatement();
            case '{':
                return parseBlock();
            case '(':
                return parseExpressionStatement();
            default:
                break;
            }
        }

        if (type === Token.Keyword) {
            switch (lookahead.value) {
            case 'break':
                return parseBreakStatement();
            case 'continue':
                return parseContinueStatement();
            case 'debugger':
                return parseDebuggerStatement();
            case 'do':
                return parseDoWhileStatement();
            case 'for':
                return parseForStatement();
            case 'function':
                return parseFunctionDeclaration();
            case 'class':
                return parseClassDeclaration();
            case 'if':
                return parseIfStatement();
            case 'return':
                return parseReturnStatement();
            case 'switch':
                return parseSwitchStatement();
            case 'throw':
                return parseThrowStatement();
            case 'try':
                return parseTryStatement();
            case 'var':
                return parseVariableStatement();
            case 'while':
                return parseWhileStatement();
            case 'with':
                return parseWithStatement();
            default:
                break;
            }
        }

        if (matchAsyncFuncExprOrDecl()) {
            return parseFunctionDeclaration();
        }

        marker = markerCreate();
        expr = parseExpression();

        // 12.12 Labelled Statements
        if ((expr.type === Syntax.Identifier) && match(':')) {
            lex();

            key = '$' + expr.name;
            if (Object.prototype.hasOwnProperty.call(state.labelSet, key)) {
                throwError({}, Messages.Redeclaration, 'Label', expr.name);
            }

            state.labelSet[key] = true;
            labeledBody = parseStatement();
            delete state.labelSet[key];
            return markerApply(marker, delegate.createLabeledStatement(expr, labeledBody));
        }

        consumeSemicolon();

        return markerApply(marker, delegate.createExpressionStatement(expr));
    }

    // 13 Function Definition

    function parseConciseBody() {
        if (match('{')) {
            return parseFunctionSourceElements();
        }
        return parseAssignmentExpression();
    }

    function parseFunctionSourceElements() {
        var sourceElement, sourceElements = [], token, directive, firstRestricted,
            oldLabelSet, oldInIteration, oldInSwitch, oldInFunctionBody, oldParenthesizedCount,
            marker = markerCreate();

        expect('{');

        while (index < length) {
            if (lookahead.type !== Token.StringLiteral) {
                break;
            }
            token = lookahead;

            sourceElement = parseSourceElement();
            sourceElements.push(sourceElement);
            if (sourceElement.expression.type !== Syntax.Literal) {
                // this is not directive
                break;
            }
            directive = source.slice(token.range[0] + 1, token.range[1] - 1);
            if (directive === 'use strict') {
                strict = true;
                if (firstRestricted) {
                    throwErrorTolerant(firstRestricted, Messages.StrictOctalLiteral);
                }
            } else {
                if (!firstRestricted && token.octal) {
                    firstRestricted = token;
                }
            }
        }

        oldLabelSet = state.labelSet;
        oldInIteration = state.inIteration;
        oldInSwitch = state.inSwitch;
        oldInFunctionBody = state.inFunctionBody;
        oldParenthesizedCount = state.parenthesizedCount;

        state.labelSet = {};
        state.inIteration = false;
        state.inSwitch = false;
        state.inFunctionBody = true;
        state.parenthesizedCount = 0;

        while (index < length) {
            if (match('}')) {
                break;
            }
            sourceElement = parseSourceElement();
            if (typeof sourceElement === 'undefined') {
                break;
            }
            sourceElements.push(sourceElement);
        }

        expect('}');

        state.labelSet = oldLabelSet;
        state.inIteration = oldInIteration;
        state.inSwitch = oldInSwitch;
        state.inFunctionBody = oldInFunctionBody;
        state.parenthesizedCount = oldParenthesizedCount;

        return markerApply(marker, delegate.createBlockStatement(sourceElements));
    }

    function validateParam(options, param, name) {
        var key = '$' + name;
        if (strict) {
            if (isRestrictedWord(name)) {
                options.stricted = param;
                options.message = Messages.StrictParamName;
            }
            if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) {
                options.stricted = param;
                options.message = Messages.StrictParamDupe;
            }
        } else if (!options.firstRestricted) {
            if (isRestrictedWord(name)) {
                options.firstRestricted = param;
                options.message = Messages.StrictParamName;
            } else if (isStrictModeReservedWord(name)) {
                options.firstRestricted = param;
                options.message = Messages.StrictReservedWord;
            } else if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) {
                options.firstRestricted = param;
                options.message = Messages.StrictParamDupe;
            }
        }
        options.paramSet[key] = true;
    }

    function parseParam(options) {
        var token, rest, param, def;

        token = lookahead;
        if (token.value === '...') {
            token = lex();
            rest = true;
        }

        if (match('[')) {
            param = parseArrayInitialiser();
            reinterpretAsDestructuredParameter(options, param);
        } else if (match('{')) {
            if (rest) {
                throwError({}, Messages.ObjectPatternAsRestParameter);
            }
            param = parseObjectInitialiser();
            reinterpretAsDestructuredParameter(options, param);
        } else {
            // Typing rest params is awkward, so punting on that for now
            param =
                rest
                ? parseVariableIdentifier()
                : parseTypeAnnotatableIdentifier(
                    false, /* requireTypeAnnotation */
                    true /* canBeOptionalParam */
                );

            validateParam(options, token, token.value);
        }

        if (match('=')) {
            if (rest) {
                throwErrorTolerant(lookahead, Messages.DefaultRestParameter);
            }
            lex();
            def = parseAssignmentExpression();
            ++options.defaultCount;
        }

        if (rest) {
            if (!match(')')) {
                throwError({}, Messages.ParameterAfterRestParameter);
            }
            options.rest = param;
            return false;
        }

        options.params.push(param);
        options.defaults.push(def);
        return !match(')');
    }

    function parseParams(firstRestricted) {
        var options, marker = markerCreate();

        options = {
            params: [],
            defaultCount: 0,
            defaults: [],
            rest: null,
            firstRestricted: firstRestricted
        };

        expect('(');

        if (!match(')')) {
            options.paramSet = {};
            while (index < length) {
                if (!parseParam(options)) {
                    break;
                }
                expect(',');
            }
        }

        expect(')');

        if (options.defaultCount === 0) {
            options.defaults = [];
        }

        if (match(':')) {
            options.returnType = parseTypeAnnotation();
        }

        return markerApply(marker, options);
    }

    function parseFunctionDeclaration() {
        var id, body, token, tmp, firstRestricted, message, generator, isAsync,
            previousStrict, previousYieldAllowed, previousAwaitAllowed,
            marker = markerCreate(), parametricType;

        isAsync = false;
        if (matchAsync()) {
            lex();
            isAsync = true;
        }

        expectKeyword('function');

        generator = false;
        if (match('*')) {
            lex();
            generator = true;
        }

        token = lookahead;

        id = parseVariableIdentifier();

        if (match('<')) {
            parametricType = parseParametricTypeAnnotation();
        }

        if (strict) {
            if (isRestrictedWord(token.value)) {
                throwErrorTolerant(token, Messages.StrictFunctionName);
            }
        } else {
            if (isRestrictedWord(token.value)) {
                firstRestricted = token;
                message = Messages.StrictFunctionName;
            } else if (isStrictModeReservedWord(token.value)) {
                firstRestricted = token;
                message = Messages.StrictReservedWord;
            }
        }

        tmp = parseParams(firstRestricted);
        firstRestricted = tmp.firstRestricted;
        if (tmp.message) {
            message = tmp.message;
        }

        previousStrict = strict;
        previousYieldAllowed = state.yieldAllowed;
        state.yieldAllowed = generator;
        previousAwaitAllowed = state.awaitAllowed;
        state.awaitAllowed = isAsync;

        body = parseFunctionSourceElements();

        if (strict && firstRestricted) {
            throwError(firstRestricted, message);
        }
        if (strict && tmp.stricted) {
            throwErrorTolerant(tmp.stricted, message);
        }
        strict = previousStrict;
        state.yieldAllowed = previousYieldAllowed;
        state.awaitAllowed = previousAwaitAllowed;

        return markerApply(
            marker,
            delegate.createFunctionDeclaration(
                id,
                tmp.params,
                tmp.defaults,
                body,
                tmp.rest,
                generator,
                false,
                isAsync,
                tmp.returnType,
                parametricType
            )
        );
    }

    function parseFunctionExpression() {
        var token, id = null, firstRestricted, message, tmp, body, generator, isAsync,
            previousStrict, previousYieldAllowed, previousAwaitAllowed,
            marker = markerCreate(), parametricType;

        isAsync = false;
        if (matchAsync()) {
            lex();
            isAsync = true;
        }

        expectKeyword('function');

        generator = false;

        if (match('*')) {
            lex();
            generator = true;
        }

        if (!match('(')) {
            if (!match('<')) {
                token = lookahead;
                id = parseVariableIdentifier();

                if (strict) {
                    if (isRestrictedWord(token.value)) {
                        throwErrorTolerant(token, Messages.StrictFunctionName);
                    }
                } else {
                    if (isRestrictedWord(token.value)) {
                        firstRestricted = token;
                        message = Messages.StrictFunctionName;
                    } else if (isStrictModeReservedWord(token.value)) {
                        firstRestricted = token;
                        message = Messages.StrictReservedWord;
                    }
                }
            }

            if (match('<')) {
                parametricType = parseParametricTypeAnnotation();
            }
        }

        tmp = parseParams(firstRestricted);
        firstRestricted = tmp.firstRestricted;
        if (tmp.message) {
            message = tmp.message;
        }

        previousStrict = strict;
        previousYieldAllowed = state.yieldAllowed;
        state.yieldAllowed = generator;
        previousAwaitAllowed = state.awaitAllowed;
        state.awaitAllowed = isAsync;

        body = parseFunctionSourceElements();

        if (strict && firstRestricted) {
            throwError(firstRestricted, message);
        }
        if (strict && tmp.stricted) {
            throwErrorTolerant(tmp.stricted, message);
        }
        strict = previousStrict;
        state.yieldAllowed = previousYieldAllowed;
        state.awaitAllowed = previousAwaitAllowed;

        return markerApply(
            marker,
            delegate.createFunctionExpression(
                id,
                tmp.params,
                tmp.defaults,
                body,
                tmp.rest,
                generator,
                false,
                isAsync,
                tmp.returnType,
                parametricType
            )
        );
    }

    function parseYieldExpression() {
        var delegateFlag, expr, marker = markerCreate();

        expectKeyword('yield', !strict);

        delegateFlag = false;
        if (match('*')) {
            lex();
            delegateFlag = true;
        }

        expr = parseAssignmentExpression();

        return markerApply(marker, delegate.createYieldExpression(expr, delegateFlag));
    }

    function parseAwaitExpression() {
        var expr, marker = markerCreate();
        expectContextualKeyword('await');
        expr = parseAssignmentExpression();
        return markerApply(marker, delegate.createAwaitExpression(expr));
    }

    // 14 Classes

    function parseMethodDefinition(existingPropNames) {
        var token, key, param, propType, isValidDuplicateProp = false,
            isAsync, marker = markerCreate(), token2, parametricType,
            parametricTypeMarker, annotationMarker;

        if (lookahead.value === 'static') {
            propType = ClassPropertyType.static;
            lex();
        } else {
            propType = ClassPropertyType.prototype;
        }

        if (match('*')) {
            lex();
            return markerApply(marker, delegate.createMethodDefinition(
                propType,
                '',
                parseObjectPropertyKey(),
                parsePropertyMethodFunction({ generator: true })
            ));
        }

        token = lookahead;
        //parametricTypeMarker = markerCreate();
        key = parseObjectPropertyKey();

        if (token.value === 'get' && !match('(')) {
            key = parseObjectPropertyKey();

            // It is a syntax error if any other properties have a name
            // duplicating this one unless they are a setter
            if (existingPropNames[propType].hasOwnProperty(key.name)) {
                isValidDuplicateProp =
                    // There isn't already a getter for this prop
                    existingPropNames[propType][key.name].get === undefined
                    // There isn't already a data prop by this name
                    && existingPropNames[propType][key.name].data === undefined
                    // The only existing prop by this name is a setter
                    && existingPropNames[propType][key.name].set !== undefined;
                if (!isValidDuplicateProp) {
                    throwError(key, Messages.IllegalDuplicateClassProperty);
                }
            } else {
                existingPropNames[propType][key.name] = {};
            }
            existingPropNames[propType][key.name].get = true;

            expect('(');
            expect(')');
            return markerApply(marker, delegate.createMethodDefinition(
                propType,
                'get',
                key,
                parsePropertyFunction({ generator: false })
            ));
        }
        if (token.value === 'set' && !match('(')) {
            key = parseObjectPropertyKey();

            // It is a syntax error if any other properties have a name
            // duplicating this one unless they are a getter
            if (existingPropNames[propType].hasOwnProperty(key.name)) {
                isValidDuplicateProp =
                    // There isn't already a setter for this prop
                    existingPropNames[propType][key.name].set === undefined
                    // There isn't already a data prop by this name
                    && existingPropNames[propType][key.name].data === undefined
                    // The only existing prop by this name is a getter
                    && existingPropNames[propType][key.name].get !== undefined;
                if (!isValidDuplicateProp) {
                    throwError(key, Messages.IllegalDuplicateClassProperty);
                }
            } else {
                existingPropNames[propType][key.name] = {};
            }
            existingPropNames[propType][key.name].set = true;

            expect('(');
            token = lookahead;
            param = [ parseTypeAnnotatableIdentifier() ];
            expect(')');
            return markerApply(marker, delegate.createMethodDefinition(
                propType,
                'set',
                key,
                parsePropertyFunction({ params: param, generator: false, name: token })
            ));
        }

        if (match('<')) {
            parametricType = parseParametricTypeAnnotation();
        }

        isAsync = token.value === 'async' && !match('(');
        if (isAsync) {
            key = parseObjectPropertyKey();
        }

        // It is a syntax error if any other properties have the same name as a
        // non-getter, non-setter method
        if (existingPropNames[propType].hasOwnProperty(key.name)) {
            throwError(key, Messages.IllegalDuplicateClassProperty);
        } else {
            existingPropNames[propType][key.name] = {};
        }
        existingPropNames[propType][key.name].data = true;

        return markerApply(marker, delegate.createMethodDefinition(
            propType,
            '',
            key,
            parsePropertyMethodFunction({
                generator: false,
                async: isAsync,
                parametricType: parametricType
            })
        ));
    }

    function parseClassProperty(existingPropNames) {
        var marker = markerCreate(), propertyIdentifier;

        propertyIdentifier = parseTypeAnnotatableIdentifier();
        expect(';');

        return markerApply(marker, delegate.createClassProperty(
            propertyIdentifier
        ));
    }

    function parseClassElement(existingProps) {
        if (match(';')) {
            lex();
            return;
        }

        var doubleLookahead = lookahead2();
        if (doubleLookahead.type === Token.Punctuator) {
            if (doubleLookahead.value === ':') {
                return parseClassProperty(existingProps);
            }
        }

        return parseMethodDefinition(existingProps);
    }

    function parseClassBody() {
        var classElement, classElements = [], existingProps = {}, marker = markerCreate();

        existingProps[ClassPropertyType.static] = {};
        existingProps[ClassPropertyType.prototype] = {};

        expect('{');

        while (index < length) {
            if (match('}')) {
                break;
            }
            classElement = parseClassElement(existingProps);

            if (typeof classElement !== 'undefined') {
                classElements.push(classElement);
            }
        }

        expect('}');

        return markerApply(marker, delegate.createClassBody(classElements));
    }

    function parseClassExpression() {
        var id, previousYieldAllowed, superClass = null, marker = markerCreate(),
            parametricType;

        expectKeyword('class');

        if (!matchKeyword('extends') && !match('{')) {
            id = parseVariableIdentifier();
        }

        if (match('<')) {
            parametricType = parseParametricTypeAnnotation();
        }

        if (matchKeyword('extends')) {
            expectKeyword('extends');
            previousYieldAllowed = state.yieldAllowed;
            state.yieldAllowed = false;
            superClass = parseAssignmentExpression();
            state.yieldAllowed = previousYieldAllowed;
        }

        return markerApply(marker, delegate.createClassExpression(id, superClass, parseClassBody(), parametricType));
    }

    function parseClassDeclaration() {
        var id, previousYieldAllowed, superClass = null, marker = markerCreate(),
            parametricType, superParametricType;

        expectKeyword('class');

        id = parseVariableIdentifier();

        if (match('<')) {
            parametricType = parseParametricTypeAnnotation();
        }

        if (matchKeyword('extends')) {
            expectKeyword('extends');
            previousYieldAllowed = state.yieldAllowed;
            state.yieldAllowed = false;
            superClass = parseAssignmentExpression();
            state.yieldAllowed = previousYieldAllowed;
        }

        return markerApply(marker, delegate.createClassDeclaration(id, superClass, parseClassBody(), parametricType, superParametricType));
    }

    // 15 Program

    function parseSourceElement() {
        if (lookahead.type === Token.Keyword) {
            switch (lookahead.value) {
            case 'const':
            case 'let':
                return parseConstLetDeclaration(lookahead.value);
            case 'function':
                return parseFunctionDeclaration();
            default:
                return parseStatement();
            }
        }

        if (lookahead.type !== Token.EOF) {
            return parseStatement();
        }
    }

    function parseProgramElement() {
        if (lookahead.type === Token.Keyword) {
            switch (lookahead.value) {
            case 'export':
                return parseExportDeclaration();
            case 'import':
                return parseImportDeclaration();
            }
        }

        return parseSourceElement();
    }

    function parseProgramElements() {
        var sourceElement, sourceElements = [], token, directive, firstRestricted;

        while (index < length) {
            token = lookahead;
            if (token.type !== Token.StringLiteral) {
                break;
            }

            sourceElement = parseProgramElement();
            sourceElements.push(sourceElement);
            if (sourceElement.expression.type !== Syntax.Literal) {
                // this is not directive
                break;
            }
            directive = source.slice(token.range[0] + 1, token.range[1] - 1);
            if (directive === 'use strict') {
                strict = true;
                if (firstRestricted) {
                    throwErrorTolerant(firstRestricted, Messages.StrictOctalLiteral);
                }
            } else {
                if (!firstRestricted && token.octal) {
                    firstRestricted = token;
                }
            }
        }

        while (index < length) {
            sourceElement = parseProgramElement();
            if (typeof sourceElement === 'undefined') {
                break;
            }
            sourceElements.push(sourceElement);
        }
        return sourceElements;
    }

    function parseProgram() {
        var body, marker = markerCreate();
        strict = false;
        peek();
        body = parseProgramElements();
        return markerApply(marker, delegate.createProgram(body));
    }

    // The following functions are needed only when the option to preserve
    // the comments is active.

    function addComment(type, value, start, end, loc) {
        var comment;

        assert(typeof start === 'number', 'Comment must have valid position');

        // Because the way the actual token is scanned, often the comments
        // (if any) are skipped twice during the lexical analysis.
        // Thus, we need to skip adding a comment if the comment array already
        // handled it.
        if (state.lastCommentStart >= start) {
            return;
        }
        state.lastCommentStart = start;

        comment = {
            type: type,
            value: value
        };
        if (extra.range) {
            comment.range = [start, end];
        }
        if (extra.loc) {
            comment.loc = loc;
        }
        extra.comments.push(comment);
        if (extra.attachComment) {
            extra.leadingComments.push(comment);
            extra.trailingComments.push(comment);
        }
    }

    function scanComment() {
        var comment, ch, loc, start, blockComment, lineComment;

        comment = '';
        blockComment = false;
        lineComment = false;

        while (index < length) {
            ch = source[index];

            if (lineComment) {
                ch = source[index++];
                if (isLineTerminator(ch.charCodeAt(0))) {
                    loc.end = {
                        line: lineNumber,
                        column: index - lineStart - 1
                    };
                    lineComment = false;
                    addComment('Line', comment, start, index - 1, loc);
                    if (ch === '\r' && source[index] === '\n') {
                        ++index;
                    }
                    ++lineNumber;
                    lineStart = index;
                    comment = '';
                } else if (index >= length) {
                    lineComment = false;
                    comment += ch;
                    loc.end = {
                        line: lineNumber,
                        column: length - lineStart
                    };
                    addComment('Line', comment, start, length, loc);
                } else {
                    comment += ch;
                }
            } else if (blockComment) {
                if (isLineTerminator(ch.charCodeAt(0))) {
                    if (ch === '\r') {
                        ++index;
                        comment += '\r';
                    }
                    if (ch !== '\r' || source[index] === '\n') {
                        comment += source[index];
                        ++lineNumber;
                        ++index;
                        lineStart = index;
                        if (index >= length) {
                            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                        }
                    }
                } else {
                    ch = source[index++];
                    if (index >= length) {
                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                    }
                    comment += ch;
                    if (ch === '*') {
                        ch = source[index];
                        if (ch === '/') {
                            comment = comment.substr(0, comment.length - 1);
                            blockComment = false;
                            ++index;
                            loc.end = {
                                line: lineNumber,
                                column: index - lineStart
                            };
                            addComment('Block', comment, start, index, loc);
                            comment = '';
                        }
                    }
                }
            } else if (ch === '/') {
                ch = source[index + 1];
                if (ch === '/') {
                    loc = {
                        start: {
                            line: lineNumber,
                            column: index - lineStart
                        }
                    };
                    start = index;
                    index += 2;
                    lineComment = true;
                    if (index >= length) {
                        loc.end = {
                            line: lineNumber,
                            column: index - lineStart
                        };
                        lineComment = false;
                        addComment('Line', comment, start, index, loc);
                    }
                } else if (ch === '*') {
                    start = index;
                    index += 2;
                    blockComment = true;
                    loc = {
                        start: {
                            line: lineNumber,
                            column: index - lineStart - 2
                        }
                    };
                    if (index >= length) {
                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                    }
                } else {
                    break;
                }
            } else if (isWhiteSpace(ch.charCodeAt(0))) {
                ++index;
            } else if (isLineTerminator(ch.charCodeAt(0))) {
                ++index;
                if (ch ===  '\r' && source[index] === '\n') {
                    ++index;
                }
                ++lineNumber;
                lineStart = index;
            } else {
                break;
            }
        }
    }

    // 16 XJS

    XHTMLEntities = {
        quot: '\u0022',
        amp: '&',
        apos: '\u0027',
        lt: '<',
        gt: '>',
        nbsp: '\u00A0',
        iexcl: '\u00A1',
        cent: '\u00A2',
        pound: '\u00A3',
        curren: '\u00A4',
        yen: '\u00A5',
        brvbar: '\u00A6',
        sect: '\u00A7',
        uml: '\u00A8',
        copy: '\u00A9',
        ordf: '\u00AA',
        laquo: '\u00AB',
        not: '\u00AC',
        shy: '\u00AD',
        reg: '\u00AE',
        macr: '\u00AF',
        deg: '\u00B0',
        plusmn: '\u00B1',
        sup2: '\u00B2',
        sup3: '\u00B3',
        acute: '\u00B4',
        micro: '\u00B5',
        para: '\u00B6',
        middot: '\u00B7',
        cedil: '\u00B8',
        sup1: '\u00B9',
        ordm: '\u00BA',
        raquo: '\u00BB',
        frac14: '\u00BC',
        frac12: '\u00BD',
        frac34: '\u00BE',
        iquest: '\u00BF',
        Agrave: '\u00C0',
        Aacute: '\u00C1',
        Acirc: '\u00C2',
        Atilde: '\u00C3',
        Auml: '\u00C4',
        Aring: '\u00C5',
        AElig: '\u00C6',
        Ccedil: '\u00C7',
        Egrave: '\u00C8',
        Eacute: '\u00C9',
        Ecirc: '\u00CA',
        Euml: '\u00CB',
        Igrave: '\u00CC',
        Iacute: '\u00CD',
        Icirc: '\u00CE',
        Iuml: '\u00CF',
        ETH: '\u00D0',
        Ntilde: '\u00D1',
        Ograve: '\u00D2',
        Oacute: '\u00D3',
        Ocirc: '\u00D4',
        Otilde: '\u00D5',
        Ouml: '\u00D6',
        times: '\u00D7',
        Oslash: '\u00D8',
        Ugrave: '\u00D9',
        Uacute: '\u00DA',
        Ucirc: '\u00DB',
        Uuml: '\u00DC',
        Yacute: '\u00DD',
        THORN: '\u00DE',
        szlig: '\u00DF',
        agrave: '\u00E0',
        aacute: '\u00E1',
        acirc: '\u00E2',
        atilde: '\u00E3',
        auml: '\u00E4',
        aring: '\u00E5',
        aelig: '\u00E6',
        ccedil: '\u00E7',
        egrave: '\u00E8',
        eacute: '\u00E9',
        ecirc: '\u00EA',
        euml: '\u00EB',
        igrave: '\u00EC',
        iacute: '\u00ED',
        icirc: '\u00EE',
        iuml: '\u00EF',
        eth: '\u00F0',
        ntilde: '\u00F1',
        ograve: '\u00F2',
        oacute: '\u00F3',
        ocirc: '\u00F4',
        otilde: '\u00F5',
        ouml: '\u00F6',
        divide: '\u00F7',
        oslash: '\u00F8',
        ugrave: '\u00F9',
        uacute: '\u00FA',
        ucirc: '\u00FB',
        uuml: '\u00FC',
        yacute: '\u00FD',
        thorn: '\u00FE',
        yuml: '\u00FF',
        OElig: '\u0152',
        oelig: '\u0153',
        Scaron: '\u0160',
        scaron: '\u0161',
        Yuml: '\u0178',
        fnof: '\u0192',
        circ: '\u02C6',
        tilde: '\u02DC',
        Alpha: '\u0391',
        Beta: '\u0392',
        Gamma: '\u0393',
        Delta: '\u0394',
        Epsilon: '\u0395',
        Zeta: '\u0396',
        Eta: '\u0397',
        Theta: '\u0398',
        Iota: '\u0399',
        Kappa: '\u039A',
        Lambda: '\u039B',
        Mu: '\u039C',
        Nu: '\u039D',
        Xi: '\u039E',
        Omicron: '\u039F',
        Pi: '\u03A0',
        Rho: '\u03A1',
        Sigma: '\u03A3',
        Tau: '\u03A4',
        Upsilon: '\u03A5',
        Phi: '\u03A6',
        Chi: '\u03A7',
        Psi: '\u03A8',
        Omega: '\u03A9',
        alpha: '\u03B1',
        beta: '\u03B2',
        gamma: '\u03B3',
        delta: '\u03B4',
        epsilon: '\u03B5',
        zeta: '\u03B6',
        eta: '\u03B7',
        theta: '\u03B8',
        iota: '\u03B9',
        kappa: '\u03BA',
        lambda: '\u03BB',
        mu: '\u03BC',
        nu: '\u03BD',
        xi: '\u03BE',
        omicron: '\u03BF',
        pi: '\u03C0',
        rho: '\u03C1',
        sigmaf: '\u03C2',
        sigma: '\u03C3',
        tau: '\u03C4',
        upsilon: '\u03C5',
        phi: '\u03C6',
        chi: '\u03C7',
        psi: '\u03C8',
        omega: '\u03C9',
        thetasym: '\u03D1',
        upsih: '\u03D2',
        piv: '\u03D6',
        ensp: '\u2002',
        emsp: '\u2003',
        thinsp: '\u2009',
        zwnj: '\u200C',
        zwj: '\u200D',
        lrm: '\u200E',
        rlm: '\u200F',
        ndash: '\u2013',
        mdash: '\u2014',
        lsquo: '\u2018',
        rsquo: '\u2019',
        sbquo: '\u201A',
        ldquo: '\u201C',
        rdquo: '\u201D',
        bdquo: '\u201E',
        dagger: '\u2020',
        Dagger: '\u2021',
        bull: '\u2022',
        hellip: '\u2026',
        permil: '\u2030',
        prime: '\u2032',
        Prime: '\u2033',
        lsaquo: '\u2039',
        rsaquo: '\u203A',
        oline: '\u203E',
        frasl: '\u2044',
        euro: '\u20AC',
        image: '\u2111',
        weierp: '\u2118',
        real: '\u211C',
        trade: '\u2122',
        alefsym: '\u2135',
        larr: '\u2190',
        uarr: '\u2191',
        rarr: '\u2192',
        darr: '\u2193',
        harr: '\u2194',
        crarr: '\u21B5',
        lArr: '\u21D0',
        uArr: '\u21D1',
        rArr: '\u21D2',
        dArr: '\u21D3',
        hArr: '\u21D4',
        forall: '\u2200',
        part: '\u2202',
        exist: '\u2203',
        empty: '\u2205',
        nabla: '\u2207',
        isin: '\u2208',
        notin: '\u2209',
        ni: '\u220B',
        prod: '\u220F',
        sum: '\u2211',
        minus: '\u2212',
        lowast: '\u2217',
        radic: '\u221A',
        prop: '\u221D',
        infin: '\u221E',
        ang: '\u2220',
        and: '\u2227',
        or: '\u2228',
        cap: '\u2229',
        cup: '\u222A',
        'int': '\u222B',
        there4: '\u2234',
        sim: '\u223C',
        cong: '\u2245',
        asymp: '\u2248',
        ne: '\u2260',
        equiv: '\u2261',
        le: '\u2264',
        ge: '\u2265',
        sub: '\u2282',
        sup: '\u2283',
        nsub: '\u2284',
        sube: '\u2286',
        supe: '\u2287',
        oplus: '\u2295',
        otimes: '\u2297',
        perp: '\u22A5',
        sdot: '\u22C5',
        lceil: '\u2308',
        rceil: '\u2309',
        lfloor: '\u230A',
        rfloor: '\u230B',
        lang: '\u2329',
        rang: '\u232A',
        loz: '\u25CA',
        spades: '\u2660',
        clubs: '\u2663',
        hearts: '\u2665',
        diams: '\u2666'
    };

    function getQualifiedXJSName(object) {
        if (object.type === Syntax.XJSIdentifier) {
            return object.name;
        }
        if (object.type === Syntax.XJSNamespacedName) {
            return object.namespace.name + ':' + object.name.name;
        }
        if (object.type === Syntax.XJSMemberExpression) {
            return (
                getQualifiedXJSName(object.object) + '.' +
                getQualifiedXJSName(object.property)
            );
        }
    }

    function isXJSIdentifierStart(ch) {
        // exclude backslash (\)
        return (ch !== 92) && isIdentifierStart(ch);
    }

    function isXJSIdentifierPart(ch) {
        // exclude backslash (\) and add hyphen (-)
        return (ch !== 92) && (ch === 45 || isIdentifierPart(ch));
    }

    function scanXJSIdentifier() {
        var ch, start, value = '';

        start = index;
        while (index < length) {
            ch = source.charCodeAt(index);
            if (!isXJSIdentifierPart(ch)) {
                break;
            }
            value += source[index++];
        }

        return {
            type: Token.XJSIdentifier,
            value: value,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanXJSEntity() {
        var ch, str = '', start = index, count = 0, code;
        ch = source[index];
        assert(ch === '&', 'Entity must start with an ampersand');
        index++;
        while (index < length && count++ < 10) {
            ch = source[index++];
            if (ch === ';') {
                break;
            }
            str += ch;
        }

        // Well-formed entity (ending was found).
        if (ch === ';') {
            // Numeric entity.
            if (str[0] === '#') {
                if (str[1] === 'x') {
                    code = +('0' + str.substr(1));
                } else {
                    // Removing leading zeros in order to avoid treating as octal in old browsers.
                    code = +str.substr(1).replace(Regex.LeadingZeros, '');
                }

                if (!isNaN(code)) {
                    return String.fromCharCode(code);
                }
            } else if (XHTMLEntities[str]) {
                return XHTMLEntities[str];
            }
        }

        // Treat non-entity sequences as regular text.
        index = start + 1;
        return '&';
    }

    function scanXJSText(stopChars) {
        var ch, str = '', start;
        start = index;
        while (index < length) {
            ch = source[index];
            if (stopChars.indexOf(ch) !== -1) {
                break;
            }
            if (ch === '&') {
                str += scanXJSEntity();
            } else {
                index++;
                if (ch === '\r' && source[index] === '\n') {
                    str += ch;
                    ch = source[index];
                    index++;
                }
                if (isLineTerminator(ch.charCodeAt(0))) {
                    ++lineNumber;
                    lineStart = index;
                }
                str += ch;
            }
        }
        return {
            type: Token.XJSText,
            value: str,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanXJSStringLiteral() {
        var innerToken, quote, start;

        quote = source[index];
        assert((quote === '\'' || quote === '"'),
            'String literal must starts with a quote');

        start = index;
        ++index;

        innerToken = scanXJSText([quote]);

        if (quote !== source[index]) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        ++index;

        innerToken.range = [start, index];

        return innerToken;
    }

    /**
     * Between XJS opening and closing tags (e.g. <foo>HERE</foo>), anything that
     * is not another XJS tag and is not an expression wrapped by {} is text.
     */
    function advanceXJSChild() {
        var ch = source.charCodeAt(index);

        // { (123) and < (60)
        if (ch !== 123 && ch !== 60) {
            return scanXJSText(['<', '{']);
        }

        return scanPunctuator();
    }

    function parseXJSIdentifier() {
        var token, marker = markerCreate();

        if (lookahead.type !== Token.XJSIdentifier) {
            throwUnexpected(lookahead);
        }

        token = lex();
        return markerApply(marker, delegate.createXJSIdentifier(token.value));
    }

    function parseXJSNamespacedName() {
        var namespace, name, marker = markerCreate();

        namespace = parseXJSIdentifier();
        expect(':');
        name = parseXJSIdentifier();

        return markerApply(marker, delegate.createXJSNamespacedName(namespace, name));
    }

    function parseXJSMemberExpression() {
        var marker = markerCreate(),
            expr = parseXJSIdentifier();

        while (match('.')) {
            lex();
            expr = markerApply(marker, delegate.createXJSMemberExpression(expr, parseXJSIdentifier()));
        }

        return expr;
    }

    function parseXJSElementName() {
        if (lookahead2().value === ':') {
            return parseXJSNamespacedName();
        }
        if (lookahead2().value === '.') {
            return parseXJSMemberExpression();
        }

        return parseXJSIdentifier();
    }

    function parseXJSAttributeName() {
        if (lookahead2().value === ':') {
            return parseXJSNamespacedName();
        }

        return parseXJSIdentifier();
    }

    function parseXJSAttributeValue() {
        var value, marker;
        if (match('{')) {
            value = parseXJSExpressionContainer();
            if (value.expression.type === Syntax.XJSEmptyExpression) {
                throwError(
                    value,
                    'XJS attributes must only be assigned a non-empty ' +
                        'expression'
                );
            }
        } else if (match('<')) {
            value = parseXJSElement();
        } else if (lookahead.type === Token.XJSText) {
            marker = markerCreate();
            value = markerApply(marker, delegate.createLiteral(lex()));
        } else {
            throwError({}, Messages.InvalidXJSAttributeValue);
        }
        return value;
    }

    function parseXJSEmptyExpression() {
        var marker = markerCreatePreserveWhitespace();
        while (source.charAt(index) !== '}') {
            index++;
        }
        return markerApply(marker, delegate.createXJSEmptyExpression());
    }

    function parseXJSExpressionContainer() {
        var expression, origInXJSChild, origInXJSTag, marker = markerCreate();

        origInXJSChild = state.inXJSChild;
        origInXJSTag = state.inXJSTag;
        state.inXJSChild = false;
        state.inXJSTag = false;

        expect('{');

        if (match('}')) {
            expression = parseXJSEmptyExpression();
        } else {
            expression = parseExpression();
        }

        state.inXJSChild = origInXJSChild;
        state.inXJSTag = origInXJSTag;

        expect('}');

        return markerApply(marker, delegate.createXJSExpressionContainer(expression));
    }

    function parseXJSSpreadAttribute() {
        var expression, origInXJSChild, origInXJSTag, marker = markerCreate();

        origInXJSChild = state.inXJSChild;
        origInXJSTag = state.inXJSTag;
        state.inXJSChild = false;
        state.inXJSTag = false;

        expect('{');
        expect('...');

        expression = parseAssignmentExpression();

        state.inXJSChild = origInXJSChild;
        state.inXJSTag = origInXJSTag;

        expect('}');

        return markerApply(marker, delegate.createXJSSpreadAttribute(expression));
    }

    function parseXJSAttribute() {
        var name, marker;

        if (match('{')) {
            return parseXJSSpreadAttribute();
        }

        marker = markerCreate();

        name = parseXJSAttributeName();

        // HTML empty attribute
        if (match('=')) {
            lex();
            return markerApply(marker, delegate.createXJSAttribute(name, parseXJSAttributeValue()));
        }

        return markerApply(marker, delegate.createXJSAttribute(name));
    }

    function parseXJSChild() {
        var token, marker;
        if (match('{')) {
            token = parseXJSExpressionContainer();
        } else if (lookahead.type === Token.XJSText) {
            marker = markerCreatePreserveWhitespace();
            token = markerApply(marker, delegate.createLiteral(lex()));
        } else {
            token = parseXJSElement();
        }
        return token;
    }

    function parseXJSClosingElement() {
        var name, origInXJSChild, origInXJSTag, marker = markerCreate();
        origInXJSChild = state.inXJSChild;
        origInXJSTag = state.inXJSTag;
        state.inXJSChild = false;
        state.inXJSTag = true;
        expect('<');
        expect('/');
        name = parseXJSElementName();
        // Because advance() (called by lex() called by expect()) expects there
        // to be a valid token after >, it needs to know whether to look for a
        // standard JS token or an XJS text node
        state.inXJSChild = origInXJSChild;
        state.inXJSTag = origInXJSTag;
        expect('>');
        return markerApply(marker, delegate.createXJSClosingElement(name));
    }

    function parseXJSOpeningElement() {
        var name, attribute, attributes = [], selfClosing = false, origInXJSChild, origInXJSTag, marker = markerCreate();

        origInXJSChild = state.inXJSChild;
        origInXJSTag = state.inXJSTag;
        state.inXJSChild = false;
        state.inXJSTag = true;

        expect('<');

        name = parseXJSElementName();

        while (index < length &&
                lookahead.value !== '/' &&
                lookahead.value !== '>') {
            attributes.push(parseXJSAttribute());
        }

        state.inXJSTag = origInXJSTag;

        if (lookahead.value === '/') {
            expect('/');
            // Because advance() (called by lex() called by expect()) expects
            // there to be a valid token after >, it needs to know whether to
            // look for a standard JS token or an XJS text node
            state.inXJSChild = origInXJSChild;
            expect('>');
            selfClosing = true;
        } else {
            state.inXJSChild = true;
            expect('>');
        }
        return markerApply(marker, delegate.createXJSOpeningElement(name, attributes, selfClosing));
    }

    function parseXJSElement() {
        var openingElement, closingElement = null, children = [], origInXJSChild, origInXJSTag, marker = markerCreate();

        origInXJSChild = state.inXJSChild;
        origInXJSTag = state.inXJSTag;
        openingElement = parseXJSOpeningElement();

        if (!openingElement.selfClosing) {
            while (index < length) {
                state.inXJSChild = false; // Call lookahead2() with inXJSChild = false because </ should not be considered in the child
                if (lookahead.value === '<' && lookahead2().value === '/') {
                    break;
                }
                state.inXJSChild = true;
                children.push(parseXJSChild());
            }
            state.inXJSChild = origInXJSChild;
            state.inXJSTag = origInXJSTag;
            closingElement = parseXJSClosingElement();
            if (getQualifiedXJSName(closingElement.name) !== getQualifiedXJSName(openingElement.name)) {
                throwError({}, Messages.ExpectedXJSClosingTag, getQualifiedXJSName(openingElement.name));
            }
        }

        // When (erroneously) writing two adjacent tags like
        //
        //     var x = <div>one</div><div>two</div>;
        //
        // the default error message is a bit incomprehensible. Since it's
        // rarely (never?) useful to write a less-than sign after an XJS
        // element, we disallow it here in the parser in order to provide a
        // better error message. (In the rare case that the less-than operator
        // was intended, the left tag can be wrapped in parentheses.)
        if (!origInXJSChild && match('<')) {
            throwError(lookahead, Messages.AdjacentXJSElements);
        }

        return markerApply(marker, delegate.createXJSElement(openingElement, closingElement, children));
    }

    function collectToken() {
        var start, loc, token, range, value, entry;

        if (!state.inXJSChild) {
            skipComment();
        }

        start = index;
        loc = {
            start: {
                line: lineNumber,
                column: index - lineStart
            }
        };

        token = extra.advance();
        loc.end = {
            line: lineNumber,
            column: index - lineStart
        };

        if (token.type !== Token.EOF) {
            range = [token.range[0], token.range[1]];
            value = source.slice(token.range[0], token.range[1]);
            entry = {
                type: TokenName[token.type],
                value: value,
                range: range,
                loc: loc
            };
            if (token.regex) {
                entry.regex = {
                    pattern: token.regex.pattern,
                    flags: token.regex.flags
                };
            }
            extra.tokens.push(entry);
        }

        return token;
    }

    function collectRegex() {
        var pos, loc, regex, token;

        skipComment();

        pos = index;
        loc = {
            start: {
                line: lineNumber,
                column: index - lineStart
            }
        };

        regex = extra.scanRegExp();
        loc.end = {
            line: lineNumber,
            column: index - lineStart
        };

        if (!extra.tokenize) {
            // Pop the previous token, which is likely '/' or '/='
            if (extra.tokens.length > 0) {
                token = extra.tokens[extra.tokens.length - 1];
                if (token.range[0] === pos && token.type === 'Punctuator') {
                    if (token.value === '/' || token.value === '/=') {
                        extra.tokens.pop();
                    }
                }
            }

            extra.tokens.push({
                type: 'RegularExpression',
                value: regex.literal,
                regex: regex.regex,
                range: [pos, index],
                loc: loc
            });
        }

        return regex;
    }

    function filterTokenLocation() {
        var i, entry, token, tokens = [];

        for (i = 0; i < extra.tokens.length; ++i) {
            entry = extra.tokens[i];
            token = {
                type: entry.type,
                value: entry.value
            };
            if (entry.regex) {
                token.regex = {
                    pattern: entry.regex.pattern,
                    flags: entry.regex.flags
                };
            }
            if (extra.range) {
                token.range = entry.range;
            }
            if (extra.loc) {
                token.loc = entry.loc;
            }
            tokens.push(token);
        }

        extra.tokens = tokens;
    }

    function patch() {
        if (extra.comments) {
            extra.skipComment = skipComment;
            skipComment = scanComment;
        }

        if (typeof extra.tokens !== 'undefined') {
            extra.advance = advance;
            extra.scanRegExp = scanRegExp;

            advance = collectToken;
            scanRegExp = collectRegex;
        }
    }

    function unpatch() {
        if (typeof extra.skipComment === 'function') {
            skipComment = extra.skipComment;
        }

        if (typeof extra.scanRegExp === 'function') {
            advance = extra.advance;
            scanRegExp = extra.scanRegExp;
        }
    }

    // This is used to modify the delegate.

    function extend(object, properties) {
        var entry, result = {};

        for (entry in object) {
            if (object.hasOwnProperty(entry)) {
                result[entry] = object[entry];
            }
        }

        for (entry in properties) {
            if (properties.hasOwnProperty(entry)) {
                result[entry] = properties[entry];
            }
        }

        return result;
    }

    function tokenize(code, options) {
        var toString,
            token,
            tokens;

        toString = String;
        if (typeof code !== 'string' && !(code instanceof String)) {
            code = toString(code);
        }

        delegate = SyntaxTreeDelegate;
        source = code;
        index = 0;
        lineNumber = (source.length > 0) ? 1 : 0;
        lineStart = 0;
        length = source.length;
        lookahead = null;
        state = {
            allowKeyword: true,
            allowIn: true,
            labelSet: {},
            inFunctionBody: false,
            inIteration: false,
            inSwitch: false,
            lastCommentStart: -1
        };

        extra = {};

        // Options matching.
        options = options || {};

        // Of course we collect tokens here.
        options.tokens = true;
        extra.tokens = [];
        extra.tokenize = true;
        // The following two fields are necessary to compute the Regex tokens.
        extra.openParenToken = -1;
        extra.openCurlyToken = -1;

        extra.range = (typeof options.range === 'boolean') && options.range;
        extra.loc = (typeof options.loc === 'boolean') && options.loc;

        if (typeof options.comment === 'boolean' && options.comment) {
            extra.comments = [];
        }
        if (typeof options.tolerant === 'boolean' && options.tolerant) {
            extra.errors = [];
        }

        if (length > 0) {
            if (typeof source[0] === 'undefined') {
                // Try first to convert to a string. This is good as fast path
                // for old IE which understands string indexing for string
                // literals only and not for string object.
                if (code instanceof String) {
                    source = code.valueOf();
                }
            }
        }

        patch();

        try {
            peek();
            if (lookahead.type === Token.EOF) {
                return extra.tokens;
            }

            token = lex();
            while (lookahead.type !== Token.EOF) {
                try {
                    token = lex();
                } catch (lexError) {
                    token = lookahead;
                    if (extra.errors) {
                        extra.errors.push(lexError);
                        // We have to break on the first error
                        // to avoid infinite loops.
                        break;
                    } else {
                        throw lexError;
                    }
                }
            }

            filterTokenLocation();
            tokens = extra.tokens;
            if (typeof extra.comments !== 'undefined') {
                tokens.comments = extra.comments;
            }
            if (typeof extra.errors !== 'undefined') {
                tokens.errors = extra.errors;
            }
        } catch (e) {
            throw e;
        } finally {
            unpatch();
            extra = {};
        }
        return tokens;
    }

    function parse(code, options) {
        var program, toString;

        toString = String;
        if (typeof code !== 'string' && !(code instanceof String)) {
            code = toString(code);
        }

        delegate = SyntaxTreeDelegate;
        source = code;
        index = 0;
        lineNumber = (source.length > 0) ? 1 : 0;
        lineStart = 0;
        length = source.length;
        lookahead = null;
        state = {
            allowKeyword: false,
            allowIn: true,
            labelSet: {},
            parenthesizedCount: 0,
            inFunctionBody: false,
            inIteration: false,
            inSwitch: false,
            inXJSChild: false,
            inXJSTag: false,
            lastCommentStart: -1,
            yieldAllowed: false,
            awaitAllowed: false
        };

        extra = {};
        if (typeof options !== 'undefined') {
            extra.range = (typeof options.range === 'boolean') && options.range;
            extra.loc = (typeof options.loc === 'boolean') && options.loc;
            extra.attachComment = (typeof options.attachComment === 'boolean') && options.attachComment;

            if (extra.loc && options.source !== null && options.source !== undefined) {
                delegate = extend(delegate, {
                    'postProcess': function (node) {
                        node.loc.source = toString(options.source);
                        return node;
                    }
                });
            }

            if (typeof options.tokens === 'boolean' && options.tokens) {
                extra.tokens = [];
            }
            if (typeof options.comment === 'boolean' && options.comment) {
                extra.comments = [];
            }
            if (typeof options.tolerant === 'boolean' && options.tolerant) {
                extra.errors = [];
            }
            if (extra.attachComment) {
                extra.range = true;
                extra.comments = [];
                extra.bottomRightStack = [];
                extra.trailingComments = [];
                extra.leadingComments = [];
            }
        }

        if (length > 0) {
            if (typeof source[0] === 'undefined') {
                // Try first to convert to a string. This is good as fast path
                // for old IE which understands string indexing for string
                // literals only and not for string object.
                if (code instanceof String) {
                    source = code.valueOf();
                }
            }
        }

        patch();
        try {
            program = parseProgram();
            if (typeof extra.comments !== 'undefined') {
                program.comments = extra.comments;
            }
            if (typeof extra.tokens !== 'undefined') {
                filterTokenLocation();
                program.tokens = extra.tokens;
            }
            if (typeof extra.errors !== 'undefined') {
                program.errors = extra.errors;
            }
        } catch (e) {
            throw e;
        } finally {
            unpatch();
            extra = {};
        }

        return program;
    }

    // Sync with *.json manifests.
    exports.version = '7001.0001.0000-dev-harmony-fb';

    exports.tokenize = tokenize;

    exports.parse = parse;

    // Deep copy.
    exports.Syntax = (function () {
        var name, types = {};

        if (typeof Object.create === 'function') {
            types = Object.create(null);
        }

        for (name in Syntax) {
            if (Syntax.hasOwnProperty(name)) {
                types[name] = Syntax[name];
            }
        }

        if (typeof Object.freeze === 'function') {
            Object.freeze(types);
        }

        return types;
    }());

}));
/* vim: set sw=4 ts=4 et tw=80 : */

},{}],82:[function(require,module,exports){

},{}],83:[function(require,module,exports){
/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
 * @license  MIT
 */

var base64 = require('base64-js')
var ieee754 = require('ieee754')
var isArray = require('is-array')

exports.Buffer = Buffer
exports.SlowBuffer = SlowBuffer
exports.INSPECT_MAX_BYTES = 50
Buffer.poolSize = 8192 // not used by this implementation

var kMaxLength = 0x3fffffff
var rootParent = {}

/**
 * If `Buffer.TYPED_ARRAY_SUPPORT`:
 *   === true    Use Uint8Array implementation (fastest)
 *   === false   Use Object implementation (most compatible, even IE6)
 *
 * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
 * Opera 11.6+, iOS 4.2+.
 *
 * Note:
 *
 * - Implementation must support adding new properties to `Uint8Array` instances.
 *   Firefox 4-29 lacked support, fixed in Firefox 30+.
 *   See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
 *
 *  - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
 *
 *  - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
 *    incorrect length in some situations.
 *
 * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they will
 * get the Object implementation, which is slower but will work correctly.
 */
Buffer.TYPED_ARRAY_SUPPORT = (function () {
  try {
    var buf = new ArrayBuffer(0)
    var arr = new Uint8Array(buf)
    arr.foo = function () { return 42 }
    return 42 === arr.foo() && // typed array instances can be augmented
        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
        new Uint8Array(1).subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
  } catch (e) {
    return false
  }
})()

/**
 * Class: Buffer
 * =============
 *
 * The Buffer constructor returns instances of `Uint8Array` that are augmented
 * with function properties for all the node `Buffer` API functions. We use
 * `Uint8Array` so that square bracket notation works as expected -- it returns
 * a single octet.
 *
 * By augmenting the instances, we can avoid modifying the `Uint8Array`
 * prototype.
 */
function Buffer (subject, encoding, noZero) {
  if (!(this instanceof Buffer))
    return new Buffer(subject, encoding, noZero)

  var type = typeof subject

  // Find the length
  var length
  if (type === 'number')
    length = subject > 0 ? subject >>> 0 : 0
  else if (type === 'string') {
    length = Buffer.byteLength(subject, encoding)
  } else if (type === 'object' && subject !== null) { // assume object is array-like
    if (subject.type === 'Buffer' && isArray(subject.data))
      subject = subject.data
    length = +subject.length > 0 ? Math.floor(+subject.length) : 0
  } else
    throw new TypeError('must start with number, buffer, array or string')

  if (length > kMaxLength)
    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
      'size: 0x' + kMaxLength.toString(16) + ' bytes')

  var buf
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    // Preferred: Return an augmented `Uint8Array` instance for best performance
    buf = Buffer._augment(new Uint8Array(length))
  } else {
    // Fallback: Return THIS instance of Buffer (created by `new`)
    buf = this
    buf.length = length
    buf._isBuffer = true
  }

  var i
  if (Buffer.TYPED_ARRAY_SUPPORT && typeof subject.byteLength === 'number') {
    // Speed optimization -- use set if we're copying from a typed array
    buf._set(subject)
  } else if (isArrayish(subject)) {
    // Treat array-ish objects as a byte array
    if (Buffer.isBuffer(subject)) {
      for (i = 0; i < length; i++)
        buf[i] = subject.readUInt8(i)
    } else {
      for (i = 0; i < length; i++)
        buf[i] = ((subject[i] % 256) + 256) % 256
    }
  } else if (type === 'string') {
    buf.write(subject, 0, encoding)
  } else if (type === 'number' && !Buffer.TYPED_ARRAY_SUPPORT && !noZero) {
    for (i = 0; i < length; i++) {
      buf[i] = 0
    }
  }

  if (length > 0 && length <= Buffer.poolSize)
    buf.parent = rootParent

  return buf
}

function SlowBuffer(subject, encoding, noZero) {
  if (!(this instanceof SlowBuffer))
    return new SlowBuffer(subject, encoding, noZero)

  var buf = new Buffer(subject, encoding, noZero)
  delete buf.parent
  return buf
}

Buffer.isBuffer = function (b) {
  return !!(b != null && b._isBuffer)
}

Buffer.compare = function (a, b) {
  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b))
    throw new TypeError('Arguments must be Buffers')

  var x = a.length
  var y = b.length
  for (var i = 0, len = Math.min(x, y); i < len && a[i] === b[i]; i++) {}
  if (i !== len) {
    x = a[i]
    y = b[i]
  }
  if (x < y) return -1
  if (y < x) return 1
  return 0
}

Buffer.isEncoding = function (encoding) {
  switch (String(encoding).toLowerCase()) {
    case 'hex':
    case 'utf8':
    case 'utf-8':
    case 'ascii':
    case 'binary':
    case 'base64':
    case 'raw':
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      return true
    default:
      return false
  }
}

Buffer.concat = function (list, totalLength) {
  if (!isArray(list)) throw new TypeError('Usage: Buffer.concat(list[, length])')

  if (list.length === 0) {
    return new Buffer(0)
  } else if (list.length === 1) {
    return list[0]
  }

  var i
  if (totalLength === undefined) {
    totalLength = 0
    for (i = 0; i < list.length; i++) {
      totalLength += list[i].length
    }
  }

  var buf = new Buffer(totalLength)
  var pos = 0
  for (i = 0; i < list.length; i++) {
    var item = list[i]
    item.copy(buf, pos)
    pos += item.length
  }
  return buf
}

Buffer.byteLength = function (str, encoding) {
  var ret
  str = str + ''
  switch (encoding || 'utf8') {
    case 'ascii':
    case 'binary':
    case 'raw':
      ret = str.length
      break
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      ret = str.length * 2
      break
    case 'hex':
      ret = str.length >>> 1
      break
    case 'utf8':
    case 'utf-8':
      ret = utf8ToBytes(str).length
      break
    case 'base64':
      ret = base64ToBytes(str).length
      break
    default:
      ret = str.length
  }
  return ret
}

// pre-set for values that may exist in the future
Buffer.prototype.length = undefined
Buffer.prototype.parent = undefined

// toString(encoding, start=0, end=buffer.length)
Buffer.prototype.toString = function (encoding, start, end) {
  var loweredCase = false

  start = start >>> 0
  end = end === undefined || end === Infinity ? this.length : end >>> 0

  if (!encoding) encoding = 'utf8'
  if (start < 0) start = 0
  if (end > this.length) end = this.length
  if (end <= start) return ''

  while (true) {
    switch (encoding) {
      case 'hex':
        return hexSlice(this, start, end)

      case 'utf8':
      case 'utf-8':
        return utf8Slice(this, start, end)

      case 'ascii':
        return asciiSlice(this, start, end)

      case 'binary':
        return binarySlice(this, start, end)

      case 'base64':
        return base64Slice(this, start, end)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return utf16leSlice(this, start, end)

      default:
        if (loweredCase)
          throw new TypeError('Unknown encoding: ' + encoding)
        encoding = (encoding + '').toLowerCase()
        loweredCase = true
    }
  }
}

Buffer.prototype.equals = function (b) {
  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
  return Buffer.compare(this, b) === 0
}

Buffer.prototype.inspect = function () {
  var str = ''
  var max = exports.INSPECT_MAX_BYTES
  if (this.length > 0) {
    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
    if (this.length > max)
      str += ' ... '
  }
  return '<Buffer ' + str + '>'
}

Buffer.prototype.compare = function (b) {
  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
  return Buffer.compare(this, b)
}

// `get` will be removed in Node 0.13+
Buffer.prototype.get = function (offset) {
  console.log('.get() is deprecated. Access using array indexes instead.')
  return this.readUInt8(offset)
}

// `set` will be removed in Node 0.13+
Buffer.prototype.set = function (v, offset) {
  console.log('.set() is deprecated. Access using array indexes instead.')
  return this.writeUInt8(v, offset)
}

function hexWrite (buf, string, offset, length) {
  offset = Number(offset) || 0
  var remaining = buf.length - offset
  if (!length) {
    length = remaining
  } else {
    length = Number(length)
    if (length > remaining) {
      length = remaining
    }
  }

  // must be an even number of digits
  var strLen = string.length
  if (strLen % 2 !== 0) throw new Error('Invalid hex string')

  if (length > strLen / 2) {
    length = strLen / 2
  }
  for (var i = 0; i < length; i++) {
    var byte = parseInt(string.substr(i * 2, 2), 16)
    if (isNaN(byte)) throw new Error('Invalid hex string')
    buf[offset + i] = byte
  }
  return i
}

function utf8Write (buf, string, offset, length) {
  var charsWritten = blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
  return charsWritten
}

function asciiWrite (buf, string, offset, length) {
  var charsWritten = blitBuffer(asciiToBytes(string), buf, offset, length)
  return charsWritten
}

function binaryWrite (buf, string, offset, length) {
  return asciiWrite(buf, string, offset, length)
}

function base64Write (buf, string, offset, length) {
  var charsWritten = blitBuffer(base64ToBytes(string), buf, offset, length)
  return charsWritten
}

function utf16leWrite (buf, string, offset, length) {
  var charsWritten = blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length, 2)
  return charsWritten
}

Buffer.prototype.write = function (string, offset, length, encoding) {
  // Support both (string, offset, length, encoding)
  // and the legacy (string, encoding, offset, length)
  if (isFinite(offset)) {
    if (!isFinite(length)) {
      encoding = length
      length = undefined
    }
  } else {  // legacy
    var swap = encoding
    encoding = offset
    offset = length
    length = swap
  }

  offset = Number(offset) || 0

  if (length < 0 || offset < 0 || offset > this.length)
    throw new RangeError('attempt to write outside buffer bounds');

  var remaining = this.length - offset
  if (!length) {
    length = remaining
  } else {
    length = Number(length)
    if (length > remaining) {
      length = remaining
    }
  }
  encoding = String(encoding || 'utf8').toLowerCase()

  var ret
  switch (encoding) {
    case 'hex':
      ret = hexWrite(this, string, offset, length)
      break
    case 'utf8':
    case 'utf-8':
      ret = utf8Write(this, string, offset, length)
      break
    case 'ascii':
      ret = asciiWrite(this, string, offset, length)
      break
    case 'binary':
      ret = binaryWrite(this, string, offset, length)
      break
    case 'base64':
      ret = base64Write(this, string, offset, length)
      break
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      ret = utf16leWrite(this, string, offset, length)
      break
    default:
      throw new TypeError('Unknown encoding: ' + encoding)
  }
  return ret
}

Buffer.prototype.toJSON = function () {
  return {
    type: 'Buffer',
    data: Array.prototype.slice.call(this._arr || this, 0)
  }
}

function base64Slice (buf, start, end) {
  if (start === 0 && end === buf.length) {
    return base64.fromByteArray(buf)
  } else {
    return base64.fromByteArray(buf.slice(start, end))
  }
}

function utf8Slice (buf, start, end) {
  var res = ''
  var tmp = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; i++) {
    if (buf[i] <= 0x7F) {
      res += decodeUtf8Char(tmp) + String.fromCharCode(buf[i])
      tmp = ''
    } else {
      tmp += '%' + buf[i].toString(16)
    }
  }

  return res + decodeUtf8Char(tmp)
}

function asciiSlice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; i++) {
    ret += String.fromCharCode(buf[i] & 0x7F)
  }
  return ret
}

function binarySlice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; i++) {
    ret += String.fromCharCode(buf[i])
  }
  return ret
}

function hexSlice (buf, start, end) {
  var len = buf.length

  if (!start || start < 0) start = 0
  if (!end || end < 0 || end > len) end = len

  var out = ''
  for (var i = start; i < end; i++) {
    out += toHex(buf[i])
  }
  return out
}

function utf16leSlice (buf, start, end) {
  var bytes = buf.slice(start, end)
  var res = ''
  for (var i = 0; i < bytes.length; i += 2) {
    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)
  }
  return res
}

Buffer.prototype.slice = function (start, end) {
  var len = this.length
  start = ~~start
  end = end === undefined ? len : ~~end

  if (start < 0) {
    start += len;
    if (start < 0)
      start = 0
  } else if (start > len) {
    start = len
  }

  if (end < 0) {
    end += len
    if (end < 0)
      end = 0
  } else if (end > len) {
    end = len
  }

  if (end < start)
    end = start

  var newBuf
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    newBuf = Buffer._augment(this.subarray(start, end))
  } else {
    var sliceLen = end - start
    newBuf = new Buffer(sliceLen, undefined, true)
    for (var i = 0; i < sliceLen; i++) {
      newBuf[i] = this[i + start]
    }
  }

  if (newBuf.length)
    newBuf.parent = this.parent || this

  return newBuf
}

/*
 * Need to make sure that buffer isn't trying to write out of bounds.
 */
function checkOffset (offset, ext, length) {
  if ((offset % 1) !== 0 || offset < 0)
    throw new RangeError('offset is not uint')
  if (offset + ext > length)
    throw new RangeError('Trying to access beyond buffer length')
}

Buffer.prototype.readUIntLE = function (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert)
    checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100))
    val += this[offset + i] * mul

  return val
}

Buffer.prototype.readUIntBE = function (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert)
    checkOffset(offset, byteLength, this.length)

  var val = this[offset + --byteLength]
  var mul = 1
  while (byteLength > 0 && (mul *= 0x100))
    val += this[offset + --byteLength] * mul;

  return val
}

Buffer.prototype.readUInt8 = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 1, this.length)
  return this[offset]
}

Buffer.prototype.readUInt16LE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 2, this.length)
  return this[offset] | (this[offset + 1] << 8)
}

Buffer.prototype.readUInt16BE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 2, this.length)
  return (this[offset] << 8) | this[offset + 1]
}

Buffer.prototype.readUInt32LE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 4, this.length)

  return ((this[offset]) |
      (this[offset + 1] << 8) |
      (this[offset + 2] << 16)) +
      (this[offset + 3] * 0x1000000)
}

Buffer.prototype.readUInt32BE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 4, this.length)

  return (this[offset] * 0x1000000) +
      ((this[offset + 1] << 16) |
      (this[offset + 2] << 8) |
      this[offset + 3])
}

Buffer.prototype.readIntLE = function (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert)
    checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100))
    val += this[offset + i] * mul
  mul *= 0x80

  if (val >= mul)
    val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readIntBE = function (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert)
    checkOffset(offset, byteLength, this.length)

  var i = byteLength
  var mul = 1
  var val = this[offset + --i]
  while (i > 0 && (mul *= 0x100))
    val += this[offset + --i] * mul
  mul *= 0x80

  if (val >= mul)
    val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readInt8 = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 1, this.length)
  if (!(this[offset] & 0x80))
    return (this[offset])
  return ((0xff - this[offset] + 1) * -1)
}

Buffer.prototype.readInt16LE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 2, this.length)
  var val = this[offset] | (this[offset + 1] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt16BE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 2, this.length)
  var val = this[offset + 1] | (this[offset] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt32LE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 4, this.length)

  return (this[offset]) |
      (this[offset + 1] << 8) |
      (this[offset + 2] << 16) |
      (this[offset + 3] << 24)
}

Buffer.prototype.readInt32BE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 4, this.length)

  return (this[offset] << 24) |
      (this[offset + 1] << 16) |
      (this[offset + 2] << 8) |
      (this[offset + 3])
}

Buffer.prototype.readFloatLE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, true, 23, 4)
}

Buffer.prototype.readFloatBE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, false, 23, 4)
}

Buffer.prototype.readDoubleLE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, true, 52, 8)
}

Buffer.prototype.readDoubleBE = function (offset, noAssert) {
  if (!noAssert)
    checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, false, 52, 8)
}

function checkInt (buf, value, offset, ext, max, min) {
  if (!Buffer.isBuffer(buf)) throw new TypeError('buffer must be a Buffer instance')
  if (value > max || value < min) throw new RangeError('value is out of bounds')
  if (offset + ext > buf.length) throw new RangeError('index out of range')
}

Buffer.prototype.writeUIntLE = function (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert)
    checkInt(this, value, offset, byteLength, Math.pow(2, 8 * byteLength), 0)

  var mul = 1
  var i = 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100))
    this[offset + i] = (value / mul) >>> 0 & 0xFF

  return offset + byteLength
}

Buffer.prototype.writeUIntBE = function (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert)
    checkInt(this, value, offset, byteLength, Math.pow(2, 8 * byteLength), 0)

  var i = byteLength - 1
  var mul = 1
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100))
    this[offset + i] = (value / mul) >>> 0 & 0xFF

  return offset + byteLength
}

Buffer.prototype.writeUInt8 = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 1, 0xff, 0)
  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
  this[offset] = value
  return offset + 1
}

function objectWriteUInt16 (buf, value, offset, littleEndian) {
  if (value < 0) value = 0xffff + value + 1
  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; i++) {
    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
      (littleEndian ? i : 1 - i) * 8
  }
}

Buffer.prototype.writeUInt16LE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 2, 0xffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = value
    this[offset + 1] = (value >>> 8)
  } else objectWriteUInt16(this, value, offset, true)
  return offset + 2
}

Buffer.prototype.writeUInt16BE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 2, 0xffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 8)
    this[offset + 1] = value
  } else objectWriteUInt16(this, value, offset, false)
  return offset + 2
}

function objectWriteUInt32 (buf, value, offset, littleEndian) {
  if (value < 0) value = 0xffffffff + value + 1
  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; i++) {
    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
  }
}

Buffer.prototype.writeUInt32LE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 4, 0xffffffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset + 3] = (value >>> 24)
    this[offset + 2] = (value >>> 16)
    this[offset + 1] = (value >>> 8)
    this[offset] = value
  } else objectWriteUInt32(this, value, offset, true)
  return offset + 4
}

Buffer.prototype.writeUInt32BE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 4, 0xffffffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 24)
    this[offset + 1] = (value >>> 16)
    this[offset + 2] = (value >>> 8)
    this[offset + 3] = value
  } else objectWriteUInt32(this, value, offset, false)
  return offset + 4
}

Buffer.prototype.writeIntLE = function (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    checkInt(this,
             value,
             offset,
             byteLength,
             Math.pow(2, 8 * byteLength - 1) - 1,
             -Math.pow(2, 8 * byteLength - 1))
  }

  var i = 0
  var mul = 1
  var sub = value < 0 ? 1 : 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100))
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF

  return offset + byteLength
}

Buffer.prototype.writeIntBE = function (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    checkInt(this,
             value,
             offset,
             byteLength,
             Math.pow(2, 8 * byteLength - 1) - 1,
             -Math.pow(2, 8 * byteLength - 1))
  }

  var i = byteLength - 1
  var mul = 1
  var sub = value < 0 ? 1 : 0
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100))
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF

  return offset + byteLength
}

Buffer.prototype.writeInt8 = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 1, 0x7f, -0x80)
  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
  if (value < 0) value = 0xff + value + 1
  this[offset] = value
  return offset + 1
}

Buffer.prototype.writeInt16LE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = value
    this[offset + 1] = (value >>> 8)
  } else objectWriteUInt16(this, value, offset, true)
  return offset + 2
}

Buffer.prototype.writeInt16BE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 8)
    this[offset + 1] = value
  } else objectWriteUInt16(this, value, offset, false)
  return offset + 2
}

Buffer.prototype.writeInt32LE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = value
    this[offset + 1] = (value >>> 8)
    this[offset + 2] = (value >>> 16)
    this[offset + 3] = (value >>> 24)
  } else objectWriteUInt32(this, value, offset, true)
  return offset + 4
}

Buffer.prototype.writeInt32BE = function (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert)
    checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (value < 0) value = 0xffffffff + value + 1
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 24)
    this[offset + 1] = (value >>> 16)
    this[offset + 2] = (value >>> 8)
    this[offset + 3] = value
  } else objectWriteUInt32(this, value, offset, false)
  return offset + 4
}

function checkIEEE754 (buf, value, offset, ext, max, min) {
  if (value > max || value < min) throw new RangeError('value is out of bounds')
  if (offset + ext > buf.length) throw new RangeError('index out of range')
  if (offset < 0) throw new RangeError('index out of range')
}

function writeFloat (buf, value, offset, littleEndian, noAssert) {
  if (!noAssert)
    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
  ieee754.write(buf, value, offset, littleEndian, 23, 4)
  return offset + 4
}

Buffer.prototype.writeFloatLE = function (value, offset, noAssert) {
  return writeFloat(this, value, offset, true, noAssert)
}

Buffer.prototype.writeFloatBE = function (value, offset, noAssert) {
  return writeFloat(this, value, offset, false, noAssert)
}

function writeDouble (buf, value, offset, littleEndian, noAssert) {
  if (!noAssert)
    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
  ieee754.write(buf, value, offset, littleEndian, 52, 8)
  return offset + 8
}

Buffer.prototype.writeDoubleLE = function (value, offset, noAssert) {
  return writeDouble(this, value, offset, true, noAssert)
}

Buffer.prototype.writeDoubleBE = function (value, offset, noAssert) {
  return writeDouble(this, value, offset, false, noAssert)
}

// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function (target, target_start, start, end) {
  var source = this

  if (!start) start = 0
  if (!end && end !== 0) end = this.length
  if (target_start >= target.length) target_start = target.length
  if (!target_start) target_start = 0
  if (end > 0 && end < start) end = start

  // Copy 0 bytes; we're done
  if (end === start) return 0
  if (target.length === 0 || source.length === 0) return 0

  // Fatal error conditions
  if (target_start < 0)
    throw new RangeError('targetStart out of bounds')
  if (start < 0 || start >= source.length) throw new RangeError('sourceStart out of bounds')
  if (end < 0) throw new RangeError('sourceEnd out of bounds')

  // Are we oob?
  if (end > this.length)
    end = this.length
  if (target.length - target_start < end - start)
    end = target.length - target_start + start

  var len = end - start

  if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
    for (var i = 0; i < len; i++) {
      target[i + target_start] = this[i + start]
    }
  } else {
    target._set(this.subarray(start, start + len), target_start)
  }

  return len
}

// fill(value, start=0, end=buffer.length)
Buffer.prototype.fill = function (value, start, end) {
  if (!value) value = 0
  if (!start) start = 0
  if (!end) end = this.length

  if (end < start) throw new RangeError('end < start')

  // Fill 0 bytes; we're done
  if (end === start) return
  if (this.length === 0) return

  if (start < 0 || start >= this.length) throw new RangeError('start out of bounds')
  if (end < 0 || end > this.length) throw new RangeError('end out of bounds')

  var i
  if (typeof value === 'number') {
    for (i = start; i < end; i++) {
      this[i] = value
    }
  } else {
    var bytes = utf8ToBytes(value.toString())
    var len = bytes.length
    for (i = start; i < end; i++) {
      this[i] = bytes[i % len]
    }
  }

  return this
}

/**
 * Creates a new `ArrayBuffer` with the *copied* memory of the buffer instance.
 * Added in Node 0.12. Only available in browsers that support ArrayBuffer.
 */
Buffer.prototype.toArrayBuffer = function () {
  if (typeof Uint8Array !== 'undefined') {
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      return (new Buffer(this)).buffer
    } else {
      var buf = new Uint8Array(this.length)
      for (var i = 0, len = buf.length; i < len; i += 1) {
        buf[i] = this[i]
      }
      return buf.buffer
    }
  } else {
    throw new TypeError('Buffer.toArrayBuffer not supported in this browser')
  }
}

// HELPER FUNCTIONS
// ================

var BP = Buffer.prototype

/**
 * Augment a Uint8Array *instance* (not the Uint8Array class!) with Buffer methods
 */
Buffer._augment = function (arr) {
  arr.constructor = Buffer
  arr._isBuffer = true

  // save reference to original Uint8Array get/set methods before overwriting
  arr._get = arr.get
  arr._set = arr.set

  // deprecated, will be removed in node 0.13+
  arr.get = BP.get
  arr.set = BP.set

  arr.write = BP.write
  arr.toString = BP.toString
  arr.toLocaleString = BP.toString
  arr.toJSON = BP.toJSON
  arr.equals = BP.equals
  arr.compare = BP.compare
  arr.copy = BP.copy
  arr.slice = BP.slice
  arr.readUIntLE = BP.readUIntLE
  arr.readUIntBE = BP.readUIntBE
  arr.readUInt8 = BP.readUInt8
  arr.readUInt16LE = BP.readUInt16LE
  arr.readUInt16BE = BP.readUInt16BE
  arr.readUInt32LE = BP.readUInt32LE
  arr.readUInt32BE = BP.readUInt32BE
  arr.readIntLE = BP.readIntLE
  arr.readIntBE = BP.readIntBE
  arr.readInt8 = BP.readInt8
  arr.readInt16LE = BP.readInt16LE
  arr.readInt16BE = BP.readInt16BE
  arr.readInt32LE = BP.readInt32LE
  arr.readInt32BE = BP.readInt32BE
  arr.readFloatLE = BP.readFloatLE
  arr.readFloatBE = BP.readFloatBE
  arr.readDoubleLE = BP.readDoubleLE
  arr.readDoubleBE = BP.readDoubleBE
  arr.writeUInt8 = BP.writeUInt8
  arr.writeUIntLE = BP.writeUIntLE
  arr.writeUIntBE = BP.writeUIntBE
  arr.writeUInt16LE = BP.writeUInt16LE
  arr.writeUInt16BE = BP.writeUInt16BE
  arr.writeUInt32LE = BP.writeUInt32LE
  arr.writeUInt32BE = BP.writeUInt32BE
  arr.writeIntLE = BP.writeIntLE
  arr.writeIntBE = BP.writeIntBE
  arr.writeInt8 = BP.writeInt8
  arr.writeInt16LE = BP.writeInt16LE
  arr.writeInt16BE = BP.writeInt16BE
  arr.writeInt32LE = BP.writeInt32LE
  arr.writeInt32BE = BP.writeInt32BE
  arr.writeFloatLE = BP.writeFloatLE
  arr.writeFloatBE = BP.writeFloatBE
  arr.writeDoubleLE = BP.writeDoubleLE
  arr.writeDoubleBE = BP.writeDoubleBE
  arr.fill = BP.fill
  arr.inspect = BP.inspect
  arr.toArrayBuffer = BP.toArrayBuffer

  return arr
}

var INVALID_BASE64_RE = /[^+\/0-9A-z\-]/g

function base64clean (str) {
  // Node strips out invalid characters like \n and \t from the string, base64-js does not
  str = stringtrim(str).replace(INVALID_BASE64_RE, '')
  // Node converts strings with length < 2 to ''
  if (str.length < 2) return ''
  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
  while (str.length % 4 !== 0) {
    str = str + '='
  }
  return str
}

function stringtrim (str) {
  if (str.trim) return str.trim()
  return str.replace(/^\s+|\s+$/g, '')
}

function isArrayish (subject) {
  return isArray(subject) || Buffer.isBuffer(subject) ||
      subject && typeof subject === 'object' &&
      typeof subject.length === 'number'
}

function toHex (n) {
  if (n < 16) return '0' + n.toString(16)
  return n.toString(16)
}

function utf8ToBytes(string, units) {
  var codePoint, length = string.length
  var leadSurrogate = null
  units = units || Infinity
  var bytes = []
  var i = 0

  for (; i<length; i++) {
    codePoint = string.charCodeAt(i)

    // is surrogate component
    if (codePoint > 0xD7FF && codePoint < 0xE000) {

      // last char was a lead
      if (leadSurrogate) {

        // 2 leads in a row
        if (codePoint < 0xDC00) {
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          leadSurrogate = codePoint
          continue
        }

        // valid surrogate pair
        else {
          codePoint = leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00 | 0x10000
          leadSurrogate = null
        }
      }

      // no lead yet
      else {

        // unexpected trail
        if (codePoint > 0xDBFF) {
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        }

        // unpaired lead
        else if (i + 1 === length) {
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        }

        // valid lead
        else {
          leadSurrogate = codePoint
          continue
        }
      }
    }

    // valid bmp char, but last char was a lead
    else if (leadSurrogate) {
      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
      leadSurrogate = null
    }

    // encode utf8
    if (codePoint < 0x80) {
      if ((units -= 1) < 0) break
      bytes.push(codePoint)
    }
    else if (codePoint < 0x800) {
      if ((units -= 2) < 0) break
      bytes.push(
        codePoint >> 0x6 | 0xC0,
        codePoint & 0x3F | 0x80
      );
    }
    else if (codePoint < 0x10000) {
      if ((units -= 3) < 0) break
      bytes.push(
        codePoint >> 0xC | 0xE0,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      );
    }
    else if (codePoint < 0x200000) {
      if ((units -= 4) < 0) break
      bytes.push(
        codePoint >> 0x12 | 0xF0,
        codePoint >> 0xC & 0x3F | 0x80,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      );
    }
    else {
      throw new Error('Invalid code point')
    }
  }

  return bytes
}

function asciiToBytes (str) {
  var byteArray = []
  for (var i = 0; i < str.length; i++) {
    // Node's code seems to be doing this and not & 0x7F..
    byteArray.push(str.charCodeAt(i) & 0xFF)
  }
  return byteArray
}

function utf16leToBytes (str, units) {
  var c, hi, lo
  var byteArray = []
  for (var i = 0; i < str.length; i++) {

    if ((units -= 2) < 0) break

    c = str.charCodeAt(i)
    hi = c >> 8
    lo = c % 256
    byteArray.push(lo)
    byteArray.push(hi)
  }

  return byteArray
}

function base64ToBytes (str) {
  return base64.toByteArray(base64clean(str))
}

function blitBuffer (src, dst, offset, length, unitSize) {
  if (unitSize) length -= length % unitSize;
  for (var i = 0; i < length; i++) {
    if ((i + offset >= dst.length) || (i >= src.length))
      break
    dst[i + offset] = src[i]
  }
  return i
}

function decodeUtf8Char (str) {
  try {
    return decodeURIComponent(str)
  } catch (err) {
    return String.fromCharCode(0xFFFD) // UTF 8 invalid char
  }
}

},{"base64-js":84,"ieee754":85,"is-array":86}],84:[function(require,module,exports){
var lookup = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';

;(function (exports) {
	'use strict';

  var Arr = (typeof Uint8Array !== 'undefined')
    ? Uint8Array
    : Array

	var PLUS   = '+'.charCodeAt(0)
	var SLASH  = '/'.charCodeAt(0)
	var NUMBER = '0'.charCodeAt(0)
	var LOWER  = 'a'.charCodeAt(0)
	var UPPER  = 'A'.charCodeAt(0)
	var PLUS_URL_SAFE = '-'.charCodeAt(0)
	var SLASH_URL_SAFE = '_'.charCodeAt(0)

	function decode (elt) {
		var code = elt.charCodeAt(0)
		if (code === PLUS ||
		    code === PLUS_URL_SAFE)
			return 62 // '+'
		if (code === SLASH ||
		    code === SLASH_URL_SAFE)
			return 63 // '/'
		if (code < NUMBER)
			return -1 //no match
		if (code < NUMBER + 10)
			return code - NUMBER + 26 + 26
		if (code < UPPER + 26)
			return code - UPPER
		if (code < LOWER + 26)
			return code - LOWER + 26
	}

	function b64ToByteArray (b64) {
		var i, j, l, tmp, placeHolders, arr

		if (b64.length % 4 > 0) {
			throw new Error('Invalid string. Length must be a multiple of 4')
		}

		// the number of equal signs (place holders)
		// if there are two placeholders, than the two characters before it
		// represent one byte
		// if there is only one, then the three characters before it represent 2 bytes
		// this is just a cheap hack to not do indexOf twice
		var len = b64.length
		placeHolders = '=' === b64.charAt(len - 2) ? 2 : '=' === b64.charAt(len - 1) ? 1 : 0

		// base64 is 4/3 + up to two characters of the original data
		arr = new Arr(b64.length * 3 / 4 - placeHolders)

		// if there are placeholders, only get up to the last complete 4 chars
		l = placeHolders > 0 ? b64.length - 4 : b64.length

		var L = 0

		function push (v) {
			arr[L++] = v
		}

		for (i = 0, j = 0; i < l; i += 4, j += 3) {
			tmp = (decode(b64.charAt(i)) << 18) | (decode(b64.charAt(i + 1)) << 12) | (decode(b64.charAt(i + 2)) << 6) | decode(b64.charAt(i + 3))
			push((tmp & 0xFF0000) >> 16)
			push((tmp & 0xFF00) >> 8)
			push(tmp & 0xFF)
		}

		if (placeHolders === 2) {
			tmp = (decode(b64.charAt(i)) << 2) | (decode(b64.charAt(i + 1)) >> 4)
			push(tmp & 0xFF)
		} else if (placeHolders === 1) {
			tmp = (decode(b64.charAt(i)) << 10) | (decode(b64.charAt(i + 1)) << 4) | (decode(b64.charAt(i + 2)) >> 2)
			push((tmp >> 8) & 0xFF)
			push(tmp & 0xFF)
		}

		return arr
	}

	function uint8ToBase64 (uint8) {
		var i,
			extraBytes = uint8.length % 3, // if we have 1 byte left, pad 2 bytes
			output = "",
			temp, length

		function encode (num) {
			return lookup.charAt(num)
		}

		function tripletToBase64 (num) {
			return encode(num >> 18 & 0x3F) + encode(num >> 12 & 0x3F) + encode(num >> 6 & 0x3F) + encode(num & 0x3F)
		}

		// go through the array every three bytes, we'll deal with trailing stuff later
		for (i = 0, length = uint8.length - extraBytes; i < length; i += 3) {
			temp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
			output += tripletToBase64(temp)
		}

		// pad the end with zeros, but make sure to not forget the extra bytes
		switch (extraBytes) {
			case 1:
				temp = uint8[uint8.length - 1]
				output += encode(temp >> 2)
				output += encode((temp << 4) & 0x3F)
				output += '=='
				break
			case 2:
				temp = (uint8[uint8.length - 2] << 8) + (uint8[uint8.length - 1])
				output += encode(temp >> 10)
				output += encode((temp >> 4) & 0x3F)
				output += encode((temp << 2) & 0x3F)
				output += '='
				break
		}

		return output
	}

	exports.toByteArray = b64ToByteArray
	exports.fromByteArray = uint8ToBase64
}(typeof exports === 'undefined' ? (this.base64js = {}) : exports))

},{}],85:[function(require,module,exports){
exports.read = function(buffer, offset, isLE, mLen, nBytes) {
  var e, m,
      eLen = nBytes * 8 - mLen - 1,
      eMax = (1 << eLen) - 1,
      eBias = eMax >> 1,
      nBits = -7,
      i = isLE ? (nBytes - 1) : 0,
      d = isLE ? -1 : 1,
      s = buffer[offset + i];

  i += d;

  e = s & ((1 << (-nBits)) - 1);
  s >>= (-nBits);
  nBits += eLen;
  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8);

  m = e & ((1 << (-nBits)) - 1);
  e >>= (-nBits);
  nBits += mLen;
  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8);

  if (e === 0) {
    e = 1 - eBias;
  } else if (e === eMax) {
    return m ? NaN : ((s ? -1 : 1) * Infinity);
  } else {
    m = m + Math.pow(2, mLen);
    e = e - eBias;
  }
  return (s ? -1 : 1) * m * Math.pow(2, e - mLen);
};

exports.write = function(buffer, value, offset, isLE, mLen, nBytes) {
  var e, m, c,
      eLen = nBytes * 8 - mLen - 1,
      eMax = (1 << eLen) - 1,
      eBias = eMax >> 1,
      rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0),
      i = isLE ? 0 : (nBytes - 1),
      d = isLE ? 1 : -1,
      s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0;

  value = Math.abs(value);

  if (isNaN(value) || value === Infinity) {
    m = isNaN(value) ? 1 : 0;
    e = eMax;
  } else {
    e = Math.floor(Math.log(value) / Math.LN2);
    if (value * (c = Math.pow(2, -e)) < 1) {
      e--;
      c *= 2;
    }
    if (e + eBias >= 1) {
      value += rt / c;
    } else {
      value += rt * Math.pow(2, 1 - eBias);
    }
    if (value * c >= 2) {
      e++;
      c /= 2;
    }

    if (e + eBias >= eMax) {
      m = 0;
      e = eMax;
    } else if (e + eBias >= 1) {
      m = (value * c - 1) * Math.pow(2, mLen);
      e = e + eBias;
    } else {
      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen);
      e = 0;
    }
  }

  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8);

  e = (e << mLen) | m;
  eLen += mLen;
  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8);

  buffer[offset + i - d] |= s * 128;
};

},{}],86:[function(require,module,exports){

/**
 * isArray
 */

var isArray = Array.isArray;

/**
 * toString
 */

var str = Object.prototype.toString;

/**
 * Whether or not the given `val`
 * is an array.
 *
 * example:
 *
 *        isArray([]);
 *        // > true
 *        isArray(arguments);
 *        // > false
 *        isArray('');
 *        // > false
 *
 * @param {mixed} val
 * @return {bool}
 */

module.exports = isArray || function (val) {
  return !! val && '[object Array]' == str.call(val);
};

},{}],87:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

function EventEmitter() {
  this._events = this._events || {};
  this._maxListeners = this._maxListeners || undefined;
}
module.exports = EventEmitter;

// Backwards-compat with node 0.10.x
EventEmitter.EventEmitter = EventEmitter;

EventEmitter.prototype._events = undefined;
EventEmitter.prototype._maxListeners = undefined;

// By default EventEmitters will print a warning if more than 10 listeners are
// added to it. This is a useful default which helps finding memory leaks.
EventEmitter.defaultMaxListeners = 10;

// Obviously not all Emitters should be limited to 10. This function allows
// that to be increased. Set to zero for unlimited.
EventEmitter.prototype.setMaxListeners = function(n) {
  if (!isNumber(n) || n < 0 || isNaN(n))
    throw TypeError('n must be a positive number');
  this._maxListeners = n;
  return this;
};

EventEmitter.prototype.emit = function(type) {
  var er, handler, len, args, i, listeners;

  if (!this._events)
    this._events = {};

  // If there is no 'error' event listener then throw.
  if (type === 'error') {
    if (!this._events.error ||
        (isObject(this._events.error) && !this._events.error.length)) {
      er = arguments[1];
      if (er instanceof Error) {
        throw er; // Unhandled 'error' event
      }
      throw TypeError('Uncaught, unspecified "error" event.');
    }
  }

  handler = this._events[type];

  if (isUndefined(handler))
    return false;

  if (isFunction(handler)) {
    switch (arguments.length) {
      // fast cases
      case 1:
        handler.call(this);
        break;
      case 2:
        handler.call(this, arguments[1]);
        break;
      case 3:
        handler.call(this, arguments[1], arguments[2]);
        break;
      // slower
      default:
        len = arguments.length;
        args = new Array(len - 1);
        for (i = 1; i < len; i++)
          args[i - 1] = arguments[i];
        handler.apply(this, args);
    }
  } else if (isObject(handler)) {
    len = arguments.length;
    args = new Array(len - 1);
    for (i = 1; i < len; i++)
      args[i - 1] = arguments[i];

    listeners = handler.slice();
    len = listeners.length;
    for (i = 0; i < len; i++)
      listeners[i].apply(this, args);
  }

  return true;
};

EventEmitter.prototype.addListener = function(type, listener) {
  var m;

  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  if (!this._events)
    this._events = {};

  // To avoid recursion in the case that type === "newListener"! Before
  // adding it to the listeners, first emit "newListener".
  if (this._events.newListener)
    this.emit('newListener', type,
              isFunction(listener.listener) ?
              listener.listener : listener);

  if (!this._events[type])
    // Optimize the case of one listener. Don't need the extra array object.
    this._events[type] = listener;
  else if (isObject(this._events[type]))
    // If we've already got an array, just append.
    this._events[type].push(listener);
  else
    // Adding the second element, need to change to array.
    this._events[type] = [this._events[type], listener];

  // Check for listener leak
  if (isObject(this._events[type]) && !this._events[type].warned) {
    var m;
    if (!isUndefined(this._maxListeners)) {
      m = this._maxListeners;
    } else {
      m = EventEmitter.defaultMaxListeners;
    }

    if (m && m > 0 && this._events[type].length > m) {
      this._events[type].warned = true;
      console.error('(node) warning: possible EventEmitter memory ' +
                    'leak detected. %d listeners added. ' +
                    'Use emitter.setMaxListeners() to increase limit.',
                    this._events[type].length);
      if (typeof console.trace === 'function') {
        // not supported in IE 10
        console.trace();
      }
    }
  }

  return this;
};

EventEmitter.prototype.on = EventEmitter.prototype.addListener;

EventEmitter.prototype.once = function(type, listener) {
  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  var fired = false;

  function g() {
    this.removeListener(type, g);

    if (!fired) {
      fired = true;
      listener.apply(this, arguments);
    }
  }

  g.listener = listener;
  this.on(type, g);

  return this;
};

// emits a 'removeListener' event iff the listener was removed
EventEmitter.prototype.removeListener = function(type, listener) {
  var list, position, length, i;

  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  if (!this._events || !this._events[type])
    return this;

  list = this._events[type];
  length = list.length;
  position = -1;

  if (list === listener ||
      (isFunction(list.listener) && list.listener === listener)) {
    delete this._events[type];
    if (this._events.removeListener)
      this.emit('removeListener', type, listener);

  } else if (isObject(list)) {
    for (i = length; i-- > 0;) {
      if (list[i] === listener ||
          (list[i].listener && list[i].listener === listener)) {
        position = i;
        break;
      }
    }

    if (position < 0)
      return this;

    if (list.length === 1) {
      list.length = 0;
      delete this._events[type];
    } else {
      list.splice(position, 1);
    }

    if (this._events.removeListener)
      this.emit('removeListener', type, listener);
  }

  return this;
};

EventEmitter.prototype.removeAllListeners = function(type) {
  var key, listeners;

  if (!this._events)
    return this;

  // not listening for removeListener, no need to emit
  if (!this._events.removeListener) {
    if (arguments.length === 0)
      this._events = {};
    else if (this._events[type])
      delete this._events[type];
    return this;
  }

  // emit removeListener for all listeners on all events
  if (arguments.length === 0) {
    for (key in this._events) {
      if (key === 'removeListener') continue;
      this.removeAllListeners(key);
    }
    this.removeAllListeners('removeListener');
    this._events = {};
    return this;
  }

  listeners = this._events[type];

  if (isFunction(listeners)) {
    this.removeListener(type, listeners);
  } else {
    // LIFO order
    while (listeners.length)
      this.removeListener(type, listeners[listeners.length - 1]);
  }
  delete this._events[type];

  return this;
};

EventEmitter.prototype.listeners = function(type) {
  var ret;
  if (!this._events || !this._events[type])
    ret = [];
  else if (isFunction(this._events[type]))
    ret = [this._events[type]];
  else
    ret = this._events[type].slice();
  return ret;
};

EventEmitter.listenerCount = function(emitter, type) {
  var ret;
  if (!emitter._events || !emitter._events[type])
    ret = 0;
  else if (isFunction(emitter._events[type]))
    ret = 1;
  else
    ret = emitter._events[type].length;
  return ret;
};

function isFunction(arg) {
  return typeof arg === 'function';
}

function isNumber(arg) {
  return typeof arg === 'number';
}

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}

function isUndefined(arg) {
  return arg === void 0;
}

},{}],88:[function(require,module,exports){
if (typeof Object.create === 'function') {
  // implementation from standard node.js 'util' module
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    ctor.prototype = Object.create(superCtor.prototype, {
      constructor: {
        value: ctor,
        enumerable: false,
        writable: true,
        configurable: true
      }
    });
  };
} else {
  // old school shim for old browsers
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    var TempCtor = function () {}
    TempCtor.prototype = superCtor.prototype
    ctor.prototype = new TempCtor()
    ctor.prototype.constructor = ctor
  }
}

},{}],89:[function(require,module,exports){
module.exports = Array.isArray || function (arr) {
  return Object.prototype.toString.call(arr) == '[object Array]';
};

},{}],90:[function(require,module,exports){
(function (process){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// resolves . and .. elements in a path array with directory names there
// must be no slashes, empty elements, or device names (c:\) in the array
// (so also no leading and trailing slashes - it does not distinguish
// relative and absolute paths)
function normalizeArray(parts, allowAboveRoot) {
  // if the path tries to go above the root, `up` ends up > 0
  var up = 0;
  for (var i = parts.length - 1; i >= 0; i--) {
    var last = parts[i];
    if (last === '.') {
      parts.splice(i, 1);
    } else if (last === '..') {
      parts.splice(i, 1);
      up++;
    } else if (up) {
      parts.splice(i, 1);
      up--;
    }
  }

  // if the path is allowed to go above the root, restore leading ..s
  if (allowAboveRoot) {
    for (; up--; up) {
      parts.unshift('..');
    }
  }

  return parts;
}

// Split a filename into [root, dir, basename, ext], unix version
// 'root' is just a slash, or nothing.
var splitPathRe =
    /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
var splitPath = function(filename) {
  return splitPathRe.exec(filename).slice(1);
};

// path.resolve([from ...], to)
// posix version
exports.resolve = function() {
  var resolvedPath = '',
      resolvedAbsolute = false;

  for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
    var path = (i >= 0) ? arguments[i] : process.cwd();

    // Skip empty and invalid entries
    if (typeof path !== 'string') {
      throw new TypeError('Arguments to path.resolve must be strings');
    } else if (!path) {
      continue;
    }

    resolvedPath = path + '/' + resolvedPath;
    resolvedAbsolute = path.charAt(0) === '/';
  }

  // At this point the path should be resolved to a full absolute path, but
  // handle relative paths to be safe (might happen when process.cwd() fails)

  // Normalize the path
  resolvedPath = normalizeArray(filter(resolvedPath.split('/'), function(p) {
    return !!p;
  }), !resolvedAbsolute).join('/');

  return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
};

// path.normalize(path)
// posix version
exports.normalize = function(path) {
  var isAbsolute = exports.isAbsolute(path),
      trailingSlash = substr(path, -1) === '/';

  // Normalize the path
  path = normalizeArray(filter(path.split('/'), function(p) {
    return !!p;
  }), !isAbsolute).join('/');

  if (!path && !isAbsolute) {
    path = '.';
  }
  if (path && trailingSlash) {
    path += '/';
  }

  return (isAbsolute ? '/' : '') + path;
};

// posix version
exports.isAbsolute = function(path) {
  return path.charAt(0) === '/';
};

// posix version
exports.join = function() {
  var paths = Array.prototype.slice.call(arguments, 0);
  return exports.normalize(filter(paths, function(p, index) {
    if (typeof p !== 'string') {
      throw new TypeError('Arguments to path.join must be strings');
    }
    return p;
  }).join('/'));
};


// path.relative(from, to)
// posix version
exports.relative = function(from, to) {
  from = exports.resolve(from).substr(1);
  to = exports.resolve(to).substr(1);

  function trim(arr) {
    var start = 0;
    for (; start < arr.length; start++) {
      if (arr[start] !== '') break;
    }

    var end = arr.length - 1;
    for (; end >= 0; end--) {
      if (arr[end] !== '') break;
    }

    if (start > end) return [];
    return arr.slice(start, end - start + 1);
  }

  var fromParts = trim(from.split('/'));
  var toParts = trim(to.split('/'));

  var length = Math.min(fromParts.length, toParts.length);
  var samePartsLength = length;
  for (var i = 0; i < length; i++) {
    if (fromParts[i] !== toParts[i]) {
      samePartsLength = i;
      break;
    }
  }

  var outputParts = [];
  for (var i = samePartsLength; i < fromParts.length; i++) {
    outputParts.push('..');
  }

  outputParts = outputParts.concat(toParts.slice(samePartsLength));

  return outputParts.join('/');
};

exports.sep = '/';
exports.delimiter = ':';

exports.dirname = function(path) {
  var result = splitPath(path),
      root = result[0],
      dir = result[1];

  if (!root && !dir) {
    // No dirname whatsoever
    return '.';
  }

  if (dir) {
    // It has a dirname, strip trailing slash
    dir = dir.substr(0, dir.length - 1);
  }

  return root + dir;
};


exports.basename = function(path, ext) {
  var f = splitPath(path)[2];
  // TODO: make this comparison case-insensitive on windows?
  if (ext && f.substr(-1 * ext.length) === ext) {
    f = f.substr(0, f.length - ext.length);
  }
  return f;
};


exports.extname = function(path) {
  return splitPath(path)[3];
};

function filter (xs, f) {
    if (xs.filter) return xs.filter(f);
    var res = [];
    for (var i = 0; i < xs.length; i++) {
        if (f(xs[i], i, xs)) res.push(xs[i]);
    }
    return res;
}

// String.prototype.substr - negative index don't work in IE8
var substr = 'ab'.substr(-1) === 'b'
    ? function (str, start, len) { return str.substr(start, len) }
    : function (str, start, len) {
        if (start < 0) start = str.length + start;
        return str.substr(start, len);
    }
;

}).call(this,require('_process'))
},{"_process":91}],91:[function(require,module,exports){
// shim for using process in browser

var process = module.exports = {};
var queue = [];
var draining = false;

function drainQueue() {
    if (draining) {
        return;
    }
    draining = true;
    var currentQueue;
    var len = queue.length;
    while(len) {
        currentQueue = queue;
        queue = [];
        var i = -1;
        while (++i < len) {
            currentQueue[i]();
        }
        len = queue.length;
    }
    draining = false;
}
process.nextTick = function (fun) {
    queue.push(fun);
    if (!draining) {
        setTimeout(drainQueue, 0);
    }
};

process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues

function noop() {}

process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;

process.binding = function (name) {
    throw new Error('process.binding is not supported');
};

// TODO(shtylman)
process.cwd = function () { return '/' };
process.chdir = function (dir) {
    throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };

},{}],92:[function(require,module,exports){
module.exports = require("./lib/_stream_duplex.js")

},{"./lib/_stream_duplex.js":93}],93:[function(require,module,exports){
(function (process){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// a duplex stream is just a stream that is both readable and writable.
// Since JS doesn't have multiple prototypal inheritance, this class
// prototypally inherits from Readable, and then parasitically from
// Writable.

module.exports = Duplex;

/*<replacement>*/
var objectKeys = Object.keys || function (obj) {
  var keys = [];
  for (var key in obj) keys.push(key);
  return keys;
}
/*</replacement>*/


/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

var Readable = require('./_stream_readable');
var Writable = require('./_stream_writable');

util.inherits(Duplex, Readable);

forEach(objectKeys(Writable.prototype), function(method) {
  if (!Duplex.prototype[method])
    Duplex.prototype[method] = Writable.prototype[method];
});

function Duplex(options) {
  if (!(this instanceof Duplex))
    return new Duplex(options);

  Readable.call(this, options);
  Writable.call(this, options);

  if (options && options.readable === false)
    this.readable = false;

  if (options && options.writable === false)
    this.writable = false;

  this.allowHalfOpen = true;
  if (options && options.allowHalfOpen === false)
    this.allowHalfOpen = false;

  this.once('end', onend);
}

// the no-half-open enforcer
function onend() {
  // if we allow half-open state, or if the writable side ended,
  // then we're ok.
  if (this.allowHalfOpen || this._writableState.ended)
    return;

  // no more data can be written.
  // But allow more writes to happen in this tick.
  process.nextTick(this.end.bind(this));
}

function forEach (xs, f) {
  for (var i = 0, l = xs.length; i < l; i++) {
    f(xs[i], i);
  }
}

}).call(this,require('_process'))
},{"./_stream_readable":95,"./_stream_writable":97,"_process":91,"core-util-is":98,"inherits":88}],94:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// a passthrough stream.
// basically just the most minimal sort of Transform stream.
// Every written chunk gets output as-is.

module.exports = PassThrough;

var Transform = require('./_stream_transform');

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

util.inherits(PassThrough, Transform);

function PassThrough(options) {
  if (!(this instanceof PassThrough))
    return new PassThrough(options);

  Transform.call(this, options);
}

PassThrough.prototype._transform = function(chunk, encoding, cb) {
  cb(null, chunk);
};

},{"./_stream_transform":96,"core-util-is":98,"inherits":88}],95:[function(require,module,exports){
(function (process){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

module.exports = Readable;

/*<replacement>*/
var isArray = require('isarray');
/*</replacement>*/


/*<replacement>*/
var Buffer = require('buffer').Buffer;
/*</replacement>*/

Readable.ReadableState = ReadableState;

var EE = require('events').EventEmitter;

/*<replacement>*/
if (!EE.listenerCount) EE.listenerCount = function(emitter, type) {
  return emitter.listeners(type).length;
};
/*</replacement>*/

var Stream = require('stream');

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

var StringDecoder;

util.inherits(Readable, Stream);

function ReadableState(options, stream) {
  options = options || {};

  // the point at which it stops calling _read() to fill the buffer
  // Note: 0 is a valid value, means "don't call _read preemptively ever"
  var hwm = options.highWaterMark;
  this.highWaterMark = (hwm || hwm === 0) ? hwm : 16 * 1024;

  // cast to ints.
  this.highWaterMark = ~~this.highWaterMark;

  this.buffer = [];
  this.length = 0;
  this.pipes = null;
  this.pipesCount = 0;
  this.flowing = false;
  this.ended = false;
  this.endEmitted = false;
  this.reading = false;

  // In streams that never have any data, and do push(null) right away,
  // the consumer can miss the 'end' event if they do some I/O before
  // consuming the stream.  So, we don't emit('end') until some reading
  // happens.
  this.calledRead = false;

  // a flag to be able to tell if the onwrite cb is called immediately,
  // or on a later tick.  We set this to true at first, becuase any
  // actions that shouldn't happen until "later" should generally also
  // not happen before the first write call.
  this.sync = true;

  // whenever we return null, then we set a flag to say
  // that we're awaiting a 'readable' event emission.
  this.needReadable = false;
  this.emittedReadable = false;
  this.readableListening = false;


  // object stream flag. Used to make read(n) ignore n and to
  // make all the buffer merging and length checks go away
  this.objectMode = !!options.objectMode;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // when piping, we only care about 'readable' events that happen
  // after read()ing all the bytes and not getting any pushback.
  this.ranOut = false;

  // the number of writers that are awaiting a drain event in .pipe()s
  this.awaitDrain = 0;

  // if true, a maybeReadMore has been scheduled
  this.readingMore = false;

  this.decoder = null;
  this.encoding = null;
  if (options.encoding) {
    if (!StringDecoder)
      StringDecoder = require('string_decoder/').StringDecoder;
    this.decoder = new StringDecoder(options.encoding);
    this.encoding = options.encoding;
  }
}

function Readable(options) {
  if (!(this instanceof Readable))
    return new Readable(options);

  this._readableState = new ReadableState(options, this);

  // legacy
  this.readable = true;

  Stream.call(this);
}

// Manually shove something into the read() buffer.
// This returns true if the highWaterMark has not been hit yet,
// similar to how Writable.write() returns true if you should
// write() some more.
Readable.prototype.push = function(chunk, encoding) {
  var state = this._readableState;

  if (typeof chunk === 'string' && !state.objectMode) {
    encoding = encoding || state.defaultEncoding;
    if (encoding !== state.encoding) {
      chunk = new Buffer(chunk, encoding);
      encoding = '';
    }
  }

  return readableAddChunk(this, state, chunk, encoding, false);
};

// Unshift should *always* be something directly out of read()
Readable.prototype.unshift = function(chunk) {
  var state = this._readableState;
  return readableAddChunk(this, state, chunk, '', true);
};

function readableAddChunk(stream, state, chunk, encoding, addToFront) {
  var er = chunkInvalid(state, chunk);
  if (er) {
    stream.emit('error', er);
  } else if (chunk === null || chunk === undefined) {
    state.reading = false;
    if (!state.ended)
      onEofChunk(stream, state);
  } else if (state.objectMode || chunk && chunk.length > 0) {
    if (state.ended && !addToFront) {
      var e = new Error('stream.push() after EOF');
      stream.emit('error', e);
    } else if (state.endEmitted && addToFront) {
      var e = new Error('stream.unshift() after end event');
      stream.emit('error', e);
    } else {
      if (state.decoder && !addToFront && !encoding)
        chunk = state.decoder.write(chunk);

      // update the buffer info.
      state.length += state.objectMode ? 1 : chunk.length;
      if (addToFront) {
        state.buffer.unshift(chunk);
      } else {
        state.reading = false;
        state.buffer.push(chunk);
      }

      if (state.needReadable)
        emitReadable(stream);

      maybeReadMore(stream, state);
    }
  } else if (!addToFront) {
    state.reading = false;
  }

  return needMoreData(state);
}



// if it's past the high water mark, we can push in some more.
// Also, if we have no data yet, we can stand some
// more bytes.  This is to work around cases where hwm=0,
// such as the repl.  Also, if the push() triggered a
// readable event, and the user called read(largeNumber) such that
// needReadable was set, then we ought to push more, so that another
// 'readable' event will be triggered.
function needMoreData(state) {
  return !state.ended &&
         (state.needReadable ||
          state.length < state.highWaterMark ||
          state.length === 0);
}

// backwards compatibility.
Readable.prototype.setEncoding = function(enc) {
  if (!StringDecoder)
    StringDecoder = require('string_decoder/').StringDecoder;
  this._readableState.decoder = new StringDecoder(enc);
  this._readableState.encoding = enc;
};

// Don't raise the hwm > 128MB
var MAX_HWM = 0x800000;
function roundUpToNextPowerOf2(n) {
  if (n >= MAX_HWM) {
    n = MAX_HWM;
  } else {
    // Get the next highest power of 2
    n--;
    for (var p = 1; p < 32; p <<= 1) n |= n >> p;
    n++;
  }
  return n;
}

function howMuchToRead(n, state) {
  if (state.length === 0 && state.ended)
    return 0;

  if (state.objectMode)
    return n === 0 ? 0 : 1;

  if (n === null || isNaN(n)) {
    // only flow one buffer at a time
    if (state.flowing && state.buffer.length)
      return state.buffer[0].length;
    else
      return state.length;
  }

  if (n <= 0)
    return 0;

  // If we're asking for more than the target buffer level,
  // then raise the water mark.  Bump up to the next highest
  // power of 2, to prevent increasing it excessively in tiny
  // amounts.
  if (n > state.highWaterMark)
    state.highWaterMark = roundUpToNextPowerOf2(n);

  // don't have that much.  return null, unless we've ended.
  if (n > state.length) {
    if (!state.ended) {
      state.needReadable = true;
      return 0;
    } else
      return state.length;
  }

  return n;
}

// you can override either this method, or the async _read(n) below.
Readable.prototype.read = function(n) {
  var state = this._readableState;
  state.calledRead = true;
  var nOrig = n;
  var ret;

  if (typeof n !== 'number' || n > 0)
    state.emittedReadable = false;

  // if we're doing read(0) to trigger a readable event, but we
  // already have a bunch of data in the buffer, then just trigger
  // the 'readable' event and move on.
  if (n === 0 &&
      state.needReadable &&
      (state.length >= state.highWaterMark || state.ended)) {
    emitReadable(this);
    return null;
  }

  n = howMuchToRead(n, state);

  // if we've ended, and we're now clear, then finish it up.
  if (n === 0 && state.ended) {
    ret = null;

    // In cases where the decoder did not receive enough data
    // to produce a full chunk, then immediately received an
    // EOF, state.buffer will contain [<Buffer >, <Buffer 00 ...>].
    // howMuchToRead will see this and coerce the amount to
    // read to zero (because it's looking at the length of the
    // first <Buffer > in state.buffer), and we'll end up here.
    //
    // This can only happen via state.decoder -- no other venue
    // exists for pushing a zero-length chunk into state.buffer
    // and triggering this behavior. In this case, we return our
    // remaining data and end the stream, if appropriate.
    if (state.length > 0 && state.decoder) {
      ret = fromList(n, state);
      state.length -= ret.length;
    }

    if (state.length === 0)
      endReadable(this);

    return ret;
  }

  // All the actual chunk generation logic needs to be
  // *below* the call to _read.  The reason is that in certain
  // synthetic stream cases, such as passthrough streams, _read
  // may be a completely synchronous operation which may change
  // the state of the read buffer, providing enough data when
  // before there was *not* enough.
  //
  // So, the steps are:
  // 1. Figure out what the state of things will be after we do
  // a read from the buffer.
  //
  // 2. If that resulting state will trigger a _read, then call _read.
  // Note that this may be asynchronous, or synchronous.  Yes, it is
  // deeply ugly to write APIs this way, but that still doesn't mean
  // that the Readable class should behave improperly, as streams are
  // designed to be sync/async agnostic.
  // Take note if the _read call is sync or async (ie, if the read call
  // has returned yet), so that we know whether or not it's safe to emit
  // 'readable' etc.
  //
  // 3. Actually pull the requested chunks out of the buffer and return.

  // if we need a readable event, then we need to do some reading.
  var doRead = state.needReadable;

  // if we currently have less than the highWaterMark, then also read some
  if (state.length - n <= state.highWaterMark)
    doRead = true;

  // however, if we've ended, then there's no point, and if we're already
  // reading, then it's unnecessary.
  if (state.ended || state.reading)
    doRead = false;

  if (doRead) {
    state.reading = true;
    state.sync = true;
    // if the length is currently zero, then we *need* a readable event.
    if (state.length === 0)
      state.needReadable = true;
    // call internal read method
    this._read(state.highWaterMark);
    state.sync = false;
  }

  // If _read called its callback synchronously, then `reading`
  // will be false, and we need to re-evaluate how much data we
  // can return to the user.
  if (doRead && !state.reading)
    n = howMuchToRead(nOrig, state);

  if (n > 0)
    ret = fromList(n, state);
  else
    ret = null;

  if (ret === null) {
    state.needReadable = true;
    n = 0;
  }

  state.length -= n;

  // If we have nothing in the buffer, then we want to know
  // as soon as we *do* get something into the buffer.
  if (state.length === 0 && !state.ended)
    state.needReadable = true;

  // If we happened to read() exactly the remaining amount in the
  // buffer, and the EOF has been seen at this point, then make sure
  // that we emit 'end' on the very next tick.
  if (state.ended && !state.endEmitted && state.length === 0)
    endReadable(this);

  return ret;
};

function chunkInvalid(state, chunk) {
  var er = null;
  if (!Buffer.isBuffer(chunk) &&
      'string' !== typeof chunk &&
      chunk !== null &&
      chunk !== undefined &&
      !state.objectMode) {
    er = new TypeError('Invalid non-string/buffer chunk');
  }
  return er;
}


function onEofChunk(stream, state) {
  if (state.decoder && !state.ended) {
    var chunk = state.decoder.end();
    if (chunk && chunk.length) {
      state.buffer.push(chunk);
      state.length += state.objectMode ? 1 : chunk.length;
    }
  }
  state.ended = true;

  // if we've ended and we have some data left, then emit
  // 'readable' now to make sure it gets picked up.
  if (state.length > 0)
    emitReadable(stream);
  else
    endReadable(stream);
}

// Don't emit readable right away in sync mode, because this can trigger
// another read() call => stack overflow.  This way, it might trigger
// a nextTick recursion warning, but that's not so bad.
function emitReadable(stream) {
  var state = stream._readableState;
  state.needReadable = false;
  if (state.emittedReadable)
    return;

  state.emittedReadable = true;
  if (state.sync)
    process.nextTick(function() {
      emitReadable_(stream);
    });
  else
    emitReadable_(stream);
}

function emitReadable_(stream) {
  stream.emit('readable');
}


// at this point, the user has presumably seen the 'readable' event,
// and called read() to consume some data.  that may have triggered
// in turn another _read(n) call, in which case reading = true if
// it's in progress.
// However, if we're not ended, or reading, and the length < hwm,
// then go ahead and try to read some more preemptively.
function maybeReadMore(stream, state) {
  if (!state.readingMore) {
    state.readingMore = true;
    process.nextTick(function() {
      maybeReadMore_(stream, state);
    });
  }
}

function maybeReadMore_(stream, state) {
  var len = state.length;
  while (!state.reading && !state.flowing && !state.ended &&
         state.length < state.highWaterMark) {
    stream.read(0);
    if (len === state.length)
      // didn't get any data, stop spinning.
      break;
    else
      len = state.length;
  }
  state.readingMore = false;
}

// abstract method.  to be overridden in specific implementation classes.
// call cb(er, data) where data is <= n in length.
// for virtual (non-string, non-buffer) streams, "length" is somewhat
// arbitrary, and perhaps not very meaningful.
Readable.prototype._read = function(n) {
  this.emit('error', new Error('not implemented'));
};

Readable.prototype.pipe = function(dest, pipeOpts) {
  var src = this;
  var state = this._readableState;

  switch (state.pipesCount) {
    case 0:
      state.pipes = dest;
      break;
    case 1:
      state.pipes = [state.pipes, dest];
      break;
    default:
      state.pipes.push(dest);
      break;
  }
  state.pipesCount += 1;

  var doEnd = (!pipeOpts || pipeOpts.end !== false) &&
              dest !== process.stdout &&
              dest !== process.stderr;

  var endFn = doEnd ? onend : cleanup;
  if (state.endEmitted)
    process.nextTick(endFn);
  else
    src.once('end', endFn);

  dest.on('unpipe', onunpipe);
  function onunpipe(readable) {
    if (readable !== src) return;
    cleanup();
  }

  function onend() {
    dest.end();
  }

  // when the dest drains, it reduces the awaitDrain counter
  // on the source.  This would be more elegant with a .once()
  // handler in flow(), but adding and removing repeatedly is
  // too slow.
  var ondrain = pipeOnDrain(src);
  dest.on('drain', ondrain);

  function cleanup() {
    // cleanup event handlers once the pipe is broken
    dest.removeListener('close', onclose);
    dest.removeListener('finish', onfinish);
    dest.removeListener('drain', ondrain);
    dest.removeListener('error', onerror);
    dest.removeListener('unpipe', onunpipe);
    src.removeListener('end', onend);
    src.removeListener('end', cleanup);

    // if the reader is waiting for a drain event from this
    // specific writer, then it would cause it to never start
    // flowing again.
    // So, if this is awaiting a drain, then we just call it now.
    // If we don't know, then assume that we are waiting for one.
    if (!dest._writableState || dest._writableState.needDrain)
      ondrain();
  }

  // if the dest has an error, then stop piping into it.
  // however, don't suppress the throwing behavior for this.
  function onerror(er) {
    unpipe();
    dest.removeListener('error', onerror);
    if (EE.listenerCount(dest, 'error') === 0)
      dest.emit('error', er);
  }
  // This is a brutally ugly hack to make sure that our error handler
  // is attached before any userland ones.  NEVER DO THIS.
  if (!dest._events || !dest._events.error)
    dest.on('error', onerror);
  else if (isArray(dest._events.error))
    dest._events.error.unshift(onerror);
  else
    dest._events.error = [onerror, dest._events.error];



  // Both close and finish should trigger unpipe, but only once.
  function onclose() {
    dest.removeListener('finish', onfinish);
    unpipe();
  }
  dest.once('close', onclose);
  function onfinish() {
    dest.removeListener('close', onclose);
    unpipe();
  }
  dest.once('finish', onfinish);

  function unpipe() {
    src.unpipe(dest);
  }

  // tell the dest that it's being piped to
  dest.emit('pipe', src);

  // start the flow if it hasn't been started already.
  if (!state.flowing) {
    // the handler that waits for readable events after all
    // the data gets sucked out in flow.
    // This would be easier to follow with a .once() handler
    // in flow(), but that is too slow.
    this.on('readable', pipeOnReadable);

    state.flowing = true;
    process.nextTick(function() {
      flow(src);
    });
  }

  return dest;
};

function pipeOnDrain(src) {
  return function() {
    var dest = this;
    var state = src._readableState;
    state.awaitDrain--;
    if (state.awaitDrain === 0)
      flow(src);
  };
}

function flow(src) {
  var state = src._readableState;
  var chunk;
  state.awaitDrain = 0;

  function write(dest, i, list) {
    var written = dest.write(chunk);
    if (false === written) {
      state.awaitDrain++;
    }
  }

  while (state.pipesCount && null !== (chunk = src.read())) {

    if (state.pipesCount === 1)
      write(state.pipes, 0, null);
    else
      forEach(state.pipes, write);

    src.emit('data', chunk);

    // if anyone needs a drain, then we have to wait for that.
    if (state.awaitDrain > 0)
      return;
  }

  // if every destination was unpiped, either before entering this
  // function, or in the while loop, then stop flowing.
  //
  // NB: This is a pretty rare edge case.
  if (state.pipesCount === 0) {
    state.flowing = false;

    // if there were data event listeners added, then switch to old mode.
    if (EE.listenerCount(src, 'data') > 0)
      emitDataEvents(src);
    return;
  }

  // at this point, no one needed a drain, so we just ran out of data
  // on the next readable event, start it over again.
  state.ranOut = true;
}

function pipeOnReadable() {
  if (this._readableState.ranOut) {
    this._readableState.ranOut = false;
    flow(this);
  }
}


Readable.prototype.unpipe = function(dest) {
  var state = this._readableState;

  // if we're not piping anywhere, then do nothing.
  if (state.pipesCount === 0)
    return this;

  // just one destination.  most common case.
  if (state.pipesCount === 1) {
    // passed in one, but it's not the right one.
    if (dest && dest !== state.pipes)
      return this;

    if (!dest)
      dest = state.pipes;

    // got a match.
    state.pipes = null;
    state.pipesCount = 0;
    this.removeListener('readable', pipeOnReadable);
    state.flowing = false;
    if (dest)
      dest.emit('unpipe', this);
    return this;
  }

  // slow case. multiple pipe destinations.

  if (!dest) {
    // remove all.
    var dests = state.pipes;
    var len = state.pipesCount;
    state.pipes = null;
    state.pipesCount = 0;
    this.removeListener('readable', pipeOnReadable);
    state.flowing = false;

    for (var i = 0; i < len; i++)
      dests[i].emit('unpipe', this);
    return this;
  }

  // try to find the right one.
  var i = indexOf(state.pipes, dest);
  if (i === -1)
    return this;

  state.pipes.splice(i, 1);
  state.pipesCount -= 1;
  if (state.pipesCount === 1)
    state.pipes = state.pipes[0];

  dest.emit('unpipe', this);

  return this;
};

// set up data events if they are asked for
// Ensure readable listeners eventually get something
Readable.prototype.on = function(ev, fn) {
  var res = Stream.prototype.on.call(this, ev, fn);

  if (ev === 'data' && !this._readableState.flowing)
    emitDataEvents(this);

  if (ev === 'readable' && this.readable) {
    var state = this._readableState;
    if (!state.readableListening) {
      state.readableListening = true;
      state.emittedReadable = false;
      state.needReadable = true;
      if (!state.reading) {
        this.read(0);
      } else if (state.length) {
        emitReadable(this, state);
      }
    }
  }

  return res;
};
Readable.prototype.addListener = Readable.prototype.on;

// pause() and resume() are remnants of the legacy readable stream API
// If the user uses them, then switch into old mode.
Readable.prototype.resume = function() {
  emitDataEvents(this);
  this.read(0);
  this.emit('resume');
};

Readable.prototype.pause = function() {
  emitDataEvents(this, true);
  this.emit('pause');
};

function emitDataEvents(stream, startPaused) {
  var state = stream._readableState;

  if (state.flowing) {
    // https://github.com/isaacs/readable-stream/issues/16
    throw new Error('Cannot switch to old mode now.');
  }

  var paused = startPaused || false;
  var readable = false;

  // convert to an old-style stream.
  stream.readable = true;
  stream.pipe = Stream.prototype.pipe;
  stream.on = stream.addListener = Stream.prototype.on;

  stream.on('readable', function() {
    readable = true;

    var c;
    while (!paused && (null !== (c = stream.read())))
      stream.emit('data', c);

    if (c === null) {
      readable = false;
      stream._readableState.needReadable = true;
    }
  });

  stream.pause = function() {
    paused = true;
    this.emit('pause');
  };

  stream.resume = function() {
    paused = false;
    if (readable)
      process.nextTick(function() {
        stream.emit('readable');
      });
    else
      this.read(0);
    this.emit('resume');
  };

  // now make it start, just in case it hadn't already.
  stream.emit('readable');
}

// wrap an old-style stream as the async data source.
// This is *not* part of the readable stream interface.
// It is an ugly unfortunate mess of history.
Readable.prototype.wrap = function(stream) {
  var state = this._readableState;
  var paused = false;

  var self = this;
  stream.on('end', function() {
    if (state.decoder && !state.ended) {
      var chunk = state.decoder.end();
      if (chunk && chunk.length)
        self.push(chunk);
    }

    self.push(null);
  });

  stream.on('data', function(chunk) {
    if (state.decoder)
      chunk = state.decoder.write(chunk);

    // don't skip over falsy values in objectMode
    //if (state.objectMode && util.isNullOrUndefined(chunk))
    if (state.objectMode && (chunk === null || chunk === undefined))
      return;
    else if (!state.objectMode && (!chunk || !chunk.length))
      return;

    var ret = self.push(chunk);
    if (!ret) {
      paused = true;
      stream.pause();
    }
  });

  // proxy all the other methods.
  // important when wrapping filters and duplexes.
  for (var i in stream) {
    if (typeof stream[i] === 'function' &&
        typeof this[i] === 'undefined') {
      this[i] = function(method) { return function() {
        return stream[method].apply(stream, arguments);
      }}(i);
    }
  }

  // proxy certain important events.
  var events = ['error', 'close', 'destroy', 'pause', 'resume'];
  forEach(events, function(ev) {
    stream.on(ev, self.emit.bind(self, ev));
  });

  // when we try to consume some more bytes, simply unpause the
  // underlying stream.
  self._read = function(n) {
    if (paused) {
      paused = false;
      stream.resume();
    }
  };

  return self;
};



// exposed for testing purposes only.
Readable._fromList = fromList;

// Pluck off n bytes from an array of buffers.
// Length is the combined lengths of all the buffers in the list.
function fromList(n, state) {
  var list = state.buffer;
  var length = state.length;
  var stringMode = !!state.decoder;
  var objectMode = !!state.objectMode;
  var ret;

  // nothing in the list, definitely empty.
  if (list.length === 0)
    return null;

  if (length === 0)
    ret = null;
  else if (objectMode)
    ret = list.shift();
  else if (!n || n >= length) {
    // read it all, truncate the array.
    if (stringMode)
      ret = list.join('');
    else
      ret = Buffer.concat(list, length);
    list.length = 0;
  } else {
    // read just some of it.
    if (n < list[0].length) {
      // just take a part of the first list item.
      // slice is the same for buffers and strings.
      var buf = list[0];
      ret = buf.slice(0, n);
      list[0] = buf.slice(n);
    } else if (n === list[0].length) {
      // first list is a perfect match
      ret = list.shift();
    } else {
      // complex case.
      // we have enough to cover it, but it spans past the first buffer.
      if (stringMode)
        ret = '';
      else
        ret = new Buffer(n);

      var c = 0;
      for (var i = 0, l = list.length; i < l && c < n; i++) {
        var buf = list[0];
        var cpy = Math.min(n - c, buf.length);

        if (stringMode)
          ret += buf.slice(0, cpy);
        else
          buf.copy(ret, c, 0, cpy);

        if (cpy < buf.length)
          list[0] = buf.slice(cpy);
        else
          list.shift();

        c += cpy;
      }
    }
  }

  return ret;
}

function endReadable(stream) {
  var state = stream._readableState;

  // If we get here before consuming all the bytes, then that is a
  // bug in node.  Should never happen.
  if (state.length > 0)
    throw new Error('endReadable called on non-empty stream');

  if (!state.endEmitted && state.calledRead) {
    state.ended = true;
    process.nextTick(function() {
      // Check that we didn't get one last unshift.
      if (!state.endEmitted && state.length === 0) {
        state.endEmitted = true;
        stream.readable = false;
        stream.emit('end');
      }
    });
  }
}

function forEach (xs, f) {
  for (var i = 0, l = xs.length; i < l; i++) {
    f(xs[i], i);
  }
}

function indexOf (xs, x) {
  for (var i = 0, l = xs.length; i < l; i++) {
    if (xs[i] === x) return i;
  }
  return -1;
}

}).call(this,require('_process'))
},{"_process":91,"buffer":83,"core-util-is":98,"events":87,"inherits":88,"isarray":89,"stream":103,"string_decoder/":104}],96:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.


// a transform stream is a readable/writable stream where you do
// something with the data.  Sometimes it's called a "filter",
// but that's not a great name for it, since that implies a thing where
// some bits pass through, and others are simply ignored.  (That would
// be a valid example of a transform, of course.)
//
// While the output is causally related to the input, it's not a
// necessarily symmetric or synchronous transformation.  For example,
// a zlib stream might take multiple plain-text writes(), and then
// emit a single compressed chunk some time in the future.
//
// Here's how this works:
//
// The Transform stream has all the aspects of the readable and writable
// stream classes.  When you write(chunk), that calls _write(chunk,cb)
// internally, and returns false if there's a lot of pending writes
// buffered up.  When you call read(), that calls _read(n) until
// there's enough pending readable data buffered up.
//
// In a transform stream, the written data is placed in a buffer.  When
// _read(n) is called, it transforms the queued up data, calling the
// buffered _write cb's as it consumes chunks.  If consuming a single
// written chunk would result in multiple output chunks, then the first
// outputted bit calls the readcb, and subsequent chunks just go into
// the read buffer, and will cause it to emit 'readable' if necessary.
//
// This way, back-pressure is actually determined by the reading side,
// since _read has to be called to start processing a new chunk.  However,
// a pathological inflate type of transform can cause excessive buffering
// here.  For example, imagine a stream where every byte of input is
// interpreted as an integer from 0-255, and then results in that many
// bytes of output.  Writing the 4 bytes {ff,ff,ff,ff} would result in
// 1kb of data being output.  In this case, you could write a very small
// amount of input, and end up with a very large amount of output.  In
// such a pathological inflating mechanism, there'd be no way to tell
// the system to stop doing the transform.  A single 4MB write could
// cause the system to run out of memory.
//
// However, even in such a pathological case, only a single written chunk
// would be consumed, and then the rest would wait (un-transformed) until
// the results of the previous transformed chunk were consumed.

module.exports = Transform;

var Duplex = require('./_stream_duplex');

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

util.inherits(Transform, Duplex);


function TransformState(options, stream) {
  this.afterTransform = function(er, data) {
    return afterTransform(stream, er, data);
  };

  this.needTransform = false;
  this.transforming = false;
  this.writecb = null;
  this.writechunk = null;
}

function afterTransform(stream, er, data) {
  var ts = stream._transformState;
  ts.transforming = false;

  var cb = ts.writecb;

  if (!cb)
    return stream.emit('error', new Error('no writecb in Transform class'));

  ts.writechunk = null;
  ts.writecb = null;

  if (data !== null && data !== undefined)
    stream.push(data);

  if (cb)
    cb(er);

  var rs = stream._readableState;
  rs.reading = false;
  if (rs.needReadable || rs.length < rs.highWaterMark) {
    stream._read(rs.highWaterMark);
  }
}


function Transform(options) {
  if (!(this instanceof Transform))
    return new Transform(options);

  Duplex.call(this, options);

  var ts = this._transformState = new TransformState(options, this);

  // when the writable side finishes, then flush out anything remaining.
  var stream = this;

  // start out asking for a readable event once data is transformed.
  this._readableState.needReadable = true;

  // we have implemented the _read method, and done the other things
  // that Readable wants before the first _read call, so unset the
  // sync guard flag.
  this._readableState.sync = false;

  this.once('finish', function() {
    if ('function' === typeof this._flush)
      this._flush(function(er) {
        done(stream, er);
      });
    else
      done(stream);
  });
}

Transform.prototype.push = function(chunk, encoding) {
  this._transformState.needTransform = false;
  return Duplex.prototype.push.call(this, chunk, encoding);
};

// This is the part where you do stuff!
// override this function in implementation classes.
// 'chunk' is an input chunk.
//
// Call `push(newChunk)` to pass along transformed output
// to the readable side.  You may call 'push' zero or more times.
//
// Call `cb(err)` when you are done with this chunk.  If you pass
// an error, then that'll put the hurt on the whole operation.  If you
// never call cb(), then you'll never get another chunk.
Transform.prototype._transform = function(chunk, encoding, cb) {
  throw new Error('not implemented');
};

Transform.prototype._write = function(chunk, encoding, cb) {
  var ts = this._transformState;
  ts.writecb = cb;
  ts.writechunk = chunk;
  ts.writeencoding = encoding;
  if (!ts.transforming) {
    var rs = this._readableState;
    if (ts.needTransform ||
        rs.needReadable ||
        rs.length < rs.highWaterMark)
      this._read(rs.highWaterMark);
  }
};

// Doesn't matter what the args are here.
// _transform does all the work.
// That we got here means that the readable side wants more data.
Transform.prototype._read = function(n) {
  var ts = this._transformState;

  if (ts.writechunk !== null && ts.writecb && !ts.transforming) {
    ts.transforming = true;
    this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
  } else {
    // mark that we need a transform, so that any data that comes in
    // will get processed, now that we've asked for it.
    ts.needTransform = true;
  }
};


function done(stream, er) {
  if (er)
    return stream.emit('error', er);

  // if there's nothing in the write buffer, then that means
  // that nothing more will ever be provided
  var ws = stream._writableState;
  var rs = stream._readableState;
  var ts = stream._transformState;

  if (ws.length)
    throw new Error('calling transform done when ws.length != 0');

  if (ts.transforming)
    throw new Error('calling transform done when still transforming');

  return stream.push(null);
}

},{"./_stream_duplex":93,"core-util-is":98,"inherits":88}],97:[function(require,module,exports){
(function (process){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// A bit simpler than readable streams.
// Implement an async ._write(chunk, cb), and it'll handle all
// the drain event emission and buffering.

module.exports = Writable;

/*<replacement>*/
var Buffer = require('buffer').Buffer;
/*</replacement>*/

Writable.WritableState = WritableState;


/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

var Stream = require('stream');

util.inherits(Writable, Stream);

function WriteReq(chunk, encoding, cb) {
  this.chunk = chunk;
  this.encoding = encoding;
  this.callback = cb;
}

function WritableState(options, stream) {
  options = options || {};

  // the point at which write() starts returning false
  // Note: 0 is a valid value, means that we always return false if
  // the entire buffer is not flushed immediately on write()
  var hwm = options.highWaterMark;
  this.highWaterMark = (hwm || hwm === 0) ? hwm : 16 * 1024;

  // object stream flag to indicate whether or not this stream
  // contains buffers or objects.
  this.objectMode = !!options.objectMode;

  // cast to ints.
  this.highWaterMark = ~~this.highWaterMark;

  this.needDrain = false;
  // at the start of calling end()
  this.ending = false;
  // when end() has been called, and returned
  this.ended = false;
  // when 'finish' is emitted
  this.finished = false;

  // should we decode strings into buffers before passing to _write?
  // this is here so that some node-core streams can optimize string
  // handling at a lower level.
  var noDecode = options.decodeStrings === false;
  this.decodeStrings = !noDecode;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // not an actual buffer we keep track of, but a measurement
  // of how much we're waiting to get pushed to some underlying
  // socket or file.
  this.length = 0;

  // a flag to see when we're in the middle of a write.
  this.writing = false;

  // a flag to be able to tell if the onwrite cb is called immediately,
  // or on a later tick.  We set this to true at first, becuase any
  // actions that shouldn't happen until "later" should generally also
  // not happen before the first write call.
  this.sync = true;

  // a flag to know if we're processing previously buffered items, which
  // may call the _write() callback in the same tick, so that we don't
  // end up in an overlapped onwrite situation.
  this.bufferProcessing = false;

  // the callback that's passed to _write(chunk,cb)
  this.onwrite = function(er) {
    onwrite(stream, er);
  };

  // the callback that the user supplies to write(chunk,encoding,cb)
  this.writecb = null;

  // the amount that is being written when _write is called.
  this.writelen = 0;

  this.buffer = [];

  // True if the error was already emitted and should not be thrown again
  this.errorEmitted = false;
}

function Writable(options) {
  var Duplex = require('./_stream_duplex');

  // Writable ctor is applied to Duplexes, though they're not
  // instanceof Writable, they're instanceof Readable.
  if (!(this instanceof Writable) && !(this instanceof Duplex))
    return new Writable(options);

  this._writableState = new WritableState(options, this);

  // legacy.
  this.writable = true;

  Stream.call(this);
}

// Otherwise people can pipe Writable streams, which is just wrong.
Writable.prototype.pipe = function() {
  this.emit('error', new Error('Cannot pipe. Not readable.'));
};


function writeAfterEnd(stream, state, cb) {
  var er = new Error('write after end');
  // TODO: defer error events consistently everywhere, not just the cb
  stream.emit('error', er);
  process.nextTick(function() {
    cb(er);
  });
}

// If we get something that is not a buffer, string, null, or undefined,
// and we're not in objectMode, then that's an error.
// Otherwise stream chunks are all considered to be of length=1, and the
// watermarks determine how many objects to keep in the buffer, rather than
// how many bytes or characters.
function validChunk(stream, state, chunk, cb) {
  var valid = true;
  if (!Buffer.isBuffer(chunk) &&
      'string' !== typeof chunk &&
      chunk !== null &&
      chunk !== undefined &&
      !state.objectMode) {
    var er = new TypeError('Invalid non-string/buffer chunk');
    stream.emit('error', er);
    process.nextTick(function() {
      cb(er);
    });
    valid = false;
  }
  return valid;
}

Writable.prototype.write = function(chunk, encoding, cb) {
  var state = this._writableState;
  var ret = false;

  if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (Buffer.isBuffer(chunk))
    encoding = 'buffer';
  else if (!encoding)
    encoding = state.defaultEncoding;

  if (typeof cb !== 'function')
    cb = function() {};

  if (state.ended)
    writeAfterEnd(this, state, cb);
  else if (validChunk(this, state, chunk, cb))
    ret = writeOrBuffer(this, state, chunk, encoding, cb);

  return ret;
};

function decodeChunk(state, chunk, encoding) {
  if (!state.objectMode &&
      state.decodeStrings !== false &&
      typeof chunk === 'string') {
    chunk = new Buffer(chunk, encoding);
  }
  return chunk;
}

// if we're already writing something, then just put this
// in the queue, and wait our turn.  Otherwise, call _write
// If we return false, then we need a drain event, so set that flag.
function writeOrBuffer(stream, state, chunk, encoding, cb) {
  chunk = decodeChunk(state, chunk, encoding);
  if (Buffer.isBuffer(chunk))
    encoding = 'buffer';
  var len = state.objectMode ? 1 : chunk.length;

  state.length += len;

  var ret = state.length < state.highWaterMark;
  // we must ensure that previous needDrain will not be reset to false.
  if (!ret)
    state.needDrain = true;

  if (state.writing)
    state.buffer.push(new WriteReq(chunk, encoding, cb));
  else
    doWrite(stream, state, len, chunk, encoding, cb);

  return ret;
}

function doWrite(stream, state, len, chunk, encoding, cb) {
  state.writelen = len;
  state.writecb = cb;
  state.writing = true;
  state.sync = true;
  stream._write(chunk, encoding, state.onwrite);
  state.sync = false;
}

function onwriteError(stream, state, sync, er, cb) {
  if (sync)
    process.nextTick(function() {
      cb(er);
    });
  else
    cb(er);

  stream._writableState.errorEmitted = true;
  stream.emit('error', er);
}

function onwriteStateUpdate(state) {
  state.writing = false;
  state.writecb = null;
  state.length -= state.writelen;
  state.writelen = 0;
}

function onwrite(stream, er) {
  var state = stream._writableState;
  var sync = state.sync;
  var cb = state.writecb;

  onwriteStateUpdate(state);

  if (er)
    onwriteError(stream, state, sync, er, cb);
  else {
    // Check if we're actually ready to finish, but don't emit yet
    var finished = needFinish(stream, state);

    if (!finished && !state.bufferProcessing && state.buffer.length)
      clearBuffer(stream, state);

    if (sync) {
      process.nextTick(function() {
        afterWrite(stream, state, finished, cb);
      });
    } else {
      afterWrite(stream, state, finished, cb);
    }
  }
}

function afterWrite(stream, state, finished, cb) {
  if (!finished)
    onwriteDrain(stream, state);
  cb();
  if (finished)
    finishMaybe(stream, state);
}

// Must force callback to be called on nextTick, so that we don't
// emit 'drain' before the write() consumer gets the 'false' return
// value, and has a chance to attach a 'drain' listener.
function onwriteDrain(stream, state) {
  if (state.length === 0 && state.needDrain) {
    state.needDrain = false;
    stream.emit('drain');
  }
}


// if there's something in the buffer waiting, then process it
function clearBuffer(stream, state) {
  state.bufferProcessing = true;

  for (var c = 0; c < state.buffer.length; c++) {
    var entry = state.buffer[c];
    var chunk = entry.chunk;
    var encoding = entry.encoding;
    var cb = entry.callback;
    var len = state.objectMode ? 1 : chunk.length;

    doWrite(stream, state, len, chunk, encoding, cb);

    // if we didn't call the onwrite immediately, then
    // it means that we need to wait until it does.
    // also, that means that the chunk and cb are currently
    // being processed, so move the buffer counter past them.
    if (state.writing) {
      c++;
      break;
    }
  }

  state.bufferProcessing = false;
  if (c < state.buffer.length)
    state.buffer = state.buffer.slice(c);
  else
    state.buffer.length = 0;
}

Writable.prototype._write = function(chunk, encoding, cb) {
  cb(new Error('not implemented'));
};

Writable.prototype.end = function(chunk, encoding, cb) {
  var state = this._writableState;

  if (typeof chunk === 'function') {
    cb = chunk;
    chunk = null;
    encoding = null;
  } else if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (typeof chunk !== 'undefined' && chunk !== null)
    this.write(chunk, encoding);

  // ignore unnecessary end() calls.
  if (!state.ending && !state.finished)
    endWritable(this, state, cb);
};


function needFinish(stream, state) {
  return (state.ending &&
          state.length === 0 &&
          !state.finished &&
          !state.writing);
}

function finishMaybe(stream, state) {
  var need = needFinish(stream, state);
  if (need) {
    state.finished = true;
    stream.emit('finish');
  }
  return need;
}

function endWritable(stream, state, cb) {
  state.ending = true;
  finishMaybe(stream, state);
  if (cb) {
    if (state.finished)
      process.nextTick(cb);
    else
      stream.once('finish', cb);
  }
  state.ended = true;
}

}).call(this,require('_process'))
},{"./_stream_duplex":93,"_process":91,"buffer":83,"core-util-is":98,"inherits":88,"stream":103}],98:[function(require,module,exports){
(function (Buffer){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(ar) {
  return Array.isArray(ar);
}
exports.isArray = isArray;

function isBoolean(arg) {
  return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;

function isNull(arg) {
  return arg === null;
}
exports.isNull = isNull;

function isNullOrUndefined(arg) {
  return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;

function isNumber(arg) {
  return typeof arg === 'number';
}
exports.isNumber = isNumber;

function isString(arg) {
  return typeof arg === 'string';
}
exports.isString = isString;

function isSymbol(arg) {
  return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;

function isUndefined(arg) {
  return arg === void 0;
}
exports.isUndefined = isUndefined;

function isRegExp(re) {
  return isObject(re) && objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;

function isDate(d) {
  return isObject(d) && objectToString(d) === '[object Date]';
}
exports.isDate = isDate;

function isError(e) {
  return isObject(e) &&
      (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;

function isFunction(arg) {
  return typeof arg === 'function';
}
exports.isFunction = isFunction;

function isPrimitive(arg) {
  return arg === null ||
         typeof arg === 'boolean' ||
         typeof arg === 'number' ||
         typeof arg === 'string' ||
         typeof arg === 'symbol' ||  // ES6 symbol
         typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;

function isBuffer(arg) {
  return Buffer.isBuffer(arg);
}
exports.isBuffer = isBuffer;

function objectToString(o) {
  return Object.prototype.toString.call(o);
}
}).call(this,require("buffer").Buffer)
},{"buffer":83}],99:[function(require,module,exports){
module.exports = require("./lib/_stream_passthrough.js")

},{"./lib/_stream_passthrough.js":94}],100:[function(require,module,exports){
var Stream = require('stream'); // hack to fix a circular dependency issue when used with browserify
exports = module.exports = require('./lib/_stream_readable.js');
exports.Stream = Stream;
exports.Readable = exports;
exports.Writable = require('./lib/_stream_writable.js');
exports.Duplex = require('./lib/_stream_duplex.js');
exports.Transform = require('./lib/_stream_transform.js');
exports.PassThrough = require('./lib/_stream_passthrough.js');

},{"./lib/_stream_duplex.js":93,"./lib/_stream_passthrough.js":94,"./lib/_stream_readable.js":95,"./lib/_stream_transform.js":96,"./lib/_stream_writable.js":97,"stream":103}],101:[function(require,module,exports){
module.exports = require("./lib/_stream_transform.js")

},{"./lib/_stream_transform.js":96}],102:[function(require,module,exports){
module.exports = require("./lib/_stream_writable.js")

},{"./lib/_stream_writable.js":97}],103:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

module.exports = Stream;

var EE = require('events').EventEmitter;
var inherits = require('inherits');

inherits(Stream, EE);
Stream.Readable = require('readable-stream/readable.js');
Stream.Writable = require('readable-stream/writable.js');
Stream.Duplex = require('readable-stream/duplex.js');
Stream.Transform = require('readable-stream/transform.js');
Stream.PassThrough = require('readable-stream/passthrough.js');

// Backwards-compat with node 0.4.x
Stream.Stream = Stream;



// old-style streams.  Note that the pipe method (the only relevant
// part of this class) is overridden in the Readable class.

function Stream() {
  EE.call(this);
}

Stream.prototype.pipe = function(dest, options) {
  var source = this;

  function ondata(chunk) {
    if (dest.writable) {
      if (false === dest.write(chunk) && source.pause) {
        source.pause();
      }
    }
  }

  source.on('data', ondata);

  function ondrain() {
    if (source.readable && source.resume) {
      source.resume();
    }
  }

  dest.on('drain', ondrain);

  // If the 'end' option is not supplied, dest.end() will be called when
  // source gets the 'end' or 'close' events.  Only dest.end() once.
  if (!dest._isStdio && (!options || options.end !== false)) {
    source.on('end', onend);
    source.on('close', onclose);
  }

  var didOnEnd = false;
  function onend() {
    if (didOnEnd) return;
    didOnEnd = true;

    dest.end();
  }


  function onclose() {
    if (didOnEnd) return;
    didOnEnd = true;

    if (typeof dest.destroy === 'function') dest.destroy();
  }

  // don't leave dangling pipes when there are errors.
  function onerror(er) {
    cleanup();
    if (EE.listenerCount(this, 'error') === 0) {
      throw er; // Unhandled stream error in pipe.
    }
  }

  source.on('error', onerror);
  dest.on('error', onerror);

  // remove all the event listeners that were added.
  function cleanup() {
    source.removeListener('data', ondata);
    dest.removeListener('drain', ondrain);

    source.removeListener('end', onend);
    source.removeListener('close', onclose);

    source.removeListener('error', onerror);
    dest.removeListener('error', onerror);

    source.removeListener('end', cleanup);
    source.removeListener('close', cleanup);

    dest.removeListener('close', cleanup);
  }

  source.on('end', cleanup);
  source.on('close', cleanup);

  dest.on('close', cleanup);

  dest.emit('pipe', source);

  // Allow for unix-like usage: A.pipe(B).pipe(C)
  return dest;
};

},{"events":87,"inherits":88,"readable-stream/duplex.js":92,"readable-stream/passthrough.js":99,"readable-stream/readable.js":100,"readable-stream/transform.js":101,"readable-stream/writable.js":102}],104:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var Buffer = require('buffer').Buffer;

var isBufferEncoding = Buffer.isEncoding
  || function(encoding) {
       switch (encoding && encoding.toLowerCase()) {
         case 'hex': case 'utf8': case 'utf-8': case 'ascii': case 'binary': case 'base64': case 'ucs2': case 'ucs-2': case 'utf16le': case 'utf-16le': case 'raw': return true;
         default: return false;
       }
     }


function assertEncoding(encoding) {
  if (encoding && !isBufferEncoding(encoding)) {
    throw new Error('Unknown encoding: ' + encoding);
  }
}

// StringDecoder provides an interface for efficiently splitting a series of
// buffers into a series of JS strings without breaking apart multi-byte
// characters. CESU-8 is handled as part of the UTF-8 encoding.
//
// @TODO Handling all encodings inside a single object makes it very difficult
// to reason about this code, so it should be split up in the future.
// @TODO There should be a utf8-strict encoding that rejects invalid UTF-8 code
// points as used by CESU-8.
var StringDecoder = exports.StringDecoder = function(encoding) {
  this.encoding = (encoding || 'utf8').toLowerCase().replace(/[-_]/, '');
  assertEncoding(encoding);
  switch (this.encoding) {
    case 'utf8':
      // CESU-8 represents each of Surrogate Pair by 3-bytes
      this.surrogateSize = 3;
      break;
    case 'ucs2':
    case 'utf16le':
      // UTF-16 represents each of Surrogate Pair by 2-bytes
      this.surrogateSize = 2;
      this.detectIncompleteChar = utf16DetectIncompleteChar;
      break;
    case 'base64':
      // Base-64 stores 3 bytes in 4 chars, and pads the remainder.
      this.surrogateSize = 3;
      this.detectIncompleteChar = base64DetectIncompleteChar;
      break;
    default:
      this.write = passThroughWrite;
      return;
  }

  // Enough space to store all bytes of a single character. UTF-8 needs 4
  // bytes, but CESU-8 may require up to 6 (3 bytes per surrogate).
  this.charBuffer = new Buffer(6);
  // Number of bytes received for the current incomplete multi-byte character.
  this.charReceived = 0;
  // Number of bytes expected for the current incomplete multi-byte character.
  this.charLength = 0;
};


// write decodes the given buffer and returns it as JS string that is
// guaranteed to not contain any partial multi-byte characters. Any partial
// character found at the end of the buffer is buffered up, and will be
// returned when calling write again with the remaining bytes.
//
// Note: Converting a Buffer containing an orphan surrogate to a String
// currently works, but converting a String to a Buffer (via `new Buffer`, or
// Buffer#write) will replace incomplete surrogates with the unicode
// replacement character. See https://codereview.chromium.org/121173009/ .
StringDecoder.prototype.write = function(buffer) {
  var charStr = '';
  // if our last write ended with an incomplete multibyte character
  while (this.charLength) {
    // determine how many remaining bytes this buffer has to offer for this char
    var available = (buffer.length >= this.charLength - this.charReceived) ?
        this.charLength - this.charReceived :
        buffer.length;

    // add the new bytes to the char buffer
    buffer.copy(this.charBuffer, this.charReceived, 0, available);
    this.charReceived += available;

    if (this.charReceived < this.charLength) {
      // still not enough chars in this buffer? wait for more ...
      return '';
    }

    // remove bytes belonging to the current character from the buffer
    buffer = buffer.slice(available, buffer.length);

    // get the character that was split
    charStr = this.charBuffer.slice(0, this.charLength).toString(this.encoding);

    // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
    var charCode = charStr.charCodeAt(charStr.length - 1);
    if (charCode >= 0xD800 && charCode <= 0xDBFF) {
      this.charLength += this.surrogateSize;
      charStr = '';
      continue;
    }
    this.charReceived = this.charLength = 0;

    // if there are no more bytes in this buffer, just emit our char
    if (buffer.length === 0) {
      return charStr;
    }
    break;
  }

  // determine and set charLength / charReceived
  this.detectIncompleteChar(buffer);

  var end = buffer.length;
  if (this.charLength) {
    // buffer the incomplete character bytes we got
    buffer.copy(this.charBuffer, 0, buffer.length - this.charReceived, end);
    end -= this.charReceived;
  }

  charStr += buffer.toString(this.encoding, 0, end);

  var end = charStr.length - 1;
  var charCode = charStr.charCodeAt(end);
  // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
  if (charCode >= 0xD800 && charCode <= 0xDBFF) {
    var size = this.surrogateSize;
    this.charLength += size;
    this.charReceived += size;
    this.charBuffer.copy(this.charBuffer, size, 0, size);
    buffer.copy(this.charBuffer, 0, 0, size);
    return charStr.substring(0, end);
  }

  // or just emit the charStr
  return charStr;
};

// detectIncompleteChar determines if there is an incomplete UTF-8 character at
// the end of the given buffer. If so, it sets this.charLength to the byte
// length that character, and sets this.charReceived to the number of bytes
// that are available for this character.
StringDecoder.prototype.detectIncompleteChar = function(buffer) {
  // determine how many bytes we have to check at the end of this buffer
  var i = (buffer.length >= 3) ? 3 : buffer.length;

  // Figure out if one of the last i bytes of our buffer announces an
  // incomplete char.
  for (; i > 0; i--) {
    var c = buffer[buffer.length - i];

    // See http://en.wikipedia.org/wiki/UTF-8#Description

    // 110XXXXX
    if (i == 1 && c >> 5 == 0x06) {
      this.charLength = 2;
      break;
    }

    // 1110XXXX
    if (i <= 2 && c >> 4 == 0x0E) {
      this.charLength = 3;
      break;
    }

    // 11110XXX
    if (i <= 3 && c >> 3 == 0x1E) {
      this.charLength = 4;
      break;
    }
  }
  this.charReceived = i;
};

StringDecoder.prototype.end = function(buffer) {
  var res = '';
  if (buffer && buffer.length)
    res = this.write(buffer);

  if (this.charReceived) {
    var cr = this.charReceived;
    var buf = this.charBuffer;
    var enc = this.encoding;
    res += buf.slice(0, cr).toString(enc);
  }

  return res;
};

function passThroughWrite(buffer) {
  return buffer.toString(this.encoding);
}

function utf16DetectIncompleteChar(buffer) {
  this.charReceived = buffer.length % 2;
  this.charLength = this.charReceived ? 2 : 0;
}

function base64DetectIncompleteChar(buffer) {
  this.charReceived = buffer.length % 3;
  this.charLength = this.charReceived ? 3 : 0;
}

},{"buffer":83}],105:[function(require,module,exports){
module.exports = function isBuffer(arg) {
  return arg && typeof arg === 'object'
    && typeof arg.copy === 'function'
    && typeof arg.fill === 'function'
    && typeof arg.readUInt8 === 'function';
}
},{}],106:[function(require,module,exports){
(function (process,global){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var formatRegExp = /%[sdj%]/g;
exports.format = function(f) {
  if (!isString(f)) {
    var objects = [];
    for (var i = 0; i < arguments.length; i++) {
      objects.push(inspect(arguments[i]));
    }
    return objects.join(' ');
  }

  var i = 1;
  var args = arguments;
  var len = args.length;
  var str = String(f).replace(formatRegExp, function(x) {
    if (x === '%%') return '%';
    if (i >= len) return x;
    switch (x) {
      case '%s': return String(args[i++]);
      case '%d': return Number(args[i++]);
      case '%j':
        try {
          return JSON.stringify(args[i++]);
        } catch (_) {
          return '[Circular]';
        }
      default:
        return x;
    }
  });
  for (var x = args[i]; i < len; x = args[++i]) {
    if (isNull(x) || !isObject(x)) {
      str += ' ' + x;
    } else {
      str += ' ' + inspect(x);
    }
  }
  return str;
};


// Mark that a method should not be used.
// Returns a modified function which warns once by default.
// If --no-deprecation is set, then it is a no-op.
exports.deprecate = function(fn, msg) {
  // Allow for deprecating things in the process of starting up.
  if (isUndefined(global.process)) {
    return function() {
      return exports.deprecate(fn, msg).apply(this, arguments);
    };
  }

  if (process.noDeprecation === true) {
    return fn;
  }

  var warned = false;
  function deprecated() {
    if (!warned) {
      if (process.throwDeprecation) {
        throw new Error(msg);
      } else if (process.traceDeprecation) {
        console.trace(msg);
      } else {
        console.error(msg);
      }
      warned = true;
    }
    return fn.apply(this, arguments);
  }

  return deprecated;
};


var debugs = {};
var debugEnviron;
exports.debuglog = function(set) {
  if (isUndefined(debugEnviron))
    debugEnviron = process.env.NODE_DEBUG || '';
  set = set.toUpperCase();
  if (!debugs[set]) {
    if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
      var pid = process.pid;
      debugs[set] = function() {
        var msg = exports.format.apply(exports, arguments);
        console.error('%s %d: %s', set, pid, msg);
      };
    } else {
      debugs[set] = function() {};
    }
  }
  return debugs[set];
};


/**
 * Echos the value of a value. Trys to print the value out
 * in the best way possible given the different types.
 *
 * @param {Object} obj The object to print out.
 * @param {Object} opts Optional options object that alters the output.
 */
/* legacy: obj, showHidden, depth, colors*/
function inspect(obj, opts) {
  // default options
  var ctx = {
    seen: [],
    stylize: stylizeNoColor
  };
  // legacy...
  if (arguments.length >= 3) ctx.depth = arguments[2];
  if (arguments.length >= 4) ctx.colors = arguments[3];
  if (isBoolean(opts)) {
    // legacy...
    ctx.showHidden = opts;
  } else if (opts) {
    // got an "options" object
    exports._extend(ctx, opts);
  }
  // set default options
  if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
  if (isUndefined(ctx.depth)) ctx.depth = 2;
  if (isUndefined(ctx.colors)) ctx.colors = false;
  if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
  if (ctx.colors) ctx.stylize = stylizeWithColor;
  return formatValue(ctx, obj, ctx.depth);
}
exports.inspect = inspect;


// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
inspect.colors = {
  'bold' : [1, 22],
  'italic' : [3, 23],
  'underline' : [4, 24],
  'inverse' : [7, 27],
  'white' : [37, 39],
  'grey' : [90, 39],
  'black' : [30, 39],
  'blue' : [34, 39],
  'cyan' : [36, 39],
  'green' : [32, 39],
  'magenta' : [35, 39],
  'red' : [31, 39],
  'yellow' : [33, 39]
};

// Don't use 'blue' not visible on cmd.exe
inspect.styles = {
  'special': 'cyan',
  'number': 'yellow',
  'boolean': 'yellow',
  'undefined': 'grey',
  'null': 'bold',
  'string': 'green',
  'date': 'magenta',
  // "name": intentionally not styling
  'regexp': 'red'
};


function stylizeWithColor(str, styleType) {
  var style = inspect.styles[styleType];

  if (style) {
    return '\u001b[' + inspect.colors[style][0] + 'm' + str +
           '\u001b[' + inspect.colors[style][1] + 'm';
  } else {
    return str;
  }
}


function stylizeNoColor(str, styleType) {
  return str;
}


function arrayToHash(array) {
  var hash = {};

  array.forEach(function(val, idx) {
    hash[val] = true;
  });

  return hash;
}


function formatValue(ctx, value, recurseTimes) {
  // Provide a hook for user-specified inspect functions.
  // Check that value is an object with an inspect function on it
  if (ctx.customInspect &&
      value &&
      isFunction(value.inspect) &&
      // Filter out the util module, it's inspect function is special
      value.inspect !== exports.inspect &&
      // Also filter out any prototype objects using the circular check.
      !(value.constructor && value.constructor.prototype === value)) {
    var ret = value.inspect(recurseTimes, ctx);
    if (!isString(ret)) {
      ret = formatValue(ctx, ret, recurseTimes);
    }
    return ret;
  }

  // Primitive types cannot have properties
  var primitive = formatPrimitive(ctx, value);
  if (primitive) {
    return primitive;
  }

  // Look up the keys of the object.
  var keys = Object.keys(value);
  var visibleKeys = arrayToHash(keys);

  if (ctx.showHidden) {
    keys = Object.getOwnPropertyNames(value);
  }

  // IE doesn't make error fields non-enumerable
  // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
  if (isError(value)
      && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
    return formatError(value);
  }

  // Some type of object without properties can be shortcutted.
  if (keys.length === 0) {
    if (isFunction(value)) {
      var name = value.name ? ': ' + value.name : '';
      return ctx.stylize('[Function' + name + ']', 'special');
    }
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    }
    if (isDate(value)) {
      return ctx.stylize(Date.prototype.toString.call(value), 'date');
    }
    if (isError(value)) {
      return formatError(value);
    }
  }

  var base = '', array = false, braces = ['{', '}'];

  // Make Array say that they are Array
  if (isArray(value)) {
    array = true;
    braces = ['[', ']'];
  }

  // Make functions say that they are functions
  if (isFunction(value)) {
    var n = value.name ? ': ' + value.name : '';
    base = ' [Function' + n + ']';
  }

  // Make RegExps say that they are RegExps
  if (isRegExp(value)) {
    base = ' ' + RegExp.prototype.toString.call(value);
  }

  // Make dates with properties first say the date
  if (isDate(value)) {
    base = ' ' + Date.prototype.toUTCString.call(value);
  }

  // Make error with message first say the error
  if (isError(value)) {
    base = ' ' + formatError(value);
  }

  if (keys.length === 0 && (!array || value.length == 0)) {
    return braces[0] + base + braces[1];
  }

  if (recurseTimes < 0) {
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    } else {
      return ctx.stylize('[Object]', 'special');
    }
  }

  ctx.seen.push(value);

  var output;
  if (array) {
    output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
  } else {
    output = keys.map(function(key) {
      return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
    });
  }

  ctx.seen.pop();

  return reduceToSingleString(output, base, braces);
}


function formatPrimitive(ctx, value) {
  if (isUndefined(value))
    return ctx.stylize('undefined', 'undefined');
  if (isString(value)) {
    var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
                                             .replace(/'/g, "\\'")
                                             .replace(/\\"/g, '"') + '\'';
    return ctx.stylize(simple, 'string');
  }
  if (isNumber(value))
    return ctx.stylize('' + value, 'number');
  if (isBoolean(value))
    return ctx.stylize('' + value, 'boolean');
  // For some reason typeof null is "object", so special case here.
  if (isNull(value))
    return ctx.stylize('null', 'null');
}


function formatError(value) {
  return '[' + Error.prototype.toString.call(value) + ']';
}


function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
  var output = [];
  for (var i = 0, l = value.length; i < l; ++i) {
    if (hasOwnProperty(value, String(i))) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          String(i), true));
    } else {
      output.push('');
    }
  }
  keys.forEach(function(key) {
    if (!key.match(/^\d+$/)) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          key, true));
    }
  });
  return output;
}


function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
  var name, str, desc;
  desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
  if (desc.get) {
    if (desc.set) {
      str = ctx.stylize('[Getter/Setter]', 'special');
    } else {
      str = ctx.stylize('[Getter]', 'special');
    }
  } else {
    if (desc.set) {
      str = ctx.stylize('[Setter]', 'special');
    }
  }
  if (!hasOwnProperty(visibleKeys, key)) {
    name = '[' + key + ']';
  }
  if (!str) {
    if (ctx.seen.indexOf(desc.value) < 0) {
      if (isNull(recurseTimes)) {
        str = formatValue(ctx, desc.value, null);
      } else {
        str = formatValue(ctx, desc.value, recurseTimes - 1);
      }
      if (str.indexOf('\n') > -1) {
        if (array) {
          str = str.split('\n').map(function(line) {
            return '  ' + line;
          }).join('\n').substr(2);
        } else {
          str = '\n' + str.split('\n').map(function(line) {
            return '   ' + line;
          }).join('\n');
        }
      }
    } else {
      str = ctx.stylize('[Circular]', 'special');
    }
  }
  if (isUndefined(name)) {
    if (array && key.match(/^\d+$/)) {
      return str;
    }
    name = JSON.stringify('' + key);
    if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
      name = name.substr(1, name.length - 2);
      name = ctx.stylize(name, 'name');
    } else {
      name = name.replace(/'/g, "\\'")
                 .replace(/\\"/g, '"')
                 .replace(/(^"|"$)/g, "'");
      name = ctx.stylize(name, 'string');
    }
  }

  return name + ': ' + str;
}


function reduceToSingleString(output, base, braces) {
  var numLinesEst = 0;
  var length = output.reduce(function(prev, cur) {
    numLinesEst++;
    if (cur.indexOf('\n') >= 0) numLinesEst++;
    return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
  }, 0);

  if (length > 60) {
    return braces[0] +
           (base === '' ? '' : base + '\n ') +
           ' ' +
           output.join(',\n  ') +
           ' ' +
           braces[1];
  }

  return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
}


// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(ar) {
  return Array.isArray(ar);
}
exports.isArray = isArray;

function isBoolean(arg) {
  return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;

function isNull(arg) {
  return arg === null;
}
exports.isNull = isNull;

function isNullOrUndefined(arg) {
  return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;

function isNumber(arg) {
  return typeof arg === 'number';
}
exports.isNumber = isNumber;

function isString(arg) {
  return typeof arg === 'string';
}
exports.isString = isString;

function isSymbol(arg) {
  return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;

function isUndefined(arg) {
  return arg === void 0;
}
exports.isUndefined = isUndefined;

function isRegExp(re) {
  return isObject(re) && objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;

function isDate(d) {
  return isObject(d) && objectToString(d) === '[object Date]';
}
exports.isDate = isDate;

function isError(e) {
  return isObject(e) &&
      (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;

function isFunction(arg) {
  return typeof arg === 'function';
}
exports.isFunction = isFunction;

function isPrimitive(arg) {
  return arg === null ||
         typeof arg === 'boolean' ||
         typeof arg === 'number' ||
         typeof arg === 'string' ||
         typeof arg === 'symbol' ||  // ES6 symbol
         typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;

exports.isBuffer = require('./support/isBuffer');

function objectToString(o) {
  return Object.prototype.toString.call(o);
}


function pad(n) {
  return n < 10 ? '0' + n.toString(10) : n.toString(10);
}


var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
              'Oct', 'Nov', 'Dec'];

// 26 Feb 16:19:34
function timestamp() {
  var d = new Date();
  var time = [pad(d.getHours()),
              pad(d.getMinutes()),
              pad(d.getSeconds())].join(':');
  return [d.getDate(), months[d.getMonth()], time].join(' ');
}


// log is just a thin wrapper to console.log that prepends a timestamp
exports.log = function() {
  console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
};


/**
 * Inherit the prototype methods from one constructor into another.
 *
 * The Function.prototype.inherits from lang.js rewritten as a standalone
 * function (not on Function.prototype). NOTE: If this file is to be loaded
 * during bootstrapping this function needs to be rewritten using some native
 * functions as prototype setup using normal JavaScript does not work as
 * expected during bootstrapping (see mirror.js in r114903).
 *
 * @param {function} ctor Constructor function which needs to inherit the
 *     prototype.
 * @param {function} superCtor Constructor function to inherit prototype from.
 */
exports.inherits = require('inherits');

exports._extend = function(origin, add) {
  // Don't do anything if add isn't an object
  if (!add || !isObject(add)) return origin;

  var keys = Object.keys(add);
  var i = keys.length;
  while (i--) {
    origin[keys[i]] = add[keys[i]];
  }
  return origin;
};

function hasOwnProperty(obj, prop) {
  return Object.prototype.hasOwnProperty.call(obj, prop);
}

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./support/isBuffer":105,"_process":91,"inherits":88}],107:[function(require,module,exports){
(function (global){
/**
 * @license
 * lodash 3.2.0 (Custom Build) <https://lodash.com/>
 * Build: `lodash modern -d -o ./index.js`
 * Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.7.0 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <https://lodash.com/license>
 */
;(function() {

  /** Used as a safe reference for `undefined` in pre-ES5 environments. */
  var undefined;

  /** Used as the semantic version number. */
  var VERSION = '3.2.0';

  /** Used to compose bitmasks for wrapper metadata. */
  var BIND_FLAG = 1,
      BIND_KEY_FLAG = 2,
      CURRY_BOUND_FLAG = 4,
      CURRY_FLAG = 8,
      CURRY_RIGHT_FLAG = 16,
      PARTIAL_FLAG = 32,
      PARTIAL_RIGHT_FLAG = 64,
      REARG_FLAG = 128,
      ARY_FLAG = 256;

  /** Used as default options for `_.trunc`. */
  var DEFAULT_TRUNC_LENGTH = 30,
      DEFAULT_TRUNC_OMISSION = '...';

  /** Used to detect when a function becomes hot. */
  var HOT_COUNT = 150,
      HOT_SPAN = 16;

  /** Used to indicate the type of lazy iteratees. */
  var LAZY_FILTER_FLAG = 0,
      LAZY_MAP_FLAG = 1,
      LAZY_WHILE_FLAG = 2;

  /** Used as the `TypeError` message for "Functions" methods. */
  var FUNC_ERROR_TEXT = 'Expected a function';

  /** Used as the internal argument placeholder. */
  var PLACEHOLDER = '__lodash_placeholder__';

  /** `Object#toString` result references. */
  var argsTag = '[object Arguments]',
      arrayTag = '[object Array]',
      boolTag = '[object Boolean]',
      dateTag = '[object Date]',
      errorTag = '[object Error]',
      funcTag = '[object Function]',
      mapTag = '[object Map]',
      numberTag = '[object Number]',
      objectTag = '[object Object]',
      regexpTag = '[object RegExp]',
      setTag = '[object Set]',
      stringTag = '[object String]',
      weakMapTag = '[object WeakMap]';

  var arrayBufferTag = '[object ArrayBuffer]',
      float32Tag = '[object Float32Array]',
      float64Tag = '[object Float64Array]',
      int8Tag = '[object Int8Array]',
      int16Tag = '[object Int16Array]',
      int32Tag = '[object Int32Array]',
      uint8Tag = '[object Uint8Array]',
      uint8ClampedTag = '[object Uint8ClampedArray]',
      uint16Tag = '[object Uint16Array]',
      uint32Tag = '[object Uint32Array]';

  /** Used to match empty string literals in compiled template source. */
  var reEmptyStringLeading = /\b__p \+= '';/g,
      reEmptyStringMiddle = /\b(__p \+=) '' \+/g,
      reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g;

  /** Used to match HTML entities and HTML characters. */
  var reEscapedHtml = /&(?:amp|lt|gt|quot|#39|#96);/g,
      reUnescapedHtml = /[&<>"'`]/g,
      reHasEscapedHtml = RegExp(reEscapedHtml.source),
      reHasUnescapedHtml = RegExp(reUnescapedHtml.source);

  /** Used to match template delimiters. */
  var reEscape = /<%-([\s\S]+?)%>/g,
      reEvaluate = /<%([\s\S]+?)%>/g,
      reInterpolate = /<%=([\s\S]+?)%>/g;

  /**
   * Used to match ES template delimiters.
   * See the [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-template-literal-lexical-components)
   * for more details.
   */
  var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g;

  /** Used to match `RegExp` flags from their coerced string values. */
  var reFlags = /\w*$/;

  /** Used to detect named functions. */
  var reFuncName = /^\s*function[ \n\r\t]+\w/;

  /** Used to detect hexadecimal string values. */
  var reHexPrefix = /^0[xX]/;

  /** Used to detect host constructors (Safari > 5). */
  var reHostCtor = /^\[object .+?Constructor\]$/;

  /** Used to match latin-1 supplementary letters (excluding mathematical operators). */
  var reLatin1 = /[\xc0-\xd6\xd8-\xde\xdf-\xf6\xf8-\xff]/g;

  /** Used to ensure capturing order of template delimiters. */
  var reNoMatch = /($^)/;

  /**
   * Used to match `RegExp` special characters.
   * See this [article on `RegExp` characters](http://www.regular-expressions.info/characters.html#special)
   * for more details.
   */
  var reRegExpChars = /[.*+?^${}()|[\]\/\\]/g,
      reHasRegExpChars = RegExp(reRegExpChars.source);

  /** Used to detect functions containing a `this` reference. */
  var reThis = /\bthis\b/;

  /** Used to match unescaped characters in compiled string literals. */
  var reUnescapedString = /['\n\r\u2028\u2029\\]/g;

  /** Used to match words to create compound words. */
  var reWords = (function() {
    var upper = '[A-Z\\xc0-\\xd6\\xd8-\\xde]',
        lower = '[a-z\\xdf-\\xf6\\xf8-\\xff]+';

    return RegExp(upper + '{2,}(?=' + upper + lower + ')|' + upper + '?' + lower + '|' + upper + '+|[0-9]+', 'g');
  }());

  /** Used to detect and test for whitespace. */
  var whitespace = (
    // Basic whitespace characters.
    ' \t\x0b\f\xa0\ufeff' +

    // Line terminators.
    '\n\r\u2028\u2029' +

    // Unicode category "Zs" space separators.
    '\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000'
  );

  /** Used to assign default `context` object properties. */
  var contextProps = [
    'Array', 'ArrayBuffer', 'Date', 'Error', 'Float32Array', 'Float64Array',
    'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Math', 'Number',
    'Object', 'RegExp', 'Set', 'String', '_', 'clearTimeout', 'document',
    'isFinite', 'parseInt', 'setTimeout', 'TypeError', 'Uint8Array',
    'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap',
    'window', 'WinRTError'
  ];

  /** Used to make template sourceURLs easier to identify. */
  var templateCounter = -1;

  /** Used to identify `toStringTag` values of typed arrays. */
  var typedArrayTags = {};
  typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =
  typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =
  typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =
  typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =
  typedArrayTags[uint32Tag] = true;
  typedArrayTags[argsTag] = typedArrayTags[arrayTag] =
  typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =
  typedArrayTags[dateTag] = typedArrayTags[errorTag] =
  typedArrayTags[funcTag] = typedArrayTags[mapTag] =
  typedArrayTags[numberTag] = typedArrayTags[objectTag] =
  typedArrayTags[regexpTag] = typedArrayTags[setTag] =
  typedArrayTags[stringTag] = typedArrayTags[weakMapTag] = false;

  /** Used to identify `toStringTag` values supported by `_.clone`. */
  var cloneableTags = {};
  cloneableTags[argsTag] = cloneableTags[arrayTag] =
  cloneableTags[arrayBufferTag] = cloneableTags[boolTag] =
  cloneableTags[dateTag] = cloneableTags[float32Tag] =
  cloneableTags[float64Tag] = cloneableTags[int8Tag] =
  cloneableTags[int16Tag] = cloneableTags[int32Tag] =
  cloneableTags[numberTag] = cloneableTags[objectTag] =
  cloneableTags[regexpTag] = cloneableTags[stringTag] =
  cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =
  cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;
  cloneableTags[errorTag] = cloneableTags[funcTag] =
  cloneableTags[mapTag] = cloneableTags[setTag] =
  cloneableTags[weakMapTag] = false;

  /** Used as an internal `_.debounce` options object by `_.throttle`. */
  var debounceOptions = {
    'leading': false,
    'maxWait': 0,
    'trailing': false
  };

  /** Used to map latin-1 supplementary letters to basic latin letters. */
  var deburredLetters = {
    '\xc0': 'A',  '\xc1': 'A', '\xc2': 'A', '\xc3': 'A', '\xc4': 'A', '\xc5': 'A',
    '\xe0': 'a',  '\xe1': 'a', '\xe2': 'a', '\xe3': 'a', '\xe4': 'a', '\xe5': 'a',
    '\xc7': 'C',  '\xe7': 'c',
    '\xd0': 'D',  '\xf0': 'd',
    '\xc8': 'E',  '\xc9': 'E', '\xca': 'E', '\xcb': 'E',
    '\xe8': 'e',  '\xe9': 'e', '\xea': 'e', '\xeb': 'e',
    '\xcC': 'I',  '\xcd': 'I', '\xce': 'I', '\xcf': 'I',
    '\xeC': 'i',  '\xed': 'i', '\xee': 'i', '\xef': 'i',
    '\xd1': 'N',  '\xf1': 'n',
    '\xd2': 'O',  '\xd3': 'O', '\xd4': 'O', '\xd5': 'O', '\xd6': 'O', '\xd8': 'O',
    '\xf2': 'o',  '\xf3': 'o', '\xf4': 'o', '\xf5': 'o', '\xf6': 'o', '\xf8': 'o',
    '\xd9': 'U',  '\xda': 'U', '\xdb': 'U', '\xdc': 'U',
    '\xf9': 'u',  '\xfa': 'u', '\xfb': 'u', '\xfc': 'u',
    '\xdd': 'Y',  '\xfd': 'y', '\xff': 'y',
    '\xc6': 'Ae', '\xe6': 'ae',
    '\xde': 'Th', '\xfe': 'th',
    '\xdf': 'ss'
  };

  /** Used to map characters to HTML entities. */
  var htmlEscapes = {
    '&': '&amp;',
    '<': '&lt;',
    '>': '&gt;',
    '"': '&quot;',
    "'": '&#39;',
    '`': '&#96;'
  };

  /** Used to map HTML entities to characters. */
  var htmlUnescapes = {
    '&amp;': '&',
    '&lt;': '<',
    '&gt;': '>',
    '&quot;': '"',
    '&#39;': "'",
    '&#96;': '`'
  };

  /** Used to determine if values are of the language type `Object`. */
  var objectTypes = {
    'function': true,
    'object': true
  };

  /** Used to escape characters for inclusion in compiled string literals. */
  var stringEscapes = {
    '\\': '\\',
    "'": "'",
    '\n': 'n',
    '\r': 'r',
    '\u2028': 'u2028',
    '\u2029': 'u2029'
  };

  /**
   * Used as a reference to the global object.
   *
   * The `this` value is used if it is the global object to avoid Greasemonkey's
   * restricted `window` object, otherwise the `window` object is used.
   */
  var root = (objectTypes[typeof window] && window !== (this && this.window)) ? window : this;

  /** Detect free variable `exports`. */
  var freeExports = objectTypes[typeof exports] && exports && !exports.nodeType && exports;

  /** Detect free variable `module`. */
  var freeModule = objectTypes[typeof module] && module && !module.nodeType && module;

  /** Detect free variable `global` from Node.js or Browserified code and use it as `root`. */
  var freeGlobal = freeExports && freeModule && typeof global == 'object' && global;
  if (freeGlobal && (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal || freeGlobal.self === freeGlobal)) {
    root = freeGlobal;
  }

  /** Detect the popular CommonJS extension `module.exports`. */
  var moduleExports = freeModule && freeModule.exports === freeExports && freeExports;

  /*--------------------------------------------------------------------------*/

  /**
   * The base implementation of `compareAscending` which compares values and
   * sorts them in ascending order without guaranteeing a stable sort.
   *
   * @private
   * @param {*} value The value to compare to `other`.
   * @param {*} other The value to compare to `value`.
   * @returns {number} Returns the sort order indicator for `value`.
   */
  function baseCompareAscending(value, other) {
    if (value !== other) {
      var valIsReflexive = value === value,
          othIsReflexive = other === other;

      if (value > other || !valIsReflexive || (typeof value == 'undefined' && othIsReflexive)) {
        return 1;
      }
      if (value < other || !othIsReflexive || (typeof other == 'undefined' && valIsReflexive)) {
        return -1;
      }
    }
    return 0;
  }

  /**
   * The base implementation of `_.indexOf` without support for binary searches.
   *
   * @private
   * @param {Array} array The array to search.
   * @param {*} value The value to search for.
   * @param {number} [fromIndex=0] The index to search from.
   * @returns {number} Returns the index of the matched value, else `-1`.
   */
  function baseIndexOf(array, value, fromIndex) {
    if (value !== value) {
      return indexOfNaN(array, fromIndex);
    }
    var index = (fromIndex || 0) - 1,
        length = array.length;

    while (++index < length) {
      if (array[index] === value) {
        return index;
      }
    }
    return -1;
  }

  /**
   * The base implementation of `_.sortBy` and `_.sortByAll` which uses `comparer`
   * to define the sort order of `array` and replaces criteria objects with their
   * corresponding values.
   *
   * @private
   * @param {Array} array The array to sort.
   * @param {Function} comparer The function to define sort order.
   * @returns {Array} Returns `array`.
   */
  function baseSortBy(array, comparer) {
    var length = array.length;

    array.sort(comparer);
    while (length--) {
      array[length] = array[length].value;
    }
    return array;
  }

  /**
   * Converts `value` to a string if it is not one. An empty string is returned
   * for `null` or `undefined` values.
   *
   * @private
   * @param {*} value The value to process.
   * @returns {string} Returns the string.
   */
  function baseToString(value) {
    if (typeof value == 'string') {
      return value;
    }
    return value == null ? '' : (value + '');
  }

  /**
   * Used by `_.max` and `_.min` as the default callback for string values.
   *
   * @private
   * @param {string} string The string to inspect.
   * @returns {number} Returns the code unit of the first character of the string.
   */
  function charAtCallback(string) {
    return string.charCodeAt(0);
  }

  /**
   * Used by `_.trim` and `_.trimLeft` to get the index of the first character
   * of `string` that is not found in `chars`.
   *
   * @private
   * @param {string} string The string to inspect.
   * @param {string} chars The characters to find.
   * @returns {number} Returns the index of the first character not found in `chars`.
   */
  function charsLeftIndex(string, chars) {
    var index = -1,
        length = string.length;

    while (++index < length && chars.indexOf(string.charAt(index)) > -1) {}
    return index;
  }

  /**
   * Used by `_.trim` and `_.trimRight` to get the index of the last character
   * of `string` that is not found in `chars`.
   *
   * @private
   * @param {string} string The string to inspect.
   * @param {string} chars The characters to find.
   * @returns {number} Returns the index of the last character not found in `chars`.
   */
  function charsRightIndex(string, chars) {
    var index = string.length;

    while (index-- && chars.indexOf(string.charAt(index)) > -1) {}
    return index;
  }

  /**
   * Used by `_.sortBy` to compare transformed elements of a collection and stable
   * sort them in ascending order.
   *
   * @private
   * @param {Object} object The object to compare to `other`.
   * @param {Object} other The object to compare to `object`.
   * @returns {number} Returns the sort order indicator for `object`.
   */
  function compareAscending(object, other) {
    return baseCompareAscending(object.criteria, other.criteria) || (object.index - other.index);
  }

  /**
   * Used by `_.sortByAll` to compare multiple properties of each element
   * in a collection and stable sort them in ascending order.
   *
   * @private
   * @param {Object} object The object to compare to `other`.
   * @param {Object} other The object to compare to `object`.
   * @returns {number} Returns the sort order indicator for `object`.
   */
  function compareMultipleAscending(object, other) {
    var index = -1,
        objCriteria = object.criteria,
        othCriteria = other.criteria,
        length = objCriteria.length;

    while (++index < length) {
      var result = baseCompareAscending(objCriteria[index], othCriteria[index]);
      if (result) {
        return result;
      }
    }
    // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications
    // that causes it, under certain circumstances, to provide the same value for
    // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247
    // for more details.
    //
    // This also ensures a stable sort in V8 and other engines.
    // See https://code.google.com/p/v8/issues/detail?id=90 for more details.
    return object.index - other.index;
  }

  /**
   * Used by `_.deburr` to convert latin-1 supplementary letters to basic latin letters.
   *
   * @private
   * @param {string} letter The matched letter to deburr.
   * @returns {string} Returns the deburred letter.
   */
  function deburrLetter(letter) {
    return deburredLetters[letter];
  }

  /**
   * Used by `_.escape` to convert characters to HTML entities.
   *
   * @private
   * @param {string} chr The matched character to escape.
   * @returns {string} Returns the escaped character.
   */
  function escapeHtmlChar(chr) {
    return htmlEscapes[chr];
  }

  /**
   * Used by `_.template` to escape characters for inclusion in compiled
   * string literals.
   *
   * @private
   * @param {string} chr The matched character to escape.
   * @returns {string} Returns the escaped character.
   */
  function escapeStringChar(chr) {
    return '\\' + stringEscapes[chr];
  }

  /**
   * Gets the index at which the first occurrence of `NaN` is found in `array`.
   * If `fromRight` is provided elements of `array` are iterated from right to left.
   *
   * @private
   * @param {Array} array The array to search.
   * @param {number} [fromIndex] The index to search from.
   * @param {boolean} [fromRight] Specify iterating from right to left.
   * @returns {number} Returns the index of the matched `NaN`, else `-1`.
   */
  function indexOfNaN(array, fromIndex, fromRight) {
    var length = array.length,
        index = fromRight ? (fromIndex || length) : ((fromIndex || 0) - 1);

    while ((fromRight ? index-- : ++index < length)) {
      var other = array[index];
      if (other !== other) {
        return index;
      }
    }
    return -1;
  }

  /**
   * Checks if `value` is object-like.
   *
   * @private
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
   */
  function isObjectLike(value) {
    return (value && typeof value == 'object') || false;
  }

  /**
   * Used by `trimmedLeftIndex` and `trimmedRightIndex` to determine if a
   * character code is whitespace.
   *
   * @private
   * @param {number} charCode The character code to inspect.
   * @returns {boolean} Returns `true` if `charCode` is whitespace, else `false`.
   */
  function isSpace(charCode) {
    return ((charCode <= 160 && (charCode >= 9 && charCode <= 13) || charCode == 32 || charCode == 160) || charCode == 5760 || charCode == 6158 ||
      (charCode >= 8192 && (charCode <= 8202 || charCode == 8232 || charCode == 8233 || charCode == 8239 || charCode == 8287 || charCode == 12288 || charCode == 65279)));
  }

  /**
   * Replaces all `placeholder` elements in `array` with an internal placeholder
   * and returns an array of their indexes.
   *
   * @private
   * @param {Array} array The array to modify.
   * @param {*} placeholder The placeholder to replace.
   * @returns {Array} Returns the new array of placeholder indexes.
   */
  function replaceHolders(array, placeholder) {
    var index = -1,
        length = array.length,
        resIndex = -1,
        result = [];

    while (++index < length) {
      if (array[index] === placeholder) {
        array[index] = PLACEHOLDER;
        result[++resIndex] = index;
      }
    }
    return result;
  }

  /**
   * An implementation of `_.uniq` optimized for sorted arrays without support
   * for callback shorthands and `this` binding.
   *
   * @private
   * @param {Array} array The array to inspect.
   * @param {Function} [iteratee] The function invoked per iteration.
   * @returns {Array} Returns the new duplicate-value-free array.
   */
  function sortedUniq(array, iteratee) {
    var seen,
        index = -1,
        length = array.length,
        resIndex = -1,
        result = [];

    while (++index < length) {
      var value = array[index],
          computed = iteratee ? iteratee(value, index, array) : value;

      if (!index || seen !== computed) {
        seen = computed;
        result[++resIndex] = value;
      }
    }
    return result;
  }

  /**
   * Used by `_.trim` and `_.trimLeft` to get the index of the first non-whitespace
   * character of `string`.
   *
   * @private
   * @param {string} string The string to inspect.
   * @returns {number} Returns the index of the first non-whitespace character.
   */
  function trimmedLeftIndex(string) {
    var index = -1,
        length = string.length;

    while (++index < length && isSpace(string.charCodeAt(index))) {}
    return index;
  }

  /**
   * Used by `_.trim` and `_.trimRight` to get the index of the last non-whitespace
   * character of `string`.
   *
   * @private
   * @param {string} string The string to inspect.
   * @returns {number} Returns the index of the last non-whitespace character.
   */
  function trimmedRightIndex(string) {
    var index = string.length;

    while (index-- && isSpace(string.charCodeAt(index))) {}
    return index;
  }

  /**
   * Used by `_.unescape` to convert HTML entities to characters.
   *
   * @private
   * @param {string} chr The matched character to unescape.
   * @returns {string} Returns the unescaped character.
   */
  function unescapeHtmlChar(chr) {
    return htmlUnescapes[chr];
  }

  /*--------------------------------------------------------------------------*/

  /**
   * Create a new pristine `lodash` function using the given `context` object.
   *
   * @static
   * @memberOf _
   * @category Utility
   * @param {Object} [context=root] The context object.
   * @returns {Function} Returns a new `lodash` function.
   * @example
   *
   * _.mixin({ 'add': function(a, b) { return a + b; } });
   *
   * var lodash = _.runInContext();
   * lodash.mixin({ 'sub': function(a, b) { return a - b; } });
   *
   * _.isFunction(_.add);
   * // => true
   * _.isFunction(_.sub);
   * // => false
   *
   * lodash.isFunction(lodash.add);
   * // => false
   * lodash.isFunction(lodash.sub);
   * // => true
   *
   * // using `context` to mock `Date#getTime` use in `_.now`
   * var mock = _.runInContext({
   *   'Date': function() {
   *     return { 'getTime': getTimeMock };
   *   }
   * });
   *
   * // or creating a suped-up `defer` in Node.js
   * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer;
   */
  function runInContext(context) {
    // Avoid issues with some ES3 environments that attempt to use values, named
    // after built-in constructors like `Object`, for the creation of literals.
    // ES5 clears this up by stating that literals must use built-in constructors.
    // See https://es5.github.io/#x11.1.5 for more details.
    context = context ? _.defaults(root.Object(), context, _.pick(root, contextProps)) : root;

    /** Native constructor references. */
    var Array = context.Array,
        Date = context.Date,
        Error = context.Error,
        Function = context.Function,
        Math = context.Math,
        Number = context.Number,
        Object = context.Object,
        RegExp = context.RegExp,
        String = context.String,
        TypeError = context.TypeError;

    /** Used for native method references. */
    var arrayProto = Array.prototype,
        objectProto = Object.prototype;

    /** Used to detect DOM support. */
    var document = (document = context.window) && document.document;

    /** Used to resolve the decompiled source of functions. */
    var fnToString = Function.prototype.toString;

    /** Used to the length of n-tuples for `_.unzip`. */
    var getLength = baseProperty('length');

    /** Used to check objects for own properties. */
    var hasOwnProperty = objectProto.hasOwnProperty;

    /** Used to generate unique IDs. */
    var idCounter = 0;

    /**
     * Used to resolve the `toStringTag` of values.
     * See the [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.tostring)
     * for more details.
     */
    var objToString = objectProto.toString;

    /** Used to restore the original `_` reference in `_.noConflict`. */
    var oldDash = context._;

    /** Used to detect if a method is native. */
    var reNative = RegExp('^' +
      escapeRegExp(objToString)
      .replace(/toString|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
    );

    /** Native method references. */
    var ArrayBuffer = isNative(ArrayBuffer = context.ArrayBuffer) && ArrayBuffer,
        bufferSlice = isNative(bufferSlice = ArrayBuffer && new ArrayBuffer(0).slice) && bufferSlice,
        ceil = Math.ceil,
        clearTimeout = context.clearTimeout,
        floor = Math.floor,
        getPrototypeOf = isNative(getPrototypeOf = Object.getPrototypeOf) && getPrototypeOf,
        push = arrayProto.push,
        propertyIsEnumerable = objectProto.propertyIsEnumerable,
        Set = isNative(Set = context.Set) && Set,
        setTimeout = context.setTimeout,
        splice = arrayProto.splice,
        Uint8Array = isNative(Uint8Array = context.Uint8Array) && Uint8Array,
        WeakMap = isNative(WeakMap = context.WeakMap) && WeakMap;

    /** Used to clone array buffers. */
    var Float64Array = (function() {
      // Safari 5 errors when using an array buffer to initialize a typed array
      // where the array buffer's `byteLength` is not a multiple of the typed
      // array's `BYTES_PER_ELEMENT`.
      try {
        var func = isNative(func = context.Float64Array) && func,
            result = new func(new ArrayBuffer(10), 0, 1) && func;
      } catch(e) {}
      return result;
    }());

    /* Native method references for those with the same name as other `lodash` methods. */
    var nativeIsArray = isNative(nativeIsArray = Array.isArray) && nativeIsArray,
        nativeCreate = isNative(nativeCreate = Object.create) && nativeCreate,
        nativeIsFinite = context.isFinite,
        nativeKeys = isNative(nativeKeys = Object.keys) && nativeKeys,
        nativeMax = Math.max,
        nativeMin = Math.min,
        nativeNow = isNative(nativeNow = Date.now) && nativeNow,
        nativeNumIsFinite = isNative(nativeNumIsFinite = Number.isFinite) && nativeNumIsFinite,
        nativeParseInt = context.parseInt,
        nativeRandom = Math.random;

    /** Used as references for `-Infinity` and `Infinity`. */
    var NEGATIVE_INFINITY = Number.NEGATIVE_INFINITY,
        POSITIVE_INFINITY = Number.POSITIVE_INFINITY;

    /** Used as references for the maximum length and index of an array. */
    var MAX_ARRAY_LENGTH = Math.pow(2, 32) - 1,
        MAX_ARRAY_INDEX =  MAX_ARRAY_LENGTH - 1,
        HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;

    /** Used as the size, in bytes, of each `Float64Array` element. */
    var FLOAT64_BYTES_PER_ELEMENT = Float64Array ? Float64Array.BYTES_PER_ELEMENT : 0;

    /**
     * Used as the maximum length of an array-like value.
     * See the [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-number.max_safe_integer)
     * for more details.
     */
    var MAX_SAFE_INTEGER = Math.pow(2, 53) - 1;

    /** Used to store function metadata. */
    var metaMap = WeakMap && new WeakMap;

    /*------------------------------------------------------------------------*/

    /**
     * Creates a `lodash` object which wraps `value` to enable implicit chaining.
     * Methods that operate on and return arrays, collections, and functions can
     * be chained together. Methods that return a boolean or single value will
     * automatically end the chain returning the unwrapped value. Explicit chaining
     * may be enabled using `_.chain`. The execution of chained methods is lazy,
     * that is, execution is deferred until `_#value` is implicitly or explicitly
     * called.
     *
     * Lazy evaluation allows several methods to support shortcut fusion. Shortcut
     * fusion is an optimization that merges iteratees to avoid creating intermediate
     * arrays and reduce the number of iteratee executions.
     *
     * Chaining is supported in custom builds as long as the `_#value` method is
     * directly or indirectly included in the build.
     *
     * In addition to lodash methods, wrappers also have the following `Array` methods:
     * `concat`, `join`, `pop`, `push`, `reverse`, `shift`, `slice`, `sort`, `splice`,
     * and `unshift`
     *
     * The wrapper methods that support shortcut fusion are:
     * `compact`, `drop`, `dropRight`, `dropRightWhile`, `dropWhile`, `filter`,
     * `first`, `initial`, `last`, `map`, `pluck`, `reject`, `rest`, `reverse`,
     * `slice`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, `toArray`,
     * and `where`
     *
     * The chainable wrapper methods are:
     * `after`, `ary`, `assign`, `at`, `before`, `bind`, `bindAll`, `bindKey`,
     * `callback`, `chain`, `chunk`, `commit`, `compact`, `concat`, `constant`,
     * `countBy`, `create`, `curry`, `debounce`, `defaults`, `defer`, `delay`,
     * `difference`, `drop`, `dropRight`, `dropRightWhile`, `dropWhile`, `fill`,
     * `filter`, `flatten`, `flattenDeep`, `flow`, `flowRight`, `forEach`,
     * `forEachRight`, `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `functions`,
     * `groupBy`, `indexBy`, `initial`, `intersection`, `invert`, `invoke`, `keys`,
     * `keysIn`, `map`, `mapValues`, `matches`, `memoize`, `merge`, `mixin`,
     * `negate`, `noop`, `omit`, `once`, `pairs`, `partial`, `partialRight`,
     * `partition`, `pick`, `plant`, `pluck`, `property`, `propertyOf`, `pull`,
     * `pullAt`, `push`, `range`, `rearg`, `reject`, `remove`, `rest`, `reverse`,
     * `shuffle`, `slice`, `sort`, `sortBy`, `sortByAll`, `splice`, `spread`,
     * `take`, `takeRight`, `takeRightWhile`, `takeWhile`, `tap`, `throttle`,
     * `thru`, `times`, `toArray`, `toPlainObject`, `transform`, `union`, `uniq`,
     * `unshift`, `unzip`, `values`, `valuesIn`, `where`, `without`, `wrap`, `xor`,
     * `zip`, and `zipObject`
     *
     * The wrapper methods that are **not** chainable by default are:
     * `attempt`, `camelCase`, `capitalize`, `clone`, `cloneDeep`, `deburr`,
     * `endsWith`, `escape`, `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`,
     * `findLast`, `findLastIndex`, `findLastKey`, `findWhere`, `first`, `has`,
     * `identity`, `includes`, `indexOf`, `isArguments`, `isArray`, `isBoolean`,
     * `isDate`, `isElement`, `isEmpty`, `isEqual`, `isError`, `isFinite`,
     * `isFunction`, `isMatch`, `isNative`, `isNaN`, `isNull`, `isNumber`,
     * `isObject`, `isPlainObject`, `isRegExp`, `isString`, `isUndefined`,
     * `isTypedArray`, `join`, `kebabCase`, `last`, `lastIndexOf`, `max`, `min`,
     * `noConflict`, `now`, `pad`, `padLeft`, `padRight`, `parseInt`, `pop`,
     * `random`, `reduce`, `reduceRight`, `repeat`, `result`, `runInContext`,
     * `shift`, `size`, `snakeCase`, `some`, `sortedIndex`, `sortedLastIndex`,
     * `startCase`, `startsWith`, `template`, `trim`, `trimLeft`, `trimRight`,
     * `trunc`, `unescape`, `uniqueId`, `value`, and `words`
     *
     * The wrapper method `sample` will return a wrapped value when `n` is provided,
     * otherwise an unwrapped value is returned.
     *
     * @name _
     * @constructor
     * @category Chain
     * @param {*} value The value to wrap in a `lodash` instance.
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var wrapped = _([1, 2, 3]);
     *
     * // returns an unwrapped value
     * wrapped.reduce(function(sum, n) { return sum + n; });
     * // => 6
     *
     * // returns a wrapped value
     * var squares = wrapped.map(function(n) { return n * n; });
     *
     * _.isArray(squares);
     * // => false
     *
     * _.isArray(squares.value());
     * // => true
     */
    function lodash(value) {
      if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) {
        if (value instanceof LodashWrapper) {
          return value;
        }
        if (hasOwnProperty.call(value, '__chain__') && hasOwnProperty.call(value, '__wrapped__')) {
          return wrapperClone(value);
        }
      }
      return new LodashWrapper(value);
    }

    /**
     * The base constructor for creating `lodash` wrapper objects.
     *
     * @private
     * @param {*} value The value to wrap.
     * @param {boolean} [chainAll] Enable chaining for all wrapper methods.
     * @param {Array} [actions=[]] Actions to peform to resolve the unwrapped value.
     */
    function LodashWrapper(value, chainAll, actions) {
      this.__wrapped__ = value;
      this.__actions__ = actions || [];
      this.__chain__ = !!chainAll;
    }

    /**
     * An object environment feature flags.
     *
     * @static
     * @memberOf _
     * @type Object
     */
    var support = lodash.support = {};

    (function(x) {

      /**
       * Detect if functions can be decompiled by `Function#toString`
       * (all but Firefox OS certified apps, older Opera mobile browsers, and
       * the PlayStation 3; forced `false` for Windows 8 apps).
       *
       * @memberOf _.support
       * @type boolean
       */
      support.funcDecomp = !isNative(context.WinRTError) && reThis.test(runInContext);

      /**
       * Detect if `Function#name` is supported (all but IE).
       *
       * @memberOf _.support
       * @type boolean
       */
      support.funcNames = typeof Function.name == 'string';

      /**
       * Detect if the DOM is supported.
       *
       * @memberOf _.support
       * @type boolean
       */
      try {
        support.dom = document.createDocumentFragment().nodeType === 11;
      } catch(e) {
        support.dom = false;
      }

      /**
       * Detect if `arguments` object indexes are non-enumerable.
       *
       * In Firefox < 4, IE < 9, PhantomJS, and Safari < 5.1 `arguments` object
       * indexes are non-enumerable. Chrome < 25 and Node.js < 0.11.0 treat
       * `arguments` object indexes as non-enumerable and fail `hasOwnProperty`
       * checks for indexes that exceed their function's formal parameters with
       * associated values of `0`.
       *
       * @memberOf _.support
       * @type boolean
       */
      try {
        support.nonEnumArgs = !propertyIsEnumerable.call(arguments, 1);
      } catch(e) {
        support.nonEnumArgs = true;
      }
    }(0, 0));

    /**
     * By default, the template delimiters used by lodash are like those in
     * embedded Ruby (ERB). Change the following template settings to use
     * alternative delimiters.
     *
     * @static
     * @memberOf _
     * @type Object
     */
    lodash.templateSettings = {

      /**
       * Used to detect `data` property values to be HTML-escaped.
       *
       * @memberOf _.templateSettings
       * @type RegExp
       */
      'escape': reEscape,

      /**
       * Used to detect code to be evaluated.
       *
       * @memberOf _.templateSettings
       * @type RegExp
       */
      'evaluate': reEvaluate,

      /**
       * Used to detect `data` property values to inject.
       *
       * @memberOf _.templateSettings
       * @type RegExp
       */
      'interpolate': reInterpolate,

      /**
       * Used to reference the data object in the template text.
       *
       * @memberOf _.templateSettings
       * @type string
       */
      'variable': '',

      /**
       * Used to import variables into the compiled template.
       *
       * @memberOf _.templateSettings
       * @type Object
       */
      'imports': {

        /**
         * A reference to the `lodash` function.
         *
         * @memberOf _.templateSettings.imports
         * @type Function
         */
        '_': lodash
      }
    };

    /*------------------------------------------------------------------------*/

    /**
     * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation.
     *
     * @private
     * @param {*} value The value to wrap.
     */
    function LazyWrapper(value) {
      this.__wrapped__ = value;
      this.__actions__ = null;
      this.__dir__ = 1;
      this.__dropCount__ = 0;
      this.__filtered__ = false;
      this.__iteratees__ = null;
      this.__takeCount__ = POSITIVE_INFINITY;
      this.__views__ = null;
    }

    /**
     * Creates a clone of the lazy wrapper object.
     *
     * @private
     * @name clone
     * @memberOf LazyWrapper
     * @returns {Object} Returns the cloned `LazyWrapper` object.
     */
    function lazyClone() {
      var actions = this.__actions__,
          iteratees = this.__iteratees__,
          views = this.__views__,
          result = new LazyWrapper(this.__wrapped__);

      result.__actions__ = actions ? arrayCopy(actions) : null;
      result.__dir__ = this.__dir__;
      result.__dropCount__ = this.__dropCount__;
      result.__filtered__ = this.__filtered__;
      result.__iteratees__ = iteratees ? arrayCopy(iteratees) : null;
      result.__takeCount__ = this.__takeCount__;
      result.__views__ = views ? arrayCopy(views) : null;
      return result;
    }

    /**
     * Reverses the direction of lazy iteration.
     *
     * @private
     * @name reverse
     * @memberOf LazyWrapper
     * @returns {Object} Returns the new reversed `LazyWrapper` object.
     */
    function lazyReverse() {
      if (this.__filtered__) {
        var result = new LazyWrapper(this);
        result.__dir__ = -1;
        result.__filtered__ = true;
      } else {
        result = this.clone();
        result.__dir__ *= -1;
      }
      return result;
    }

    /**
     * Extracts the unwrapped value from its lazy wrapper.
     *
     * @private
     * @name value
     * @memberOf LazyWrapper
     * @returns {*} Returns the unwrapped value.
     */
    function lazyValue() {
      var array = this.__wrapped__.value();
      if (!isArray(array)) {
        return baseWrapperValue(array, this.__actions__);
      }
      var dir = this.__dir__,
          isRight = dir < 0,
          view = getView(0, array.length, this.__views__),
          start = view.start,
          end = view.end,
          length = end - start,
          dropCount = this.__dropCount__,
          takeCount = nativeMin(length, this.__takeCount__),
          index = isRight ? end : start - 1,
          iteratees = this.__iteratees__,
          iterLength = iteratees ? iteratees.length : 0,
          resIndex = 0,
          result = [];

      outer:
      while (length-- && resIndex < takeCount) {
        index += dir;

        var iterIndex = -1,
            value = array[index];

        while (++iterIndex < iterLength) {
          var data = iteratees[iterIndex],
              iteratee = data.iteratee,
              computed = iteratee(value, index, array),
              type = data.type;

          if (type == LAZY_MAP_FLAG) {
            value = computed;
          } else if (!computed) {
            if (type == LAZY_FILTER_FLAG) {
              continue outer;
            } else {
              break outer;
            }
          }
        }
        if (dropCount) {
          dropCount--;
        } else {
          result[resIndex++] = value;
        }
      }
      return result;
    }

    /*------------------------------------------------------------------------*/

    /**
     * Creates a cache object to store key/value pairs.
     *
     * @private
     * @static
     * @name Cache
     * @memberOf _.memoize
     */
    function MapCache() {
      this.__data__ = {};
    }

    /**
     * Removes `key` and its value from the cache.
     *
     * @private
     * @name delete
     * @memberOf _.memoize.Cache
     * @param {string} key The key of the value to remove.
     * @returns {boolean} Returns `true` if the entry was removed successfully, else `false`.
     */
    function mapDelete(key) {
      return this.has(key) && delete this.__data__[key];
    }

    /**
     * Gets the cached value for `key`.
     *
     * @private
     * @name get
     * @memberOf _.memoize.Cache
     * @param {string} key The key of the value to get.
     * @returns {*} Returns the cached value.
     */
    function mapGet(key) {
      return key == '__proto__' ? undefined : this.__data__[key];
    }

    /**
     * Checks if a cached value for `key` exists.
     *
     * @private
     * @name has
     * @memberOf _.memoize.Cache
     * @param {string} key The key of the entry to check.
     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
     */
    function mapHas(key) {
      return key != '__proto__' && hasOwnProperty.call(this.__data__, key);
    }

    /**
     * Adds `value` to `key` of the cache.
     *
     * @private
     * @name set
     * @memberOf _.memoize.Cache
     * @param {string} key The key of the value to cache.
     * @param {*} value The value to cache.
     * @returns {Object} Returns the cache object.
     */
    function mapSet(key, value) {
      if (key != '__proto__') {
        this.__data__[key] = value;
      }
      return this;
    }

    /*------------------------------------------------------------------------*/

    /**
     *
     * Creates a cache object to store unique values.
     *
     * @private
     * @param {Array} [values] The values to cache.
     */
    function SetCache(values) {
      var length = values ? values.length : 0;

      this.data = { 'hash': nativeCreate(null), 'set': new Set };
      while (length--) {
        this.push(values[length]);
      }
    }

    /**
     * Checks if `value` is in `cache` mimicking the return signature of
     * `_.indexOf` by returning `0` if the value is found, else `-1`.
     *
     * @private
     * @param {Object} cache The cache to search.
     * @param {*} value The value to search for.
     * @returns {number} Returns `0` if `value` is found, else `-1`.
     */
    function cacheIndexOf(cache, value) {
      var data = cache.data,
          result = (typeof value == 'string' || isObject(value)) ? data.set.has(value) : data.hash[value];

      return result ? 0 : -1;
    }

    /**
     * Adds `value` to the cache.
     *
     * @private
     * @name push
     * @memberOf SetCache
     * @param {*} value The value to cache.
     */
    function cachePush(value) {
      var data = this.data;
      if (typeof value == 'string' || isObject(value)) {
        data.set.add(value);
      } else {
        data.hash[value] = true;
      }
    }

    /*------------------------------------------------------------------------*/

    /**
     * Copies the values of `source` to `array`.
     *
     * @private
     * @param {Array} source The array to copy values from.
     * @param {Array} [array=[]] The array to copy values to.
     * @returns {Array} Returns `array`.
     */
    function arrayCopy(source, array) {
      var index = -1,
          length = source.length;

      array || (array = Array(length));
      while (++index < length) {
        array[index] = source[index];
      }
      return array;
    }

    /**
     * A specialized version of `_.forEach` for arrays without support for callback
     * shorthands or `this` binding.
     *
     * @private
     * @param {Array} array The array to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array} Returns `array`.
     */
    function arrayEach(array, iteratee) {
      var index = -1,
          length = array.length;

      while (++index < length) {
        if (iteratee(array[index], index, array) === false) {
          break;
        }
      }
      return array;
    }

    /**
     * A specialized version of `_.forEachRight` for arrays without support for
     * callback shorthands or `this` binding.
     *
     * @private
     * @param {Array} array The array to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array} Returns `array`.
     */
    function arrayEachRight(array, iteratee) {
      var length = array.length;

      while (length--) {
        if (iteratee(array[length], length, array) === false) {
          break;
        }
      }
      return array;
    }

    /**
     * A specialized version of `_.every` for arrays without support for callback
     * shorthands or `this` binding.
     *
     * @private
     * @param {Array} array The array to iterate over.
     * @param {Function} predicate The function invoked per iteration.
     * @returns {boolean} Returns `true` if all elements pass the predicate check,
     *  else `false`.
     */
    function arrayEvery(array, predicate) {
      var index = -1,
          length = array.length;

      while (++index < length) {
        if (!predicate(array[index], index, array)) {
          return false;
        }
      }
      return true;
    }

    /**
     * A specialized version of `_.filter` for arrays without support for callback
     * shorthands or `this` binding.
     *
     * @private
     * @param {Array} array The array to iterate over.
     * @param {Function} predicate The function invoked per iteration.
     * @returns {Array} Returns the new filtered array.
     */
    function arrayFilter(array, predicate) {
      var index = -1,
          length = array.length,
          resIndex = -1,
          result = [];

      while (++index < length) {
        var value = array[index];
        if (predicate(value, index, array)) {
          result[++resIndex] = value;
        }
      }
      return result;
    }

    /**
     * A specialized version of `_.map` for arrays without support for callback
     * shorthands or `this` binding.
     *
     * @private
     * @param {Array} array The array to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array} Returns the new mapped array.
     */
    function arrayMap(array, iteratee) {
      var index = -1,
          length = array.length,
          result = Array(length);

      while (++index < length) {
        result[index] = iteratee(array[index], index, array);
      }
      return result;
    }

    /**
     * A specialized version of `_.max` for arrays without support for iteratees.
     *
     * @private
     * @param {Array} array The array to iterate over.
     * @returns {*} Returns the maximum value.
     */
    function arrayMax(array) {
      var index = -1,
          length = array.length,
          result = NEGATIVE_INFINITY;

      while (++index < length) {
        var value = array[index];
        if (value > result) {
          result = value;
        }
      }
      return result;
    }

    /**
     * A specialized version of `_.min` for arrays without support for iteratees.
     *
     * @private
     * @param {Array} array The array to iterate over.
     * @returns {*} Returns the minimum value.
     */
    function arrayMin(array) {
      var index = -1,
          length = array.length,
          result = POSITIVE_INFINITY;

      while (++index < length) {
        var value = array[index];
        if (value < result) {
          result = value;
        }
      }
      return result;
    }

    /**
     * A specialized version of `_.reduce` for arrays without support for callback
     * shorthands or `this` binding.
     *
     * @private
     * @param {Array} array The array to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @param {*} [accumulator] The initial value.
     * @param {boolean} [initFromArray] Specify using the first element of `array`
     *  as the initial value.
     * @returns {*} Returns the accumulated value.
     */
    function arrayReduce(array, iteratee, accumulator, initFromArray) {
      var index = -1,
          length = array.length;

      if (initFromArray && length) {
        accumulator = array[++index];
      }
      while (++index < length) {
        accumulator = iteratee(accumulator, array[index], index, array);
      }
      return accumulator;
    }

    /**
     * A specialized version of `_.reduceRight` for arrays without support for
     * callback shorthands or `this` binding.
     *
     * @private
     * @param {Array} array The array to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @param {*} [accumulator] The initial value.
     * @param {boolean} [initFromArray] Specify using the last element of `array`
     *  as the initial value.
     * @returns {*} Returns the accumulated value.
     */
    function arrayReduceRight(array, iteratee, accumulator, initFromArray) {
      var length = array.length;
      if (initFromArray && length) {
        accumulator = array[--length];
      }
      while (length--) {
        accumulator = iteratee(accumulator, array[length], length, array);
      }
      return accumulator;
    }

    /**
     * A specialized version of `_.some` for arrays without support for callback
     * shorthands or `this` binding.
     *
     * @private
     * @param {Array} array The array to iterate over.
     * @param {Function} predicate The function invoked per iteration.
     * @returns {boolean} Returns `true` if any element passes the predicate check,
     *  else `false`.
     */
    function arraySome(array, predicate) {
      var index = -1,
          length = array.length;

      while (++index < length) {
        if (predicate(array[index], index, array)) {
          return true;
        }
      }
      return false;
    }

    /**
     * Used by `_.defaults` to customize its `_.assign` use.
     *
     * @private
     * @param {*} objectValue The destination object property value.
     * @param {*} sourceValue The source object property value.
     * @returns {*} Returns the value to assign to the destination object.
     */
    function assignDefaults(objectValue, sourceValue) {
      return typeof objectValue == 'undefined' ? sourceValue : objectValue;
    }

    /**
     * Used by `_.template` to customize its `_.assign` use.
     *
     * **Note:** This method is like `assignDefaults` except that it ignores
     * inherited property values when checking if a property is `undefined`.
     *
     * @private
     * @param {*} objectValue The destination object property value.
     * @param {*} sourceValue The source object property value.
     * @param {string} key The key associated with the object and source values.
     * @param {Object} object The destination object.
     * @returns {*} Returns the value to assign to the destination object.
     */
    function assignOwnDefaults(objectValue, sourceValue, key, object) {
      return (typeof objectValue == 'undefined' || !hasOwnProperty.call(object, key))
        ? sourceValue
        : objectValue;
    }

    /**
     * The base implementation of `_.assign` without support for argument juggling,
     * multiple sources, and `this` binding `customizer` functions.
     *
     * @private
     * @param {Object} object The destination object.
     * @param {Object} source The source object.
     * @param {Function} [customizer] The function to customize assigning values.
     * @returns {Object} Returns the destination object.
     */
    function baseAssign(object, source, customizer) {
      var props = keys(source);
      if (!customizer) {
        return baseCopy(source, object, props);
      }
      var index = -1,
          length = props.length;

      while (++index < length) {
        var key = props[index],
            value = object[key],
            result = customizer(value, source[key], key, object, source);

        if ((result === result ? result !== value : value === value) ||
            (typeof value == 'undefined' && !(key in object))) {
          object[key] = result;
        }
      }
      return object;
    }

    /**
     * The base implementation of `_.at` without support for strings and individual
     * key arguments.
     *
     * @private
     * @param {Array|Object} collection The collection to iterate over.
     * @param {number[]|string[]} [props] The property names or indexes of elements to pick.
     * @returns {Array} Returns the new array of picked elements.
     */
    function baseAt(collection, props) {
      var index = -1,
          length = collection.length,
          isArr = isLength(length),
          propsLength = props.length,
          result = Array(propsLength);

      while(++index < propsLength) {
        var key = props[index];
        if (isArr) {
          key = parseFloat(key);
          result[index] = isIndex(key, length) ? collection[key] : undefined;
        } else {
          result[index] = collection[key];
        }
      }
      return result;
    }

    /**
     * Copies the properties of `source` to `object`.
     *
     * @private
     * @param {Object} source The object to copy properties from.
     * @param {Object} [object={}] The object to copy properties to.
     * @param {Array} props The property names to copy.
     * @returns {Object} Returns `object`.
     */
    function baseCopy(source, object, props) {
      if (!props) {
        props = object;
        object = {};
      }
      var index = -1,
          length = props.length;

      while (++index < length) {
        var key = props[index];
        object[key] = source[key];
      }
      return object;
    }

    /**
     * The base implementation of `_.bindAll` without support for individual
     * method name arguments.
     *
     * @private
     * @param {Object} object The object to bind and assign the bound methods to.
     * @param {string[]} methodNames The object method names to bind.
     * @returns {Object} Returns `object`.
     */
    function baseBindAll(object, methodNames) {
      var index = -1,
          length = methodNames.length;

      while (++index < length) {
        var key = methodNames[index];
        object[key] = createWrapper(object[key], BIND_FLAG, object);
      }
      return object;
    }

    /**
     * The base implementation of `_.callback` which supports specifying the
     * number of arguments to provide to `func`.
     *
     * @private
     * @param {*} [func=_.identity] The value to convert to a callback.
     * @param {*} [thisArg] The `this` binding of `func`.
     * @param {number} [argCount] The number of arguments to provide to `func`.
     * @returns {Function} Returns the callback.
     */
    function baseCallback(func, thisArg, argCount) {
      var type = typeof func;
      if (type == 'function') {
        return (typeof thisArg != 'undefined' && isBindable(func))
          ? bindCallback(func, thisArg, argCount)
          : func;
      }
      if (func == null) {
        return identity;
      }
      if (type == 'object') {
        return baseMatches(func);
      }
      return typeof thisArg == 'undefined'
        ? baseProperty(func + '')
        : baseMatchesProperty(func + '', thisArg);
    }

    /**
     * The base implementation of `_.clone` without support for argument juggling
     * and `this` binding `customizer` functions.
     *
     * @private
     * @param {*} value The value to clone.
     * @param {boolean} [isDeep] Specify a deep clone.
     * @param {Function} [customizer] The function to customize cloning values.
     * @param {string} [key] The key of `value`.
     * @param {Object} [object] The object `value` belongs to.
     * @param {Array} [stackA=[]] Tracks traversed source objects.
     * @param {Array} [stackB=[]] Associates clones with source counterparts.
     * @returns {*} Returns the cloned value.
     */
    function baseClone(value, isDeep, customizer, key, object, stackA, stackB) {
      var result;
      if (customizer) {
        result = object ? customizer(value, key, object) : customizer(value);
      }
      if (typeof result != 'undefined') {
        return result;
      }
      if (!isObject(value)) {
        return value;
      }
      var isArr = isArray(value);
      if (isArr) {
        result = initCloneArray(value);
        if (!isDeep) {
          return arrayCopy(value, result);
        }
      } else {
        var tag = objToString.call(value),
            isFunc = tag == funcTag;

        if (tag == objectTag || tag == argsTag || (isFunc && !object)) {
          result = initCloneObject(isFunc ? {} : value);
          if (!isDeep) {
            return baseCopy(value, result, keys(value));
          }
        } else {
          return cloneableTags[tag]
            ? initCloneByTag(value, tag, isDeep)
            : (object ? value : {});
        }
      }
      // Check for circular references and return corresponding clone.
      stackA || (stackA = []);
      stackB || (stackB = []);

      var length = stackA.length;
      while (length--) {
        if (stackA[length] == value) {
          return stackB[length];
        }
      }
      // Add the source value to the stack of traversed objects and associate it with its clone.
      stackA.push(value);
      stackB.push(result);

      // Recursively populate clone (susceptible to call stack limits).
      (isArr ? arrayEach : baseForOwn)(value, function(subValue, key) {
        result[key] = baseClone(subValue, isDeep, customizer, key, value, stackA, stackB);
      });
      return result;
    }

    /**
     * The base implementation of `_.create` without support for assigning
     * properties to the created object.
     *
     * @private
     * @param {Object} prototype The object to inherit from.
     * @returns {Object} Returns the new object.
     */
    var baseCreate = (function() {
      function Object() {}
      return function(prototype) {
        if (isObject(prototype)) {
          Object.prototype = prototype;
          var result = new Object;
          Object.prototype = null;
        }
        return result || context.Object();
      };
    }());

    /**
     * The base implementation of `_.delay` and `_.defer` which accepts an index
     * of where to slice the arguments to provide to `func`.
     *
     * @private
     * @param {Function} func The function to delay.
     * @param {number} wait The number of milliseconds to delay invocation.
     * @param {Object} args The `arguments` object to slice and provide to `func`.
     * @returns {number} Returns the timer id.
     */
    function baseDelay(func, wait, args, fromIndex) {
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      return setTimeout(function() { func.apply(undefined, baseSlice(args, fromIndex)); }, wait);
    }

    /**
     * The base implementation of `_.difference` which accepts a single array
     * of values to exclude.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {Array} values The values to exclude.
     * @returns {Array} Returns the new array of filtered values.
     */
    function baseDifference(array, values) {
      var length = array ? array.length : 0,
          result = [];

      if (!length) {
        return result;
      }
      var index = -1,
          indexOf = getIndexOf(),
          isCommon = indexOf == baseIndexOf,
          cache = isCommon && values.length >= 200 && createCache(values),
          valuesLength = values.length;

      if (cache) {
        indexOf = cacheIndexOf;
        isCommon = false;
        values = cache;
      }
      outer:
      while (++index < length) {
        var value = array[index];

        if (isCommon && value === value) {
          var valuesIndex = valuesLength;
          while (valuesIndex--) {
            if (values[valuesIndex] === value) {
              continue outer;
            }
          }
          result.push(value);
        }
        else if (indexOf(values, value) < 0) {
          result.push(value);
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.forEach` without support for callback
     * shorthands and `this` binding.
     *
     * @private
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array|Object|string} Returns `collection`.
     */
    function baseEach(collection, iteratee) {
      var length = collection ? collection.length : 0;
      if (!isLength(length)) {
        return baseForOwn(collection, iteratee);
      }
      var index = -1,
          iterable = toObject(collection);

      while (++index < length) {
        if (iteratee(iterable[index], index, iterable) === false) {
          break;
        }
      }
      return collection;
    }

    /**
     * The base implementation of `_.forEachRight` without support for callback
     * shorthands and `this` binding.
     *
     * @private
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array|Object|string} Returns `collection`.
     */
    function baseEachRight(collection, iteratee) {
      var length = collection ? collection.length : 0;
      if (!isLength(length)) {
        return baseForOwnRight(collection, iteratee);
      }
      var iterable = toObject(collection);
      while (length--) {
        if (iteratee(iterable[length], length, iterable) === false) {
          break;
        }
      }
      return collection;
    }

    /**
     * The base implementation of `_.every` without support for callback
     * shorthands or `this` binding.
     *
     * @private
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function} predicate The function invoked per iteration.
     * @returns {boolean} Returns `true` if all elements pass the predicate check,
     *  else `false`
     */
    function baseEvery(collection, predicate) {
      var result = true;
      baseEach(collection, function(value, index, collection) {
        result = !!predicate(value, index, collection);
        return result;
      });
      return result;
    }

    /**
     * The base implementation of `_.fill` without an iteratee call guard.
     *
     * @private
     * @param {Array} array The array to fill.
     * @param {*} value The value to fill `array` with.
     * @param {number} [start=0] The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns `array`.
     */
    function baseFill(array, value, start, end) {
      var length = array.length;

      start = start == null ? 0 : (+start || 0);
      if (start < 0) {
        start = -start > length ? 0 : (length + start);
      }
      end = (typeof end == 'undefined' || end > length) ? length : (+end || 0);
      if (end < 0) {
        end += length;
      }
      length = start > end ? 0 : end >>> 0;
      start >>>= 0;

      while (start < length) {
        array[start++] = value;
      }
      return array;
    }

    /**
     * The base implementation of `_.filter` without support for callback
     * shorthands or `this` binding.
     *
     * @private
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function} predicate The function invoked per iteration.
     * @returns {Array} Returns the new filtered array.
     */
    function baseFilter(collection, predicate) {
      var result = [];
      baseEach(collection, function(value, index, collection) {
        if (predicate(value, index, collection)) {
          result.push(value);
        }
      });
      return result;
    }

    /**
     * The base implementation of `_.find`, `_.findLast`, `_.findKey`, and `_.findLastKey`,
     * without support for callback shorthands and `this` binding, which iterates
     * over `collection` using the provided `eachFunc`.
     *
     * @private
     * @param {Array|Object|string} collection The collection to search.
     * @param {Function} predicate The function invoked per iteration.
     * @param {Function} eachFunc The function to iterate over `collection`.
     * @param {boolean} [retKey] Specify returning the key of the found element
     *  instead of the element itself.
     * @returns {*} Returns the found element or its key, else `undefined`.
     */
    function baseFind(collection, predicate, eachFunc, retKey) {
      var result;
      eachFunc(collection, function(value, key, collection) {
        if (predicate(value, key, collection)) {
          result = retKey ? key : value;
          return false;
        }
      });
      return result;
    }

    /**
     * The base implementation of `_.flatten` with added support for restricting
     * flattening and specifying the start index.
     *
     * @private
     * @param {Array} array The array to flatten.
     * @param {boolean} [isDeep] Specify a deep flatten.
     * @param {boolean} [isStrict] Restrict flattening to arrays and `arguments` objects.
     * @param {number} [fromIndex=0] The index to start from.
     * @returns {Array} Returns the new flattened array.
     */
    function baseFlatten(array, isDeep, isStrict, fromIndex) {
      var index = (fromIndex || 0) - 1,
          length = array.length,
          resIndex = -1,
          result = [];

      while (++index < length) {
        var value = array[index];

        if (isObjectLike(value) && isLength(value.length) && (isArray(value) || isArguments(value))) {
          if (isDeep) {
            // Recursively flatten arrays (susceptible to call stack limits).
            value = baseFlatten(value, isDeep, isStrict);
          }
          var valIndex = -1,
              valLength = value.length;

          result.length += valLength;
          while (++valIndex < valLength) {
            result[++resIndex] = value[valIndex];
          }
        } else if (!isStrict) {
          result[++resIndex] = value;
        }
      }
      return result;
    }

    /**
     * The base implementation of `baseForIn` and `baseForOwn` which iterates
     * over `object` properties returned by `keysFunc` invoking `iteratee` for
     * each property. Iterator functions may exit iteration early by explicitly
     * returning `false`.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @param {Function} keysFunc The function to get the keys of `object`.
     * @returns {Object} Returns `object`.
     */
    function baseFor(object, iteratee, keysFunc) {
      var index = -1,
          iterable = toObject(object),
          props = keysFunc(object),
          length = props.length;

      while (++index < length) {
        var key = props[index];
        if (iteratee(iterable[key], key, iterable) === false) {
          break;
        }
      }
      return object;
    }

    /**
     * This function is like `baseFor` except that it iterates over properties
     * in the opposite order.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @param {Function} keysFunc The function to get the keys of `object`.
     * @returns {Object} Returns `object`.
     */
    function baseForRight(object, iteratee, keysFunc) {
      var iterable = toObject(object),
          props = keysFunc(object),
          length = props.length;

      while (length--) {
        var key = props[length];
        if (iteratee(iterable[key], key, iterable) === false) {
          break;
        }
      }
      return object;
    }

    /**
     * The base implementation of `_.forIn` without support for callback
     * shorthands and `this` binding.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Object} Returns `object`.
     */
    function baseForIn(object, iteratee) {
      return baseFor(object, iteratee, keysIn);
    }

    /**
     * The base implementation of `_.forOwn` without support for callback
     * shorthands and `this` binding.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Object} Returns `object`.
     */
    function baseForOwn(object, iteratee) {
      return baseFor(object, iteratee, keys);
    }

    /**
     * The base implementation of `_.forOwnRight` without support for callback
     * shorthands and `this` binding.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Object} Returns `object`.
     */
    function baseForOwnRight(object, iteratee) {
      return baseForRight(object, iteratee, keys);
    }

    /**
     * The base implementation of `_.functions` which creates an array of
     * `object` function property names filtered from those provided.
     *
     * @private
     * @param {Object} object The object to inspect.
     * @param {Array} props The property names to filter.
     * @returns {Array} Returns the new array of filtered property names.
     */
    function baseFunctions(object, props) {
      var index = -1,
          length = props.length,
          resIndex = -1,
          result = [];

      while (++index < length) {
        var key = props[index];
        if (isFunction(object[key])) {
          result[++resIndex] = key;
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.invoke` which requires additional arguments
     * to be provided as an array of arguments rather than individually.
     *
     * @private
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|string} methodName The name of the method to invoke or
     *  the function invoked per iteration.
     * @param {Array} [args] The arguments to invoke the method with.
     * @returns {Array} Returns the array of results.
     */
    function baseInvoke(collection, methodName, args) {
      var index = -1,
          isFunc = typeof methodName == 'function',
          length = collection ? collection.length : 0,
          result = isLength(length) ? Array(length) : [];

      baseEach(collection, function(value) {
        var func = isFunc ? methodName : (value != null && value[methodName]);
        result[++index] = func ? func.apply(value, args) : undefined;
      });
      return result;
    }

    /**
     * The base implementation of `_.isEqual` without support for `this` binding
     * `customizer` functions.
     *
     * @private
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @param {Function} [customizer] The function to customize comparing values.
     * @param {boolean} [isWhere] Specify performing partial comparisons.
     * @param {Array} [stackA] Tracks traversed `value` objects.
     * @param {Array} [stackB] Tracks traversed `other` objects.
     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
     */
    function baseIsEqual(value, other, customizer, isWhere, stackA, stackB) {
      // Exit early for identical values.
      if (value === other) {
        // Treat `+0` vs. `-0` as not equal.
        return value !== 0 || (1 / value == 1 / other);
      }
      var valType = typeof value,
          othType = typeof other;

      // Exit early for unlike primitive values.
      if ((valType != 'function' && valType != 'object' && othType != 'function' && othType != 'object') ||
          value == null || other == null) {
        // Return `false` unless both values are `NaN`.
        return value !== value && other !== other;
      }
      return baseIsEqualDeep(value, other, baseIsEqual, customizer, isWhere, stackA, stackB);
    }

    /**
     * A specialized version of `baseIsEqual` for arrays and objects which performs
     * deep comparisons and tracks traversed objects enabling objects with circular
     * references to be compared.
     *
     * @private
     * @param {Object} object The object to compare.
     * @param {Object} other The other object to compare.
     * @param {Function} equalFunc The function to determine equivalents of values.
     * @param {Function} [customizer] The function to customize comparing objects.
     * @param {boolean} [isWhere] Specify performing partial comparisons.
     * @param {Array} [stackA=[]] Tracks traversed `value` objects.
     * @param {Array} [stackB=[]] Tracks traversed `other` objects.
     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
     */
    function baseIsEqualDeep(object, other, equalFunc, customizer, isWhere, stackA, stackB) {
      var objIsArr = isArray(object),
          othIsArr = isArray(other),
          objTag = arrayTag,
          othTag = arrayTag;

      if (!objIsArr) {
        objTag = objToString.call(object);
        if (objTag == argsTag) {
          objTag = objectTag;
        } else if (objTag != objectTag) {
          objIsArr = isTypedArray(object);
        }
      }
      if (!othIsArr) {
        othTag = objToString.call(other);
        if (othTag == argsTag) {
          othTag = objectTag;
        } else if (othTag != objectTag) {
          othIsArr = isTypedArray(other);
        }
      }
      var objIsObj = objTag == objectTag,
          othIsObj = othTag == objectTag,
          isSameTag = objTag == othTag;

      if (isSameTag && !(objIsArr || objIsObj)) {
        return equalByTag(object, other, objTag);
      }
      var valWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),
          othWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');

      if (valWrapped || othWrapped) {
        return equalFunc(valWrapped ? object.value() : object, othWrapped ? other.value() : other, customizer, isWhere, stackA, stackB);
      }
      if (!isSameTag) {
        return false;
      }
      // Assume cyclic values are equal.
      // For more information on detecting circular references see https://es5.github.io/#JO.
      stackA || (stackA = []);
      stackB || (stackB = []);

      var length = stackA.length;
      while (length--) {
        if (stackA[length] == object) {
          return stackB[length] == other;
        }
      }
      // Add `object` and `other` to the stack of traversed objects.
      stackA.push(object);
      stackB.push(other);

      var result = (objIsArr ? equalArrays : equalObjects)(object, other, equalFunc, customizer, isWhere, stackA, stackB);

      stackA.pop();
      stackB.pop();

      return result;
    }

    /**
     * The base implementation of `_.isMatch` without support for callback
     * shorthands or `this` binding.
     *
     * @private
     * @param {Object} object The object to inspect.
     * @param {Array} props The source property names to match.
     * @param {Array} values The source values to match.
     * @param {Array} strictCompareFlags Strict comparison flags for source values.
     * @param {Function} [customizer] The function to customize comparing objects.
     * @returns {boolean} Returns `true` if `object` is a match, else `false`.
     */
    function baseIsMatch(object, props, values, strictCompareFlags, customizer) {
      var length = props.length;
      if (object == null) {
        return !length;
      }
      var index = -1,
          noCustomizer = !customizer;

      while (++index < length) {
        if ((noCustomizer && strictCompareFlags[index])
              ? values[index] !== object[props[index]]
              : !hasOwnProperty.call(object, props[index])
            ) {
          return false;
        }
      }
      index = -1;
      while (++index < length) {
        var key = props[index];
        if (noCustomizer && strictCompareFlags[index]) {
          var result = hasOwnProperty.call(object, key);
        } else {
          var objValue = object[key],
              srcValue = values[index];

          result = customizer ? customizer(objValue, srcValue, key) : undefined;
          if (typeof result == 'undefined') {
            result = baseIsEqual(srcValue, objValue, customizer, true);
          }
        }
        if (!result) {
          return false;
        }
      }
      return true;
    }

    /**
     * The base implementation of `_.map` without support for callback shorthands
     * or `this` binding.
     *
     * @private
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array} Returns the new mapped array.
     */
    function baseMap(collection, iteratee) {
      var result = [];
      baseEach(collection, function(value, key, collection) {
        result.push(iteratee(value, key, collection));
      });
      return result;
    }

    /**
     * The base implementation of `_.matches` which does not clone `source`.
     *
     * @private
     * @param {Object} source The object of property values to match.
     * @returns {Function} Returns the new function.
     */
    function baseMatches(source) {
      var props = keys(source),
          length = props.length;

      if (length == 1) {
        var key = props[0],
            value = source[key];

        if (isStrictComparable(value)) {
          return function(object) {
            return object != null && value === object[key] && hasOwnProperty.call(object, key);
          };
        }
      }
      var values = Array(length),
          strictCompareFlags = Array(length);

      while (length--) {
        value = source[props[length]];
        values[length] = value;
        strictCompareFlags[length] = isStrictComparable(value);
      }
      return function(object) {
        return baseIsMatch(object, props, values, strictCompareFlags);
      };
    }

    /**
     * The base implementation of `_.matchesProperty` which does not coerce `key`
     * to a string.
     *
     * @private
     * @param {string} key The key of the property to get.
     * @param {*} value The value to compare.
     * @returns {Function} Returns the new function.
     */
    function baseMatchesProperty(key, value) {
      if (isStrictComparable(value)) {
        return function(object) {
          return object != null && object[key] === value;
        };
      }
      return function(object) {
        return object != null && baseIsEqual(value, object[key], null, true);
      };
    }

    /**
     * The base implementation of `_.merge` without support for argument juggling,
     * multiple sources, and `this` binding `customizer` functions.
     *
     * @private
     * @param {Object} object The destination object.
     * @param {Object} source The source object.
     * @param {Function} [customizer] The function to customize merging properties.
     * @param {Array} [stackA=[]] Tracks traversed source objects.
     * @param {Array} [stackB=[]] Associates values with source counterparts.
     * @returns {Object} Returns the destination object.
     */
    function baseMerge(object, source, customizer, stackA, stackB) {
      var isSrcArr = isLength(source.length) && (isArray(source) || isTypedArray(source));

      (isSrcArr ? arrayEach : baseForOwn)(source, function(srcValue, key, source) {
        if (isObjectLike(srcValue)) {
          stackA || (stackA = []);
          stackB || (stackB = []);
          return baseMergeDeep(object, source, key, baseMerge, customizer, stackA, stackB);
        }
        var value = object[key],
            result = customizer ? customizer(value, srcValue, key, object, source) : undefined,
            isCommon = typeof result == 'undefined';

        if (isCommon) {
          result = srcValue;
        }
        if ((isSrcArr || typeof result != 'undefined') &&
            (isCommon || (result === result ? result !== value : value === value))) {
          object[key] = result;
        }
      });
      return object;
    }

    /**
     * A specialized version of `baseMerge` for arrays and objects which performs
     * deep merges and tracks traversed objects enabling objects with circular
     * references to be merged.
     *
     * @private
     * @param {Object} object The destination object.
     * @param {Object} source The source object.
     * @param {string} key The key of the value to merge.
     * @param {Function} mergeFunc The function to merge values.
     * @param {Function} [customizer] The function to customize merging properties.
     * @param {Array} [stackA=[]] Tracks traversed source objects.
     * @param {Array} [stackB=[]] Associates values with source counterparts.
     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
     */
    function baseMergeDeep(object, source, key, mergeFunc, customizer, stackA, stackB) {
      var length = stackA.length,
          srcValue = source[key];

      while (length--) {
        if (stackA[length] == srcValue) {
          object[key] = stackB[length];
          return;
        }
      }
      var value = object[key],
          result = customizer ? customizer(value, srcValue, key, object, source) : undefined,
          isCommon = typeof result == 'undefined';

      if (isCommon) {
        result = srcValue;
        if (isLength(srcValue.length) && (isArray(srcValue) || isTypedArray(srcValue))) {
          result = isArray(value)
            ? value
            : (value ? arrayCopy(value) : []);
        }
        else if (isPlainObject(srcValue) || isArguments(srcValue)) {
          result = isArguments(value)
            ? toPlainObject(value)
            : (isPlainObject(value) ? value : {});
        }
        else {
          isCommon = false;
        }
      }
      // Add the source value to the stack of traversed objects and associate
      // it with its merged value.
      stackA.push(srcValue);
      stackB.push(result);

      if (isCommon) {
        // Recursively merge objects and arrays (susceptible to call stack limits).
        object[key] = mergeFunc(result, srcValue, customizer, stackA, stackB);
      } else if (result === result ? result !== value : value === value) {
        object[key] = result;
      }
    }

    /**
     * The base implementation of `_.property` which does not coerce `key` to a string.
     *
     * @private
     * @param {string} key The key of the property to get.
     * @returns {Function} Returns the new function.
     */
    function baseProperty(key) {
      return function(object) {
        return object == null ? undefined : object[key];
      };
    }

    /**
     * The base implementation of `_.pullAt` without support for individual
     * index arguments.
     *
     * @private
     * @param {Array} array The array to modify.
     * @param {number[]} indexes The indexes of elements to remove.
     * @returns {Array} Returns the new array of removed elements.
     */
    function basePullAt(array, indexes) {
      var length = indexes.length,
          result = baseAt(array, indexes);

      indexes.sort(baseCompareAscending);
      while (length--) {
        var index = parseFloat(indexes[length]);
        if (index != previous && isIndex(index)) {
          var previous = index;
          splice.call(array, index, 1);
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.random` without support for argument juggling
     * and returning floating-point numbers.
     *
     * @private
     * @param {number} min The minimum possible value.
     * @param {number} max The maximum possible value.
     * @returns {number} Returns the random number.
     */
    function baseRandom(min, max) {
      return min + floor(nativeRandom() * (max - min + 1));
    }

    /**
     * The base implementation of `_.reduce` and `_.reduceRight` without support
     * for callback shorthands or `this` binding, which iterates over `collection`
     * using the provided `eachFunc`.
     *
     * @private
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @param {*} accumulator The initial value.
     * @param {boolean} initFromCollection Specify using the first or last element
     *  of `collection` as the initial value.
     * @param {Function} eachFunc The function to iterate over `collection`.
     * @returns {*} Returns the accumulated value.
     */
    function baseReduce(collection, iteratee, accumulator, initFromCollection, eachFunc) {
      eachFunc(collection, function(value, index, collection) {
        accumulator = initFromCollection
          ? (initFromCollection = false, value)
          : iteratee(accumulator, value, index, collection);
      });
      return accumulator;
    }

    /**
     * The base implementation of `setData` without support for hot loop detection.
     *
     * @private
     * @param {Function} func The function to associate metadata with.
     * @param {*} data The metadata.
     * @returns {Function} Returns `func`.
     */
    var baseSetData = !metaMap ? identity : function(func, data) {
      metaMap.set(func, data);
      return func;
    };

    /**
     * The base implementation of `_.slice` without an iteratee call guard.
     *
     * @private
     * @param {Array} array The array to slice.
     * @param {number} [start=0] The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns the slice of `array`.
     */
    function baseSlice(array, start, end) {
      var index = -1,
          length = array.length;

      start = start == null ? 0 : (+start || 0);
      if (start < 0) {
        start = -start > length ? 0 : (length + start);
      }
      end = (typeof end == 'undefined' || end > length) ? length : (+end || 0);
      if (end < 0) {
        end += length;
      }
      length = start > end ? 0 : (end - start) >>> 0;
      start >>>= 0;

      var result = Array(length);
      while (++index < length) {
        result[index] = array[index + start];
      }
      return result;
    }

    /**
     * The base implementation of `_.some` without support for callback shorthands
     * or `this` binding.
     *
     * @private
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function} predicate The function invoked per iteration.
     * @returns {boolean} Returns `true` if any element passes the predicate check,
     *  else `false`.
     */
    function baseSome(collection, predicate) {
      var result;

      baseEach(collection, function(value, index, collection) {
        result = predicate(value, index, collection);
        return !result;
      });
      return !!result;
    }

    /**
     * The base implementation of `_.uniq` without support for callback shorthands
     * and `this` binding.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {Function} [iteratee] The function invoked per iteration.
     * @returns {Array} Returns the new duplicate-value-free array.
     */
    function baseUniq(array, iteratee) {
      var index = -1,
          indexOf = getIndexOf(),
          length = array.length,
          isCommon = indexOf == baseIndexOf,
          isLarge = isCommon && length >= 200,
          seen = isLarge && createCache(),
          result = [];

      if (seen) {
        indexOf = cacheIndexOf;
        isCommon = false;
      } else {
        isLarge = false;
        seen = iteratee ? [] : result;
      }
      outer:
      while (++index < length) {
        var value = array[index],
            computed = iteratee ? iteratee(value, index, array) : value;

        if (isCommon && value === value) {
          var seenIndex = seen.length;
          while (seenIndex--) {
            if (seen[seenIndex] === computed) {
              continue outer;
            }
          }
          if (iteratee) {
            seen.push(computed);
          }
          result.push(value);
        }
        else if (indexOf(seen, computed) < 0) {
          if (iteratee || isLarge) {
            seen.push(computed);
          }
          result.push(value);
        }
      }
      return result;
    }

    /**
     * The base implementation of `_.values` and `_.valuesIn` which creates an
     * array of `object` property values corresponding to the property names
     * returned by `keysFunc`.
     *
     * @private
     * @param {Object} object The object to query.
     * @param {Array} props The property names to get values for.
     * @returns {Object} Returns the array of property values.
     */
    function baseValues(object, props) {
      var index = -1,
          length = props.length,
          result = Array(length);

      while (++index < length) {
        result[index] = object[props[index]];
      }
      return result;
    }

    /**
     * The base implementation of `wrapperValue` which returns the result of
     * performing a sequence of actions on the unwrapped `value`, where each
     * successive action is supplied the return value of the previous.
     *
     * @private
     * @param {*} value The unwrapped value.
     * @param {Array} actions Actions to peform to resolve the unwrapped value.
     * @returns {*} Returns the resolved unwrapped value.
     */
    function baseWrapperValue(value, actions) {
      var result = value;
      if (result instanceof LazyWrapper) {
        result = result.value();
      }
      var index = -1,
          length = actions.length;

      while (++index < length) {
        var args = [result],
            action = actions[index];

        push.apply(args, action.args);
        result = action.func.apply(action.thisArg, args);
      }
      return result;
    }

    /**
     * Performs a binary search of `array` to determine the index at which `value`
     * should be inserted into `array` in order to maintain its sort order.
     *
     * @private
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @param {boolean} [retHighest] Specify returning the highest, instead
     *  of the lowest, index at which a value should be inserted into `array`.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     */
    function binaryIndex(array, value, retHighest) {
      var low = 0,
          high = array ? array.length : low;

      if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {
        while (low < high) {
          var mid = (low + high) >>> 1,
              computed = array[mid];

          if (retHighest ? (computed <= value) : (computed < value)) {
            low = mid + 1;
          } else {
            high = mid;
          }
        }
        return high;
      }
      return binaryIndexBy(array, value, identity, retHighest);
    }

    /**
     * This function is like `binaryIndex` except that it invokes `iteratee` for
     * `value` and each element of `array` to compute their sort ranking. The
     * iteratee is invoked with one argument; (value).
     *
     * @private
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @param {Function} iteratee The function invoked per iteration.
     * @param {boolean} [retHighest] Specify returning the highest, instead
     *  of the lowest, index at which a value should be inserted into `array`.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     */
    function binaryIndexBy(array, value, iteratee, retHighest) {
      value = iteratee(value);

      var low = 0,
          high = array ? array.length : 0,
          valIsNaN = value !== value,
          valIsUndef = typeof value == 'undefined';

      while (low < high) {
        var mid = floor((low + high) / 2),
            computed = iteratee(array[mid]),
            isReflexive = computed === computed;

        if (valIsNaN) {
          var setLow = isReflexive || retHighest;
        } else if (valIsUndef) {
          setLow = isReflexive && (retHighest || typeof computed != 'undefined');
        } else {
          setLow = retHighest ? (computed <= value) : (computed < value);
        }
        if (setLow) {
          low = mid + 1;
        } else {
          high = mid;
        }
      }
      return nativeMin(high, MAX_ARRAY_INDEX);
    }

    /**
     * A specialized version of `baseCallback` which only supports `this` binding
     * and specifying the number of arguments to provide to `func`.
     *
     * @private
     * @param {Function} func The function to bind.
     * @param {*} thisArg The `this` binding of `func`.
     * @param {number} [argCount] The number of arguments to provide to `func`.
     * @returns {Function} Returns the callback.
     */
    function bindCallback(func, thisArg, argCount) {
      if (typeof func != 'function') {
        return identity;
      }
      if (typeof thisArg == 'undefined') {
        return func;
      }
      switch (argCount) {
        case 1: return function(value) {
          return func.call(thisArg, value);
        };
        case 3: return function(value, index, collection) {
          return func.call(thisArg, value, index, collection);
        };
        case 4: return function(accumulator, value, index, collection) {
          return func.call(thisArg, accumulator, value, index, collection);
        };
        case 5: return function(value, other, key, object, source) {
          return func.call(thisArg, value, other, key, object, source);
        };
      }
      return function() {
        return func.apply(thisArg, arguments);
      };
    }

    /**
     * Creates a clone of the given array buffer.
     *
     * @private
     * @param {ArrayBuffer} buffer The array buffer to clone.
     * @returns {ArrayBuffer} Returns the cloned array buffer.
     */
    function bufferClone(buffer) {
      return bufferSlice.call(buffer, 0);
    }
    if (!bufferSlice) {
      // PhantomJS has `ArrayBuffer` and `Uint8Array` but not `Float64Array`.
      bufferClone = !(ArrayBuffer && Uint8Array) ? constant(null) : function(buffer) {
        var byteLength = buffer.byteLength,
            floatLength = Float64Array ? floor(byteLength / FLOAT64_BYTES_PER_ELEMENT) : 0,
            offset = floatLength * FLOAT64_BYTES_PER_ELEMENT,
            result = new ArrayBuffer(byteLength);

        if (floatLength) {
          var view = new Float64Array(result, 0, floatLength);
          view.set(new Float64Array(buffer, 0, floatLength));
        }
        if (byteLength != offset) {
          view = new Uint8Array(result, offset);
          view.set(new Uint8Array(buffer, offset));
        }
        return result;
      };
    }

    /**
     * Creates an array that is the composition of partially applied arguments,
     * placeholders, and provided arguments into a single array of arguments.
     *
     * @private
     * @param {Array|Object} args The provided arguments.
     * @param {Array} partials The arguments to prepend to those provided.
     * @param {Array} holders The `partials` placeholder indexes.
     * @returns {Array} Returns the new array of composed arguments.
     */
    function composeArgs(args, partials, holders) {
      var holdersLength = holders.length,
          argsIndex = -1,
          argsLength = nativeMax(args.length - holdersLength, 0),
          leftIndex = -1,
          leftLength = partials.length,
          result = Array(argsLength + leftLength);

      while (++leftIndex < leftLength) {
        result[leftIndex] = partials[leftIndex];
      }
      while (++argsIndex < holdersLength) {
        result[holders[argsIndex]] = args[argsIndex];
      }
      while (argsLength--) {
        result[leftIndex++] = args[argsIndex++];
      }
      return result;
    }

    /**
     * This function is like `composeArgs` except that the arguments composition
     * is tailored for `_.partialRight`.
     *
     * @private
     * @param {Array|Object} args The provided arguments.
     * @param {Array} partials The arguments to append to those provided.
     * @param {Array} holders The `partials` placeholder indexes.
     * @returns {Array} Returns the new array of composed arguments.
     */
    function composeArgsRight(args, partials, holders) {
      var holdersIndex = -1,
          holdersLength = holders.length,
          argsIndex = -1,
          argsLength = nativeMax(args.length - holdersLength, 0),
          rightIndex = -1,
          rightLength = partials.length,
          result = Array(argsLength + rightLength);

      while (++argsIndex < argsLength) {
        result[argsIndex] = args[argsIndex];
      }
      var pad = argsIndex;
      while (++rightIndex < rightLength) {
        result[pad + rightIndex] = partials[rightIndex];
      }
      while (++holdersIndex < holdersLength) {
        result[pad + holders[holdersIndex]] = args[argsIndex++];
      }
      return result;
    }

    /**
     * Creates a function that aggregates a collection, creating an accumulator
     * object composed from the results of running each element in the collection
     * through an iteratee.
     *
     * @private
     * @param {Function} setter The function to set keys and values of the accumulator object.
     * @param {Function} [initializer] The function to initialize the accumulator object.
     * @returns {Function} Returns the new aggregator function.
     */
    function createAggregator(setter, initializer) {
      return function(collection, iteratee, thisArg) {
        var result = initializer ? initializer() : {};
        iteratee = getCallback(iteratee, thisArg, 3);

        if (isArray(collection)) {
          var index = -1,
              length = collection.length;

          while (++index < length) {
            var value = collection[index];
            setter(result, value, iteratee(value, index, collection), collection);
          }
        } else {
          baseEach(collection, function(value, key, collection) {
            setter(result, value, iteratee(value, key, collection), collection);
          });
        }
        return result;
      };
    }

    /**
     * Creates a function that assigns properties of source object(s) to a given
     * destination object.
     *
     * @private
     * @param {Function} assigner The function to assign values.
     * @returns {Function} Returns the new assigner function.
     */
    function createAssigner(assigner) {
      return function() {
        var length = arguments.length,
            object = arguments[0];

        if (length < 2 || object == null) {
          return object;
        }
        if (length > 3 && isIterateeCall(arguments[1], arguments[2], arguments[3])) {
          length = 2;
        }
        // Juggle arguments.
        if (length > 3 && typeof arguments[length - 2] == 'function') {
          var customizer = bindCallback(arguments[--length - 1], arguments[length--], 5);
        } else if (length > 2 && typeof arguments[length - 1] == 'function') {
          customizer = arguments[--length];
        }
        var index = 0;
        while (++index < length) {
          var source = arguments[index];
          if (source) {
            assigner(object, source, customizer);
          }
        }
        return object;
      };
    }

    /**
     * Creates a function that wraps `func` and invokes it with the `this`
     * binding of `thisArg`.
     *
     * @private
     * @param {Function} func The function to bind.
     * @param {*} [thisArg] The `this` binding of `func`.
     * @returns {Function} Returns the new bound function.
     */
    function createBindWrapper(func, thisArg) {
      var Ctor = createCtorWrapper(func);

      function wrapper() {
        return (this instanceof wrapper ? Ctor : func).apply(thisArg, arguments);
      }
      return wrapper;
    }

    /**
     * Creates a `Set` cache object to optimize linear searches of large arrays.
     *
     * @private
     * @param {Array} [values] The values to cache.
     * @returns {null|Object} Returns the new cache object if `Set` is supported, else `null`.
     */
    var createCache = !(nativeCreate && Set) ? constant(null) : function(values) {
      return new SetCache(values);
    };

    /**
     * Creates a function that produces compound words out of the words in a
     * given string.
     *
     * @private
     * @param {Function} callback The function to combine each word.
     * @returns {Function} Returns the new compounder function.
     */
    function createCompounder(callback) {
      return function(string) {
        var index = -1,
            array = words(deburr(string)),
            length = array.length,
            result = '';

        while (++index < length) {
          result = callback(result, array[index], index);
        }
        return result;
      };
    }

    /**
     * Creates a function that produces an instance of `Ctor` regardless of
     * whether it was invoked as part of a `new` expression or by `call` or `apply`.
     *
     * @private
     * @param {Function} Ctor The constructor to wrap.
     * @returns {Function} Returns the new wrapped function.
     */
    function createCtorWrapper(Ctor) {
      return function() {
        var thisBinding = baseCreate(Ctor.prototype),
            result = Ctor.apply(thisBinding, arguments);

        // Mimic the constructor's `return` behavior.
        // See https://es5.github.io/#x13.2.2 for more details.
        return isObject(result) ? result : thisBinding;
      };
    }

    /**
     * Creates a function that gets the extremum value of a collection.
     *
     * @private
     * @param {Function} arrayFunc The function to get the extremum value from an array.
     * @param {boolean} [isMin] Specify returning the minimum, instead of the maximum,
     *  extremum value.
     * @returns {Function} Returns the new extremum function.
     */
    function createExtremum(arrayFunc, isMin) {
      return function(collection, iteratee, thisArg) {
        if (thisArg && isIterateeCall(collection, iteratee, thisArg)) {
          iteratee = null;
        }
        var func = getCallback(),
            noIteratee = iteratee == null;

        if (!(func === baseCallback && noIteratee)) {
          noIteratee = false;
          iteratee = func(iteratee, thisArg, 3);
        }
        if (noIteratee) {
          var isArr = isArray(collection);
          if (!isArr && isString(collection)) {
            iteratee = charAtCallback;
          } else {
            return arrayFunc(isArr ? collection : toIterable(collection));
          }
        }
        return extremumBy(collection, iteratee, isMin);
      };
    }

    /**
     * Creates a function that wraps `func` and invokes it with optional `this`
     * binding of, partial application, and currying.
     *
     * @private
     * @param {Function|string} func The function or method name to reference.
     * @param {number} bitmask The bitmask of flags. See `createWrapper` for more details.
     * @param {*} [thisArg] The `this` binding of `func`.
     * @param {Array} [partials] The arguments to prepend to those provided to the new function.
     * @param {Array} [holders] The `partials` placeholder indexes.
     * @param {Array} [partialsRight] The arguments to append to those provided to the new function.
     * @param {Array} [holdersRight] The `partialsRight` placeholder indexes.
     * @param {Array} [argPos] The argument positions of the new function.
     * @param {number} [ary] The arity cap of `func`.
     * @param {number} [arity] The arity of `func`.
     * @returns {Function} Returns the new wrapped function.
     */
    function createHybridWrapper(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {
      var isAry = bitmask & ARY_FLAG,
          isBind = bitmask & BIND_FLAG,
          isBindKey = bitmask & BIND_KEY_FLAG,
          isCurry = bitmask & CURRY_FLAG,
          isCurryBound = bitmask & CURRY_BOUND_FLAG,
          isCurryRight = bitmask & CURRY_RIGHT_FLAG;

      var Ctor = !isBindKey && createCtorWrapper(func),
          key = func;

      function wrapper() {
        // Avoid `arguments` object use disqualifying optimizations by
        // converting it to an array before providing it to other functions.
        var length = arguments.length,
            index = length,
            args = Array(length);

        while (index--) {
          args[index] = arguments[index];
        }
        if (partials) {
          args = composeArgs(args, partials, holders);
        }
        if (partialsRight) {
          args = composeArgsRight(args, partialsRight, holdersRight);
        }
        if (isCurry || isCurryRight) {
          var placeholder = wrapper.placeholder,
              argsHolders = replaceHolders(args, placeholder);

          length -= argsHolders.length;
          if (length < arity) {
            var newArgPos = argPos ? arrayCopy(argPos) : null,
                newArity = nativeMax(arity - length, 0),
                newsHolders = isCurry ? argsHolders : null,
                newHoldersRight = isCurry ? null : argsHolders,
                newPartials = isCurry ? args : null,
                newPartialsRight = isCurry ? null : args;

            bitmask |= (isCurry ? PARTIAL_FLAG : PARTIAL_RIGHT_FLAG);
            bitmask &= ~(isCurry ? PARTIAL_RIGHT_FLAG : PARTIAL_FLAG);

            if (!isCurryBound) {
              bitmask &= ~(BIND_FLAG | BIND_KEY_FLAG);
            }
            var result = createHybridWrapper(func, bitmask, thisArg, newPartials, newsHolders, newPartialsRight, newHoldersRight, newArgPos, ary, newArity);
            result.placeholder = placeholder;
            return result;
          }
        }
        var thisBinding = isBind ? thisArg : this;
        if (isBindKey) {
          func = thisBinding[key];
        }
        if (argPos) {
          args = reorder(args, argPos);
        }
        if (isAry && ary < args.length) {
          args.length = ary;
        }
        return (this instanceof wrapper ? (Ctor || createCtorWrapper(func)) : func).apply(thisBinding, args);
      }
      return wrapper;
    }

    /**
     * Creates the pad required for `string` based on the given padding length.
     * The `chars` string may be truncated if the number of padding characters
     * exceeds the padding length.
     *
     * @private
     * @param {string} string The string to create padding for.
     * @param {number} [length=0] The padding length.
     * @param {string} [chars=' '] The string used as padding.
     * @returns {string} Returns the pad for `string`.
     */
    function createPad(string, length, chars) {
      var strLength = string.length;
      length = +length;

      if (strLength >= length || !nativeIsFinite(length)) {
        return '';
      }
      var padLength = length - strLength;
      chars = chars == null ? ' ' : (chars + '');
      return repeat(chars, ceil(padLength / chars.length)).slice(0, padLength);
    }

    /**
     * Creates a function that wraps `func` and invokes it with the optional `this`
     * binding of `thisArg` and the `partials` prepended to those provided to
     * the wrapper.
     *
     * @private
     * @param {Function} func The function to partially apply arguments to.
     * @param {number} bitmask The bitmask of flags. See `createWrapper` for more details.
     * @param {*} thisArg The `this` binding of `func`.
     * @param {Array} partials The arguments to prepend to those provided to the new function.
     * @returns {Function} Returns the new bound function.
     */
    function createPartialWrapper(func, bitmask, thisArg, partials) {
      var isBind = bitmask & BIND_FLAG,
          Ctor = createCtorWrapper(func);

      function wrapper() {
        // Avoid `arguments` object use disqualifying optimizations by
        // converting it to an array before providing it `func`.
        var argsIndex = -1,
            argsLength = arguments.length,
            leftIndex = -1,
            leftLength = partials.length,
            args = Array(argsLength + leftLength);

        while (++leftIndex < leftLength) {
          args[leftIndex] = partials[leftIndex];
        }
        while (argsLength--) {
          args[leftIndex++] = arguments[++argsIndex];
        }
        return (this instanceof wrapper ? Ctor : func).apply(isBind ? thisArg : this, args);
      }
      return wrapper;
    }

    /**
     * Creates a function that either curries or invokes `func` with optional
     * `this` binding and partially applied arguments.
     *
     * @private
     * @param {Function|string} func The function or method name to reference.
     * @param {number} bitmask The bitmask of flags.
     *  The bitmask may be composed of the following flags:
     *     1 - `_.bind`
     *     2 - `_.bindKey`
     *     4 - `_.curry` or `_.curryRight` of a bound function
     *     8 - `_.curry`
     *    16 - `_.curryRight`
     *    32 - `_.partial`
     *    64 - `_.partialRight`
     *   128 - `_.rearg`
     *   256 - `_.ary`
     * @param {*} [thisArg] The `this` binding of `func`.
     * @param {Array} [partials] The arguments to be partially applied.
     * @param {Array} [holders] The `partials` placeholder indexes.
     * @param {Array} [argPos] The argument positions of the new function.
     * @param {number} [ary] The arity cap of `func`.
     * @param {number} [arity] The arity of `func`.
     * @returns {Function} Returns the new wrapped function.
     */
    function createWrapper(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {
      var isBindKey = bitmask & BIND_KEY_FLAG;
      if (!isBindKey && typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      var length = partials ? partials.length : 0;
      if (!length) {
        bitmask &= ~(PARTIAL_FLAG | PARTIAL_RIGHT_FLAG);
        partials = holders = null;
      }
      length -= (holders ? holders.length : 0);
      if (bitmask & PARTIAL_RIGHT_FLAG) {
        var partialsRight = partials,
            holdersRight = holders;

        partials = holders = null;
      }
      var data = !isBindKey && getData(func),
          newData = [func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity];

      if (data && data !== true) {
        mergeData(newData, data);
        bitmask = newData[1];
        arity = newData[9];
      }
      newData[9] = arity == null
        ? (isBindKey ? 0 : func.length)
        : (nativeMax(arity - length, 0) || 0);

      if (bitmask == BIND_FLAG) {
        var result = createBindWrapper(newData[0], newData[2]);
      } else if ((bitmask == PARTIAL_FLAG || bitmask == (BIND_FLAG | PARTIAL_FLAG)) && !newData[4].length) {
        result = createPartialWrapper.apply(undefined, newData);
      } else {
        result = createHybridWrapper.apply(undefined, newData);
      }
      var setter = data ? baseSetData : setData;
      return setter(result, newData);
    }

    /**
     * A specialized version of `baseIsEqualDeep` for arrays with support for
     * partial deep comparisons.
     *
     * @private
     * @param {Array} array The array to compare.
     * @param {Array} other The other array to compare.
     * @param {Function} equalFunc The function to determine equivalents of values.
     * @param {Function} [customizer] The function to customize comparing arrays.
     * @param {boolean} [isWhere] Specify performing partial comparisons.
     * @param {Array} [stackA] Tracks traversed `value` objects.
     * @param {Array} [stackB] Tracks traversed `other` objects.
     * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.
     */
    function equalArrays(array, other, equalFunc, customizer, isWhere, stackA, stackB) {
      var index = -1,
          arrLength = array.length,
          othLength = other.length,
          result = true;

      if (arrLength != othLength && !(isWhere && othLength > arrLength)) {
        return false;
      }
      // Deep compare the contents, ignoring non-numeric properties.
      while (result && ++index < arrLength) {
        var arrValue = array[index],
            othValue = other[index];

        result = undefined;
        if (customizer) {
          result = isWhere
            ? customizer(othValue, arrValue, index)
            : customizer(arrValue, othValue, index);
        }
        if (typeof result == 'undefined') {
          // Recursively compare arrays (susceptible to call stack limits).
          if (isWhere) {
            var othIndex = othLength;
            while (othIndex--) {
              othValue = other[othIndex];
              result = (arrValue && arrValue === othValue) || equalFunc(arrValue, othValue, customizer, isWhere, stackA, stackB);
              if (result) {
                break;
              }
            }
          } else {
            result = (arrValue && arrValue === othValue) || equalFunc(arrValue, othValue, customizer, isWhere, stackA, stackB);
          }
        }
      }
      return !!result;
    }

    /**
     * A specialized version of `baseIsEqualDeep` for comparing objects of
     * the same `toStringTag`.
     *
     * **Note:** This function only supports comparing values with tags of
     * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
     *
     * @private
     * @param {Object} value The object to compare.
     * @param {Object} other The other object to compare.
     * @param {string} tag The `toStringTag` of the objects to compare.
     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
     */
    function equalByTag(object, other, tag) {
      switch (tag) {
        case boolTag:
        case dateTag:
          // Coerce dates and booleans to numbers, dates to milliseconds and booleans
          // to `1` or `0` treating invalid dates coerced to `NaN` as not equal.
          return +object == +other;

        case errorTag:
          return object.name == other.name && object.message == other.message;

        case numberTag:
          // Treat `NaN` vs. `NaN` as equal.
          return (object != +object)
            ? other != +other
            // But, treat `-0` vs. `+0` as not equal.
            : (object == 0 ? ((1 / object) == (1 / other)) : object == +other);

        case regexpTag:
        case stringTag:
          // Coerce regexes to strings and treat strings primitives and string
          // objects as equal. See https://es5.github.io/#x15.10.6.4 for more details.
          return object == (other + '');
      }
      return false;
    }

    /**
     * A specialized version of `baseIsEqualDeep` for objects with support for
     * partial deep comparisons.
     *
     * @private
     * @param {Object} object The object to compare.
     * @param {Object} other The other object to compare.
     * @param {Function} equalFunc The function to determine equivalents of values.
     * @param {Function} [customizer] The function to customize comparing values.
     * @param {boolean} [isWhere] Specify performing partial comparisons.
     * @param {Array} [stackA] Tracks traversed `value` objects.
     * @param {Array} [stackB] Tracks traversed `other` objects.
     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
     */
    function equalObjects(object, other, equalFunc, customizer, isWhere, stackA, stackB) {
      var objProps = keys(object),
          objLength = objProps.length,
          othProps = keys(other),
          othLength = othProps.length;

      if (objLength != othLength && !isWhere) {
        return false;
      }
      var hasCtor,
          index = -1;

      while (++index < objLength) {
        var key = objProps[index],
            result = hasOwnProperty.call(other, key);

        if (result) {
          var objValue = object[key],
              othValue = other[key];

          result = undefined;
          if (customizer) {
            result = isWhere
              ? customizer(othValue, objValue, key)
              : customizer(objValue, othValue, key);
          }
          if (typeof result == 'undefined') {
            // Recursively compare objects (susceptible to call stack limits).
            result = (objValue && objValue === othValue) || equalFunc(objValue, othValue, customizer, isWhere, stackA, stackB);
          }
        }
        if (!result) {
          return false;
        }
        hasCtor || (hasCtor = key == 'constructor');
      }
      if (!hasCtor) {
        var objCtor = object.constructor,
            othCtor = other.constructor;

        // Non `Object` object instances with different constructors are not equal.
        if (objCtor != othCtor && ('constructor' in object && 'constructor' in other) &&
            !(typeof objCtor == 'function' && objCtor instanceof objCtor && typeof othCtor == 'function' && othCtor instanceof othCtor)) {
          return false;
        }
      }
      return true;
    }

    /**
     * Gets the extremum value of `collection` invoking `iteratee` for each value
     * in `collection` to generate the criterion by which the value is ranked.
     * The `iteratee` is invoked with three arguments; (value, index, collection).
     *
     * @private
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @param {boolean} [isMin] Specify returning the minimum, instead of the
     *  maximum, extremum value.
     * @returns {*} Returns the extremum value.
     */
    function extremumBy(collection, iteratee, isMin) {
      var exValue = isMin ? POSITIVE_INFINITY : NEGATIVE_INFINITY,
          computed = exValue,
          result = computed;

      baseEach(collection, function(value, index, collection) {
        var current = iteratee(value, index, collection);
        if ((isMin ? current < computed : current > computed) || (current === exValue && current === result)) {
          computed = current;
          result = value;
        }
      });
      return result;
    }

    /**
     * Gets the appropriate "callback" function. If the `_.callback` method is
     * customized this function returns the custom method, otherwise it returns
     * the `baseCallback` function. If arguments are provided the chosen function
     * is invoked with them and its result is returned.
     *
     * @private
     * @returns {Function} Returns the chosen function or its result.
     */
    function getCallback(func, thisArg, argCount) {
      var result = lodash.callback || callback;
      result = result === callback ? baseCallback : result;
      return argCount ? result(func, thisArg, argCount) : result;
    }

    /**
     * Gets metadata for `func`.
     *
     * @private
     * @param {Function} func The function to query.
     * @returns {*} Returns the metadata for `func`.
     */
    var getData = !metaMap ? noop : function(func) {
      return metaMap.get(func);
    };

    /**
     * Gets the appropriate "indexOf" function. If the `_.indexOf` method is
     * customized this function returns the custom method, otherwise it returns
     * the `baseIndexOf` function. If arguments are provided the chosen function
     * is invoked with them and its result is returned.
     *
     * @private
     * @returns {Function|number} Returns the chosen function or its result.
     */
    function getIndexOf(collection, target, fromIndex) {
      var result = lodash.indexOf || indexOf;
      result = result === indexOf ? baseIndexOf : result;
      return collection ? result(collection, target, fromIndex) : result;
    }

    /**
     * Gets the view, applying any `transforms` to the `start` and `end` positions.
     *
     * @private
     * @param {number} start The start of the view.
     * @param {number} end The end of the view.
     * @param {Array} [transforms] The transformations to apply to the view.
     * @returns {Object} Returns an object containing the `start` and `end`
     *  positions of the view.
     */
    function getView(start, end, transforms) {
      var index = -1,
          length = transforms ? transforms.length : 0;

      while (++index < length) {
        var data = transforms[index],
            size = data.size;

        switch (data.type) {
          case 'drop':      start += size; break;
          case 'dropRight': end -= size; break;
          case 'take':      end = nativeMin(end, start + size); break;
          case 'takeRight': start = nativeMax(start, end - size); break;
        }
      }
      return { 'start': start, 'end': end };
    }

    /**
     * Initializes an array clone.
     *
     * @private
     * @param {Array} array The array to clone.
     * @returns {Array} Returns the initialized clone.
     */
    function initCloneArray(array) {
      var length = array.length,
          result = new array.constructor(length);

      // Add array properties assigned by `RegExp#exec`.
      if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {
        result.index = array.index;
        result.input = array.input;
      }
      return result;
    }

    /**
     * Initializes an object clone.
     *
     * @private
     * @param {Object} object The object to clone.
     * @returns {Object} Returns the initialized clone.
     */
    function initCloneObject(object) {
      var Ctor = object.constructor;
      if (!(typeof Ctor == 'function' && Ctor instanceof Ctor)) {
        Ctor = Object;
      }
      return new Ctor;
    }

    /**
     * Initializes an object clone based on its `toStringTag`.
     *
     * **Note:** This function only supports cloning values with tags of
     * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
     *
     *
     * @private
     * @param {Object} object The object to clone.
     * @param {string} tag The `toStringTag` of the object to clone.
     * @param {boolean} [isDeep] Specify a deep clone.
     * @returns {Object} Returns the initialized clone.
     */
    function initCloneByTag(object, tag, isDeep) {
      var Ctor = object.constructor;
      switch (tag) {
        case arrayBufferTag:
          return bufferClone(object);

        case boolTag:
        case dateTag:
          return new Ctor(+object);

        case float32Tag: case float64Tag:
        case int8Tag: case int16Tag: case int32Tag:
        case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:
          var buffer = object.buffer;
          return new Ctor(isDeep ? bufferClone(buffer) : buffer, object.byteOffset, object.length);

        case numberTag:
        case stringTag:
          return new Ctor(object);

        case regexpTag:
          var result = new Ctor(object.source, reFlags.exec(object));
          result.lastIndex = object.lastIndex;
      }
      return result;
    }

    /**
     * Checks if `func` is eligible for `this` binding.
     *
     * @private
     * @param {Function} func The function to check.
     * @returns {boolean} Returns `true` if `func` is eligible, else `false`.
     */
    function isBindable(func) {
      var support = lodash.support,
          result = !(support.funcNames ? func.name : support.funcDecomp);

      if (!result) {
        var source = fnToString.call(func);
        if (!support.funcNames) {
          result = !reFuncName.test(source);
        }
        if (!result) {
          // Check if `func` references the `this` keyword and store the result.
          result = reThis.test(source) || isNative(func);
          baseSetData(func, result);
        }
      }
      return result;
    }

    /**
     * Checks if `value` is a valid array-like index.
     *
     * @private
     * @param {*} value The value to check.
     * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
     * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
     */
    function isIndex(value, length) {
      value = +value;
      length = length == null ? MAX_SAFE_INTEGER : length;
      return value > -1 && value % 1 == 0 && value < length;
    }

    /**
     * Checks if the provided arguments are from an iteratee call.
     *
     * @private
     * @param {*} value The potential iteratee value argument.
     * @param {*} index The potential iteratee index or key argument.
     * @param {*} object The potential iteratee object argument.
     * @returns {boolean} Returns `true` if the arguments are from an iteratee call, else `false`.
     */
    function isIterateeCall(value, index, object) {
      if (!isObject(object)) {
        return false;
      }
      var type = typeof index;
      if (type == 'number') {
        var length = object.length,
            prereq = isLength(length) && isIndex(index, length);
      } else {
        prereq = type == 'string' && index in object;
      }
      return prereq && object[index] === value;
    }

    /**
     * Checks if `value` is a valid array-like length.
     *
     * **Note:** This function is based on ES `ToLength`. See the
     * [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength)
     * for more details.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
     */
    function isLength(value) {
      return typeof value == 'number' && value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
    }

    /**
     * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` if suitable for strict
     *  equality comparisons, else `false`.
     */
    function isStrictComparable(value) {
      return value === value && (value === 0 ? ((1 / value) > 0) : !isObject(value));
    }

    /**
     * Merges the function metadata of `source` into `data`.
     *
     * Merging metadata reduces the number of wrappers required to invoke a function.
     * This is possible because methods like `_.bind`, `_.curry`, and `_.partial`
     * may be applied regardless of execution order. Methods like `_.ary` and `_.rearg`
     * augment function arguments, making the order in which they are executed important,
     * preventing the merging of metadata. However, we make an exception for a safe
     * common case where curried functions have `_.ary` and or `_.rearg` applied.
     *
     * @private
     * @param {Array} data The destination metadata.
     * @param {Array} source The source metadata.
     * @returns {Array} Returns `data`.
     */
    function mergeData(data, source) {
      var bitmask = data[1],
          srcBitmask = source[1],
          newBitmask = bitmask | srcBitmask;

      var arityFlags = ARY_FLAG | REARG_FLAG,
          bindFlags = BIND_FLAG | BIND_KEY_FLAG,
          comboFlags = arityFlags | bindFlags | CURRY_BOUND_FLAG | CURRY_RIGHT_FLAG;

      var isAry = bitmask & ARY_FLAG && !(srcBitmask & ARY_FLAG),
          isRearg = bitmask & REARG_FLAG && !(srcBitmask & REARG_FLAG),
          argPos = (isRearg ? data : source)[7],
          ary = (isAry ? data : source)[8];

      var isCommon = !(bitmask >= REARG_FLAG && srcBitmask > bindFlags) &&
        !(bitmask > bindFlags && srcBitmask >= REARG_FLAG);

      var isCombo = (newBitmask >= arityFlags && newBitmask <= comboFlags) &&
        (bitmask < REARG_FLAG || ((isRearg || isAry) && argPos.length <= ary));

      // Exit early if metadata can't be merged.
      if (!(isCommon || isCombo)) {
        return data;
      }
      // Use source `thisArg` if available.
      if (srcBitmask & BIND_FLAG) {
        data[2] = source[2];
        // Set when currying a bound function.
        newBitmask |= (bitmask & BIND_FLAG) ? 0 : CURRY_BOUND_FLAG;
      }
      // Compose partial arguments.
      var value = source[3];
      if (value) {
        var partials = data[3];
        data[3] = partials ? composeArgs(partials, value, source[4]) : arrayCopy(value);
        data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : arrayCopy(source[4]);
      }
      // Compose partial right arguments.
      value = source[5];
      if (value) {
        partials = data[5];
        data[5] = partials ? composeArgsRight(partials, value, source[6]) : arrayCopy(value);
        data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : arrayCopy(source[6]);
      }
      // Use source `argPos` if available.
      value = source[7];
      if (value) {
        data[7] = arrayCopy(value);
      }
      // Use source `ary` if it's smaller.
      if (srcBitmask & ARY_FLAG) {
        data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]);
      }
      // Use source `arity` if one is not provided.
      if (data[9] == null) {
        data[9] = source[9];
      }
      // Use source `func` and merge bitmasks.
      data[0] = source[0];
      data[1] = newBitmask;

      return data;
    }

    /**
     * A specialized version of `_.pick` that picks `object` properties specified
     * by the `props` array.
     *
     * @private
     * @param {Object} object The source object.
     * @param {string[]} props The property names to pick.
     * @returns {Object} Returns the new object.
     */
    function pickByArray(object, props) {
      object = toObject(object);

      var index = -1,
          length = props.length,
          result = {};

      while (++index < length) {
        var key = props[index];
        if (key in object) {
          result[key] = object[key];
        }
      }
      return result;
    }

    /**
     * A specialized version of `_.pick` that picks `object` properties `predicate`
     * returns truthy for.
     *
     * @private
     * @param {Object} object The source object.
     * @param {Function} predicate The function invoked per iteration.
     * @returns {Object} Returns the new object.
     */
    function pickByCallback(object, predicate) {
      var result = {};
      baseForIn(object, function(value, key, object) {
        if (predicate(value, key, object)) {
          result[key] = value;
        }
      });
      return result;
    }

    /**
     * Reorder `array` according to the specified indexes where the element at
     * the first index is assigned as the first element, the element at
     * the second index is assigned as the second element, and so on.
     *
     * @private
     * @param {Array} array The array to reorder.
     * @param {Array} indexes The arranged array indexes.
     * @returns {Array} Returns `array`.
     */
    function reorder(array, indexes) {
      var arrLength = array.length,
          length = nativeMin(indexes.length, arrLength),
          oldArray = arrayCopy(array);

      while (length--) {
        var index = indexes[length];
        array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined;
      }
      return array;
    }

    /**
     * Sets metadata for `func`.
     *
     * **Note:** If this function becomes hot, i.e. is invoked a lot in a short
     * period of time, it will trip its breaker and transition to an identity function
     * to avoid garbage collection pauses in V8. See [V8 issue 2070](https://code.google.com/p/v8/issues/detail?id=2070)
     * for more details.
     *
     * @private
     * @param {Function} func The function to associate metadata with.
     * @param {*} data The metadata.
     * @returns {Function} Returns `func`.
     */
    var setData = (function() {
      var count = 0,
          lastCalled = 0;

      return function(key, value) {
        var stamp = now(),
            remaining = HOT_SPAN - (stamp - lastCalled);

        lastCalled = stamp;
        if (remaining > 0) {
          if (++count >= HOT_COUNT) {
            return key;
          }
        } else {
          count = 0;
        }
        return baseSetData(key, value);
      };
    }());

    /**
     * A fallback implementation of `_.isPlainObject` which checks if `value`
     * is an object created by the `Object` constructor or has a `[[Prototype]]`
     * of `null`.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
     */
    function shimIsPlainObject(value) {
      var Ctor,
          support = lodash.support;

      // Exit early for non `Object` objects.
      if (!(isObjectLike(value) && objToString.call(value) == objectTag) ||
          (!hasOwnProperty.call(value, 'constructor') &&
            (Ctor = value.constructor, typeof Ctor == 'function' && !(Ctor instanceof Ctor)))) {
        return false;
      }
      // IE < 9 iterates inherited properties before own properties. If the first
      // iterated property is an object's own property then there are no inherited
      // enumerable properties.
      var result;
      // In most environments an object's own properties are iterated before
      // its inherited properties. If the last iterated property is an object's
      // own property then there are no inherited enumerable properties.
      baseForIn(value, function(subValue, key) {
        result = key;
      });
      return typeof result == 'undefined' || hasOwnProperty.call(value, result);
    }

    /**
     * A fallback implementation of `Object.keys` which creates an array of the
     * own enumerable property names of `object`.
     *
     * @private
     * @param {Object} object The object to inspect.
     * @returns {Array} Returns the array of property names.
     */
    function shimKeys(object) {
      var props = keysIn(object),
          propsLength = props.length,
          length = propsLength && object.length,
          support = lodash.support;

      var allowIndexes = length && isLength(length) &&
        (isArray(object) || (support.nonEnumArgs && isArguments(object)));

      var index = -1,
          result = [];

      while (++index < propsLength) {
        var key = props[index];
        if ((allowIndexes && isIndex(key, length)) || hasOwnProperty.call(object, key)) {
          result.push(key);
        }
      }
      return result;
    }

    /**
     * Converts `value` to an array-like object if it is not one.
     *
     * @private
     * @param {*} value The value to process.
     * @returns {Array|Object} Returns the array-like object.
     */
    function toIterable(value) {
      if (value == null) {
        return [];
      }
      if (!isLength(value.length)) {
        return values(value);
      }
      return isObject(value) ? value : Object(value);
    }

    /**
     * Converts `value` to an object if it is not one.
     *
     * @private
     * @param {*} value The value to process.
     * @returns {Object} Returns the object.
     */
    function toObject(value) {
      return isObject(value) ? value : Object(value);
    }

    /**
     * Creates a clone of `wrapper`.
     *
     * @private
     * @param {Object} wrapper The wrapper to clone.
     * @returns {Object} Returns the cloned wrapper.
     */
    function wrapperClone(wrapper) {
      return wrapper instanceof LazyWrapper
        ? wrapper.clone()
        : new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__, arrayCopy(wrapper.__actions__));
    }

    /*------------------------------------------------------------------------*/

    /**
     * Creates an array of elements split into groups the length of `size`.
     * If `collection` can't be split evenly, the final chunk will be the remaining
     * elements.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array to process.
     * @param {number} [size=1] The length of each chunk.
     * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
     * @returns {Array} Returns the new array containing chunks.
     * @example
     *
     * _.chunk(['a', 'b', 'c', 'd'], 2);
     * // => [['a', 'b'], ['c', 'd']]
     *
     * _.chunk(['a', 'b', 'c', 'd'], 3);
     * // => [['a', 'b', 'c'], ['d']]
     */
    function chunk(array, size, guard) {
      if (guard ? isIterateeCall(array, size, guard) : size == null) {
        size = 1;
      } else {
        size = nativeMax(+size || 1, 1);
      }
      var index = 0,
          length = array ? array.length : 0,
          resIndex = -1,
          result = Array(ceil(length / size));

      while (index < length) {
        result[++resIndex] = baseSlice(array, index, (index += size));
      }
      return result;
    }

    /**
     * Creates an array with all falsey values removed. The values `false`, `null`,
     * `0`, `""`, `undefined`, and `NaN` are falsey.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array to compact.
     * @returns {Array} Returns the new array of filtered values.
     * @example
     *
     * _.compact([0, 1, false, 2, '', 3]);
     * // => [1, 2, 3]
     */
    function compact(array) {
      var index = -1,
          length = array ? array.length : 0,
          resIndex = -1,
          result = [];

      while (++index < length) {
        var value = array[index];
        if (value) {
          result[++resIndex] = value;
        }
      }
      return result;
    }

    /**
     * Creates an array excluding all values of the provided arrays using
     * `SameValueZero` for equality comparisons.
     *
     * **Note:** `SameValueZero` comparisons are like strict equality comparisons,
     * e.g. `===`, except that `NaN` matches `NaN`. See the
     * [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero)
     * for more details.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {...Array} [values] The arrays of values to exclude.
     * @returns {Array} Returns the new array of filtered values.
     * @example
     *
     * _.difference([1, 2, 3], [5, 2, 10]);
     * // => [1, 3]
     */
    function difference() {
      var index = -1,
          length = arguments.length;

      while (++index < length) {
        var value = arguments[index];
        if (isArray(value) || isArguments(value)) {
          break;
        }
      }
      return baseDifference(value, baseFlatten(arguments, false, true, ++index));
    }

    /**
     * Creates a slice of `array` with `n` elements dropped from the beginning.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array to query.
     * @param {number} [n=1] The number of elements to drop.
     * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.drop([1, 2, 3]);
     * // => [2, 3]
     *
     * _.drop([1, 2, 3], 2);
     * // => [3]
     *
     * _.drop([1, 2, 3], 5);
     * // => []
     *
     * _.drop([1, 2, 3], 0);
     * // => [1, 2, 3]
     */
    function drop(array, n, guard) {
      var length = array ? array.length : 0;
      if (!length) {
        return [];
      }
      if (guard ? isIterateeCall(array, n, guard) : n == null) {
        n = 1;
      }
      return baseSlice(array, n < 0 ? 0 : n);
    }

    /**
     * Creates a slice of `array` with `n` elements dropped from the end.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array to query.
     * @param {number} [n=1] The number of elements to drop.
     * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.dropRight([1, 2, 3]);
     * // => [1, 2]
     *
     * _.dropRight([1, 2, 3], 2);
     * // => [1]
     *
     * _.dropRight([1, 2, 3], 5);
     * // => []
     *
     * _.dropRight([1, 2, 3], 0);
     * // => [1, 2, 3]
     */
    function dropRight(array, n, guard) {
      var length = array ? array.length : 0;
      if (!length) {
        return [];
      }
      if (guard ? isIterateeCall(array, n, guard) : n == null) {
        n = 1;
      }
      n = length - (+n || 0);
      return baseSlice(array, 0, n < 0 ? 0 : n);
    }

    /**
     * Creates a slice of `array` excluding elements dropped from the end.
     * Elements are dropped until `predicate` returns falsey. The predicate is
     * bound to `thisArg` and invoked with three arguments; (value, index, array).
     *
     * If a property name is provided for `predicate` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `predicate` the created "_.matches" style
     * callback returns `true` for elements that match the properties of the given
     * object, else `false`.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array to query.
     * @param {Function|Object|string} [predicate=_.identity] The function invoked
     *  per element.
     * @param {*} [thisArg] The `this` binding of `predicate`.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.dropRightWhile([1, 2, 3], function(n) { return n > 1; });
     * // => [1]
     *
     * var users = [
     *   { 'user': 'barney',  'age': 36, 'active': true },
     *   { 'user': 'fred',    'age': 40, 'active': false },
     *   { 'user': 'pebbles', 'age': 1,  'active': false }
     * ];
     *
     * // using the "_.matches" callback shorthand
     * _.pluck(_.dropRightWhile(users, { 'age': 1, 'active': false }), 'user');
     * // => ['barney', 'fred']
     *
     * // using the "_.matchesProperty" callback shorthand
     * _.pluck(_.dropRightWhile(users, 'active', false), 'user');
     * // => ['barney']
     *
     * // using the "_.property" callback shorthand
     * _.pluck(_.dropRightWhile(users, 'active'), 'user');
     * // => ['barney', 'fred', 'pebbles']
     */
    function dropRightWhile(array, predicate, thisArg) {
      var length = array ? array.length : 0;
      if (!length) {
        return [];
      }
      predicate = getCallback(predicate, thisArg, 3);
      while (length-- && predicate(array[length], length, array)) {}
      return baseSlice(array, 0, length + 1);
    }

    /**
     * Creates a slice of `array` excluding elements dropped from the beginning.
     * Elements are dropped until `predicate` returns falsey. The predicate is
     * bound to `thisArg` and invoked with three arguments; (value, index, array).
     *
     * If a property name is provided for `predicate` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `predicate` the created "_.matches" style
     * callback returns `true` for elements that have the properties of the given
     * object, else `false`.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array to query.
     * @param {Function|Object|string} [predicate=_.identity] The function invoked
     *  per element.
     * @param {*} [thisArg] The `this` binding of `predicate`.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.dropWhile([1, 2, 3], function(n) { return n < 3; });
     * // => [3]
     *
     * var users = [
     *   { 'user': 'barney',  'age': 36, 'active': false },
     *   { 'user': 'fred',    'age': 40, 'active': false },
     *   { 'user': 'pebbles', 'age': 1,  'active': true }
     * ];
     *
     * // using the "_.matches" callback shorthand
     * _.pluck(_.dropWhile(users, { 'age': 36, 'active': false }), 'user');
     * // => ['fred', 'pebbles']
     *
     * // using the "_.matchesProperty" callback shorthand
     * _.pluck(_.dropWhile(users, 'active', false), 'user');
     * // => ['pebbles']
     *
     * // using the "_.property" callback shorthand
     * _.pluck(_.dropWhile(users, 'active'), 'user');
     * // => ['barney', 'fred', 'pebbles']
     */
    function dropWhile(array, predicate, thisArg) {
      var length = array ? array.length : 0;
      if (!length) {
        return [];
      }
      var index = -1;
      predicate = getCallback(predicate, thisArg, 3);
      while (++index < length && predicate(array[index], index, array)) {}
      return baseSlice(array, index);
    }

    /**
     * Fills elements of `array` with `value` from `start` up to, but not
     * including, `end`.
     *
     * **Note:** This method mutates `array`.
     *
     * @private
     * @param {Array} array The array to fill.
     * @param {*} value The value to fill `array` with.
     * @param {number} [start=0] The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns `array`.
     */
    function fill(array, value, start, end) {
      var length = array ? array.length : 0;
      if (!length) {
        return [];
      }
      if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {
        start = 0;
        end = length;
      }
      return baseFill(array, value, start, end);
    }

    /**
     * This method is like `_.find` except that it returns the index of the first
     * element `predicate` returns truthy for, instead of the element itself.
     *
     * If a property name is provided for `predicate` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `predicate` the created "_.matches" style
     * callback returns `true` for elements that have the properties of the given
     * object, else `false`.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array to search.
     * @param {Function|Object|string} [predicate=_.identity] The function invoked
     *  per iteration. If a property name or object is provided it is used to
     *  create a "_.property" or "_.matches" style callback respectively.
     * @param {*} [thisArg] The `this` binding of `predicate`.
     * @returns {number} Returns the index of the found element, else `-1`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'age': 36, 'active': false },
     *   { 'user': 'fred',    'age': 40, 'active': true },
     *   { 'user': 'pebbles', 'age': 1,  'active': false }
     * ];
     *
     * _.findIndex(users, function(chr) { return chr.age < 40; });
     * // => 0
     *
     * // using the "_.matches" callback shorthand
     * _.findIndex(users, { 'age': 40, 'active': true });
     * // => 1
     *
     * // using the "_.matchesProperty" callback shorthand
     * _.findIndex(users, 'age', 1);
     * // => 2
     *
     * // using the "_.property" callback shorthand
     * _.findIndex(users, 'active');
     * // => 1
     */
    function findIndex(array, predicate, thisArg) {
      var index = -1,
          length = array ? array.length : 0;

      predicate = getCallback(predicate, thisArg, 3);
      while (++index < length) {
        if (predicate(array[index], index, array)) {
          return index;
        }
      }
      return -1;
    }

    /**
     * This method is like `_.findIndex` except that it iterates over elements
     * of `collection` from right to left.
     *
     * If a property name is provided for `predicate` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `predicate` the created "_.matches" style
     * callback returns `true` for elements that have the properties of the given
     * object, else `false`.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array to search.
     * @param {Function|Object|string} [predicate=_.identity] The function invoked
     *  per iteration. If a property name or object is provided it is used to
     *  create a "_.property" or "_.matches" style callback respectively.
     * @param {*} [thisArg] The `this` binding of `predicate`.
     * @returns {number} Returns the index of the found element, else `-1`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'age': 36, 'active': true },
     *   { 'user': 'fred',    'age': 40, 'active': false },
     *   { 'user': 'pebbles', 'age': 1,  'active': false }
     * ];
     *
     * _.findLastIndex(users, function(chr) { return chr.age < 40; });
     * // => 2
     *
     * // using the "_.matches" callback shorthand
     * _.findLastIndex(users, { 'age': 36, 'active': true });
     * // => 0
     *
     * // using the "_.matchesProperty" callback shorthand
     * _.findLastIndex(users, 'age', 40);
     * // => 1
     *
     * // using the "_.property" callback shorthand
     * _.findLastIndex(users, 'active');
     * // => 0
     */
    function findLastIndex(array, predicate, thisArg) {
      var length = array ? array.length : 0;
      predicate = getCallback(predicate, thisArg, 3);
      while (length--) {
        if (predicate(array[length], length, array)) {
          return length;
        }
      }
      return -1;
    }

    /**
     * Gets the first element of `array`.
     *
     * @static
     * @memberOf _
     * @alias head
     * @category Array
     * @param {Array} array The array to query.
     * @returns {*} Returns the first element of `array`.
     * @example
     *
     * _.first([1, 2, 3]);
     * // => 1
     *
     * _.first([]);
     * // => undefined
     */
    function first(array) {
      return array ? array[0] : undefined;
    }

    /**
     * Flattens a nested array. If `isDeep` is `true` the array is recursively
     * flattened, otherwise it is only flattened a single level.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array to flatten.
     * @param {boolean} [isDeep] Specify a deep flatten.
     * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * _.flatten([1, [2], [3, [[4]]]]);
     * // => [1, 2, 3, [[4]]];
     *
     * // using `isDeep`
     * _.flatten([1, [2], [3, [[4]]]], true);
     * // => [1, 2, 3, 4];
     */
    function flatten(array, isDeep, guard) {
      var length = array ? array.length : 0;
      if (guard && isIterateeCall(array, isDeep, guard)) {
        isDeep = false;
      }
      return length ? baseFlatten(array, isDeep) : [];
    }

    /**
     * Recursively flattens a nested array.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array to recursively flatten.
     * @returns {Array} Returns the new flattened array.
     * @example
     *
     * _.flattenDeep([1, [2], [3, [[4]]]]);
     * // => [1, 2, 3, 4];
     */
    function flattenDeep(array) {
      var length = array ? array.length : 0;
      return length ? baseFlatten(array, true) : [];
    }

    /**
     * Gets the index at which the first occurrence of `value` is found in `array`
     * using `SameValueZero` for equality comparisons. If `fromIndex` is negative,
     * it is used as the offset from the end of `array`. If `array` is sorted
     * providing `true` for `fromIndex` performs a faster binary search.
     *
     * **Note:** `SameValueZero` comparisons are like strict equality comparisons,
     * e.g. `===`, except that `NaN` matches `NaN`. See the
     * [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero)
     * for more details.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array to search.
     * @param {*} value The value to search for.
     * @param {boolean|number} [fromIndex=0] The index to search from or `true`
     *  to perform a binary search on a sorted array.
     * @returns {number} Returns the index of the matched value, else `-1`.
     * @example
     *
     * _.indexOf([1, 2, 3, 1, 2, 3], 2);
     * // => 1
     *
     * // using `fromIndex`
     * _.indexOf([1, 2, 3, 1, 2, 3], 2, 3);
     * // => 4
     *
     * // performing a binary search
     * _.indexOf([4, 4, 5, 5, 6, 6], 5, true);
     * // => 2
     */
    function indexOf(array, value, fromIndex) {
      var length = array ? array.length : 0;
      if (!length) {
        return -1;
      }
      if (typeof fromIndex == 'number') {
        fromIndex = fromIndex < 0 ? nativeMax(length + fromIndex, 0) : (fromIndex || 0);
      } else if (fromIndex) {
        var index = binaryIndex(array, value),
            other = array[index];

        return (value === value ? value === other : other !== other) ? index : -1;
      }
      return baseIndexOf(array, value, fromIndex);
    }

    /**
     * Gets all but the last element of `array`.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array to query.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.initial([1, 2, 3]);
     * // => [1, 2]
     */
    function initial(array) {
      return dropRight(array, 1);
    }

    /**
     * Creates an array of unique values in all provided arrays using `SameValueZero`
     * for equality comparisons.
     *
     * **Note:** `SameValueZero` comparisons are like strict equality comparisons,
     * e.g. `===`, except that `NaN` matches `NaN`. See the
     * [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero)
     * for more details.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @returns {Array} Returns the new array of shared values.
     * @example
     *
     * _.intersection([1, 2, 3], [5, 2, 1, 4], [2, 1]);
     * // => [1, 2]
     */
    function intersection() {
      var args = [],
          argsIndex = -1,
          argsLength = arguments.length,
          caches = [],
          indexOf = getIndexOf(),
          isCommon = indexOf == baseIndexOf;

      while (++argsIndex < argsLength) {
        var value = arguments[argsIndex];
        if (isArray(value) || isArguments(value)) {
          args.push(value);
          caches.push(isCommon && value.length >= 120 && createCache(argsIndex && value));
        }
      }
      argsLength = args.length;
      var array = args[0],
          index = -1,
          length = array ? array.length : 0,
          result = [],
          seen = caches[0];

      outer:
      while (++index < length) {
        value = array[index];
        if ((seen ? cacheIndexOf(seen, value) : indexOf(result, value)) < 0) {
          argsIndex = argsLength;
          while (--argsIndex) {
            var cache = caches[argsIndex];
            if ((cache ? cacheIndexOf(cache, value) : indexOf(args[argsIndex], value)) < 0) {
              continue outer;
            }
          }
          if (seen) {
            seen.push(value);
          }
          result.push(value);
        }
      }
      return result;
    }

    /**
     * Gets the last element of `array`.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array to query.
     * @returns {*} Returns the last element of `array`.
     * @example
     *
     * _.last([1, 2, 3]);
     * // => 3
     */
    function last(array) {
      var length = array ? array.length : 0;
      return length ? array[length - 1] : undefined;
    }

    /**
     * This method is like `_.indexOf` except that it iterates over elements of
     * `array` from right to left.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array to search.
     * @param {*} value The value to search for.
     * @param {boolean|number} [fromIndex=array.length-1] The index to search from
     *  or `true` to perform a binary search on a sorted array.
     * @returns {number} Returns the index of the matched value, else `-1`.
     * @example
     *
     * _.lastIndexOf([1, 2, 3, 1, 2, 3], 2);
     * // => 4
     *
     * // using `fromIndex`
     * _.lastIndexOf([1, 2, 3, 1, 2, 3], 2, 3);
     * // => 1
     *
     * // performing a binary search
     * _.lastIndexOf([4, 4, 5, 5, 6, 6], 5, true);
     * // => 3
     */
    function lastIndexOf(array, value, fromIndex) {
      var length = array ? array.length : 0;
      if (!length) {
        return -1;
      }
      var index = length;
      if (typeof fromIndex == 'number') {
        index = (fromIndex < 0 ? nativeMax(length + fromIndex, 0) : nativeMin(fromIndex || 0, length - 1)) + 1;
      } else if (fromIndex) {
        index = binaryIndex(array, value, true) - 1;
        var other = array[index];
        return (value === value ? value === other : other !== other) ? index : -1;
      }
      if (value !== value) {
        return indexOfNaN(array, index, true);
      }
      while (index--) {
        if (array[index] === value) {
          return index;
        }
      }
      return -1;
    }

    /**
     * Removes all provided values from `array` using `SameValueZero` for equality
     * comparisons.
     *
     * **Notes:**
     *  - Unlike `_.without`, this method mutates `array`.
     *  - `SameValueZero` comparisons are like strict equality comparisons, e.g. `===`,
     *    except that `NaN` matches `NaN`. See the [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero)
     *    for more details.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array to modify.
     * @param {...*} [values] The values to remove.
     * @returns {Array} Returns `array`.
     * @example
     *
     * var array = [1, 2, 3, 1, 2, 3];
     * _.pull(array, 2, 3);
     * console.log(array);
     * // => [1, 1]
     */
    function pull() {
      var array = arguments[0];
      if (!(array && array.length)) {
        return array;
      }
      var index = 0,
          indexOf = getIndexOf(),
          length = arguments.length;

      while (++index < length) {
        var fromIndex = 0,
            value = arguments[index];

        while ((fromIndex = indexOf(array, value, fromIndex)) > -1) {
          splice.call(array, fromIndex, 1);
        }
      }
      return array;
    }

    /**
     * Removes elements from `array` corresponding to the given indexes and returns
     * an array of the removed elements. Indexes may be specified as an array of
     * indexes or as individual arguments.
     *
     * **Note:** Unlike `_.at`, this method mutates `array`.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array to modify.
     * @param {...(number|number[])} [indexes] The indexes of elements to remove,
     *  specified as individual indexes or arrays of indexes.
     * @returns {Array} Returns the new array of removed elements.
     * @example
     *
     * var array = [5, 10, 15, 20];
     * var evens = _.pullAt(array, [1, 3]);
     *
     * console.log(array);
     * // => [5, 15]
     *
     * console.log(evens);
     * // => [10, 20]
     */
    function pullAt(array) {
      return basePullAt(array || [], baseFlatten(arguments, false, false, 1));
    }

    /**
     * Removes all elements from `array` that `predicate` returns truthy for
     * and returns an array of the removed elements. The predicate is bound to
     * `thisArg` and invoked with three arguments; (value, index, array).
     *
     * If a property name is provided for `predicate` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `predicate` the created "_.matches" style
     * callback returns `true` for elements that have the properties of the given
     * object, else `false`.
     *
     * **Note:** Unlike `_.filter`, this method mutates `array`.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array to modify.
     * @param {Function|Object|string} [predicate=_.identity] The function invoked
     *  per iteration. If a property name or object is provided it is used to
     *  create a "_.property" or "_.matches" style callback respectively.
     * @param {*} [thisArg] The `this` binding of `predicate`.
     * @returns {Array} Returns the new array of removed elements.
     * @example
     *
     * var array = [1, 2, 3, 4];
     * var evens = _.remove(array, function(n) { return n % 2 == 0; });
     *
     * console.log(array);
     * // => [1, 3]
     *
     * console.log(evens);
     * // => [2, 4]
     */
    function remove(array, predicate, thisArg) {
      var index = -1,
          length = array ? array.length : 0,
          result = [];

      predicate = getCallback(predicate, thisArg, 3);
      while (++index < length) {
        var value = array[index];
        if (predicate(value, index, array)) {
          result.push(value);
          splice.call(array, index--, 1);
          length--;
        }
      }
      return result;
    }

    /**
     * Gets all but the first element of `array`.
     *
     * @static
     * @memberOf _
     * @alias tail
     * @category Array
     * @param {Array} array The array to query.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.rest([1, 2, 3]);
     * // => [2, 3]
     */
    function rest(array) {
      return drop(array, 1);
    }

    /**
     * Creates a slice of `array` from `start` up to, but not including, `end`.
     *
     * **Note:** This function is used instead of `Array#slice` to support node
     * lists in IE < 9 and to ensure dense arrays are returned.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array to slice.
     * @param {number} [start=0] The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns the slice of `array`.
     */
    function slice(array, start, end) {
      var length = array ? array.length : 0;
      if (!length) {
        return [];
      }
      if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {
        start = 0;
        end = length;
      }
      return baseSlice(array, start, end);
    }

    /**
     * Uses a binary search to determine the lowest index at which `value` should
     * be inserted into `array` in order to maintain its sort order. If an iteratee
     * function is provided it is invoked for `value` and each element of `array`
     * to compute their sort ranking. The iteratee is bound to `thisArg` and
     * invoked with one argument; (value).
     *
     * If a property name is provided for `predicate` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `predicate` the created "_.matches" style
     * callback returns `true` for elements that have the properties of the given
     * object, else `false`.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @param {Function|Object|string} [iteratee=_.identity] The function invoked
     *  per iteration. If a property name or object is provided it is used to
     *  create a "_.property" or "_.matches" style callback respectively.
     * @param {*} [thisArg] The `this` binding of `iteratee`.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     * @example
     *
     * _.sortedIndex([30, 50], 40);
     * // => 1
     *
     * _.sortedIndex([4, 4, 5, 5, 6, 6], 5);
     * // => 2
     *
     * var dict = { 'data': { 'thirty': 30, 'forty': 40, 'fifty': 50 } };
     *
     * // using an iteratee function
     * _.sortedIndex(['thirty', 'fifty'], 'forty', function(word) {
     *   return this.data[word];
     * }, dict);
     * // => 1
     *
     * // using the "_.property" callback shorthand
     * _.sortedIndex([{ 'x': 30 }, { 'x': 50 }], { 'x': 40 }, 'x');
     * // => 1
     */
    function sortedIndex(array, value, iteratee, thisArg) {
      var func = getCallback(iteratee);
      return (func === baseCallback && iteratee == null)
        ? binaryIndex(array, value)
        : binaryIndexBy(array, value, func(iteratee, thisArg, 1));
    }

    /**
     * This method is like `_.sortedIndex` except that it returns the highest
     * index at which `value` should be inserted into `array` in order to
     * maintain its sort order.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The sorted array to inspect.
     * @param {*} value The value to evaluate.
     * @param {Function|Object|string} [iteratee=_.identity] The function invoked
     *  per iteration. If a property name or object is provided it is used to
     *  create a "_.property" or "_.matches" style callback respectively.
     * @param {*} [thisArg] The `this` binding of `iteratee`.
     * @returns {number} Returns the index at which `value` should be inserted
     *  into `array`.
     * @example
     *
     * _.sortedLastIndex([4, 4, 5, 5, 6, 6], 5);
     * // => 4
     */
    function sortedLastIndex(array, value, iteratee, thisArg) {
      var func = getCallback(iteratee);
      return (func === baseCallback && iteratee == null)
        ? binaryIndex(array, value, true)
        : binaryIndexBy(array, value, func(iteratee, thisArg, 1), true);
    }

    /**
     * Creates a slice of `array` with `n` elements taken from the beginning.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array to query.
     * @param {number} [n=1] The number of elements to take.
     * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.take([1, 2, 3]);
     * // => [1]
     *
     * _.take([1, 2, 3], 2);
     * // => [1, 2]
     *
     * _.take([1, 2, 3], 5);
     * // => [1, 2, 3]
     *
     * _.take([1, 2, 3], 0);
     * // => []
     */
    function take(array, n, guard) {
      var length = array ? array.length : 0;
      if (!length) {
        return [];
      }
      if (guard ? isIterateeCall(array, n, guard) : n == null) {
        n = 1;
      }
      return baseSlice(array, 0, n < 0 ? 0 : n);
    }

    /**
     * Creates a slice of `array` with `n` elements taken from the end.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array to query.
     * @param {number} [n=1] The number of elements to take.
     * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.takeRight([1, 2, 3]);
     * // => [3]
     *
     * _.takeRight([1, 2, 3], 2);
     * // => [2, 3]
     *
     * _.takeRight([1, 2, 3], 5);
     * // => [1, 2, 3]
     *
     * _.takeRight([1, 2, 3], 0);
     * // => []
     */
    function takeRight(array, n, guard) {
      var length = array ? array.length : 0;
      if (!length) {
        return [];
      }
      if (guard ? isIterateeCall(array, n, guard) : n == null) {
        n = 1;
      }
      n = length - (+n || 0);
      return baseSlice(array, n < 0 ? 0 : n);
    }

    /**
     * Creates a slice of `array` with elements taken from the end. Elements are
     * taken until `predicate` returns falsey. The predicate is bound to `thisArg`
     * and invoked with three arguments; (value, index, array).
     *
     * If a property name is provided for `predicate` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `predicate` the created "_.matches" style
     * callback returns `true` for elements that have the properties of the given
     * object, else `false`.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array to query.
     * @param {Function|Object|string} [predicate=_.identity] The function invoked
     *  per element.
     * @param {*} [thisArg] The `this` binding of `predicate`.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.takeRightWhile([1, 2, 3], function(n) { return n > 1; });
     * // => [2, 3]
     *
     * var users = [
     *   { 'user': 'barney',  'age': 36, 'active': true },
     *   { 'user': 'fred',    'age': 40, 'active': false },
     *   { 'user': 'pebbles', 'age': 1,  'active': false }
     * ];
     *
     * // using the "_.matches" callback shorthand
     * _.pluck(_.takeRightWhile(users, { 'age': 1, 'active': true }), 'user');
     * // => ['pebbles']
     *
     * // using the "_.matchesProperty" callback shorthand
     * _.pluck(_.takeRightWhile(users, 'active', false), 'user');
     * // => ['fred', 'pebbles']
     *
     * // using the "_.property" callback shorthand
     * _.pluck(_.takeRightWhile(users, 'active'), 'user');
     * // => []
     */
    function takeRightWhile(array, predicate, thisArg) {
      var length = array ? array.length : 0;
      if (!length) {
        return [];
      }
      predicate = getCallback(predicate, thisArg, 3);
      while (length-- && predicate(array[length], length, array)) {}
      return baseSlice(array, length + 1);
    }

    /**
     * Creates a slice of `array` with elements taken from the beginning. Elements
     * are taken until `predicate` returns falsey. The predicate is bound to
     * `thisArg` and invoked with three arguments; (value, index, array).
     *
     * If a property name is provided for `predicate` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `predicate` the created "_.matches" style
     * callback returns `true` for elements that have the properties of the given
     * object, else `false`.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array to query.
     * @param {Function|Object|string} [predicate=_.identity] The function invoked
     *  per element.
     * @param {*} [thisArg] The `this` binding of `predicate`.
     * @returns {Array} Returns the slice of `array`.
     * @example
     *
     * _.takeWhile([1, 2, 3], function(n) { return n < 3; });
     * // => [1, 2]
     *
     * var users = [
     *   { 'user': 'barney',  'age': 36, 'active': false },
     *   { 'user': 'fred',    'age': 40, 'active': false },
     *   { 'user': 'pebbles', 'age': 1,  'active': true }
     * ];
     *
     * // using the "_.matches" callback shorthand
     * _.pluck(_.takeWhile(users, { 'age': 36, 'active': true }), 'user');
     * // => ['barney']
     *
     * // using the "_.matchesProperty" callback shorthand
     * _.pluck(_.takeWhile(users, 'active', false), 'user');
     * // => ['barney', 'fred']
     *
     * // using the "_.property" callback shorthand
     * _.pluck(_.takeWhile(users, 'active'), 'user');
     * // => []
     */
    function takeWhile(array, predicate, thisArg) {
      var length = array ? array.length : 0;
      if (!length) {
        return [];
      }
      var index = -1;
      predicate = getCallback(predicate, thisArg, 3);
      while (++index < length && predicate(array[index], index, array)) {}
      return baseSlice(array, 0, index);
    }

    /**
     * Creates an array of unique values, in order, of the provided arrays using
     * `SameValueZero` for equality comparisons.
     *
     * **Note:** `SameValueZero` comparisons are like strict equality comparisons,
     * e.g. `===`, except that `NaN` matches `NaN`. See the
     * [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero)
     * for more details.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @returns {Array} Returns the new array of combined values.
     * @example
     *
     * _.union([1, 2, 3], [5, 2, 1, 4], [2, 1]);
     * // => [1, 2, 3, 5, 4]
     */
    function union() {
      return baseUniq(baseFlatten(arguments, false, true));
    }

    /**
     * Creates a duplicate-value-free version of an array using `SameValueZero`
     * for equality comparisons. Providing `true` for `isSorted` performs a faster
     * search algorithm for sorted arrays. If an iteratee function is provided it
     * is invoked for each value in the array to generate the criterion by which
     * uniqueness is computed. The `iteratee` is bound to `thisArg` and invoked
     * with three arguments; (value, index, array).
     *
     * If a property name is provided for `predicate` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `predicate` the created "_.matches" style
     * callback returns `true` for elements that have the properties of the given
     * object, else `false`.
     *
     * **Note:** `SameValueZero` comparisons are like strict equality comparisons,
     * e.g. `===`, except that `NaN` matches `NaN`. See the
     * [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero)
     * for more details.
     *
     * @static
     * @memberOf _
     * @alias unique
     * @category Array
     * @param {Array} array The array to inspect.
     * @param {boolean} [isSorted] Specify the array is sorted.
     * @param {Function|Object|string} [iteratee] The function invoked per iteration.
     *  If a property name or object is provided it is used to create a "_.property"
     *  or "_.matches" style callback respectively.
     * @param {*} [thisArg] The `this` binding of `iteratee`.
     * @returns {Array} Returns the new duplicate-value-free array.
     * @example
     *
     * _.uniq([1, 2, 1]);
     * // => [1, 2]
     *
     * // using `isSorted`
     * _.uniq([1, 1, 2], true);
     * // => [1, 2]
     *
     * // using an iteratee function
     * _.uniq([1, 2.5, 1.5, 2], function(n) { return this.floor(n); }, Math);
     * // => [1, 2.5]
     *
     * // using the "_.property" callback shorthand
     * _.uniq([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');
     * // => [{ 'x': 1 }, { 'x': 2 }]
     */
    function uniq(array, isSorted, iteratee, thisArg) {
      var length = array ? array.length : 0;
      if (!length) {
        return [];
      }
      // Juggle arguments.
      if (typeof isSorted != 'boolean' && isSorted != null) {
        thisArg = iteratee;
        iteratee = isIterateeCall(array, isSorted, thisArg) ? null : isSorted;
        isSorted = false;
      }
      var func = getCallback();
      if (!(func === baseCallback && iteratee == null)) {
        iteratee = func(iteratee, thisArg, 3);
      }
      return (isSorted && getIndexOf() == baseIndexOf)
        ? sortedUniq(array, iteratee)
        : baseUniq(array, iteratee);
    }

    /**
     * This method is like `_.zip` except that it accepts an array of grouped
     * elements and creates an array regrouping the elements to their pre-`_.zip`
     * configuration.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array of grouped elements to process.
     * @returns {Array} Returns the new array of regrouped elements.
     * @example
     *
     * var zipped = _.zip(['fred', 'barney'], [30, 40], [true, false]);
     * // => [['fred', 30, true], ['barney', 40, false]]
     *
     * _.unzip(zipped);
     * // => [['fred', 'barney'], [30, 40], [true, false]]
     */
    function unzip(array) {
      var index = -1,
          length = (array && array.length && arrayMax(arrayMap(array, getLength))) >>> 0,
          result = Array(length);

      while (++index < length) {
        result[index] = arrayMap(array, baseProperty(index));
      }
      return result;
    }

    /**
     * Creates an array excluding all provided values using `SameValueZero` for
     * equality comparisons.
     *
     * **Note:** `SameValueZero` comparisons are like strict equality comparisons,
     * e.g. `===`, except that `NaN` matches `NaN`. See the
     * [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero)
     * for more details.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {Array} array The array to filter.
     * @param {...*} [values] The values to exclude.
     * @returns {Array} Returns the new array of filtered values.
     * @example
     *
     * _.without([1, 2, 1, 0, 3, 1, 4], 0, 1);
     * // => [2, 3, 4]
     */
    function without(array) {
      return baseDifference(array, baseSlice(arguments, 1));
    }

    /**
     * Creates an array that is the symmetric difference of the provided arrays.
     * See [Wikipedia](https://en.wikipedia.org/wiki/Symmetric_difference) for
     * more details.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {...Array} [arrays] The arrays to inspect.
     * @returns {Array} Returns the new array of values.
     * @example
     *
     * _.xor([1, 2, 3], [5, 2, 1, 4]);
     * // => [3, 5, 4]
     *
     * _.xor([1, 2, 5], [2, 3, 5], [3, 4, 5]);
     * // => [1, 4, 5]
     */
    function xor() {
      var index = -1,
          length = arguments.length;

      while (++index < length) {
        var array = arguments[index];
        if (isArray(array) || isArguments(array)) {
          var result = result
            ? baseDifference(result, array).concat(baseDifference(array, result))
            : array;
        }
      }
      return result ? baseUniq(result) : [];
    }

    /**
     * Creates an array of grouped elements, the first of which contains the first
     * elements of the given arrays, the second of which contains the second elements
     * of the given arrays, and so on.
     *
     * @static
     * @memberOf _
     * @category Array
     * @param {...Array} [arrays] The arrays to process.
     * @returns {Array} Returns the new array of grouped elements.
     * @example
     *
     * _.zip(['fred', 'barney'], [30, 40], [true, false]);
     * // => [['fred', 30, true], ['barney', 40, false]]
     */
    function zip() {
      var length = arguments.length,
          array = Array(length);

      while (length--) {
        array[length] = arguments[length];
      }
      return unzip(array);
    }

    /**
     * Creates an object composed from arrays of property names and values. Provide
     * either a single two dimensional array, e.g. `[[key1, value1], [key2, value2]]`
     * or two arrays, one of property names and one of corresponding values.
     *
     * @static
     * @memberOf _
     * @alias object
     * @category Array
     * @param {Array} props The property names.
     * @param {Array} [values=[]] The property values.
     * @returns {Object} Returns the new object.
     * @example
     *
     * _.zipObject(['fred', 'barney'], [30, 40]);
     * // => { 'fred': 30, 'barney': 40 }
     */
    function zipObject(props, values) {
      var index = -1,
          length = props ? props.length : 0,
          result = {};

      if (length && !values && !isArray(props[0])) {
        values = [];
      }
      while (++index < length) {
        var key = props[index];
        if (values) {
          result[key] = values[index];
        } else if (key) {
          result[key[0]] = key[1];
        }
      }
      return result;
    }

    /*------------------------------------------------------------------------*/

    /**
     * Creates a `lodash` object that wraps `value` with explicit method
     * chaining enabled.
     *
     * @static
     * @memberOf _
     * @category Chain
     * @param {*} value The value to wrap.
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'age': 36 },
     *   { 'user': 'fred',    'age': 40 },
     *   { 'user': 'pebbles', 'age': 1 }
     * ];
     *
     * var youngest = _.chain(users)
     *   .sortBy('age')
     *   .map(function(chr) { return chr.user + ' is ' + chr.age; })
     *   .first()
     *   .value();
     * // => 'pebbles is 1'
     */
    function chain(value) {
      var result = lodash(value);
      result.__chain__ = true;
      return result;
    }

    /**
     * This method invokes `interceptor` and returns `value`. The interceptor is
     * bound to `thisArg` and invoked with one argument; (value). The purpose of
     * this method is to "tap into" a method chain in order to perform operations
     * on intermediate results within the chain.
     *
     * @static
     * @memberOf _
     * @category Chain
     * @param {*} value The value to provide to `interceptor`.
     * @param {Function} interceptor The function to invoke.
     * @param {*} [thisArg] The `this` binding of `interceptor`.
     * @returns {*} Returns `value`.
     * @example
     *
     * _([1, 2, 3])
     *  .tap(function(array) { array.pop(); })
     *  .reverse()
     *  .value();
     * // => [2, 1]
     */
    function tap(value, interceptor, thisArg) {
      interceptor.call(thisArg, value);
      return value;
    }

    /**
     * This method is like `_.tap` except that it returns the result of `interceptor`.
     *
     * @static
     * @memberOf _
     * @category Chain
     * @param {*} value The value to provide to `interceptor`.
     * @param {Function} interceptor The function to invoke.
     * @param {*} [thisArg] The `this` binding of `interceptor`.
     * @returns {*} Returns the result of `interceptor`.
     * @example
     *
     * _([1, 2, 3])
     *  .last()
     *  .thru(function(value) { return [value]; })
     *  .value();
     * // => [3]
     */
    function thru(value, interceptor, thisArg) {
      return interceptor.call(thisArg, value);
    }

    /**
     * Enables explicit method chaining on the wrapper object.
     *
     * @name chain
     * @memberOf _
     * @category Chain
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36 },
     *   { 'user': 'fred',   'age': 40 }
     * ];
     *
     * // without explicit chaining
     * _(users).first();
     * // => { 'user': 'barney', 'age': 36 }
     *
     * // with explicit chaining
     * _(users).chain()
     *   .first()
     *   .pick('user')
     *   .value();
     * // => { 'user': 'barney' }
     */
    function wrapperChain() {
      return chain(this);
    }

    /**
     * Executes the chained sequence and returns the wrapped result.
     *
     * @name commit
     * @memberOf _
     * @category Chain
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var array = [1, 2];
     * var wrapper = _(array).push(3);
     *
     * console.log(array);
     * // => [1, 2]
     *
     * wrapper = wrapper.commit();
     * console.log(array);
     * // => [1, 2, 3]
     *
     * wrapper.last();
     * // => 3
     *
     * console.log(array);
     * // => [1, 2, 3]
     */
    function wrapperCommit() {
      return new LodashWrapper(this.value(), this.__chain__);
    }

    /**
     * Creates a clone of the chained sequence planting `value` as the wrapped value.
     *
     * @name plant
     * @memberOf _
     * @category Chain
     * @returns {Object} Returns the new `lodash` wrapper instance.
     * @example
     *
     * var array = [1, 2];
     * var wrapper = _(array).map(_.partial(Math.pow, _, 2));
     *
     * var other = [3, 4];
     * var otherWrapper = wrapper.plant(other);
     *
     * otherWrapper.value();
     * // => [9, 16]
     *
     * wrapper.value();
     * // => [1, 4]
     */
    function wrapperPlant(value) {
      var result,
          parent = this;

      while (parent instanceof LodashWrapper) {
        var clone = wrapperClone(parent);
        if (result) {
          previous.__wrapped__ = clone;
        } else {
          result = clone;
        }
        var previous = clone;
        parent = parent.__wrapped__;
      }
      previous.__wrapped__ = value;
      return result;
    }

    /**
     * Reverses the wrapped array so the first element becomes the last, the
     * second element becomes the second to last, and so on.
     *
     * **Note:** This method mutates the wrapped array.
     *
     * @name reverse
     * @memberOf _
     * @category Chain
     * @returns {Object} Returns the new reversed `lodash` wrapper instance.
     * @example
     *
     * var array = [1, 2, 3];
     *
     * _(array).reverse().value()
     * // => [3, 2, 1]
     *
     * console.log(array);
     * // => [3, 2, 1]
     */
    function wrapperReverse() {
      var value = this.__wrapped__;
      if (value instanceof LazyWrapper) {
        if (this.__actions__.length) {
          value = new LazyWrapper(this);
        }
        return new LodashWrapper(value.reverse(), this.__chain__);
      }
      return this.thru(function(value) {
        return value.reverse();
      });
    }

    /**
     * Produces the result of coercing the unwrapped value to a string.
     *
     * @name toString
     * @memberOf _
     * @category Chain
     * @returns {string} Returns the coerced string value.
     * @example
     *
     * _([1, 2, 3]).toString();
     * // => '1,2,3'
     */
    function wrapperToString() {
      return (this.value() + '');
    }

    /**
     * Executes the chained sequence to extract the unwrapped value.
     *
     * @name value
     * @memberOf _
     * @alias run, toJSON, valueOf
     * @category Chain
     * @returns {*} Returns the resolved unwrapped value.
     * @example
     *
     * _([1, 2, 3]).value();
     * // => [1, 2, 3]
     */
    function wrapperValue() {
      return baseWrapperValue(this.__wrapped__, this.__actions__);
    }

    /*------------------------------------------------------------------------*/

    /**
     * Creates an array of elements corresponding to the given keys, or indexes,
     * of `collection`. Keys may be specified as individual arguments or as arrays
     * of keys.
     *
     * @static
     * @memberOf _
     * @category Collection
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {...(number|number[]|string|string[])} [props] The property names
     *  or indexes of elements to pick, specified individually or in arrays.
     * @returns {Array} Returns the new array of picked elements.
     * @example
     *
     * _.at(['a', 'b', 'c', 'd', 'e'], [0, 2, 4]);
     * // => ['a', 'c', 'e']
     *
     * _.at(['fred', 'barney', 'pebbles'], 0, 2);
     * // => ['fred', 'pebbles']
     */
    function at(collection) {
      var length = collection ? collection.length : 0;
      if (isLength(length)) {
        collection = toIterable(collection);
      }
      return baseAt(collection, baseFlatten(arguments, false, false, 1));
    }

    /**
     * Checks if `value` is in `collection` using `SameValueZero` for equality
     * comparisons. If `fromIndex` is negative, it is used as the offset from
     * the end of `collection`.
     *
     * **Note:** `SameValueZero` comparisons are like strict equality comparisons,
     * e.g. `===`, except that `NaN` matches `NaN`. See the
     * [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero)
     * for more details.
     *
     * @static
     * @memberOf _
     * @alias contains, include
     * @category Collection
     * @param {Array|Object|string} collection The collection to search.
     * @param {*} target The value to search for.
     * @param {number} [fromIndex=0] The index to search from.
     * @returns {boolean} Returns `true` if a matching element is found, else `false`.
     * @example
     *
     * _.includes([1, 2, 3], 1);
     * // => true
     *
     * _.includes([1, 2, 3], 1, 2);
     * // => false
     *
     * _.includes({ 'user': 'fred', 'age': 40 }, 'fred');
     * // => true
     *
     * _.includes('pebbles', 'eb');
     * // => true
     */
    function includes(collection, target, fromIndex) {
      var length = collection ? collection.length : 0;
      if (!isLength(length)) {
        collection = values(collection);
        length = collection.length;
      }
      if (!length) {
        return false;
      }
      if (typeof fromIndex == 'number') {
        fromIndex = fromIndex < 0 ? nativeMax(length + fromIndex, 0) : (fromIndex || 0);
      } else {
        fromIndex = 0;
      }
      return (typeof collection == 'string' || !isArray(collection) && isString(collection))
        ? (fromIndex < length && collection.indexOf(target, fromIndex) > -1)
        : (getIndexOf(collection, target, fromIndex) > -1);
    }

    /**
     * Creates an object composed of keys generated from the results of running
     * each element of `collection` through `iteratee`. The corresponding value
     * of each key is the number of times the key was returned by `iteratee`.
     * The `iteratee` is bound to `thisArg` and invoked with three arguments;
     * (value, index|key, collection).
     *
     * If a property name is provided for `predicate` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `predicate` the created "_.matches" style
     * callback returns `true` for elements that have the properties of the given
     * object, else `false`.
     *
     * @static
     * @memberOf _
     * @category Collection
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|Object|string} [iteratee=_.identity] The function invoked
     *  per iteration. If a property name or object is provided it is used to
     *  create a "_.property" or "_.matches" style callback respectively.
     * @param {*} [thisArg] The `this` binding of `iteratee`.
     * @returns {Object} Returns the composed aggregate object.
     * @example
     *
     * _.countBy([4.3, 6.1, 6.4], function(n) { return Math.floor(n); });
     * // => { '4': 1, '6': 2 }
     *
     * _.countBy([4.3, 6.1, 6.4], function(n) { return this.floor(n); }, Math);
     * // => { '4': 1, '6': 2 }
     *
     * _.countBy(['one', 'two', 'three'], 'length');
     * // => { '3': 2, '5': 1 }
     */
    var countBy = createAggregator(function(result, value, key) {
      hasOwnProperty.call(result, key) ? ++result[key] : (result[key] = 1);
    });

    /**
     * Checks if `predicate` returns truthy for **all** elements of `collection`.
     * The predicate is bound to `thisArg` and invoked with three arguments;
     * (value, index|key, collection).
     *
     * If a property name is provided for `predicate` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `predicate` the created "_.matches" style
     * callback returns `true` for elements that have the properties of the given
     * object, else `false`.
     *
     * @static
     * @memberOf _
     * @alias all
     * @category Collection
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|Object|string} [predicate=_.identity] The function invoked
     *  per iteration. If a property name or object is provided it is used to
     *  create a "_.property" or "_.matches" style callback respectively.
     * @param {*} [thisArg] The `this` binding of `predicate`.
     * @returns {boolean} Returns `true` if all elements pass the predicate check,
     *  else `false`.
     * @example
     *
     * _.every([true, 1, null, 'yes']);
     * // => false
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36, 'active': false },
     *   { 'user': 'fred',   'age': 40, 'active': false }
     * ];
     *
     * // using the "_.matches" callback shorthand
     * _.every(users, { 'age': 36, 'active': false });
     * // => false
     *
     * // using the "_.matchesProperty" callback shorthand
     * _.every(users, 'active', false);
     * // => true
     *
     * // using the "_.property" callback shorthand
     * _.every(users, 'active');
     * // => false
     */
    function every(collection, predicate, thisArg) {
      var func = isArray(collection) ? arrayEvery : baseEvery;
      if (typeof predicate != 'function' || typeof thisArg != 'undefined') {
        predicate = getCallback(predicate, thisArg, 3);
      }
      return func(collection, predicate);
    }

    /**
     * Iterates over elements of `collection`, returning an array of all elements
     * `predicate` returns truthy for. The predicate is bound to `thisArg` and
     * invoked with three arguments; (value, index|key, collection).
     *
     * If a property name is provided for `predicate` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `predicate` the created "_.matches" style
     * callback returns `true` for elements that have the properties of the given
     * object, else `false`.
     *
     * @static
     * @memberOf _
     * @alias select
     * @category Collection
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|Object|string} [predicate=_.identity] The function invoked
     *  per iteration. If a property name or object is provided it is used to
     *  create a "_.property" or "_.matches" style callback respectively.
     * @param {*} [thisArg] The `this` binding of `predicate`.
     * @returns {Array} Returns the new filtered array.
     * @example
     *
     * var evens = _.filter([1, 2, 3, 4], function(n) { return n % 2 == 0; });
     * // => [2, 4]
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36, 'active': true },
     *   { 'user': 'fred',   'age': 40, 'active': false }
     * ];
     *
     * // using the "_.matches" callback shorthand
     * _.pluck(_.filter(users, { 'age': 36, 'active': true }), 'user');
     * // => ['barney']
     *
     * // using the "_.matchesProperty" callback shorthand
     * _.pluck(_.filter(users, 'active', false), 'user');
     * // => ['fred']
     *
     * // using the "_.property" callback shorthand
     * _.pluck(_.filter(users, 'active'), 'user');
     * // => ['barney']
     */
    function filter(collection, predicate, thisArg) {
      var func = isArray(collection) ? arrayFilter : baseFilter;
      predicate = getCallback(predicate, thisArg, 3);
      return func(collection, predicate);
    }

    /**
     * Iterates over elements of `collection`, returning the first element
     * `predicate` returns truthy for. The predicate is bound to `thisArg` and
     * invoked with three arguments; (value, index|key, collection).
     *
     * If a property name is provided for `predicate` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `predicate` the created "_.matches" style
     * callback returns `true` for elements that have the properties of the given
     * object, else `false`.
     *
     * @static
     * @memberOf _
     * @alias detect
     * @category Collection
     * @param {Array|Object|string} collection The collection to search.
     * @param {Function|Object|string} [predicate=_.identity] The function invoked
     *  per iteration. If a property name or object is provided it is used to
     *  create a "_.property" or "_.matches" style callback respectively.
     * @param {*} [thisArg] The `this` binding of `predicate`.
     * @returns {*} Returns the matched element, else `undefined`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'age': 36, 'active': true },
     *   { 'user': 'fred',    'age': 40, 'active': false },
     *   { 'user': 'pebbles', 'age': 1,  'active': true }
     * ];
     *
     * _.result(_.find(users, function(chr) { return chr.age < 40; }), 'user');
     * // => 'barney'
     *
     * // using the "_.matches" callback shorthand
     * _.result(_.find(users, { 'age': 1, 'active': true }), 'user');
     * // => 'pebbles'
     *
     * // using the "_.matchesProperty" callback shorthand
     * _.result(_.find(users, 'active', false), 'user');
     * // => 'fred'
     *
     * // using the "_.property" callback shorthand
     * _.result(_.find(users, 'active'), 'user');
     * // => 'barney'
     */
    function find(collection, predicate, thisArg) {
      if (isArray(collection)) {
        var index = findIndex(collection, predicate, thisArg);
        return index > -1 ? collection[index] : undefined;
      }
      predicate = getCallback(predicate, thisArg, 3);
      return baseFind(collection, predicate, baseEach);
    }

    /**
     * This method is like `_.find` except that it iterates over elements of
     * `collection` from right to left.
     *
     * @static
     * @memberOf _
     * @category Collection
     * @param {Array|Object|string} collection The collection to search.
     * @param {Function|Object|string} [predicate=_.identity] The function invoked
     *  per iteration. If a property name or object is provided it is used to
     *  create a "_.property" or "_.matches" style callback respectively.
     * @param {*} [thisArg] The `this` binding of `predicate`.
     * @returns {*} Returns the matched element, else `undefined`.
     * @example
     *
     * _.findLast([1, 2, 3, 4], function(n) { return n % 2 == 1; });
     * // => 3
     */
    function findLast(collection, predicate, thisArg) {
      predicate = getCallback(predicate, thisArg, 3);
      return baseFind(collection, predicate, baseEachRight);
    }

    /**
     * Performs a deep comparison between each element in `collection` and the
     * source object, returning the first element that has equivalent property
     * values.
     *
     * **Note:** This method supports comparing arrays, booleans, `Date` objects,
     * numbers, `Object` objects, regexes, and strings. Objects are compared by
     * their own, not inherited, enumerable properties. For comparing a single
     * own or inherited property value see `_.matchesProperty`.
     *
     * @static
     * @memberOf _
     * @category Collection
     * @param {Array|Object|string} collection The collection to search.
     * @param {Object} source The object of property values to match.
     * @returns {*} Returns the matched element, else `undefined`.
     * @example
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36, 'active': true },
     *   { 'user': 'fred',   'age': 40, 'active': false }
     * ];
     *
     * _.result(_.findWhere(users, { 'age': 36, 'active': true }), 'user');
     * // => 'barney'
     *
     * _.result(_.findWhere(users, { 'age': 40, 'active': false }), 'user');
     * // => 'fred'
     */
    function findWhere(collection, source) {
      return find(collection, baseMatches(source));
    }

    /**
     * Iterates over elements of `collection` invoking `iteratee` for each element.
     * The `iteratee` is bound to `thisArg` and invoked with three arguments;
     * (value, index|key, collection). Iterator functions may exit iteration early
     * by explicitly returning `false`.
     *
     * **Note:** As with other "Collections" methods, objects with a `length` property
     * are iterated like arrays. To avoid this behavior `_.forIn` or `_.forOwn`
     * may be used for object iteration.
     *
     * @static
     * @memberOf _
     * @alias each
     * @category Collection
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {*} [thisArg] The `this` binding of `iteratee`.
     * @returns {Array|Object|string} Returns `collection`.
     * @example
     *
     * _([1, 2, 3]).forEach(function(n) { console.log(n); }).value();
     * // => logs each value from left to right and returns the array
     *
     * _.forEach({ 'one': 1, 'two': 2, 'three': 3 }, function(n, key) { console.log(n, key); });
     * // => logs each value-key pair and returns the object (iteration order is not guaranteed)
     */
    function forEach(collection, iteratee, thisArg) {
      return (typeof iteratee == 'function' && typeof thisArg == 'undefined' && isArray(collection))
        ? arrayEach(collection, iteratee)
        : baseEach(collection, bindCallback(iteratee, thisArg, 3));
    }

    /**
     * This method is like `_.forEach` except that it iterates over elements of
     * `collection` from right to left.
     *
     * @static
     * @memberOf _
     * @alias eachRight
     * @category Collection
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {*} [thisArg] The `this` binding of `iteratee`.
     * @returns {Array|Object|string} Returns `collection`.
     * @example
     *
     * _([1, 2, 3]).forEachRight(function(n) { console.log(n); }).join(',');
     * // => logs each value from right to left and returns the array
     */
    function forEachRight(collection, iteratee, thisArg) {
      return (typeof iteratee == 'function' && typeof thisArg == 'undefined' && isArray(collection))
        ? arrayEachRight(collection, iteratee)
        : baseEachRight(collection, bindCallback(iteratee, thisArg, 3));
    }

    /**
     * Creates an object composed of keys generated from the results of running
     * each element of `collection` through `iteratee`. The corresponding value
     * of each key is an array of the elements responsible for generating the key.
     * The `iteratee` is bound to `thisArg` and invoked with three arguments;
     * (value, index|key, collection).
     *
     * If a property name is provided for `predicate` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `predicate` the created "_.matches" style
     * callback returns `true` for elements that have the properties of the given
     * object, else `false`.
     *
     * @static
     * @memberOf _
     * @category Collection
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|Object|string} [iteratee=_.identity] The function invoked
     *  per iteration. If a property name or object is provided it is used to
     *  create a "_.property" or "_.matches" style callback respectively.
     * @param {*} [thisArg] The `this` binding of `iteratee`.
     * @returns {Object} Returns the composed aggregate object.
     * @example
     *
     * _.groupBy([4.2, 6.1, 6.4], function(n) { return Math.floor(n); });
     * // => { '4': [4.2], '6': [6.1, 6.4] }
     *
     * _.groupBy([4.2, 6.1, 6.4], function(n) { return this.floor(n); }, Math);
     * // => { '4': [4.2], '6': [6.1, 6.4] }
     *
     * // using the "_.property" callback shorthand
     * _.groupBy(['one', 'two', 'three'], 'length');
     * // => { '3': ['one', 'two'], '5': ['three'] }
     */
    var groupBy = createAggregator(function(result, value, key) {
      if (hasOwnProperty.call(result, key)) {
        result[key].push(value);
      } else {
        result[key] = [value];
      }
    });

    /**
     * Creates an object composed of keys generated from the results of running
     * each element of `collection` through `iteratee`. The corresponding value
     * of each key is the last element responsible for generating the key. The
     * iteratee function is bound to `thisArg` and invoked with three arguments;
     * (value, index|key, collection).
     *
     * If a property name is provided for `predicate` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `predicate` the created "_.matches" style
     * callback returns `true` for elements that have the properties of the given
     * object, else `false`.
     *
     * @static
     * @memberOf _
     * @category Collection
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|Object|string} [iteratee=_.identity] The function invoked
     *  per iteration. If a property name or object is provided it is used to
     *  create a "_.property" or "_.matches" style callback respectively.
     * @param {*} [thisArg] The `this` binding of `iteratee`.
     * @returns {Object} Returns the composed aggregate object.
     * @example
     *
     * var keyData = [
     *   { 'dir': 'left', 'code': 97 },
     *   { 'dir': 'right', 'code': 100 }
     * ];
     *
     * _.indexBy(keyData, 'dir');
     * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }
     *
     * _.indexBy(keyData, function(object) { return String.fromCharCode(object.code); });
     * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }
     *
     * _.indexBy(keyData, function(object) { return this.fromCharCode(object.code); }, String);
     * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }
     */
    var indexBy = createAggregator(function(result, value, key) {
      result[key] = value;
    });

    /**
     * Invokes the method named by `methodName` on each element in `collection`,
     * returning an array of the results of each invoked method. Any additional
     * arguments are provided to each invoked method. If `methodName` is a function
     * it is invoked for, and `this` bound to, each element in `collection`.
     *
     * @static
     * @memberOf _
     * @category Collection
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|string} methodName The name of the method to invoke or
     *  the function invoked per iteration.
     * @param {...*} [args] The arguments to invoke the method with.
     * @returns {Array} Returns the array of results.
     * @example
     *
     * _.invoke([[5, 1, 7], [3, 2, 1]], 'sort');
     * // => [[1, 5, 7], [1, 2, 3]]
     *
     * _.invoke([123, 456], String.prototype.split, '');
     * // => [['1', '2', '3'], ['4', '5', '6']]
     */
    function invoke(collection, methodName) {
      return baseInvoke(collection, methodName, baseSlice(arguments, 2));
    }

    /**
     * Creates an array of values by running each element in `collection` through
     * `iteratee`. The `iteratee` is bound to `thisArg` and invoked with three
     * arguments; (value, index|key, collection).
     *
     * If a property name is provided for `predicate` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `predicate` the created "_.matches" style
     * callback returns `true` for elements that have the properties of the given
     * object, else `false`.
     *
     * Many lodash methods are guarded to work as interatees for methods like
     * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.
     *
     * The guarded methods are:
     * `ary`, `callback`, `chunk`, `clone`, `create`, `curry`, `curryRight`, `drop`,
     * `dropRight`, `fill`, `flatten`, `invert`, `max`, `min`, `parseInt`, `slice`,
     * `sortBy`, `take`, `takeRight`, `template`, `trim`, `trimLeft`, `trimRight`,
     * `trunc`, `random`, `range`, `sample`, `uniq`, and `words`
     *
     * @static
     * @memberOf _
     * @alias collect
     * @category Collection
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|Object|string} [iteratee=_.identity] The function invoked
     *  per iteration. If a property name or object is provided it is used to
     *  create a "_.property" or "_.matches" style callback respectively.
     * @param {*} [thisArg] The `this` binding of `iteratee`.
     * @returns {Array} Returns the new mapped array.
     * @example
     *
     * _.map([1, 2, 3], function(n) { return n * 3; });
     * // => [3, 6, 9]
     *
     * _.map({ 'one': 1, 'two': 2, 'three': 3 }, function(n) { return n * 3; });
     * // => [3, 6, 9] (iteration order is not guaranteed)
     *
     * var users = [
     *   { 'user': 'barney' },
     *   { 'user': 'fred' }
     * ];
     *
     * // using the "_.property" callback shorthand
     * _.map(users, 'user');
     * // => ['barney', 'fred']
     */
    function map(collection, iteratee, thisArg) {
      var func = isArray(collection) ? arrayMap : baseMap;
      iteratee = getCallback(iteratee, thisArg, 3);
      return func(collection, iteratee);
    }

    /**
     * Gets the maximum value of `collection`. If `collection` is empty or falsey
     * `-Infinity` is returned. If an iteratee function is provided it is invoked
     * for each value in `collection` to generate the criterion by which the value
     * is ranked. The `iteratee` is bound to `thisArg` and invoked with three
     * arguments; (value, index, collection).
     *
     * If a property name is provided for `predicate` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `predicate` the created "_.matches" style
     * callback returns `true` for elements that have the properties of the given
     * object, else `false`.
     *
     * @static
     * @memberOf _
     * @category Collection
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|Object|string} [iteratee] The function invoked per iteration.
     *  If a property name or object is provided it is used to create a "_.property"
     *  or "_.matches" style callback respectively.
     * @param {*} [thisArg] The `this` binding of `iteratee`.
     * @returns {*} Returns the maximum value.
     * @example
     *
     * _.max([4, 2, 8, 6]);
     * // => 8
     *
     * _.max([]);
     * // => -Infinity
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36 },
     *   { 'user': 'fred',   'age': 40 }
     * ];
     *
     * _.max(users, function(chr) { return chr.age; });
     * // => { 'user': 'fred', 'age': 40 };
     *
     * // using the "_.property" callback shorthand
     * _.max(users, 'age');
     * // => { 'user': 'fred', 'age': 40 };
     */
    var max = createExtremum(arrayMax);

    /**
     * Gets the minimum value of `collection`. If `collection` is empty or falsey
     * `Infinity` is returned. If an iteratee function is provided it is invoked
     * for each value in `collection` to generate the criterion by which the value
     * is ranked. The `iteratee` is bound to `thisArg` and invoked with three
     * arguments; (value, index, collection).
     *
     * If a property name is provided for `predicate` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `predicate` the created "_.matches" style
     * callback returns `true` for elements that have the properties of the given
     * object, else `false`.
     *
     * @static
     * @memberOf _
     * @category Collection
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|Object|string} [iteratee] The function invoked per iteration.
     *  If a property name or object is provided it is used to create a "_.property"
     *  or "_.matches" style callback respectively.
     * @param {*} [thisArg] The `this` binding of `iteratee`.
     * @returns {*} Returns the minimum value.
     * @example
     *
     * _.min([4, 2, 8, 6]);
     * // => 2
     *
     * _.min([]);
     * // => Infinity
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36 },
     *   { 'user': 'fred',   'age': 40 }
     * ];
     *
     * _.min(users, function(chr) { return chr.age; });
     * // => { 'user': 'barney', 'age': 36 };
     *
     * // using the "_.property" callback shorthand
     * _.min(users, 'age');
     * // => { 'user': 'barney', 'age': 36 };
     */
    var min = createExtremum(arrayMin, true);

    /**
     * Creates an array of elements split into two groups, the first of which
     * contains elements `predicate` returns truthy for, while the second of which
     * contains elements `predicate` returns falsey for. The predicate is bound
     * to `thisArg` and invoked with three arguments; (value, index|key, collection).
     *
     * If a property name is provided for `predicate` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `predicate` the created "_.matches" style
     * callback returns `true` for elements that have the properties of the given
     * object, else `false`.
     *
     * @static
     * @memberOf _
     * @category Collection
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|Object|string} [predicate=_.identity] The function invoked
     *  per iteration. If a property name or object is provided it is used to
     *  create a "_.property" or "_.matches" style callback respectively.
     * @param {*} [thisArg] The `this` binding of `predicate`.
     * @returns {Array} Returns the array of grouped elements.
     * @example
     *
     * _.partition([1, 2, 3], function(n) { return n % 2; });
     * // => [[1, 3], [2]]
     *
     * _.partition([1.2, 2.3, 3.4], function(n) { return this.floor(n) % 2; }, Math);
     * // => [[1, 3], [2]]
     *
     * var users = [
     *   { 'user': 'barney',  'age': 36, 'active': false },
     *   { 'user': 'fred',    'age': 40, 'active': true },
     *   { 'user': 'pebbles', 'age': 1,  'active': false }
     * ];
     *
     * var mapper = function(array) { return _.pluck(array, 'user'); };
     *
     * // using the "_.matches" callback shorthand
     * _.map(_.partition(users, { 'age': 1, 'active': false }), mapper);
     * // => [['pebbles'], ['barney', 'fred']]
     *
     * // using the "_.matchesProperty" callback shorthand
     * _.map(_.partition(users, 'active', false), mapper);
     * // => [['barney', 'pebbles'], ['fred']]
     *
     * // using the "_.property" callback shorthand
     * _.map(_.partition(users, 'active'), mapper);
     * // => [['fred'], ['barney', 'pebbles']]
     */
    var partition = createAggregator(function(result, value, key) {
      result[key ? 0 : 1].push(value);
    }, function() { return [[], []]; });

    /**
     * Gets the value of `key` from all elements in `collection`.
     *
     * @static
     * @memberOf _
     * @category Collection
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {string} key The key of the property to pluck.
     * @returns {Array} Returns the property values.
     * @example
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36 },
     *   { 'user': 'fred',   'age': 40 }
     * ];
     *
     * _.pluck(users, 'user');
     * // => ['barney', 'fred']
     *
     * var userIndex = _.indexBy(users, 'user');
     * _.pluck(userIndex, 'age');
     * // => [36, 40] (iteration order is not guaranteed)
     */
    function pluck(collection, key) {
      return map(collection, baseProperty(key));
    }

    /**
     * Reduces `collection` to a value which is the accumulated result of running
     * each element in `collection` through `iteratee`, where each successive
     * invocation is supplied the return value of the previous. If `accumulator`
     * is not provided the first element of `collection` is used as the initial
     * value. The `iteratee` is bound to `thisArg`and invoked with four arguments;
     * (accumulator, value, index|key, collection).
     *
     * Many lodash methods are guarded to work as interatees for methods like
     * `_.reduce`, `_.reduceRight`, and `_.transform`.
     *
     * The guarded methods are:
     * `assign`, `defaults`, `merge`, and `sortAllBy`
     *
     * @static
     * @memberOf _
     * @alias foldl, inject
     * @category Collection
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {*} [accumulator] The initial value.
     * @param {*} [thisArg] The `this` binding of `iteratee`.
     * @returns {*} Returns the accumulated value.
     * @example
     *
     * var sum = _.reduce([1, 2, 3], function(sum, n) { return sum + n; });
     * // => 6
     *
     * var mapped = _.reduce({ 'a': 1, 'b': 2, 'c': 3 }, function(result, n, key) {
     *   result[key] = n * 3;
     *   return result;
     * }, {});
     * // => { 'a': 3, 'b': 6, 'c': 9 } (iteration order is not guaranteed)
     */
    function reduce(collection, iteratee, accumulator, thisArg) {
      var func = isArray(collection) ? arrayReduce : baseReduce;
      return func(collection, getCallback(iteratee, thisArg, 4), accumulator, arguments.length < 3, baseEach);
    }

    /**
     * This method is like `_.reduce` except that it iterates over elements of
     * `collection` from right to left.
     *
     * @static
     * @memberOf _
     * @alias foldr
     * @category Collection
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {*} [accumulator] The initial value.
     * @param {*} [thisArg] The `this` binding of `iteratee`.
     * @returns {*} Returns the accumulated value.
     * @example
     *
     * var array = [[0, 1], [2, 3], [4, 5]];
     * _.reduceRight(array, function(flattened, other) { return flattened.concat(other); }, []);
     * // => [4, 5, 2, 3, 0, 1]
     */
    function reduceRight(collection, iteratee, accumulator, thisArg) {
      var func = isArray(collection) ? arrayReduceRight : baseReduce;
      return func(collection, getCallback(iteratee, thisArg, 4), accumulator, arguments.length < 3, baseEachRight);
    }

    /**
     * The opposite of `_.filter`; this method returns the elements of `collection`
     * that `predicate` does **not** return truthy for.
     *
     * If a property name is provided for `predicate` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `predicate` the created "_.matches" style
     * callback returns `true` for elements that have the properties of the given
     * object, else `false`.
     *
     * @static
     * @memberOf _
     * @category Collection
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|Object|string} [predicate=_.identity] The function invoked
     *  per iteration. If a property name or object is provided it is used to
     *  create a "_.property" or "_.matches" style callback respectively.
     * @param {*} [thisArg] The `this` binding of `predicate`.
     * @returns {Array} Returns the new filtered array.
     * @example
     *
     * var odds = _.reject([1, 2, 3, 4], function(n) { return n % 2 == 0; });
     * // => [1, 3]
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36, 'active': false },
     *   { 'user': 'fred',   'age': 40, 'active': true }
     * ];
     *
     * // using the "_.matches" callback shorthand
     * _.pluck(_.reject(users, { 'age': 40, 'active': true }), 'user');
     * // => ['barney']
     *
     * // using the "_.matchesProperty" callback shorthand
     * _.pluck(_.reject(users, 'active', false), 'user');
     * // => ['fred']
     *
     * // using the "_.property" callback shorthand
     * _.pluck(_.reject(users, 'active'), 'user');
     * // => ['barney']
     */
    function reject(collection, predicate, thisArg) {
      var func = isArray(collection) ? arrayFilter : baseFilter;
      predicate = getCallback(predicate, thisArg, 3);
      return func(collection, function(value, index, collection) {
        return !predicate(value, index, collection);
      });
    }

    /**
     * Gets a random element or `n` random elements from a collection.
     *
     * @static
     * @memberOf _
     * @category Collection
     * @param {Array|Object|string} collection The collection to sample.
     * @param {number} [n] The number of elements to sample.
     * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
     * @returns {*} Returns the random sample(s).
     * @example
     *
     * _.sample([1, 2, 3, 4]);
     * // => 2
     *
     * _.sample([1, 2, 3, 4], 2);
     * // => [3, 1]
     */
    function sample(collection, n, guard) {
      if (guard ? isIterateeCall(collection, n, guard) : n == null) {
        collection = toIterable(collection);
        var length = collection.length;
        return length > 0 ? collection[baseRandom(0, length - 1)] : undefined;
      }
      var result = shuffle(collection);
      result.length = nativeMin(n < 0 ? 0 : (+n || 0), result.length);
      return result;
    }

    /**
     * Creates an array of shuffled values, using a version of the Fisher-Yates
     * shuffle. See [Wikipedia](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle)
     * for more details.
     *
     * @static
     * @memberOf _
     * @category Collection
     * @param {Array|Object|string} collection The collection to shuffle.
     * @returns {Array} Returns the new shuffled array.
     * @example
     *
     * _.shuffle([1, 2, 3, 4]);
     * // => [4, 1, 3, 2]
     */
    function shuffle(collection) {
      collection = toIterable(collection);

      var index = -1,
          length = collection.length,
          result = Array(length);

      while (++index < length) {
        var rand = baseRandom(0, index);
        if (index != rand) {
          result[index] = result[rand];
        }
        result[rand] = collection[index];
      }
      return result;
    }

    /**
     * Gets the size of `collection` by returning `collection.length` for
     * array-like values or the number of own enumerable properties for objects.
     *
     * @static
     * @memberOf _
     * @category Collection
     * @param {Array|Object|string} collection The collection to inspect.
     * @returns {number} Returns the size of `collection`.
     * @example
     *
     * _.size([1, 2]);
     * // => 2
     *
     * _.size({ 'one': 1, 'two': 2, 'three': 3 });
     * // => 3
     *
     * _.size('pebbles');
     * // => 7
     */
    function size(collection) {
      var length = collection ? collection.length : 0;
      return isLength(length) ? length : keys(collection).length;
    }

    /**
     * Checks if `predicate` returns truthy for **any** element of `collection`.
     * The function returns as soon as it finds a passing value and does not iterate
     * over the entire collection. The predicate is bound to `thisArg` and invoked
     * with three arguments; (value, index|key, collection).
     *
     * If a property name is provided for `predicate` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `predicate` the created "_.matches" style
     * callback returns `true` for elements that have the properties of the given
     * object, else `false`.
     *
     * @static
     * @memberOf _
     * @alias any
     * @category Collection
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Function|Object|string} [predicate=_.identity] The function invoked
     *  per iteration. If a property name or object is provided it is used to
     *  create a "_.property" or "_.matches" style callback respectively.
     * @param {*} [thisArg] The `this` binding of `predicate`.
     * @returns {boolean} Returns `true` if any element passes the predicate check,
     *  else `false`.
     * @example
     *
     * _.some([null, 0, 'yes', false], Boolean);
     * // => true
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36, 'active': false },
     *   { 'user': 'fred',   'age': 40, 'active': true }
     * ];
     *
     * // using the "_.matches" callback shorthand
     * _.some(users, { 'age': 1, 'active': true });
     * // => false
     *
     * // using the "_.matchesProperty" callback shorthand
     * _.some(users, 'active', false);
     * // => true
     *
     * // using the "_.property" callback shorthand
     * _.some(users, 'active');
     * // => true
     */
    function some(collection, predicate, thisArg) {
      var func = isArray(collection) ? arraySome : baseSome;
      if (typeof predicate != 'function' || typeof thisArg != 'undefined') {
        predicate = getCallback(predicate, thisArg, 3);
      }
      return func(collection, predicate);
    }

    /**
     * Creates an array of elements, sorted in ascending order by the results of
     * running each element in a collection through `iteratee`. This method performs
     * a stable sort, that is, it preserves the original sort order of equal elements.
     * The `iteratee` is bound to `thisArg` and invoked with three arguments;
     * (value, index|key, collection).
     *
     * If a property name is provided for `predicate` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `predicate` the created "_.matches" style
     * callback returns `true` for elements that have the properties of the given
     * object, else `false`.
     *
     * @static
     * @memberOf _
     * @category Collection
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {Array|Function|Object|string} [iteratee=_.identity] The function
     *  invoked per iteration. If a property name or an object is provided it is
     *  used to create a "_.property" or "_.matches" style callback respectively.
     * @param {*} [thisArg] The `this` binding of `iteratee`.
     * @returns {Array} Returns the new sorted array.
     * @example
     *
     * _.sortBy([1, 2, 3], function(n) { return Math.sin(n); });
     * // => [3, 1, 2]
     *
     * _.sortBy([1, 2, 3], function(n) { return this.sin(n); }, Math);
     * // => [3, 1, 2]
     *
     * var users = [
     *   { 'user': 'fred' },
     *   { 'user': 'pebbles' },
     *   { 'user': 'barney' }
     * ];
     *
     * // using the "_.property" callback shorthand
     * _.pluck(_.sortBy(users, 'user'), 'user');
     * // => ['barney', 'fred', 'pebbles']
     */
    function sortBy(collection, iteratee, thisArg) {
      var index = -1,
          length = collection ? collection.length : 0,
          result = isLength(length) ? Array(length) : [];

      if (thisArg && isIterateeCall(collection, iteratee, thisArg)) {
        iteratee = null;
      }
      iteratee = getCallback(iteratee, thisArg, 3);
      baseEach(collection, function(value, key, collection) {
        result[++index] = { 'criteria': iteratee(value, key, collection), 'index': index, 'value': value };
      });
      return baseSortBy(result, compareAscending);
    }

    /**
     * This method is like `_.sortBy` except that it sorts by property names
     * instead of an iteratee function.
     *
     * @static
     * @memberOf _
     * @category Collection
     * @param {Array|Object|string} collection The collection to iterate over.
     * @param {...(string|string[])} props The property names to sort by,
     *  specified as individual property names or arrays of property names.
     * @returns {Array} Returns the new sorted array.
     * @example
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36 },
     *   { 'user': 'fred',   'age': 40 },
     *   { 'user': 'barney', 'age': 26 },
     *   { 'user': 'fred',   'age': 30 }
     * ];
     *
     * _.map(_.sortByAll(users, ['user', 'age']), _.values);
     * // => [['barney', 26], ['barney', 36], ['fred', 30], ['fred', 40]]
     */
    function sortByAll(collection) {
      var args = arguments;
      if (args.length > 3 && isIterateeCall(args[1], args[2], args[3])) {
        args = [collection, args[1]];
      }
      var index = -1,
          length = collection ? collection.length : 0,
          props = baseFlatten(args, false, false, 1),
          result = isLength(length) ? Array(length) : [];

      baseEach(collection, function(value) {
        var length = props.length,
            criteria = Array(length);

        while (length--) {
          criteria[length] = value == null ? undefined : value[props[length]];
        }
        result[++index] = { 'criteria': criteria, 'index': index, 'value': value };
      });
      return baseSortBy(result, compareMultipleAscending);
    }

    /**
     * Performs a deep comparison between each element in `collection` and the
     * source object, returning an array of all elements that have equivalent
     * property values.
     *
     * **Note:** This method supports comparing arrays, booleans, `Date` objects,
     * numbers, `Object` objects, regexes, and strings. Objects are compared by
     * their own, not inherited, enumerable properties. For comparing a single
     * own or inherited property value see `_.matchesProperty`.
     *
     * @static
     * @memberOf _
     * @category Collection
     * @param {Array|Object|string} collection The collection to search.
     * @param {Object} source The object of property values to match.
     * @returns {Array} Returns the new filtered array.
     * @example
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36, 'active': false, 'pets': ['hoppy'] },
     *   { 'user': 'fred',   'age': 40, 'active': true, 'pets': ['baby puss', 'dino'] }
     * ];
     *
     * _.pluck(_.where(users, { 'age': 36, 'active': false }), 'user');
     * // => ['barney']
     *
     * _.pluck(_.where(users, { 'pets': ['dino'] }), 'user');
     * // => ['fred']
     */
    function where(collection, source) {
      return filter(collection, baseMatches(source));
    }

    /*------------------------------------------------------------------------*/

    /**
     * Gets the number of milliseconds that have elapsed since the Unix epoch
     * (1 January 1970 00:00:00 UTC).
     *
     * @static
     * @memberOf _
     * @category Date
     * @example
     *
     * _.defer(function(stamp) { console.log(_.now() - stamp); }, _.now());
     * // => logs the number of milliseconds it took for the deferred function to be invoked
     */
    var now = nativeNow || function() {
      return new Date().getTime();
    };

    /*------------------------------------------------------------------------*/

    /**
     * The opposite of `_.before`; this method creates a function that invokes
     * `func` once it is called `n` or more times.
     *
     * @static
     * @memberOf _
     * @category Function
     * @param {number} n The number of calls before `func` is invoked.
     * @param {Function} func The function to restrict.
     * @returns {Function} Returns the new restricted function.
     * @example
     *
     * var saves = ['profile', 'settings'];
     *
     * var done = _.after(saves.length, function() {
     *   console.log('done saving!');
     * });
     *
     * _.forEach(saves, function(type) {
     *   asyncSave({ 'type': type, 'complete': done });
     * });
     * // => logs 'done saving!' after the two async saves have completed
     */
    function after(n, func) {
      if (typeof func != 'function') {
        if (typeof n == 'function') {
          var temp = n;
          n = func;
          func = temp;
        } else {
          throw new TypeError(FUNC_ERROR_TEXT);
        }
      }
      n = nativeIsFinite(n = +n) ? n : 0;
      return function() {
        if (--n < 1) {
          return func.apply(this, arguments);
        }
      };
    }

    /**
     * Creates a function that accepts up to `n` arguments ignoring any
     * additional arguments.
     *
     * @static
     * @memberOf _
     * @category Function
     * @param {Function} func The function to cap arguments for.
     * @param {number} [n=func.length] The arity cap.
     * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
     * @returns {Function} Returns the new function.
     * @example
     *
     * _.map(['6', '8', '10'], _.ary(parseInt, 1));
     * // => [6, 8, 10]
     */
    function ary(func, n, guard) {
      if (guard && isIterateeCall(func, n, guard)) {
        n = null;
      }
      n = (func && n == null) ? func.length : nativeMax(+n || 0, 0);
      return createWrapper(func, ARY_FLAG, null, null, null, null, n);
    }

    /**
     * Creates a function that invokes `func`, with the `this` binding and arguments
     * of the created function, while it is called less than `n` times. Subsequent
     * calls to the created function return the result of the last `func` invocation.
     *
     * @static
     * @memberOf _
     * @category Function
     * @param {number} n The number of calls at which `func` is no longer invoked.
     * @param {Function} func The function to restrict.
     * @returns {Function} Returns the new restricted function.
     * @example
     *
     * jQuery('#add').on('click', _.before(5, addContactToList));
     * // => allows adding up to 4 contacts to the list
     */
    function before(n, func) {
      var result;
      if (typeof func != 'function') {
        if (typeof n == 'function') {
          var temp = n;
          n = func;
          func = temp;
        } else {
          throw new TypeError(FUNC_ERROR_TEXT);
        }
      }
      return function() {
        if (--n > 0) {
          result = func.apply(this, arguments);
        } else {
          func = null;
        }
        return result;
      };
    }

    /**
     * Creates a function that invokes `func` with the `this` binding of `thisArg`
     * and prepends any additional `_.bind` arguments to those provided to the
     * bound function.
     *
     * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds,
     * may be used as a placeholder for partially applied arguments.
     *
     * **Note:** Unlike native `Function#bind` this method does not set the `length`
     * property of bound functions.
     *
     * @static
     * @memberOf _
     * @category Function
     * @param {Function} func The function to bind.
     * @param {*} thisArg The `this` binding of `func`.
     * @param {...*} [args] The arguments to be partially applied.
     * @returns {Function} Returns the new bound function.
     * @example
     *
     * var greet = function(greeting, punctuation) {
     *   return greeting + ' ' + this.user + punctuation;
     * };
     *
     * var object = { 'user': 'fred' };
     *
     * var bound = _.bind(greet, object, 'hi');
     * bound('!');
     * // => 'hi fred!'
     *
     * // using placeholders
     * var bound = _.bind(greet, object, _, '!');
     * bound('hi');
     * // => 'hi fred!'
     */
    function bind(func, thisArg) {
      var bitmask = BIND_FLAG;
      if (arguments.length > 2) {
        var partials = baseSlice(arguments, 2),
            holders = replaceHolders(partials, bind.placeholder);

        bitmask |= PARTIAL_FLAG;
      }
      return createWrapper(func, bitmask, thisArg, partials, holders);
    }

    /**
     * Binds methods of an object to the object itself, overwriting the existing
     * method. Method names may be specified as individual arguments or as arrays
     * of method names. If no method names are provided all enumerable function
     * properties, own and inherited, of `object` are bound.
     *
     * **Note:** This method does not set the `length` property of bound functions.
     *
     * @static
     * @memberOf _
     * @category Function
     * @param {Object} object The object to bind and assign the bound methods to.
     * @param {...(string|string[])} [methodNames] The object method names to bind,
     *  specified as individual method names or arrays of method names.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var view = {
     *   'label': 'docs',
     *   'onClick': function() { console.log('clicked ' + this.label); }
     * };
     *
     * _.bindAll(view);
     * jQuery('#docs').on('click', view.onClick);
     * // => logs 'clicked docs' when the element is clicked
     */
    function bindAll(object) {
      return baseBindAll(object,
        arguments.length > 1
          ? baseFlatten(arguments, false, false, 1)
          : functions(object)
      );
    }

    /**
     * Creates a function that invokes the method at `object[key]` and prepends
     * any additional `_.bindKey` arguments to those provided to the bound function.
     *
     * This method differs from `_.bind` by allowing bound functions to reference
     * methods that may be redefined or don't yet exist.
     * See [Peter Michaux's article](http://michaux.ca/articles/lazy-function-definition-pattern)
     * for more details.
     *
     * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic
     * builds, may be used as a placeholder for partially applied arguments.
     *
     * @static
     * @memberOf _
     * @category Function
     * @param {Object} object The object the method belongs to.
     * @param {string} key The key of the method.
     * @param {...*} [args] The arguments to be partially applied.
     * @returns {Function} Returns the new bound function.
     * @example
     *
     * var object = {
     *   'user': 'fred',
     *   'greet': function(greeting, punctuation) {
     *     return greeting + ' ' + this.user + punctuation;
     *   }
     * };
     *
     * var bound = _.bindKey(object, 'greet', 'hi');
     * bound('!');
     * // => 'hi fred!'
     *
     * object.greet = function(greeting, punctuation) {
     *   return greeting + 'ya ' + this.user + punctuation;
     * };
     *
     * bound('!');
     * // => 'hiya fred!'
     *
     * // using placeholders
     * var bound = _.bindKey(object, 'greet', _, '!');
     * bound('hi');
     * // => 'hiya fred!'
     */
    function bindKey(object, key) {
      var bitmask = BIND_FLAG | BIND_KEY_FLAG;
      if (arguments.length > 2) {
        var partials = baseSlice(arguments, 2),
            holders = replaceHolders(partials, bindKey.placeholder);

        bitmask |= PARTIAL_FLAG;
      }
      return createWrapper(key, bitmask, object, partials, holders);
    }

    /**
     * Creates a function that accepts one or more arguments of `func` that when
     * called either invokes `func` returning its result, if all `func` arguments
     * have been provided, or returns a function that accepts one or more of the
     * remaining `func` arguments, and so on. The arity of `func` may be specified
     * if `func.length` is not sufficient.
     *
     * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds,
     * may be used as a placeholder for provided arguments.
     *
     * **Note:** This method does not set the `length` property of curried functions.
     *
     * @static
     * @memberOf _
     * @category Function
     * @param {Function} func The function to curry.
     * @param {number} [arity=func.length] The arity of `func`.
     * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
     * @returns {Function} Returns the new curried function.
     * @example
     *
     * var abc = function(a, b, c) {
     *   return [a, b, c];
     * };
     *
     * var curried = _.curry(abc);
     *
     * curried(1)(2)(3);
     * // => [1, 2, 3]
     *
     * curried(1, 2)(3);
     * // => [1, 2, 3]
     *
     * curried(1, 2, 3);
     * // => [1, 2, 3]
     *
     * // using placeholders
     * curried(1)(_, 3)(2);
     * // => [1, 2, 3]
     */
    function curry(func, arity, guard) {
      if (guard && isIterateeCall(func, arity, guard)) {
        arity = null;
      }
      var result = createWrapper(func, CURRY_FLAG, null, null, null, null, null, arity);
      result.placeholder = curry.placeholder;
      return result;
    }

    /**
     * This method is like `_.curry` except that arguments are applied to `func`
     * in the manner of `_.partialRight` instead of `_.partial`.
     *
     * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic
     * builds, may be used as a placeholder for provided arguments.
     *
     * **Note:** This method does not set the `length` property of curried functions.
     *
     * @static
     * @memberOf _
     * @category Function
     * @param {Function} func The function to curry.
     * @param {number} [arity=func.length] The arity of `func`.
     * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
     * @returns {Function} Returns the new curried function.
     * @example
     *
     * var abc = function(a, b, c) {
     *   return [a, b, c];
     * };
     *
     * var curried = _.curryRight(abc);
     *
     * curried(3)(2)(1);
     * // => [1, 2, 3]
     *
     * curried(2, 3)(1);
     * // => [1, 2, 3]
     *
     * curried(1, 2, 3);
     * // => [1, 2, 3]
     *
     * // using placeholders
     * curried(3)(1, _)(2);
     * // => [1, 2, 3]
     */
    function curryRight(func, arity, guard) {
      if (guard && isIterateeCall(func, arity, guard)) {
        arity = null;
      }
      var result = createWrapper(func, CURRY_RIGHT_FLAG, null, null, null, null, null, arity);
      result.placeholder = curryRight.placeholder;
      return result;
    }

    /**
     * Creates a function that delays invoking `func` until after `wait` milliseconds
     * have elapsed since the last time it was invoked. The created function comes
     * with a `cancel` method to cancel delayed invocations. Provide an options
     * object to indicate that `func` should be invoked on the leading and/or
     * trailing edge of the `wait` timeout. Subsequent calls to the debounced
     * function return the result of the last `func` invocation.
     *
     * **Note:** If `leading` and `trailing` options are `true`, `func` is invoked
     * on the trailing edge of the timeout only if the the debounced function is
     * invoked more than once during the `wait` timeout.
     *
     * See [David Corbacho's article](http://drupalmotion.com/article/debounce-and-throttle-visual-explanation)
     * for details over the differences between `_.debounce` and `_.throttle`.
     *
     * @static
     * @memberOf _
     * @category Function
     * @param {Function} func The function to debounce.
     * @param {number} wait The number of milliseconds to delay.
     * @param {Object} [options] The options object.
     * @param {boolean} [options.leading=false] Specify invoking on the leading
     *  edge of the timeout.
     * @param {number} [options.maxWait] The maximum time `func` is allowed to be
     *  delayed before it is invoked.
     * @param {boolean} [options.trailing=true] Specify invoking on the trailing
     *  edge of the timeout.
     * @returns {Function} Returns the new debounced function.
     * @example
     *
     * // avoid costly calculations while the window size is in flux
     * jQuery(window).on('resize', _.debounce(calculateLayout, 150));
     *
     * // invoke `sendMail` when the click event is fired, debouncing subsequent calls
     * jQuery('#postbox').on('click', _.debounce(sendMail, 300, {
     *   'leading': true,
     *   'trailing': false
     * }));
     *
     * // ensure `batchLog` is invoked once after 1 second of debounced calls
     * var source = new EventSource('/stream');
     * jQuery(source).on('message', _.debounce(batchLog, 250, {
     *   'maxWait': 1000
     * }));
     *
     * // cancel a debounced call
     * var todoChanges = _.debounce(batchLog, 1000);
     * Object.observe(models.todo, todoChanges);
     *
     * Object.observe(models, function(changes) {
     *   if (_.find(changes, { 'user': 'todo', 'type': 'delete'})) {
     *     todoChanges.cancel();
     *   }
     * }, ['delete']);
     *
     * // ...at some point `models.todo` is changed
     * models.todo.completed = true;
     *
     * // ...before 1 second has passed `models.todo` is deleted
     * // which cancels the debounced `todoChanges` call
     * delete models.todo;
     */
    function debounce(func, wait, options) {
      var args,
          maxTimeoutId,
          result,
          stamp,
          thisArg,
          timeoutId,
          trailingCall,
          lastCalled = 0,
          maxWait = false,
          trailing = true;

      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      wait = wait < 0 ? 0 : wait;
      if (options === true) {
        var leading = true;
        trailing = false;
      } else if (isObject(options)) {
        leading = options.leading;
        maxWait = 'maxWait' in options && nativeMax(+options.maxWait || 0, wait);
        trailing = 'trailing' in options ? options.trailing : trailing;
      }

      function cancel() {
        if (timeoutId) {
          clearTimeout(timeoutId);
        }
        if (maxTimeoutId) {
          clearTimeout(maxTimeoutId);
        }
        maxTimeoutId = timeoutId = trailingCall = undefined;
      }

      function delayed() {
        var remaining = wait - (now() - stamp);
        if (remaining <= 0 || remaining > wait) {
          if (maxTimeoutId) {
            clearTimeout(maxTimeoutId);
          }
          var isCalled = trailingCall;
          maxTimeoutId = timeoutId = trailingCall = undefined;
          if (isCalled) {
            lastCalled = now();
            result = func.apply(thisArg, args);
            if (!timeoutId && !maxTimeoutId) {
              args = thisArg = null;
            }
          }
        } else {
          timeoutId = setTimeout(delayed, remaining);
        }
      }

      function maxDelayed() {
        if (timeoutId) {
          clearTimeout(timeoutId);
        }
        maxTimeoutId = timeoutId = trailingCall = undefined;
        if (trailing || (maxWait !== wait)) {
          lastCalled = now();
          result = func.apply(thisArg, args);
          if (!timeoutId && !maxTimeoutId) {
            args = thisArg = null;
          }
        }
      }

      function debounced() {
        args = arguments;
        stamp = now();
        thisArg = this;
        trailingCall = trailing && (timeoutId || !leading);

        if (maxWait === false) {
          var leadingCall = leading && !timeoutId;
        } else {
          if (!maxTimeoutId && !leading) {
            lastCalled = stamp;
          }
          var remaining = maxWait - (stamp - lastCalled),
              isCalled = remaining <= 0 || remaining > maxWait;

          if (isCalled) {
            if (maxTimeoutId) {
              maxTimeoutId = clearTimeout(maxTimeoutId);
            }
            lastCalled = stamp;
            result = func.apply(thisArg, args);
          }
          else if (!maxTimeoutId) {
            maxTimeoutId = setTimeout(maxDelayed, remaining);
          }
        }
        if (isCalled && timeoutId) {
          timeoutId = clearTimeout(timeoutId);
        }
        else if (!timeoutId && wait !== maxWait) {
          timeoutId = setTimeout(delayed, wait);
        }
        if (leadingCall) {
          isCalled = true;
          result = func.apply(thisArg, args);
        }
        if (isCalled && !timeoutId && !maxTimeoutId) {
          args = thisArg = null;
        }
        return result;
      }
      debounced.cancel = cancel;
      return debounced;
    }

    /**
     * Defers invoking the `func` until the current call stack has cleared. Any
     * additional arguments are provided to `func` when it is invoked.
     *
     * @static
     * @memberOf _
     * @category Function
     * @param {Function} func The function to defer.
     * @param {...*} [args] The arguments to invoke the function with.
     * @returns {number} Returns the timer id.
     * @example
     *
     * _.defer(function(text) { console.log(text); }, 'deferred');
     * // logs 'deferred' after one or more milliseconds
     */
    function defer(func) {
      return baseDelay(func, 1, arguments, 1);
    }

    /**
     * Invokes `func` after `wait` milliseconds. Any additional arguments are
     * provided to `func` when it is invoked.
     *
     * @static
     * @memberOf _
     * @category Function
     * @param {Function} func The function to delay.
     * @param {number} wait The number of milliseconds to delay invocation.
     * @param {...*} [args] The arguments to invoke the function with.
     * @returns {number} Returns the timer id.
     * @example
     *
     * _.delay(function(text) { console.log(text); }, 1000, 'later');
     * // => logs 'later' after one second
     */
    function delay(func, wait) {
      return baseDelay(func, wait, arguments, 2);
    }

    /**
     * Creates a function that returns the result of invoking the provided
     * functions with the `this` binding of the created function, where each
     * successive invocation is supplied the return value of the previous.
     *
     * @static
     * @memberOf _
     * @category Function
     * @param {...Function} [funcs] Functions to invoke.
     * @returns {Function} Returns the new function.
     * @example
     *
     * function add(x, y) {
     *   return x + y;
     * }
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * var addSquare = _.flow(add, square);
     * addSquare(1, 2);
     * // => 9
     */
    function flow() {
      var funcs = arguments,
          length = funcs.length;

      if (!length) {
        return function() { return arguments[0]; };
      }
      if (!arrayEvery(funcs, isFunction)) {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      return function() {
        var index = 0,
            result = funcs[index].apply(this, arguments);

        while (++index < length) {
          result = funcs[index].call(this, result);
        }
        return result;
      };
    }

    /**
     * This method is like `_.flow` except that it creates a function that
     * invokes the provided functions from right to left.
     *
     * @static
     * @memberOf _
     * @alias backflow, compose
     * @category Function
     * @param {...Function} [funcs] Functions to invoke.
     * @returns {Function} Returns the new function.
     * @example
     *
     * function add(x, y) {
     *   return x + y;
     * }
     *
     * function square(n) {
     *   return n * n;
     * }
     *
     * var addSquare = _.flowRight(square, add);
     * addSquare(1, 2);
     * // => 9
     */
    function flowRight() {
      var funcs = arguments,
          fromIndex = funcs.length - 1;

      if (fromIndex < 0) {
        return function() { return arguments[0]; };
      }
      if (!arrayEvery(funcs, isFunction)) {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      return function() {
        var index = fromIndex,
            result = funcs[index].apply(this, arguments);

        while (index--) {
          result = funcs[index].call(this, result);
        }
        return result;
      };
    }

    /**
     * Creates a function that memoizes the result of `func`. If `resolver` is
     * provided it determines the cache key for storing the result based on the
     * arguments provided to the memoized function. By default, the first argument
     * provided to the memoized function is coerced to a string and used as the
     * cache key. The `func` is invoked with the `this` binding of the memoized
     * function.
     *
     * **Note:** The cache is exposed as the `cache` property on the memoized
     * function. Its creation may be customized by replacing the `_.memoize.Cache`
     * constructor with one whose instances implement the ES `Map` method interface
     * of `get`, `has`, and `set`. See the
     * [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-properties-of-the-map-prototype-object)
     * for more details.
     *
     * @static
     * @memberOf _
     * @category Function
     * @param {Function} func The function to have its output memoized.
     * @param {Function} [resolver] The function to resolve the cache key.
     * @returns {Function} Returns the new memoizing function.
     * @example
     *
     * var upperCase = _.memoize(function(string) {
     *   return string.toUpperCase();
     * });
     *
     * upperCase('fred');
     * // => 'FRED'
     *
     * // modifying the result cache
     * upperCase.cache.set('fred', 'BARNEY');
     * upperCase('fred');
     * // => 'BARNEY'
     *
     * // replacing `_.memoize.Cache`
     * var object = { 'user': 'fred' };
     * var other = { 'user': 'barney' };
     * var identity = _.memoize(_.identity);
     *
     * identity(object);
     * // => { 'user': 'fred' }
     * identity(other);
     * // => { 'user': 'fred' }
     *
     * _.memoize.Cache = WeakMap;
     * var identity = _.memoize(_.identity);
     *
     * identity(object);
     * // => { 'user': 'fred' }
     * identity(other);
     * // => { 'user': 'barney' }
     */
    function memoize(func, resolver) {
      if (typeof func != 'function' || (resolver && typeof resolver != 'function')) {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      var memoized = function() {
        var cache = memoized.cache,
            key = resolver ? resolver.apply(this, arguments) : arguments[0];

        if (cache.has(key)) {
          return cache.get(key);
        }
        var result = func.apply(this, arguments);
        cache.set(key, result);
        return result;
      };
      memoized.cache = new memoize.Cache;
      return memoized;
    }

    /**
     * Creates a function that negates the result of the predicate `func`. The
     * `func` predicate is invoked with the `this` binding and arguments of the
     * created function.
     *
     * @static
     * @memberOf _
     * @category Function
     * @param {Function} predicate The predicate to negate.
     * @returns {Function} Returns the new function.
     * @example
     *
     * function isEven(n) {
     *   return n % 2 == 0;
     * }
     *
     * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven));
     * // => [1, 3, 5]
     */
    function negate(predicate) {
      if (typeof predicate != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      return function() {
        return !predicate.apply(this, arguments);
      };
    }

    /**
     * Creates a function that is restricted to invoking `func` once. Repeat calls
     * to the function return the value of the first call. The `func` is invoked
     * with the `this` binding of the created function.
     *
     * @static
     * @memberOf _
     * @category Function
     * @param {Function} func The function to restrict.
     * @returns {Function} Returns the new restricted function.
     * @example
     *
     * var initialize = _.once(createApplication);
     * initialize();
     * initialize();
     * // `initialize` invokes `createApplication` once
     */
    function once(func) {
      return before(func, 2);
    }

    /**
     * Creates a function that invokes `func` with `partial` arguments prepended
     * to those provided to the new function. This method is like `_.bind` except
     * it does **not** alter the `this` binding.
     *
     * The `_.partial.placeholder` value, which defaults to `_` in monolithic
     * builds, may be used as a placeholder for partially applied arguments.
     *
     * **Note:** This method does not set the `length` property of partially
     * applied functions.
     *
     * @static
     * @memberOf _
     * @category Function
     * @param {Function} func The function to partially apply arguments to.
     * @param {...*} [args] The arguments to be partially applied.
     * @returns {Function} Returns the new partially applied function.
     * @example
     *
     * var greet = function(greeting, name) {
     *   return greeting + ' ' + name;
     * };
     *
     * var sayHelloTo = _.partial(greet, 'hello');
     * sayHelloTo('fred');
     * // => 'hello fred'
     *
     * // using placeholders
     * var greetFred = _.partial(greet, _, 'fred');
     * greetFred('hi');
     * // => 'hi fred'
     */
    function partial(func) {
      var partials = baseSlice(arguments, 1),
          holders = replaceHolders(partials, partial.placeholder);

      return createWrapper(func, PARTIAL_FLAG, null, partials, holders);
    }

    /**
     * This method is like `_.partial` except that partially applied arguments
     * are appended to those provided to the new function.
     *
     * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic
     * builds, may be used as a placeholder for partially applied arguments.
     *
     * **Note:** This method does not set the `length` property of partially
     * applied functions.
     *
     * @static
     * @memberOf _
     * @category Function
     * @param {Function} func The function to partially apply arguments to.
     * @param {...*} [args] The arguments to be partially applied.
     * @returns {Function} Returns the new partially applied function.
     * @example
     *
     * var greet = function(greeting, name) {
     *   return greeting + ' ' + name;
     * };
     *
     * var greetFred = _.partialRight(greet, 'fred');
     * greetFred('hi');
     * // => 'hi fred'
     *
     * // using placeholders
     * var sayHelloTo = _.partialRight(greet, 'hello', _);
     * sayHelloTo('fred');
     * // => 'hello fred'
     */
    function partialRight(func) {
      var partials = baseSlice(arguments, 1),
          holders = replaceHolders(partials, partialRight.placeholder);

      return createWrapper(func, PARTIAL_RIGHT_FLAG, null, partials, holders);
    }

    /**
     * Creates a function that invokes `func` with arguments arranged according
     * to the specified indexes where the argument value at the first index is
     * provided as the first argument, the argument value at the second index is
     * provided as the second argument, and so on.
     *
     * @static
     * @memberOf _
     * @category Function
     * @param {Function} func The function to rearrange arguments for.
     * @param {...(number|number[])} indexes The arranged argument indexes,
     *  specified as individual indexes or arrays of indexes.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var rearged = _.rearg(function(a, b, c) {
     *   return [a, b, c];
     * }, 2, 0, 1);
     *
     * rearged('b', 'c', 'a')
     * // => ['a', 'b', 'c']
     *
     * var map = _.rearg(_.map, [1, 0]);
     * map(function(n) { return n * 3; }, [1, 2, 3]);
     * // => [3, 6, 9]
     */
    function rearg(func) {
      var indexes = baseFlatten(arguments, false, false, 1);
      return createWrapper(func, REARG_FLAG, null, null, null, indexes);
    }

    /**
     * Creates a function that invokes `func` with the `this` binding of the
     * created function and the array of arguments provided to the created
     * function much like [Function#apply](http://es5.github.io/#x15.3.4.3).
     *
     * @static
     * @memberOf _
     * @category Function
     * @param {Function} func The function to spread arguments over.
     * @returns {*} Returns the new function.
     * @example
     *
     * var spread = _.spread(function(who, what) {
     *   return who + ' says ' + what;
     * });
     *
     * spread(['Fred', 'hello']);
     * // => 'Fred says hello'
     *
     * // with a Promise
     * var numbers = Promise.all([
     *   Promise.resolve(40),
     *   Promise.resolve(36)
     * ]);
     *
     * var add = function(x, y) {
     *   return x + y;
     * };
     *
     * numbers.then(_.spread(add));
     * // => a Promise of 76
     */
    function spread(func) {
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      return function(array) {
        return func.apply(this, array);
      };
    }

    /**
     * Creates a function that only invokes `func` at most once per every `wait`
     * milliseconds. The created function comes with a `cancel` method to cancel
     * delayed invocations. Provide an options object to indicate that `func`
     * should be invoked on the leading and/or trailing edge of the `wait` timeout.
     * Subsequent calls to the throttled function return the result of the last
     * `func` call.
     *
     * **Note:** If `leading` and `trailing` options are `true`, `func` is invoked
     * on the trailing edge of the timeout only if the the throttled function is
     * invoked more than once during the `wait` timeout.
     *
     * See [David Corbacho's article](http://drupalmotion.com/article/debounce-and-throttle-visual-explanation)
     * for details over the differences between `_.throttle` and `_.debounce`.
     *
     * @static
     * @memberOf _
     * @category Function
     * @param {Function} func The function to throttle.
     * @param {number} wait The number of milliseconds to throttle invocations to.
     * @param {Object} [options] The options object.
     * @param {boolean} [options.leading=true] Specify invoking on the leading
     *  edge of the timeout.
     * @param {boolean} [options.trailing=true] Specify invoking on the trailing
     *  edge of the timeout.
     * @returns {Function} Returns the new throttled function.
     * @example
     *
     * // avoid excessively updating the position while scrolling
     * jQuery(window).on('scroll', _.throttle(updatePosition, 100));
     *
     * // invoke `renewToken` when the click event is fired, but not more than once every 5 minutes
     * var throttled =  _.throttle(renewToken, 300000, { 'trailing': false })
     * jQuery('.interactive').on('click', throttled);
     *
     * // cancel a trailing throttled call
     * jQuery(window).on('popstate', throttled.cancel);
     */
    function throttle(func, wait, options) {
      var leading = true,
          trailing = true;

      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      if (options === false) {
        leading = false;
      } else if (isObject(options)) {
        leading = 'leading' in options ? !!options.leading : leading;
        trailing = 'trailing' in options ? !!options.trailing : trailing;
      }
      debounceOptions.leading = leading;
      debounceOptions.maxWait = +wait;
      debounceOptions.trailing = trailing;
      return debounce(func, wait, debounceOptions);
    }

    /**
     * Creates a function that provides `value` to the wrapper function as its
     * first argument. Any additional arguments provided to the function are
     * appended to those provided to the wrapper function. The wrapper is invoked
     * with the `this` binding of the created function.
     *
     * @static
     * @memberOf _
     * @category Function
     * @param {*} value The value to wrap.
     * @param {Function} wrapper The wrapper function.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var p = _.wrap(_.escape, function(func, text) {
     *   return '<p>' + func(text) + '</p>';
     * });
     *
     * p('fred, barney, & pebbles');
     * // => '<p>fred, barney, &amp; pebbles</p>'
     */
    function wrap(value, wrapper) {
      wrapper = wrapper == null ? identity : wrapper;
      return createWrapper(wrapper, PARTIAL_FLAG, null, [value], []);
    }

    /*------------------------------------------------------------------------*/

    /**
     * Creates a clone of `value`. If `isDeep` is `true` nested objects are cloned,
     * otherwise they are assigned by reference. If `customizer` is provided it is
     * invoked to produce the cloned values. If `customizer` returns `undefined`
     * cloning is handled by the method instead. The `customizer` is bound to
     * `thisArg` and invoked with two argument; (value [, index|key, object]).
     *
     * **Note:** This method is loosely based on the structured clone algorithm.
     * The enumerable properties of `arguments` objects and objects created by
     * constructors other than `Object` are cloned to plain `Object` objects. An
     * empty object is returned for uncloneable values such as functions, DOM nodes,
     * Maps, Sets, and WeakMaps. See the [HTML5 specification](http://www.w3.org/TR/html5/infrastructure.html#internal-structured-cloning-algorithm)
     * for more details.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {*} value The value to clone.
     * @param {boolean} [isDeep] Specify a deep clone.
     * @param {Function} [customizer] The function to customize cloning values.
     * @param {*} [thisArg] The `this` binding of `customizer`.
     * @returns {*} Returns the cloned value.
     * @example
     *
     * var users = [
     *   { 'user': 'barney' },
     *   { 'user': 'fred' }
     * ];
     *
     * var shallow = _.clone(users);
     * shallow[0] === users[0];
     * // => true
     *
     * var deep = _.clone(users, true);
     * deep[0] === users[0];
     * // => false
     *
     * // using a customizer callback
     * var body = _.clone(document.body, function(value) {
     *   return _.isElement(value) ? value.cloneNode(false) : undefined;
     * });
     *
     * body === document.body
     * // => false
     * body.nodeName
     * // => BODY
     * body.childNodes.length;
     * // => 0
     */
    function clone(value, isDeep, customizer, thisArg) {
      // Juggle arguments.
      if (typeof isDeep != 'boolean' && isDeep != null) {
        thisArg = customizer;
        customizer = isIterateeCall(value, isDeep, thisArg) ? null : isDeep;
        isDeep = false;
      }
      customizer = typeof customizer == 'function' && bindCallback(customizer, thisArg, 1);
      return baseClone(value, isDeep, customizer);
    }

    /**
     * Creates a deep clone of `value`. If `customizer` is provided it is invoked
     * to produce the cloned values. If `customizer` returns `undefined` cloning
     * is handled by the method instead. The `customizer` is bound to `thisArg`
     * and invoked with two argument; (value [, index|key, object]).
     *
     * **Note:** This method is loosely based on the structured clone algorithm.
     * The enumerable properties of `arguments` objects and objects created by
     * constructors other than `Object` are cloned to plain `Object` objects. An
     * empty object is returned for uncloneable values such as functions, DOM nodes,
     * Maps, Sets, and WeakMaps. See the [HTML5 specification](http://www.w3.org/TR/html5/infrastructure.html#internal-structured-cloning-algorithm)
     * for more details.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {*} value The value to deep clone.
     * @param {Function} [customizer] The function to customize cloning values.
     * @param {*} [thisArg] The `this` binding of `customizer`.
     * @returns {*} Returns the deep cloned value.
     * @example
     *
     * var users = [
     *   { 'user': 'barney' },
     *   { 'user': 'fred' }
     * ];
     *
     * var deep = _.cloneDeep(users);
     * deep[0] === users[0];
     * // => false
     *
     * // using a customizer callback
     * var el = _.cloneDeep(document.body, function(value) {
     *   return _.isElement(value) ? value.cloneNode(true) : undefined;
     * });
     *
     * body === document.body
     * // => false
     * body.nodeName
     * // => BODY
     * body.childNodes.length;
     * // => 20
     */
    function cloneDeep(value, customizer, thisArg) {
      customizer = typeof customizer == 'function' && bindCallback(customizer, thisArg, 1);
      return baseClone(value, true, customizer);
    }

    /**
     * Checks if `value` is classified as an `arguments` object.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
     * @example
     *
     * (function() { return _.isArguments(arguments); })();
     * // => true
     *
     * _.isArguments([1, 2, 3]);
     * // => false
     */
    function isArguments(value) {
      var length = isObjectLike(value) ? value.length : undefined;
      return (isLength(length) && objToString.call(value) == argsTag) || false;
    }

    /**
     * Checks if `value` is classified as an `Array` object.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
     * @example
     *
     * _.isArray([1, 2, 3]);
     * // => true
     *
     * (function() { return _.isArray(arguments); })();
     * // => false
     */
    var isArray = nativeIsArray || function(value) {
      return (isObjectLike(value) && isLength(value.length) && objToString.call(value) == arrayTag) || false;
    };

    /**
     * Checks if `value` is classified as a boolean primitive or object.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
     * @example
     *
     * _.isBoolean(false);
     * // => true
     *
     * _.isBoolean(null);
     * // => false
     */
    function isBoolean(value) {
      return (value === true || value === false || isObjectLike(value) && objToString.call(value) == boolTag) || false;
    }

    /**
     * Checks if `value` is classified as a `Date` object.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
     * @example
     *
     * _.isDate(new Date);
     * // => true
     *
     * _.isDate('Mon April 23 2012');
     * // => false
     */
    function isDate(value) {
      return (isObjectLike(value) && objToString.call(value) == dateTag) || false;
    }

    /**
     * Checks if `value` is a DOM element.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.
     * @example
     *
     * _.isElement(document.body);
     * // => true
     *
     * _.isElement('<body>');
     * // => false
     */
    function isElement(value) {
      return (value && value.nodeType === 1 && isObjectLike(value) &&
        objToString.call(value).indexOf('Element') > -1) || false;
    }
    // Fallback for environments without DOM support.
    if (!support.dom) {
      isElement = function(value) {
        return (value && value.nodeType === 1 && isObjectLike(value) && !isPlainObject(value)) || false;
      };
    }

    /**
     * Checks if a value is empty. A value is considered empty unless it is an
     * `arguments` object, array, string, or jQuery-like collection with a length
     * greater than `0` or an object with own enumerable properties.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {Array|Object|string} value The value to inspect.
     * @returns {boolean} Returns `true` if `value` is empty, else `false`.
     * @example
     *
     * _.isEmpty(null);
     * // => true
     *
     * _.isEmpty(true);
     * // => true
     *
     * _.isEmpty(1);
     * // => true
     *
     * _.isEmpty([1, 2, 3]);
     * // => false
     *
     * _.isEmpty({ 'a': 1 });
     * // => false
     */
    function isEmpty(value) {
      if (value == null) {
        return true;
      }
      var length = value.length;
      if (isLength(length) && (isArray(value) || isString(value) || isArguments(value) ||
          (isObjectLike(value) && isFunction(value.splice)))) {
        return !length;
      }
      return !keys(value).length;
    }

    /**
     * Performs a deep comparison between two values to determine if they are
     * equivalent. If `customizer` is provided it is invoked to compare values.
     * If `customizer` returns `undefined` comparisons are handled by the method
     * instead. The `customizer` is bound to `thisArg` and invoked with three
     * arguments; (value, other [, index|key]).
     *
     * **Note:** This method supports comparing arrays, booleans, `Date` objects,
     * numbers, `Object` objects, regexes, and strings. Objects are compared by
     * their own, not inherited, enumerable properties. Functions and DOM nodes
     * are **not** supported. Provide a customizer function to extend support
     * for comparing other values.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {*} value The value to compare.
     * @param {*} other The other value to compare.
     * @param {Function} [customizer] The function to customize comparing values.
     * @param {*} [thisArg] The `this` binding of `customizer`.
     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
     * @example
     *
     * var object = { 'user': 'fred' };
     * var other = { 'user': 'fred' };
     *
     * object == other;
     * // => false
     *
     * _.isEqual(object, other);
     * // => true
     *
     * // using a customizer callback
     * var array = ['hello', 'goodbye'];
     * var other = ['hi', 'goodbye'];
     *
     * _.isEqual(array, other, function(value, other) {
     *   return _.every([value, other], RegExp.prototype.test, /^h(?:i|ello)$/) || undefined;
     * });
     * // => true
     */
    function isEqual(value, other, customizer, thisArg) {
      customizer = typeof customizer == 'function' && bindCallback(customizer, thisArg, 3);
      if (!customizer && isStrictComparable(value) && isStrictComparable(other)) {
        return value === other;
      }
      var result = customizer ? customizer(value, other) : undefined;
      return typeof result == 'undefined' ? baseIsEqual(value, other, customizer) : !!result;
    }

    /**
     * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,
     * `SyntaxError`, `TypeError`, or `URIError` object.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an error object, else `false`.
     * @example
     *
     * _.isError(new Error);
     * // => true
     *
     * _.isError(Error);
     * // => false
     */
    function isError(value) {
      return (isObjectLike(value) && typeof value.message == 'string' && objToString.call(value) == errorTag) || false;
    }

    /**
     * Checks if `value` is a finite primitive number.
     *
     * **Note:** This method is based on ES `Number.isFinite`. See the
     * [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-number.isfinite)
     * for more details.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a finite number, else `false`.
     * @example
     *
     * _.isFinite(10);
     * // => true
     *
     * _.isFinite('10');
     * // => false
     *
     * _.isFinite(true);
     * // => false
     *
     * _.isFinite(Object(10));
     * // => false
     *
     * _.isFinite(Infinity);
     * // => false
     */
    var isFinite = nativeNumIsFinite || function(value) {
      return typeof value == 'number' && nativeIsFinite(value);
    };

    /**
     * Checks if `value` is classified as a `Function` object.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
     * @example
     *
     * _.isFunction(_);
     * // => true
     *
     * _.isFunction(/abc/);
     * // => false
     */
    function isFunction(value) {
      // Avoid a Chakra JIT bug in compatibility modes of IE 11.
      // See https://github.com/jashkenas/underscore/issues/1621 for more details.
      return typeof value == 'function' || false;
    }
    // Fallback for environments that return incorrect `typeof` operator results.
    if (isFunction(/x/) || (Uint8Array && !isFunction(Uint8Array))) {
      isFunction = function(value) {
        // The use of `Object#toString` avoids issues with the `typeof` operator
        // in older versions of Chrome and Safari which return 'function' for regexes
        // and Safari 8 equivalents which return 'object' for typed array constructors.
        return objToString.call(value) == funcTag;
      };
    }

    /**
     * Checks if `value` is the language type of `Object`.
     * (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
     *
     * **Note:** See the [ES5 spec](https://es5.github.io/#x8) for more details.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an object, else `false`.
     * @example
     *
     * _.isObject({});
     * // => true
     *
     * _.isObject([1, 2, 3]);
     * // => true
     *
     * _.isObject(1);
     * // => false
     */
    function isObject(value) {
      // Avoid a V8 JIT bug in Chrome 19-20.
      // See https://code.google.com/p/v8/issues/detail?id=2291 for more details.
      var type = typeof value;
      return type == 'function' || (value && type == 'object') || false;
    }

    /**
     * Performs a deep comparison between `object` and `source` to determine if
     * `object` contains equivalent property values. If `customizer` is provided
     * it is invoked to compare values. If `customizer` returns `undefined`
     * comparisons are handled by the method instead. The `customizer` is bound
     * to `thisArg` and invoked with three arguments; (value, other, index|key).
     *
     * **Note:** This method supports comparing properties of arrays, booleans,
     * `Date` objects, numbers, `Object` objects, regexes, and strings. Functions
     * and DOM nodes are **not** supported. Provide a customizer function to extend
     * support for comparing other values.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {Object} object The object to inspect.
     * @param {Object} source The object of property values to match.
     * @param {Function} [customizer] The function to customize comparing values.
     * @param {*} [thisArg] The `this` binding of `customizer`.
     * @returns {boolean} Returns `true` if `object` is a match, else `false`.
     * @example
     *
     * var object = { 'user': 'fred', 'age': 40 };
     *
     * _.isMatch(object, { 'age': 40 });
     * // => true
     *
     * _.isMatch(object, { 'age': 36 });
     * // => false
     *
     * // using a customizer callback
     * var object = { 'greeting': 'hello' };
     * var source = { 'greeting': 'hi' };
     *
     * _.isMatch(object, source, function(value, other) {
     *   return _.every([value, other], RegExp.prototype.test, /^h(?:i|ello)$/) || undefined;
     * });
     * // => true
     */
    function isMatch(object, source, customizer, thisArg) {
      var props = keys(source),
          length = props.length;

      customizer = typeof customizer == 'function' && bindCallback(customizer, thisArg, 3);
      if (!customizer && length == 1) {
        var key = props[0],
            value = source[key];

        if (isStrictComparable(value)) {
          return object != null && value === object[key] && hasOwnProperty.call(object, key);
        }
      }
      var values = Array(length),
          strictCompareFlags = Array(length);

      while (length--) {
        value = values[length] = source[props[length]];
        strictCompareFlags[length] = isStrictComparable(value);
      }
      return baseIsMatch(object, props, values, strictCompareFlags, customizer);
    }

    /**
     * Checks if `value` is `NaN`.
     *
     * **Note:** This method is not the same as native `isNaN` which returns `true`
     * for `undefined` and other non-numeric values. See the [ES5 spec](https://es5.github.io/#x15.1.2.4)
     * for more details.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
     * @example
     *
     * _.isNaN(NaN);
     * // => true
     *
     * _.isNaN(new Number(NaN));
     * // => true
     *
     * isNaN(undefined);
     * // => true
     *
     * _.isNaN(undefined);
     * // => false
     */
    function isNaN(value) {
      // An `NaN` primitive is the only value that is not equal to itself.
      // Perform the `toStringTag` check first to avoid errors with some host objects in IE.
      return isNumber(value) && value != +value;
    }

    /**
     * Checks if `value` is a native function.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a native function, else `false`.
     * @example
     *
     * _.isNative(Array.prototype.push);
     * // => true
     *
     * _.isNative(_);
     * // => false
     */
    function isNative(value) {
      if (value == null) {
        return false;
      }
      if (objToString.call(value) == funcTag) {
        return reNative.test(fnToString.call(value));
      }
      return (isObjectLike(value) && reHostCtor.test(value)) || false;
    }

    /**
     * Checks if `value` is `null`.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is `null`, else `false`.
     * @example
     *
     * _.isNull(null);
     * // => true
     *
     * _.isNull(void 0);
     * // => false
     */
    function isNull(value) {
      return value === null;
    }

    /**
     * Checks if `value` is classified as a `Number` primitive or object.
     *
     * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are classified
     * as numbers, use the `_.isFinite` method.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
     * @example
     *
     * _.isNumber(8.4);
     * // => true
     *
     * _.isNumber(NaN);
     * // => true
     *
     * _.isNumber('8.4');
     * // => false
     */
    function isNumber(value) {
      return typeof value == 'number' || (isObjectLike(value) && objToString.call(value) == numberTag) || false;
    }

    /**
     * Checks if `value` is a plain object, that is, an object created by the
     * `Object` constructor or one with a `[[Prototype]]` of `null`.
     *
     * **Note:** This method assumes objects created by the `Object` constructor
     * have no inherited enumerable properties.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     * }
     *
     * _.isPlainObject(new Foo);
     * // => false
     *
     * _.isPlainObject([1, 2, 3]);
     * // => false
     *
     * _.isPlainObject({ 'x': 0, 'y': 0 });
     * // => true
     *
     * _.isPlainObject(Object.create(null));
     * // => true
     */
    var isPlainObject = !getPrototypeOf ? shimIsPlainObject : function(value) {
      if (!(value && objToString.call(value) == objectTag)) {
        return false;
      }
      var valueOf = value.valueOf,
          objProto = isNative(valueOf) && (objProto = getPrototypeOf(valueOf)) && getPrototypeOf(objProto);

      return objProto
        ? (value == objProto || getPrototypeOf(value) == objProto)
        : shimIsPlainObject(value);
    };

    /**
     * Checks if `value` is classified as a `RegExp` object.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
     * @example
     *
     * _.isRegExp(/abc/);
     * // => true
     *
     * _.isRegExp('/abc/');
     * // => false
     */
    function isRegExp(value) {
      return (isObjectLike(value) && objToString.call(value) == regexpTag) || false;
    }

    /**
     * Checks if `value` is classified as a `String` primitive or object.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
     * @example
     *
     * _.isString('abc');
     * // => true
     *
     * _.isString(1);
     * // => false
     */
    function isString(value) {
      return typeof value == 'string' || (isObjectLike(value) && objToString.call(value) == stringTag) || false;
    }

    /**
     * Checks if `value` is classified as a typed array.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
     * @example
     *
     * _.isTypedArray(new Uint8Array);
     * // => true
     *
     * _.isTypedArray([]);
     * // => false
     */
    function isTypedArray(value) {
      return (isObjectLike(value) && isLength(value.length) && typedArrayTags[objToString.call(value)]) || false;
    }

    /**
     * Checks if `value` is `undefined`.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.
     * @example
     *
     * _.isUndefined(void 0);
     * // => true
     *
     * _.isUndefined(null);
     * // => false
     */
    function isUndefined(value) {
      return typeof value == 'undefined';
    }

    /**
     * Converts `value` to an array.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {Array} Returns the converted array.
     * @example
     *
     * (function() { return _.toArray(arguments).slice(1); })(1, 2, 3);
     * // => [2, 3]
     */
    function toArray(value) {
      var length = value ? value.length : 0;
      if (!isLength(length)) {
        return values(value);
      }
      if (!length) {
        return [];
      }
      return arrayCopy(value);
    }

    /**
     * Converts `value` to a plain object flattening inherited enumerable
     * properties of `value` to own properties of the plain object.
     *
     * @static
     * @memberOf _
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {Object} Returns the converted plain object.
     * @example
     *
     * function Foo() {
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.assign({ 'a': 1 }, new Foo);
     * // => { 'a': 1, 'b': 2 }
     *
     * _.assign({ 'a': 1 }, _.toPlainObject(new Foo));
     * // => { 'a': 1, 'b': 2, 'c': 3 }
     */
    function toPlainObject(value) {
      return baseCopy(value, keysIn(value));
    }

    /*------------------------------------------------------------------------*/

    /**
     * Assigns own enumerable properties of source object(s) to the destination
     * object. Subsequent sources overwrite property assignments of previous sources.
     * If `customizer` is provided it is invoked to produce the assigned values.
     * The `customizer` is bound to `thisArg` and invoked with five arguments;
     * (objectValue, sourceValue, key, object, source).
     *
     * @static
     * @memberOf _
     * @alias extend
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} [sources] The source objects.
     * @param {Function} [customizer] The function to customize assigning values.
     * @param {*} [thisArg] The `this` binding of `customizer`.
     * @returns {Object} Returns `object`.
     * @example
     *
     * _.assign({ 'user': 'barney' }, { 'age': 40 }, { 'user': 'fred' });
     * // => { 'user': 'fred', 'age': 40 }
     *
     * // using a customizer callback
     * var defaults = _.partialRight(_.assign, function(value, other) {
     *   return typeof value == 'undefined' ? other : value;
     * });
     *
     * defaults({ 'user': 'barney' }, { 'age': 36 }, { 'user': 'fred' });
     * // => { 'user': 'barney', 'age': 36 }
     */
    var assign = createAssigner(baseAssign);

    /**
     * Creates an object that inherits from the given `prototype` object. If a
     * `properties` object is provided its own enumerable properties are assigned
     * to the created object.
     *
     * @static
     * @memberOf _
     * @category Object
     * @param {Object} prototype The object to inherit from.
     * @param {Object} [properties] The properties to assign to the object.
     * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
     * @returns {Object} Returns the new object.
     * @example
     *
     * function Shape() {
     *   this.x = 0;
     *   this.y = 0;
     * }
     *
     * function Circle() {
     *   Shape.call(this);
     * }
     *
     * Circle.prototype = _.create(Shape.prototype, { 'constructor': Circle });
     *
     * var circle = new Circle;
     * circle instanceof Circle;
     * // => true
     *
     * circle instanceof Shape;
     * // => true
     */
    function create(prototype, properties, guard) {
      var result = baseCreate(prototype);
      if (guard && isIterateeCall(prototype, properties, guard)) {
        properties = null;
      }
      return properties ? baseCopy(properties, result, keys(properties)) : result;
    }

    /**
     * Assigns own enumerable properties of source object(s) to the destination
     * object for all destination properties that resolve to `undefined`. Once a
     * property is set, additional defaults of the same property are ignored.
     *
     * @static
     * @memberOf _
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} [sources] The source objects.
     * @returns {Object} Returns `object`.
     * @example
     *
     * _.defaults({ 'user': 'barney' }, { 'age': 36 }, { 'user': 'fred' });
     * // => { 'user': 'barney', 'age': 36 }
     */
    function defaults(object) {
      if (object == null) {
        return object;
      }
      var args = arrayCopy(arguments);
      args.push(assignDefaults);
      return assign.apply(undefined, args);
    }

    /**
     * This method is like `_.findIndex` except that it returns the key of the
     * first element `predicate` returns truthy for, instead of the element itself.
     *
     * If a property name is provided for `predicate` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `predicate` the created "_.matches" style
     * callback returns `true` for elements that have the properties of the given
     * object, else `false`.
     *
     * @static
     * @memberOf _
     * @category Object
     * @param {Object} object The object to search.
     * @param {Function|Object|string} [predicate=_.identity] The function invoked
     *  per iteration. If a property name or object is provided it is used to
     *  create a "_.property" or "_.matches" style callback respectively.
     * @param {*} [thisArg] The `this` binding of `predicate`.
     * @returns {string|undefined} Returns the key of the matched element, else `undefined`.
     * @example
     *
     * var users = {
     *   'barney':  { 'age': 36, 'active': true },
     *   'fred':    { 'age': 40, 'active': false },
     *   'pebbles': { 'age': 1,  'active': true }
     * };
     *
     * _.findKey(users, function(chr) { return chr.age < 40; });
     * // => 'barney' (iteration order is not guaranteed)
     *
     * // using the "_.matches" callback shorthand
     * _.findKey(users, { 'age': 1, 'active': true });
     * // => 'pebbles'
     *
     * // using the "_.matchesProperty" callback shorthand
     * _.findKey(users, 'active', false);
     * // => 'fred'
     *
     * // using the "_.property" callback shorthand
     * _.findKey(users, 'active');
     * // => 'barney'
     */
    function findKey(object, predicate, thisArg) {
      predicate = getCallback(predicate, thisArg, 3);
      return baseFind(object, predicate, baseForOwn, true);
    }

    /**
     * This method is like `_.findKey` except that it iterates over elements of
     * a collection in the opposite order.
     *
     * If a property name is provided for `predicate` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `predicate` the created "_.matches" style
     * callback returns `true` for elements that have the properties of the given
     * object, else `false`.
     *
     * @static
     * @memberOf _
     * @category Object
     * @param {Object} object The object to search.
     * @param {Function|Object|string} [predicate=_.identity] The function invoked
     *  per iteration. If a property name or object is provided it is used to
     *  create a "_.property" or "_.matches" style callback respectively.
     * @param {*} [thisArg] The `this` binding of `predicate`.
     * @returns {string|undefined} Returns the key of the matched element, else `undefined`.
     * @example
     *
     * var users = {
     *   'barney':  { 'age': 36, 'active': true },
     *   'fred':    { 'age': 40, 'active': false },
     *   'pebbles': { 'age': 1,  'active': true }
     * };
     *
     * _.findLastKey(users, function(chr) { return chr.age < 40; });
     * // => returns `pebbles` assuming `_.findKey` returns `barney`
     *
     * // using the "_.matches" callback shorthand
     * _.findLastKey(users, { 'age': 36, 'active': true });
     * // => 'barney'
     *
     * // using the "_.matchesProperty" callback shorthand
     * _.findLastKey(users, 'active', false);
     * // => 'fred'
     *
     * // using the "_.property" callback shorthand
     * _.findLastKey(users, 'active');
     * // => 'pebbles'
     */
    function findLastKey(object, predicate, thisArg) {
      predicate = getCallback(predicate, thisArg, 3);
      return baseFind(object, predicate, baseForOwnRight, true);
    }

    /**
     * Iterates over own and inherited enumerable properties of an object invoking
     * `iteratee` for each property. The `iteratee` is bound to `thisArg` and invoked
     * with three arguments; (value, key, object). Iterator functions may exit
     * iteration early by explicitly returning `false`.
     *
     * @static
     * @memberOf _
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {*} [thisArg] The `this` binding of `iteratee`.
     * @returns {Object} Returns `object`.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.forIn(new Foo, function(value, key) {
     *   console.log(key);
     * });
     * // => logs 'a', 'b', and 'c' (iteration order is not guaranteed)
     */
    function forIn(object, iteratee, thisArg) {
      if (typeof iteratee != 'function' || typeof thisArg != 'undefined') {
        iteratee = bindCallback(iteratee, thisArg, 3);
      }
      return baseFor(object, iteratee, keysIn);
    }

    /**
     * This method is like `_.forIn` except that it iterates over properties of
     * `object` in the opposite order.
     *
     * @static
     * @memberOf _
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {*} [thisArg] The `this` binding of `iteratee`.
     * @returns {Object} Returns `object`.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.forInRight(new Foo, function(value, key) {
     *   console.log(key);
     * });
     * // => logs 'c', 'b', and 'a' assuming `_.forIn ` logs 'a', 'b', and 'c'
     */
    function forInRight(object, iteratee, thisArg) {
      iteratee = bindCallback(iteratee, thisArg, 3);
      return baseForRight(object, iteratee, keysIn);
    }

    /**
     * Iterates over own enumerable properties of an object invoking `iteratee`
     * for each property. The `iteratee` is bound to `thisArg` and invoked with
     * three arguments; (value, key, object). Iterator functions may exit iteration
     * early by explicitly returning `false`.
     *
     * @static
     * @memberOf _
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {*} [thisArg] The `this` binding of `iteratee`.
     * @returns {Object} Returns `object`.
     * @example
     *
     * _.forOwn({ '0': 'zero', '1': 'one', 'length': 2 }, function(n, key) {
     *   console.log(key);
     * });
     * // => logs '0', '1', and 'length' (iteration order is not guaranteed)
     */
    function forOwn(object, iteratee, thisArg) {
      if (typeof iteratee != 'function' || typeof thisArg != 'undefined') {
        iteratee = bindCallback(iteratee, thisArg, 3);
      }
      return baseForOwn(object, iteratee);
    }

    /**
     * This method is like `_.forOwn` except that it iterates over properties of
     * `object` in the opposite order.
     *
     * @static
     * @memberOf _
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {*} [thisArg] The `this` binding of `iteratee`.
     * @returns {Object} Returns `object`.
     * @example
     *
     * _.forOwnRight({ '0': 'zero', '1': 'one', 'length': 2 }, function(n, key) {
     *   console.log(key);
     * });
     * // => logs 'length', '1', and '0' assuming `_.forOwn` logs '0', '1', and 'length'
     */
    function forOwnRight(object, iteratee, thisArg) {
      iteratee = bindCallback(iteratee, thisArg, 3);
      return baseForRight(object, iteratee, keys);
    }

    /**
     * Creates an array of function property names from all enumerable properties,
     * own and inherited, of `object`.
     *
     * @static
     * @memberOf _
     * @alias methods
     * @category Object
     * @param {Object} object The object to inspect.
     * @returns {Array} Returns the new array of property names.
     * @example
     *
     * _.functions(_);
     * // => ['all', 'any', 'bind', ...]
     */
    function functions(object) {
      return baseFunctions(object, keysIn(object));
    }

    /**
     * Checks if `key` exists as a direct property of `object` instead of an
     * inherited property.
     *
     * @static
     * @memberOf _
     * @category Object
     * @param {Object} object The object to inspect.
     * @param {string} key The key to check.
     * @returns {boolean} Returns `true` if `key` is a direct property, else `false`.
     * @example
     *
     * _.has({ 'a': 1, 'b': 2, 'c': 3 }, 'b');
     * // => true
     */
    function has(object, key) {
      return object ? hasOwnProperty.call(object, key) : false;
    }

    /**
     * Creates an object composed of the inverted keys and values of `object`.
     * If `object` contains duplicate values, subsequent values overwrite property
     * assignments of previous values unless `multiValue` is `true`.
     *
     * @static
     * @memberOf _
     * @category Object
     * @param {Object} object The object to invert.
     * @param {boolean} [multiValue] Allow multiple values per key.
     * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
     * @returns {Object} Returns the new inverted object.
     * @example
     *
     * _.invert({ 'first': 'fred', 'second': 'barney' });
     * // => { 'fred': 'first', 'barney': 'second' }
     *
     * // without `multiValue`
     * _.invert({ 'first': 'fred', 'second': 'barney', 'third': 'fred' });
     * // => { 'fred': 'third', 'barney': 'second' }
     *
     * // with `multiValue`
     * _.invert({ 'first': 'fred', 'second': 'barney', 'third': 'fred' }, true);
     * // => { 'fred': ['first', 'third'], 'barney': ['second'] }
     */
    function invert(object, multiValue, guard) {
      if (guard && isIterateeCall(object, multiValue, guard)) {
        multiValue = null;
      }
      var index = -1,
          props = keys(object),
          length = props.length,
          result = {};

      while (++index < length) {
        var key = props[index],
            value = object[key];

        if (multiValue) {
          if (hasOwnProperty.call(result, value)) {
            result[value].push(key);
          } else {
            result[value] = [key];
          }
        }
        else {
          result[value] = key;
        }
      }
      return result;
    }

    /**
     * Creates an array of the own enumerable property names of `object`.
     *
     * **Note:** Non-object values are coerced to objects. See the
     * [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.keys)
     * for more details.
     *
     * @static
     * @memberOf _
     * @category Object
     * @param {Object} object The object to inspect.
     * @returns {Array} Returns the array of property names.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.keys(new Foo);
     * // => ['a', 'b'] (iteration order is not guaranteed)
     *
     * _.keys('hi');
     * // => ['0', '1']
     */
    var keys = !nativeKeys ? shimKeys : function(object) {
      if (object) {
        var Ctor = object.constructor,
            length = object.length;
      }
      if ((typeof Ctor == 'function' && Ctor.prototype === object) ||
         (typeof object != 'function' && (length && isLength(length)))) {
        return shimKeys(object);
      }
      return isObject(object) ? nativeKeys(object) : [];
    };

    /**
     * Creates an array of the own and inherited enumerable property names of `object`.
     *
     * **Note:** Non-object values are coerced to objects.
     *
     * @static
     * @memberOf _
     * @category Object
     * @param {Object} object The object to inspect.
     * @returns {Array} Returns the array of property names.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.keysIn(new Foo);
     * // => ['a', 'b', 'c'] (iteration order is not guaranteed)
     */
    function keysIn(object) {
      if (object == null) {
        return [];
      }
      if (!isObject(object)) {
        object = Object(object);
      }
      var length = object.length;
      length = (length && isLength(length) &&
        (isArray(object) || (support.nonEnumArgs && isArguments(object))) && length) || 0;

      var Ctor = object.constructor,
          index = -1,
          isProto = typeof Ctor == 'function' && Ctor.prototype === object,
          result = Array(length),
          skipIndexes = length > 0;

      while (++index < length) {
        result[index] = (index + '');
      }
      for (var key in object) {
        if (!(skipIndexes && isIndex(key, length)) &&
            !(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {
          result.push(key);
        }
      }
      return result;
    }

    /**
     * Creates an object with the same keys as `object` and values generated by
     * running each own enumerable property of `object` through `iteratee`. The
     * iteratee function is bound to `thisArg` and invoked with three arguments;
     * (value, key, object).
     *
     * If a property name is provided for `iteratee` the created "_.property"
     * style callback returns the property value of the given element.
     *
     * If value is also provided for `thisArg` the created "_.matchesProperty"
     * style callback returns `true` for elements that have a matching property
     * value, else `false`.
     *
     * If an object is provided for `iteratee` the created "_.matches" style
     * callback returns `true` for elements that have the properties of the given
     * object, else `false`.
     *
     * @static
     * @memberOf _
     * @category Object
     * @param {Object} object The object to iterate over.
     * @param {Function|Object|string} [iteratee=_.identity] The function invoked
     *  per iteration. If a property name or object is provided it is used to
     *  create a "_.property" or "_.matches" style callback respectively.
     * @param {*} [thisArg] The `this` binding of `iteratee`.
     * @returns {Object} Returns the new mapped object.
     * @example
     *
     * _.mapValues({ 'a': 1, 'b': 2, 'c': 3} , function(n) { return n * 3; });
     * // => { 'a': 3, 'b': 6, 'c': 9 }
     *
     * var users = {
     *   'fred':    { 'user': 'fred',    'age': 40 },
     *   'pebbles': { 'user': 'pebbles', 'age': 1 }
     * };
     *
     * // using the "_.property" callback shorthand
     * _.mapValues(users, 'age');
     * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
     */
    function mapValues(object, iteratee, thisArg) {
      var result = {};
      iteratee = getCallback(iteratee, thisArg, 3);

      baseForOwn(object, function(value, key, object) {
        result[key] = iteratee(value, key, object);
      });
      return result;
    }

    /**
     * Recursively merges own enumerable properties of the source object(s), that
     * don't resolve to `undefined` into the destination object. Subsequent sources
     * overwrite property assignments of previous sources. If `customizer` is
     * provided it is invoked to produce the merged values of the destination and
     * source properties. If `customizer` returns `undefined` merging is handled
     * by the method instead. The `customizer` is bound to `thisArg` and invoked
     * with five arguments; (objectValue, sourceValue, key, object, source).
     *
     * @static
     * @memberOf _
     * @category Object
     * @param {Object} object The destination object.
     * @param {...Object} [sources] The source objects.
     * @param {Function} [customizer] The function to customize merging properties.
     * @param {*} [thisArg] The `this` binding of `customizer`.
     * @returns {Object} Returns `object`.
     * @example
     *
     * var users = {
     *   'data': [{ 'user': 'barney' }, { 'user': 'fred' }]
     * };
     *
     * var ages = {
     *   'data': [{ 'age': 36 }, { 'age': 40 }]
     * };
     *
     * _.merge(users, ages);
     * // => { 'data': [{ 'user': 'barney', 'age': 36 }, { 'user': 'fred', 'age': 40 }] }
     *
     * // using a customizer callback
     * var object = {
     *   'fruits': ['apple'],
     *   'vegetables': ['beet']
     * };
     *
     * var other = {
     *   'fruits': ['banana'],
     *   'vegetables': ['carrot']
     * };
     *
     * _.merge(object, other, function(a, b) {
     *   return _.isArray(a) ? a.concat(b) : undefined;
     * });
     * // => { 'fruits': ['apple', 'banana'], 'vegetables': ['beet', 'carrot'] }
     */
    var merge = createAssigner(baseMerge);

    /**
     * The opposite of `_.pick`; this method creates an object composed of the
     * own and inherited enumerable properties of `object` that are not omitted.
     * Property names may be specified as individual arguments or as arrays of
     * property names. If `predicate` is provided it is invoked for each property
     * of `object` omitting the properties `predicate` returns truthy for. The
     * predicate is bound to `thisArg` and invoked with three arguments;
     * (value, key, object).
     *
     * @static
     * @memberOf _
     * @category Object
     * @param {Object} object The source object.
     * @param {Function|...(string|string[])} [predicate] The function invoked per
     *  iteration or property names to omit, specified as individual property
     *  names or arrays of property names.
     * @param {*} [thisArg] The `this` binding of `predicate`.
     * @returns {Object} Returns the new object.
     * @example
     *
     * var object = { 'user': 'fred', 'age': 40 };
     *
     * _.omit(object, 'age');
     * // => { 'user': 'fred' }
     *
     * _.omit(object, _.isNumber);
     * // => { 'user': 'fred' }
     */
    function omit(object, predicate, thisArg) {
      if (object == null) {
        return {};
      }
      if (typeof predicate != 'function') {
        var props = arrayMap(baseFlatten(arguments, false, false, 1), String);
        return pickByArray(object, baseDifference(keysIn(object), props));
      }
      predicate = bindCallback(predicate, thisArg, 3);
      return pickByCallback(object, function(value, key, object) {
        return !predicate(value, key, object);
      });
    }

    /**
     * Creates a two dimensional array of the key-value pairs for `object`,
     * e.g. `[[key1, value1], [key2, value2]]`.
     *
     * @static
     * @memberOf _
     * @category Object
     * @param {Object} object The object to inspect.
     * @returns {Array} Returns the new array of key-value pairs.
     * @example
     *
     * _.pairs({ 'barney': 36, 'fred': 40 });
     * // => [['barney', 36], ['fred', 40]] (iteration order is not guaranteed)
     */
    function pairs(object) {
      var index = -1,
          props = keys(object),
          length = props.length,
          result = Array(length);

      while (++index < length) {
        var key = props[index];
        result[index] = [key, object[key]];
      }
      return result;
    }

    /**
     * Creates an object composed of the picked `object` properties. Property
     * names may be specified as individual arguments or as arrays of property
     * names. If `predicate` is provided it is invoked for each property of `object`
     * picking the properties `predicate` returns truthy for. The predicate is
     * bound to `thisArg` and invoked with three arguments; (value, key, object).
     *
     * @static
     * @memberOf _
     * @category Object
     * @param {Object} object The source object.
     * @param {Function|...(string|string[])} [predicate] The function invoked per
     *  iteration or property names to pick, specified as individual property
     *  names or arrays of property names.
     * @param {*} [thisArg] The `this` binding of `predicate`.
     * @returns {Object} Returns the new object.
     * @example
     *
     * var object = { 'user': 'fred', 'age': 40 };
     *
     * _.pick(object, 'user');
     * // => { 'user': 'fred' }
     *
     * _.pick(object, _.isString);
     * // => { 'user': 'fred' }
     */
    function pick(object, predicate, thisArg) {
      if (object == null) {
        return {};
      }
      return typeof predicate == 'function'
        ? pickByCallback(object, bindCallback(predicate, thisArg, 3))
        : pickByArray(object, baseFlatten(arguments, false, false, 1));
    }

    /**
     * Resolves the value of property `key` on `object`. If the value of `key` is
     * a function it is invoked with the `this` binding of `object` and its result
     * is returned, else the property value is returned. If the property value is
     * `undefined` the `defaultValue` is used in its place.
     *
     * @static
     * @memberOf _
     * @category Object
     * @param {Object} object The object to query.
     * @param {string} key The key of the property to resolve.
     * @param {*} [defaultValue] The value returned if the property value
     *  resolves to `undefined`.
     * @returns {*} Returns the resolved value.
     * @example
     *
     * var object = { 'user': 'fred', 'age': _.constant(40) };
     *
     * _.result(object, 'user');
     * // => 'fred'
     *
     * _.result(object, 'age');
     * // => 40
     *
     * _.result(object, 'status', 'busy');
     * // => 'busy'
     *
     * _.result(object, 'status', _.constant('busy'));
     * // => 'busy'
     */
    function result(object, key, defaultValue) {
      var value = object == null ? undefined : object[key];
      if (typeof value == 'undefined') {
        value = defaultValue;
      }
      return isFunction(value) ? value.call(object) : value;
    }

    /**
     * An alternative to `_.reduce`; this method transforms `object` to a new
     * `accumulator` object which is the result of running each of its own enumerable
     * properties through `iteratee`, with each invocation potentially mutating
     * the `accumulator` object. The `iteratee` is bound to `thisArg` and invoked
     * with four arguments; (accumulator, value, key, object). Iterator functions
     * may exit iteration early by explicitly returning `false`.
     *
     * @static
     * @memberOf _
     * @category Object
     * @param {Array|Object} object The object to iterate over.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {*} [accumulator] The custom accumulator value.
     * @param {*} [thisArg] The `this` binding of `iteratee`.
     * @returns {*} Returns the accumulated value.
     * @example
     *
     * var squares = _.transform([1, 2, 3, 4, 5, 6], function(result, n) {
     *   n *= n;
     *   if (n % 2) {
     *     return result.push(n) < 3;
     *   }
     * });
     * // => [1, 9, 25]
     *
     * var mapped = _.transform({ 'a': 1, 'b': 2, 'c': 3 }, function(result, n, key) {
     *   result[key] = n * 3;
     * });
     * // => { 'a': 3, 'b': 6, 'c': 9 }
     */
    function transform(object, iteratee, accumulator, thisArg) {
      var isArr = isArray(object) || isTypedArray(object);
      iteratee = getCallback(iteratee, thisArg, 4);

      if (accumulator == null) {
        if (isArr || isObject(object)) {
          var Ctor = object.constructor;
          if (isArr) {
            accumulator = isArray(object) ? new Ctor : [];
          } else {
            accumulator = baseCreate(isFunction(Ctor) && Ctor.prototype);
          }
        } else {
          accumulator = {};
        }
      }
      (isArr ? arrayEach : baseForOwn)(object, function(value, index, object) {
        return iteratee(accumulator, value, index, object);
      });
      return accumulator;
    }

    /**
     * Creates an array of the own enumerable property values of `object`.
     *
     * **Note:** Non-object values are coerced to objects.
     *
     * @static
     * @memberOf _
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property values.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.values(new Foo);
     * // => [1, 2] (iteration order is not guaranteed)
     *
     * _.values('hi');
     * // => ['h', 'i']
     */
    function values(object) {
      return baseValues(object, keys(object));
    }

    /**
     * Creates an array of the own and inherited enumerable property values
     * of `object`.
     *
     * **Note:** Non-object values are coerced to objects.
     *
     * @static
     * @memberOf _
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property values.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.valuesIn(new Foo);
     * // => [1, 2, 3] (iteration order is not guaranteed)
     */
    function valuesIn(object) {
      return baseValues(object, keysIn(object));
    }

    /*------------------------------------------------------------------------*/

    /**
     * Produces a random number between `min` and `max` (inclusive). If only one
     * argument is provided a number between `0` and the given number is returned.
     * If `floating` is `true`, or either `min` or `max` are floats, a floating-point
     * number is returned instead of an integer.
     *
     * @static
     * @memberOf _
     * @category Number
     * @param {number} [min=0] The minimum possible value.
     * @param {number} [max=1] The maximum possible value.
     * @param {boolean} [floating] Specify returning a floating-point number.
     * @returns {number} Returns the random number.
     * @example
     *
     * _.random(0, 5);
     * // => an integer between 0 and 5
     *
     * _.random(5);
     * // => also an integer between 0 and 5
     *
     * _.random(5, true);
     * // => a floating-point number between 0 and 5
     *
     * _.random(1.2, 5.2);
     * // => a floating-point number between 1.2 and 5.2
     */
    function random(min, max, floating) {
      if (floating && isIterateeCall(min, max, floating)) {
        max = floating = null;
      }
      var noMin = min == null,
          noMax = max == null;

      if (floating == null) {
        if (noMax && typeof min == 'boolean') {
          floating = min;
          min = 1;
        }
        else if (typeof max == 'boolean') {
          floating = max;
          noMax = true;
        }
      }
      if (noMin && noMax) {
        max = 1;
        noMax = false;
      }
      min = +min || 0;
      if (noMax) {
        max = min;
        min = 0;
      } else {
        max = +max || 0;
      }
      if (floating || min % 1 || max % 1) {
        var rand = nativeRandom();
        return nativeMin(min + (rand * (max - min + parseFloat('1e-' + ((rand + '').length - 1)))), max);
      }
      return baseRandom(min, max);
    }

    /*------------------------------------------------------------------------*/

    /**
     * Converts `string` to camel case.
     * See [Wikipedia](https://en.wikipedia.org/wiki/CamelCase) for more details.
     *
     * @static
     * @memberOf _
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the camel cased string.
     * @example
     *
     * _.camelCase('Foo Bar');
     * // => 'fooBar'
     *
     * _.camelCase('--foo-bar');
     * // => 'fooBar'
     *
     * _.camelCase('__foo_bar__');
     * // => 'fooBar'
     */
    var camelCase = createCompounder(function(result, word, index) {
      word = word.toLowerCase();
      return result + (index ? (word.charAt(0).toUpperCase() + word.slice(1)) : word);
    });

    /**
     * Capitalizes the first character of `string`.
     *
     * @static
     * @memberOf _
     * @category String
     * @param {string} [string=''] The string to capitalize.
     * @returns {string} Returns the capitalized string.
     * @example
     *
     * _.capitalize('fred');
     * // => 'Fred'
     */
    function capitalize(string) {
      string = baseToString(string);
      return string && (string.charAt(0).toUpperCase() + string.slice(1));
    }

    /**
     * Deburrs `string` by converting latin-1 supplementary letters to basic latin letters.
     * See [Wikipedia](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)
     * for more details.
     *
     * @static
     * @memberOf _
     * @category String
     * @param {string} [string=''] The string to deburr.
     * @returns {string} Returns the deburred string.
     * @example
     *
     * _.deburr('déjà vu');
     * // => 'deja vu'
     */
    function deburr(string) {
      string = baseToString(string);
      return string && string.replace(reLatin1, deburrLetter);
    }

    /**
     * Checks if `string` ends with the given target string.
     *
     * @static
     * @memberOf _
     * @category String
     * @param {string} [string=''] The string to search.
     * @param {string} [target] The string to search for.
     * @param {number} [position=string.length] The position to search from.
     * @returns {boolean} Returns `true` if `string` ends with `target`, else `false`.
     * @example
     *
     * _.endsWith('abc', 'c');
     * // => true
     *
     * _.endsWith('abc', 'b');
     * // => false
     *
     * _.endsWith('abc', 'b', 2);
     * // => true
     */
    function endsWith(string, target, position) {
      string = baseToString(string);
      target = (target + '');

      var length = string.length;
      position = (typeof position == 'undefined' ? length : nativeMin(position < 0 ? 0 : (+position || 0), length)) - target.length;
      return position >= 0 && string.indexOf(target, position) == position;
    }

    /**
     * Converts the characters "&", "<", ">", '"', "'", and '`', in `string` to
     * their corresponding HTML entities.
     *
     * **Note:** No other characters are escaped. To escape additional characters
     * use a third-party library like [_he_](https://mths.be/he).
     *
     * Though the ">" character is escaped for symmetry, characters like
     * ">" and "/" don't require escaping in HTML and have no special meaning
     * unless they're part of a tag or unquoted attribute value.
     * See [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)
     * (under "semi-related fun fact") for more details.
     *
     * Backticks are escaped because in Internet Explorer < 9, they can break out
     * of attribute values or HTML comments. See [#102](https://html5sec.org/#102),
     * [#108](https://html5sec.org/#108), and [#133](https://html5sec.org/#133) of
     * the [HTML5 Security Cheatsheet](https://html5sec.org/) for more details.
     *
     * When working with HTML you should always quote attribute values to reduce
     * XSS vectors. See [Ryan Grove's article](http://wonko.com/post/html-escaping)
     * for more details.
     *
     * @static
     * @memberOf _
     * @category String
     * @param {string} [string=''] The string to escape.
     * @returns {string} Returns the escaped string.
     * @example
     *
     * _.escape('fred, barney, & pebbles');
     * // => 'fred, barney, &amp; pebbles'
     */
    function escape(string) {
      // Reset `lastIndex` because in IE < 9 `String#replace` does not.
      string = baseToString(string);
      return (string && reHasUnescapedHtml.test(string))
        ? string.replace(reUnescapedHtml, escapeHtmlChar)
        : string;
    }

    /**
     * Escapes the `RegExp` special characters "\", "^", "$", ".", "|", "?", "*",
     * "+", "(", ")", "[", "]", "{" and "}" in `string`.
     *
     * @static
     * @memberOf _
     * @category String
     * @param {string} [string=''] The string to escape.
     * @returns {string} Returns the escaped string.
     * @example
     *
     * _.escapeRegExp('[lodash](https://lodash.com/)');
     * // => '\[lodash\]\(https://lodash\.com/\)'
     */
    function escapeRegExp(string) {
      string = baseToString(string);
      return (string && reHasRegExpChars.test(string))
        ? string.replace(reRegExpChars, '\\$&')
        : string;
    }

    /**
     * Converts `string` to kebab case (a.k.a. spinal case).
     * See [Wikipedia](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles) for
     * more details.
     *
     * @static
     * @memberOf _
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the kebab cased string.
     * @example
     *
     * _.kebabCase('Foo Bar');
     * // => 'foo-bar'
     *
     * _.kebabCase('fooBar');
     * // => 'foo-bar'
     *
     * _.kebabCase('__foo_bar__');
     * // => 'foo-bar'
     */
    var kebabCase = createCompounder(function(result, word, index) {
      return result + (index ? '-' : '') + word.toLowerCase();
    });

    /**
     * Pads `string` on the left and right sides if it is shorter then the given
     * padding length. The `chars` string may be truncated if the number of padding
     * characters can't be evenly divided by the padding length.
     *
     * @static
     * @memberOf _
     * @category String
     * @param {string} [string=''] The string to pad.
     * @param {number} [length=0] The padding length.
     * @param {string} [chars=' '] The string used as padding.
     * @returns {string} Returns the padded string.
     * @example
     *
     * _.pad('abc', 8);
     * // => '  abc   '
     *
     * _.pad('abc', 8, '_-');
     * // => '_-abc_-_'
     *
     * _.pad('abc', 3);
     * // => 'abc'
     */
    function pad(string, length, chars) {
      string = baseToString(string);
      length = +length;

      var strLength = string.length;
      if (strLength >= length || !nativeIsFinite(length)) {
        return string;
      }
      var mid = (length - strLength) / 2,
          leftLength = floor(mid),
          rightLength = ceil(mid);

      chars = createPad('', rightLength, chars);
      return chars.slice(0, leftLength) + string + chars;
    }

    /**
     * Pads `string` on the left side if it is shorter then the given padding
     * length. The `chars` string may be truncated if the number of padding
     * characters exceeds the padding length.
     *
     * @static
     * @memberOf _
     * @category String
     * @param {string} [string=''] The string to pad.
     * @param {number} [length=0] The padding length.
     * @param {string} [chars=' '] The string used as padding.
     * @returns {string} Returns the padded string.
     * @example
     *
     * _.padLeft('abc', 6);
     * // => '   abc'
     *
     * _.padLeft('abc', 6, '_-');
     * // => '_-_abc'
     *
     * _.padLeft('abc', 3);
     * // => 'abc'
     */
    function padLeft(string, length, chars) {
      string = baseToString(string);
      return string && (createPad(string, length, chars) + string);
    }

    /**
     * Pads `string` on the right side if it is shorter then the given padding
     * length. The `chars` string may be truncated if the number of padding
     * characters exceeds the padding length.
     *
     * @static
     * @memberOf _
     * @category String
     * @param {string} [string=''] The string to pad.
     * @param {number} [length=0] The padding length.
     * @param {string} [chars=' '] The string used as padding.
     * @returns {string} Returns the padded string.
     * @example
     *
     * _.padRight('abc', 6);
     * // => 'abc   '
     *
     * _.padRight('abc', 6, '_-');
     * // => 'abc_-_'
     *
     * _.padRight('abc', 3);
     * // => 'abc'
     */
    function padRight(string, length, chars) {
      string = baseToString(string);
      return string && (string + createPad(string, length, chars));
    }

    /**
     * Converts `string` to an integer of the specified radix. If `radix` is
     * `undefined` or `0`, a `radix` of `10` is used unless `value` is a hexadecimal,
     * in which case a `radix` of `16` is used.
     *
     * **Note:** This method aligns with the ES5 implementation of `parseInt`.
     * See the [ES5 spec](https://es5.github.io/#E) for more details.
     *
     * @static
     * @memberOf _
     * @category String
     * @param {string} string The string to convert.
     * @param {number} [radix] The radix to interpret `value` by.
     * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
     * @returns {number} Returns the converted integer.
     * @example
     *
     * _.parseInt('08');
     * // => 8
     *
     * _.map(['6', '08', '10'], _.parseInt);
     * // => [6, 8, 10]
     */
    function parseInt(string, radix, guard) {
      if (guard && isIterateeCall(string, radix, guard)) {
        radix = 0;
      }
      return nativeParseInt(string, radix);
    }
    // Fallback for environments with pre-ES5 implementations.
    if (nativeParseInt(whitespace + '08') != 8) {
      parseInt = function(string, radix, guard) {
        // Firefox < 21 and Opera < 15 follow ES3 for `parseInt`.
        // Chrome fails to trim leading <BOM> whitespace characters.
        // See https://code.google.com/p/v8/issues/detail?id=3109 for more details.
        if (guard ? isIterateeCall(string, radix, guard) : radix == null) {
          radix = 0;
        } else if (radix) {
          radix = +radix;
        }
        string = trim(string);
        return nativeParseInt(string, radix || (reHexPrefix.test(string) ? 16 : 10));
      };
    }

    /**
     * Repeats the given string `n` times.
     *
     * @static
     * @memberOf _
     * @category String
     * @param {string} [string=''] The string to repeat.
     * @param {number} [n=0] The number of times to repeat the string.
     * @returns {string} Returns the repeated string.
     * @example
     *
     * _.repeat('*', 3);
     * // => '***'
     *
     * _.repeat('abc', 2);
     * // => 'abcabc'
     *
     * _.repeat('abc', 0);
     * // => ''
     */
    function repeat(string, n) {
      var result = '';
      string = baseToString(string);
      n = +n;
      if (n < 1 || !string || !nativeIsFinite(n)) {
        return result;
      }
      // Leverage the exponentiation by squaring algorithm for a faster repeat.
      // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.
      do {
        if (n % 2) {
          result += string;
        }
        n = floor(n / 2);
        string += string;
      } while (n);

      return result;
    }

    /**
     * Converts `string` to snake case.
     * See [Wikipedia](https://en.wikipedia.org/wiki/Snake_case) for more details.
     *
     * @static
     * @memberOf _
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the snake cased string.
     * @example
     *
     * _.snakeCase('Foo Bar');
     * // => 'foo_bar'
     *
     * _.snakeCase('fooBar');
     * // => 'foo_bar'
     *
     * _.snakeCase('--foo-bar');
     * // => 'foo_bar'
     */
    var snakeCase = createCompounder(function(result, word, index) {
      return result + (index ? '_' : '') + word.toLowerCase();
    });

    /**
     * Converts `string` to start case.
     * See [Wikipedia](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage)
     * for more details.
     *
     * @static
     * @memberOf _
     * @category String
     * @param {string} [string=''] The string to convert.
     * @returns {string} Returns the start cased string.
     * @example
     *
     * _.startCase('--foo-bar');
     * // => 'Foo Bar'
     *
     * _.startCase('fooBar');
     * // => 'Foo Bar'
     *
     * _.startCase('__foo_bar__');
     * // => 'Foo Bar'
     */
    var startCase = createCompounder(function(result, word, index) {
      return result + (index ? ' ' : '') + (word.charAt(0).toUpperCase() + word.slice(1));
    });

    /**
     * Checks if `string` starts with the given target string.
     *
     * @static
     * @memberOf _
     * @category String
     * @param {string} [string=''] The string to search.
     * @param {string} [target] The string to search for.
     * @param {number} [position=0] The position to search from.
     * @returns {boolean} Returns `true` if `string` starts with `target`, else `false`.
     * @example
     *
     * _.startsWith('abc', 'a');
     * // => true
     *
     * _.startsWith('abc', 'b');
     * // => false
     *
     * _.startsWith('abc', 'b', 1);
     * // => true
     */
    function startsWith(string, target, position) {
      string = baseToString(string);
      position = position == null ? 0 : nativeMin(position < 0 ? 0 : (+position || 0), string.length);
      return string.lastIndexOf(target, position) == position;
    }

    /**
     * Creates a compiled template function that can interpolate data properties
     * in "interpolate" delimiters, HTML-escape interpolated data properties in
     * "escape" delimiters, and execute JavaScript in "evaluate" delimiters. Data
     * properties may be accessed as free variables in the template. If a setting
     * object is provided it takes precedence over `_.templateSettings` values.
     *
     * **Note:** In the development build `_.template` utilizes sourceURLs for easier debugging.
     * See the [HTML5 Rocks article on sourcemaps](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)
     * for more details.
     *
     * For more information on precompiling templates see
     * [lodash's custom builds documentation](https://lodash.com/custom-builds).
     *
     * For more information on Chrome extension sandboxes see
     * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval).
     *
     * @static
     * @memberOf _
     * @category String
     * @param {string} [string=''] The template string.
     * @param {Object} [options] The options object.
     * @param {RegExp} [options.escape] The HTML "escape" delimiter.
     * @param {RegExp} [options.evaluate] The "evaluate" delimiter.
     * @param {Object} [options.imports] An object to import into the template as free variables.
     * @param {RegExp} [options.interpolate] The "interpolate" delimiter.
     * @param {string} [options.sourceURL] The sourceURL of the template's compiled source.
     * @param {string} [options.variable] The data object variable name.
     * @param- {Object} [otherOptions] Enables the legacy `options` param signature.
     * @returns {Function} Returns the compiled template function.
     * @example
     *
     * // using the "interpolate" delimiter to create a compiled template
     * var compiled = _.template('hello <%= user %>!');
     * compiled({ 'user': 'fred' });
     * // => 'hello fred!'
     *
     * // using the HTML "escape" delimiter to escape data property values
     * var compiled = _.template('<b><%- value %></b>');
     * compiled({ 'value': '<script>' });
     * // => '<b>&lt;script&gt;</b>'
     *
     * // using the "evaluate" delimiter to execute JavaScript and generate HTML
     * var compiled = _.template('<% _.forEach(users, function(user) { %><li><%- user %></li><% }); %>');
     * compiled({ 'users': ['fred', 'barney'] });
     * // => '<li>fred</li><li>barney</li>'
     *
     * // using the internal `print` function in "evaluate" delimiters
     * var compiled = _.template('<% print("hello " + user); %>!');
     * compiled({ 'user': 'barney' });
     * // => 'hello barney!'
     *
     * // using the ES delimiter as an alternative to the default "interpolate" delimiter
     * var compiled = _.template('hello ${ user }!');
     * compiled({ 'user': 'pebbles' });
     * // => 'hello pebbles!'
     *
     * // using custom template delimiters
     * _.templateSettings.interpolate = /{{([\s\S]+?)}}/g;
     * var compiled = _.template('hello {{ user }}!');
     * compiled({ 'user': 'mustache' });
     * // => 'hello mustache!'
     *
     * // using backslashes to treat delimiters as plain text
     * var compiled = _.template('<%= "\\<%- value %\\>" %>');
     * compiled({ 'value': 'ignored' });
     * // => '<%- value %>'
     *
     * // using the `imports` option to import `jQuery` as `jq`
     * var text = '<% jq.each(users, function(user) { %><li><%- user %></li><% }); %>';
     * var compiled = _.template(text, { 'imports': { 'jq': jQuery } });
     * compiled({ 'users': ['fred', 'barney'] });
     * // => '<li>fred</li><li>barney</li>'
     *
     * // using the `sourceURL` option to specify a custom sourceURL for the template
     * var compiled = _.template('hello <%= user %>!', { 'sourceURL': '/basic/greeting.jst' });
     * compiled(data);
     * // => find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector
     *
     * // using the `variable` option to ensure a with-statement isn't used in the compiled template
     * var compiled = _.template('hi <%= data.user %>!', { 'variable': 'data' });
     * compiled.source;
     * // => function(data) {
     *   var __t, __p = '';
     *   __p += 'hi ' + ((__t = ( data.user )) == null ? '' : __t) + '!';
     *   return __p;
     * }
     *
     * // using the `source` property to inline compiled templates for meaningful
     * // line numbers in error messages and a stack trace
     * fs.writeFileSync(path.join(cwd, 'jst.js'), '\
     *   var JST = {\
     *     "main": ' + _.template(mainText).source + '\
     *   };\
     * ');
     */
    function template(string, options, otherOptions) {
      // Based on John Resig's `tmpl` implementation (http://ejohn.org/blog/javascript-micro-templating/)
      // and Laura Doktorova's doT.js (https://github.com/olado/doT).
      var settings = lodash.templateSettings;

      if (otherOptions && isIterateeCall(string, options, otherOptions)) {
        options = otherOptions = null;
      }
      string = baseToString(string);
      options = baseAssign(baseAssign({}, otherOptions || options), settings, assignOwnDefaults);

      var imports = baseAssign(baseAssign({}, options.imports), settings.imports, assignOwnDefaults),
          importsKeys = keys(imports),
          importsValues = baseValues(imports, importsKeys);

      var isEscaping,
          isEvaluating,
          index = 0,
          interpolate = options.interpolate || reNoMatch,
          source = "__p += '";

      // Compile the regexp to match each delimiter.
      var reDelimiters = RegExp(
        (options.escape || reNoMatch).source + '|' +
        interpolate.source + '|' +
        (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' +
        (options.evaluate || reNoMatch).source + '|$'
      , 'g');

      // Use a sourceURL for easier debugging.
      var sourceURL = '//# sourceURL=' +
        ('sourceURL' in options
          ? options.sourceURL
          : ('lodash.templateSources[' + (++templateCounter) + ']')
        ) + '\n';

      string.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) {
        interpolateValue || (interpolateValue = esTemplateValue);

        // Escape characters that can't be included in string literals.
        source += string.slice(index, offset).replace(reUnescapedString, escapeStringChar);

        // Replace delimiters with snippets.
        if (escapeValue) {
          isEscaping = true;
          source += "' +\n__e(" + escapeValue + ") +\n'";
        }
        if (evaluateValue) {
          isEvaluating = true;
          source += "';\n" + evaluateValue + ";\n__p += '";
        }
        if (interpolateValue) {
          source += "' +\n((__t = (" + interpolateValue + ")) == null ? '' : __t) +\n'";
        }
        index = offset + match.length;

        // The JS engine embedded in Adobe products requires returning the `match`
        // string in order to produce the correct `offset` value.
        return match;
      });

      source += "';\n";

      // If `variable` is not specified wrap a with-statement around the generated
      // code to add the data object to the top of the scope chain.
      var variable = options.variable;
      if (!variable) {
        source = 'with (obj) {\n' + source + '\n}\n';
      }
      // Cleanup code by stripping empty strings.
      source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source)
        .replace(reEmptyStringMiddle, '$1')
        .replace(reEmptyStringTrailing, '$1;');

      // Frame code as the function body.
      source = 'function(' + (variable || 'obj') + ') {\n' +
        (variable
          ? ''
          : 'obj || (obj = {});\n'
        ) +
        "var __t, __p = ''" +
        (isEscaping
           ? ', __e = _.escape'
           : ''
        ) +
        (isEvaluating
          ? ', __j = Array.prototype.join;\n' +
            "function print() { __p += __j.call(arguments, '') }\n"
          : ';\n'
        ) +
        source +
        'return __p\n}';

      var result = attempt(function() {
        return Function(importsKeys, sourceURL + 'return ' + source).apply(undefined, importsValues);
      });

      // Provide the compiled function's source by its `toString` method or
      // the `source` property as a convenience for inlining compiled templates.
      result.source = source;
      if (isError(result)) {
        throw result;
      }
      return result;
    }

    /**
     * Removes leading and trailing whitespace or specified characters from `string`.
     *
     * @static
     * @memberOf _
     * @category String
     * @param {string} [string=''] The string to trim.
     * @param {string} [chars=whitespace] The characters to trim.
     * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
     * @returns {string} Returns the trimmed string.
     * @example
     *
     * _.trim('  abc  ');
     * // => 'abc'
     *
     * _.trim('-_-abc-_-', '_-');
     * // => 'abc'
     *
     * _.map(['  foo  ', '  bar  '], _.trim);
     * // => ['foo', 'bar]
     */
    function trim(string, chars, guard) {
      var value = string;
      string = baseToString(string);
      if (!string) {
        return string;
      }
      if (guard ? isIterateeCall(value, chars, guard) : chars == null) {
        return string.slice(trimmedLeftIndex(string), trimmedRightIndex(string) + 1);
      }
      chars = (chars + '');
      return string.slice(charsLeftIndex(string, chars), charsRightIndex(string, chars) + 1);
    }

    /**
     * Removes leading whitespace or specified characters from `string`.
     *
     * @static
     * @memberOf _
     * @category String
     * @param {string} [string=''] The string to trim.
     * @param {string} [chars=whitespace] The characters to trim.
     * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
     * @returns {string} Returns the trimmed string.
     * @example
     *
     * _.trimLeft('  abc  ');
     * // => 'abc  '
     *
     * _.trimLeft('-_-abc-_-', '_-');
     * // => 'abc-_-'
     */
    function trimLeft(string, chars, guard) {
      var value = string;
      string = baseToString(string);
      if (!string) {
        return string;
      }
      if (guard ? isIterateeCall(value, chars, guard) : chars == null) {
        return string.slice(trimmedLeftIndex(string));
      }
      return string.slice(charsLeftIndex(string, (chars + '')));
    }

    /**
     * Removes trailing whitespace or specified characters from `string`.
     *
     * @static
     * @memberOf _
     * @category String
     * @param {string} [string=''] The string to trim.
     * @param {string} [chars=whitespace] The characters to trim.
     * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
     * @returns {string} Returns the trimmed string.
     * @example
     *
     * _.trimRight('  abc  ');
     * // => '  abc'
     *
     * _.trimRight('-_-abc-_-', '_-');
     * // => '-_-abc'
     */
    function trimRight(string, chars, guard) {
      var value = string;
      string = baseToString(string);
      if (!string) {
        return string;
      }
      if (guard ? isIterateeCall(value, chars, guard) : chars == null) {
        return string.slice(0, trimmedRightIndex(string) + 1);
      }
      return string.slice(0, charsRightIndex(string, (chars + '')) + 1);
    }

    /**
     * Truncates `string` if it is longer than the given maximum string length.
     * The last characters of the truncated string are replaced with the omission
     * string which defaults to "...".
     *
     * @static
     * @memberOf _
     * @category String
     * @param {string} [string=''] The string to truncate.
     * @param {Object|number} [options] The options object or maximum string length.
     * @param {number} [options.length=30] The maximum string length.
     * @param {string} [options.omission='...'] The string to indicate text is omitted.
     * @param {RegExp|string} [options.separator] The separator pattern to truncate to.
     * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
     * @returns {string} Returns the truncated string.
     * @example
     *
     * _.trunc('hi-diddly-ho there, neighborino');
     * // => 'hi-diddly-ho there, neighbo...'
     *
     * _.trunc('hi-diddly-ho there, neighborino', 24);
     * // => 'hi-diddly-ho there, n...'
     *
     * _.trunc('hi-diddly-ho there, neighborino', { 'length': 24, 'separator': ' ' });
     * // => 'hi-diddly-ho there,...'
     *
     * _.trunc('hi-diddly-ho there, neighborino', { 'length': 24, 'separator': /,? +/ });
     * //=> 'hi-diddly-ho there...'
     *
     * _.trunc('hi-diddly-ho there, neighborino', { 'omission': ' [...]' });
     * // => 'hi-diddly-ho there, neig [...]'
     */
    function trunc(string, options, guard) {
      if (guard && isIterateeCall(string, options, guard)) {
        options = null;
      }
      var length = DEFAULT_TRUNC_LENGTH,
          omission = DEFAULT_TRUNC_OMISSION;

      if (options != null) {
        if (isObject(options)) {
          var separator = 'separator' in options ? options.separator : separator;
          length = 'length' in options ? +options.length || 0 : length;
          omission = 'omission' in options ? baseToString(options.omission) : omission;
        } else {
          length = +options || 0;
        }
      }
      string = baseToString(string);
      if (length >= string.length) {
        return string;
      }
      var end = length - omission.length;
      if (end < 1) {
        return omission;
      }
      var result = string.slice(0, end);
      if (separator == null) {
        return result + omission;
      }
      if (isRegExp(separator)) {
        if (string.slice(end).search(separator)) {
          var match,
              newEnd,
              substring = string.slice(0, end);

          if (!separator.global) {
            separator = RegExp(separator.source, (reFlags.exec(separator) || '') + 'g');
          }
          separator.lastIndex = 0;
          while ((match = separator.exec(substring))) {
            newEnd = match.index;
          }
          result = result.slice(0, newEnd == null ? end : newEnd);
        }
      } else if (string.indexOf(separator, end) != end) {
        var index = result.lastIndexOf(separator);
        if (index > -1) {
          result = result.slice(0, index);
        }
      }
      return result + omission;
    }

    /**
     * The inverse of `_.escape`; this method converts the HTML entities
     * `&amp;`, `&lt;`, `&gt;`, `&quot;`, `&#39;`, and `&#96;` in `string` to their
     * corresponding characters.
     *
     * **Note:** No other HTML entities are unescaped. To unescape additional HTML
     * entities use a third-party library like [_he_](https://mths.be/he).
     *
     * @static
     * @memberOf _
     * @category String
     * @param {string} [string=''] The string to unescape.
     * @returns {string} Returns the unescaped string.
     * @example
     *
     * _.unescape('fred, barney, &amp; pebbles');
     * // => 'fred, barney, & pebbles'
     */
    function unescape(string) {
      string = baseToString(string);
      return (string && reHasEscapedHtml.test(string))
        ? string.replace(reEscapedHtml, unescapeHtmlChar)
        : string;
    }

    /**
     * Splits `string` into an array of its words.
     *
     * @static
     * @memberOf _
     * @category String
     * @param {string} [string=''] The string to inspect.
     * @param {RegExp|string} [pattern] The pattern to match words.
     * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
     * @returns {Array} Returns the words of `string`.
     * @example
     *
     * _.words('fred, barney, & pebbles');
     * // => ['fred', 'barney', 'pebbles']
     *
     * _.words('fred, barney, & pebbles', /[^, ]+/g);
     * // => ['fred', 'barney', '&', 'pebbles']
     */
    function words(string, pattern, guard) {
      if (guard && isIterateeCall(string, pattern, guard)) {
        pattern = null;
      }
      string = baseToString(string);
      return string.match(pattern || reWords) || [];
    }

    /*------------------------------------------------------------------------*/

    /**
     * Attempts to invoke `func`, returning either the result or the caught error
     * object. Any additional arguments are provided to `func` when it is invoked.
     *
     * @static
     * @memberOf _
     * @category Utility
     * @param {*} func The function to attempt.
     * @returns {*} Returns the `func` result or error object.
     * @example
     *
     * // avoid throwing errors for invalid selectors
     * var elements = _.attempt(function(selector) {
     *   return document.querySelectorAll(selector);
     * }, '>_>');
     *
     * if (_.isError(elements)) {
     *   elements = [];
     * }
     */
    function attempt(func) {
      try {
        return func.apply(undefined, baseSlice(arguments, 1));
      } catch(e) {
        return isError(e) ? e : new Error(e);
      }
    }

    /**
     * Creates a function that invokes `func` with the `this` binding of `thisArg`
     * and arguments of the created function. If `func` is a property name the
     * created callback returns the property value for a given element. If `func`
     * is an object the created callback returns `true` for elements that contain
     * the equivalent object properties, otherwise it returns `false`.
     *
     * @static
     * @memberOf _
     * @alias iteratee
     * @category Utility
     * @param {*} [func=_.identity] The value to convert to a callback.
     * @param {*} [thisArg] The `this` binding of `func`.
     * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
     * @returns {Function} Returns the callback.
     * @example
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36 },
     *   { 'user': 'fred',   'age': 40 }
     * ];
     *
     * // wrap to create custom callback shorthands
     * _.callback = _.wrap(_.callback, function(callback, func, thisArg) {
     *   var match = /^(.+?)__([gl]t)(.+)$/.exec(func);
     *   if (!match) {
     *     return callback(func, thisArg);
     *   }
     *   return function(object) {
     *     return match[2] == 'gt' ? object[match[1]] > match[3] : object[match[1]] < match[3];
     *   };
     * });
     *
     * _.filter(users, 'age__gt36');
     * // => [{ 'user': 'fred', 'age': 40 }]
     */
    function callback(func, thisArg, guard) {
      if (guard && isIterateeCall(func, thisArg, guard)) {
        thisArg = null;
      }
      return isObjectLike(func)
        ? matches(func)
        : baseCallback(func, thisArg);
    }

    /**
     * Creates a function that returns `value`.
     *
     * @static
     * @memberOf _
     * @category Utility
     * @param {*} value The value to return from the new function.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var object = { 'user': 'fred' };
     * var getter = _.constant(object);
     * getter() === object;
     * // => true
     */
    function constant(value) {
      return function() {
        return value;
      };
    }

    /**
     * This method returns the first argument provided to it.
     *
     * @static
     * @memberOf _
     * @category Utility
     * @param {*} value Any value.
     * @returns {*} Returns `value`.
     * @example
     *
     * var object = { 'user': 'fred' };
     * _.identity(object) === object;
     * // => true
     */
    function identity(value) {
      return value;
    }

    /**
     * Creates a function which performs a deep comparison between a given object
     * and `source`, returning `true` if the given object has equivalent property
     * values, else `false`.
     *
     * **Note:** This method supports comparing arrays, booleans, `Date` objects,
     * numbers, `Object` objects, regexes, and strings. Objects are compared by
     * their own, not inherited, enumerable properties. For comparing a single
     * own or inherited property value see `_.matchesProperty`.
     *
     * @static
     * @memberOf _
     * @category Utility
     * @param {Object} source The object of property values to match.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var users = [
     *   { 'user': 'barney', 'age': 36, 'active': true },
     *   { 'user': 'fred',   'age': 40, 'active': false }
     * ];
     *
     * _.filter(users, _.matches({ 'age': 40, 'active': false }));
     * // => [{ 'user': 'fred', 'age': 40, 'active': false }]
     */
    function matches(source) {
      return baseMatches(baseClone(source, true));
    }

    /**
     * Creates a function which compares the property value of `key` on a given
     * object to `value`.
     *
     * **Note:** This method supports comparing arrays, booleans, `Date` objects,
     * numbers, `Object` objects, regexes, and strings. Objects are compared by
     * their own, not inherited, enumerable properties.
     *
     * @static
     * @memberOf _
     * @category Utility
     * @param {string} key The key of the property to get.
     * @param {*} value The value to compare.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var users = [
     *   { 'user': 'barney',  'age': 36 },
     *   { 'user': 'fred',    'age': 40 },
     *   { 'user': 'pebbles', 'age': 1 }
     * ];
     *
     * var matchFred = _.matchesProperty('user', 'fred');
     *
     * _.find(users, matchFred);
     * // => { 'user': 'fred', 'age': 40 }
     */
    function matchesProperty(key, value) {
      return baseMatchesProperty(key + '', baseClone(value, true));
    }

    /**
     * Adds all own enumerable function properties of a source object to the
     * destination object. If `object` is a function then methods are added to
     * its prototype as well.
     *
     * @static
     * @memberOf _
     * @category Utility
     * @param {Function|Object} [object=this] object The destination object.
     * @param {Object} source The object of functions to add.
     * @param {Object} [options] The options object.
     * @param {boolean} [options.chain=true] Specify whether the functions added
     *  are chainable.
     * @returns {Function|Object} Returns `object`.
     * @example
     *
     * function vowels(string) {
     *   return _.filter(string, function(v) {
     *     return /[aeiou]/i.test(v);
     *   });
     * }
     *
     * // use `_.runInContext` to avoid potential conflicts (esp. in Node.js)
     * var _ = require('lodash').runInContext();
     *
     * _.mixin({ 'vowels': vowels });
     * _.vowels('fred');
     * // => ['e']
     *
     * _('fred').vowels().value();
     * // => ['e']
     *
     * _.mixin({ 'vowels': vowels }, { 'chain': false });
     * _('fred').vowels();
     * // => ['e']
     */
    function mixin(object, source, options) {
      if (options == null) {
        var isObj = isObject(source),
            props = isObj && keys(source),
            methodNames = props && props.length && baseFunctions(source, props);

        if (!(methodNames ? methodNames.length : isObj)) {
          methodNames = false;
          options = source;
          source = object;
          object = this;
        }
      }
      if (!methodNames) {
        methodNames = baseFunctions(source, keys(source));
      }
      var chain = true,
          index = -1,
          isFunc = isFunction(object),
          length = methodNames.length;

      if (options === false) {
        chain = false;
      } else if (isObject(options) && 'chain' in options) {
        chain = options.chain;
      }
      while (++index < length) {
        var methodName = methodNames[index],
            func = source[methodName];

        object[methodName] = func;
        if (isFunc) {
          object.prototype[methodName] = (function(func) {
            return function() {
              var chainAll = this.__chain__;
              if (chain || chainAll) {
                var result = object(this.__wrapped__);
                (result.__actions__ = arrayCopy(this.__actions__)).push({ 'func': func, 'args': arguments, 'thisArg': object });
                result.__chain__ = chainAll;
                return result;
              }
              var args = [this.value()];
              push.apply(args, arguments);
              return func.apply(object, args);
            };
          }(func));
        }
      }
      return object;
    }

    /**
     * Reverts the `_` variable to its previous value and returns a reference to
     * the `lodash` function.
     *
     * @static
     * @memberOf _
     * @category Utility
     * @returns {Function} Returns the `lodash` function.
     * @example
     *
     * var lodash = _.noConflict();
     */
    function noConflict() {
      context._ = oldDash;
      return this;
    }

    /**
     * A no-operation function.
     *
     * @static
     * @memberOf _
     * @category Utility
     * @example
     *
     * var object = { 'user': 'fred' };
     * _.noop(object) === undefined;
     * // => true
     */
    function noop() {
      // No operation performed.
    }

    /**
     * Creates a function which returns the property value of `key` on a given object.
     *
     * @static
     * @memberOf _
     * @category Utility
     * @param {string} key The key of the property to get.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var users = [
     *   { 'user': 'fred' },
     *   { 'user': 'barney' }
     * ];
     *
     * var getName = _.property('user');
     *
     * _.map(users, getName);
     * // => ['fred', barney']
     *
     * _.pluck(_.sortBy(users, getName), 'user');
     * // => ['barney', 'fred']
     */
    function property(key) {
      return baseProperty(key + '');
    }

    /**
     * The inverse of `_.property`; this method creates a function which returns
     * the property value of a given key on `object`.
     *
     * @static
     * @memberOf _
     * @category Utility
     * @param {Object} object The object to inspect.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var object = { 'user': 'fred', 'age': 40, 'active': true };
     * _.map(['active', 'user'], _.propertyOf(object));
     * // => [true, 'fred']
     *
     * var object = { 'a': 3, 'b': 1, 'c': 2 };
     * _.sortBy(['a', 'b', 'c'], _.propertyOf(object));
     * // => ['b', 'c', 'a']
     */
    function propertyOf(object) {
      return function(key) {
        return object == null ? undefined : object[key];
      };
    }

    /**
     * Creates an array of numbers (positive and/or negative) progressing from
     * `start` up to, but not including, `end`. If `start` is less than `end` a
     * zero-length range is created unless a negative `step` is specified.
     *
     * @static
     * @memberOf _
     * @category Utility
     * @param {number} [start=0] The start of the range.
     * @param {number} end The end of the range.
     * @param {number} [step=1] The value to increment or decrement by.
     * @returns {Array} Returns the new array of numbers.
     * @example
     *
     * _.range(4);
     * // => [0, 1, 2, 3]
     *
     * _.range(1, 5);
     * // => [1, 2, 3, 4]
     *
     * _.range(0, 20, 5);
     * // => [0, 5, 10, 15]
     *
     * _.range(0, -4, -1);
     * // => [0, -1, -2, -3]
     *
     * _.range(1, 4, 0);
     * // => [1, 1, 1]
     *
     * _.range(0);
     * // => []
     */
    function range(start, end, step) {
      if (step && isIterateeCall(start, end, step)) {
        end = step = null;
      }
      start = +start || 0;
      step = step == null ? 1 : (+step || 0);

      if (end == null) {
        end = start;
        start = 0;
      } else {
        end = +end || 0;
      }
      // Use `Array(length)` so engines like Chakra and V8 avoid slower modes.
      // See https://youtu.be/XAqIpGU8ZZk#t=17m25s for more details.
      var index = -1,
          length = nativeMax(ceil((end - start) / (step || 1)), 0),
          result = Array(length);

      while (++index < length) {
        result[index] = start;
        start += step;
      }
      return result;
    }

    /**
     * Invokes the iteratee function `n` times, returning an array of the results
     * of each invocation. The `iteratee` is bound to `thisArg` and invoked with
     * one argument; (index).
     *
     * @static
     * @memberOf _
     * @category Utility
     * @param {number} n The number of times to invoke `iteratee`.
     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
     * @param {*} [thisArg] The `this` binding of `iteratee`.
     * @returns {Array} Returns the array of results.
     * @example
     *
     * var diceRolls = _.times(3, _.partial(_.random, 1, 6, false));
     * // => [3, 6, 4]
     *
     * _.times(3, function(n) { mage.castSpell(n); });
     * // => invokes `mage.castSpell(n)` three times with `n` of `0`, `1`, and `2` respectively
     *
     * _.times(3, function(n) { this.cast(n); }, mage);
     * // => also invokes `mage.castSpell(n)` three times
     */
    function times(n, iteratee, thisArg) {
      n = +n;

      // Exit early to avoid a JSC JIT bug in Safari 8
      // where `Array(0)` is treated as `Array(1)`.
      if (n < 1 || !nativeIsFinite(n)) {
        return [];
      }
      var index = -1,
          result = Array(nativeMin(n, MAX_ARRAY_LENGTH));

      iteratee = bindCallback(iteratee, thisArg, 1);
      while (++index < n) {
        if (index < MAX_ARRAY_LENGTH) {
          result[index] = iteratee(index);
        } else {
          iteratee(index);
        }
      }
      return result;
    }

    /**
     * Generates a unique ID. If `prefix` is provided the ID is appended to it.
     *
     * @static
     * @memberOf _
     * @category Utility
     * @param {string} [prefix] The value to prefix the ID with.
     * @returns {string} Returns the unique ID.
     * @example
     *
     * _.uniqueId('contact_');
     * // => 'contact_104'
     *
     * _.uniqueId();
     * // => '105'
     */
    function uniqueId(prefix) {
      var id = ++idCounter;
      return baseToString(prefix) + id;
    }

    /*------------------------------------------------------------------------*/

    // Ensure `new LodashWrapper` is an instance of `lodash`.
    LodashWrapper.prototype = baseCreate(lodash.prototype);

    // Ensure `new LazyWraper` is an instance of `LodashWrapper`
    LazyWrapper.prototype = baseCreate(LodashWrapper.prototype);
    LazyWrapper.prototype.constructor = LazyWrapper;

    // Add functions to the `Map` cache.
    MapCache.prototype['delete'] = mapDelete;
    MapCache.prototype.get = mapGet;
    MapCache.prototype.has = mapHas;
    MapCache.prototype.set = mapSet;

    // Add functions to the `Set` cache.
    SetCache.prototype.push = cachePush;

    // Assign cache to `_.memoize`.
    memoize.Cache = MapCache;

    // Add functions that return wrapped values when chaining.
    lodash.after = after;
    lodash.ary = ary;
    lodash.assign = assign;
    lodash.at = at;
    lodash.before = before;
    lodash.bind = bind;
    lodash.bindAll = bindAll;
    lodash.bindKey = bindKey;
    lodash.callback = callback;
    lodash.chain = chain;
    lodash.chunk = chunk;
    lodash.compact = compact;
    lodash.constant = constant;
    lodash.countBy = countBy;
    lodash.create = create;
    lodash.curry = curry;
    lodash.curryRight = curryRight;
    lodash.debounce = debounce;
    lodash.defaults = defaults;
    lodash.defer = defer;
    lodash.delay = delay;
    lodash.difference = difference;
    lodash.drop = drop;
    lodash.dropRight = dropRight;
    lodash.dropRightWhile = dropRightWhile;
    lodash.dropWhile = dropWhile;
    lodash.fill = fill;
    lodash.filter = filter;
    lodash.flatten = flatten;
    lodash.flattenDeep = flattenDeep;
    lodash.flow = flow;
    lodash.flowRight = flowRight;
    lodash.forEach = forEach;
    lodash.forEachRight = forEachRight;
    lodash.forIn = forIn;
    lodash.forInRight = forInRight;
    lodash.forOwn = forOwn;
    lodash.forOwnRight = forOwnRight;
    lodash.functions = functions;
    lodash.groupBy = groupBy;
    lodash.indexBy = indexBy;
    lodash.initial = initial;
    lodash.intersection = intersection;
    lodash.invert = invert;
    lodash.invoke = invoke;
    lodash.keys = keys;
    lodash.keysIn = keysIn;
    lodash.map = map;
    lodash.mapValues = mapValues;
    lodash.matches = matches;
    lodash.matchesProperty = matchesProperty;
    lodash.memoize = memoize;
    lodash.merge = merge;
    lodash.mixin = mixin;
    lodash.negate = negate;
    lodash.omit = omit;
    lodash.once = once;
    lodash.pairs = pairs;
    lodash.partial = partial;
    lodash.partialRight = partialRight;
    lodash.partition = partition;
    lodash.pick = pick;
    lodash.pluck = pluck;
    lodash.property = property;
    lodash.propertyOf = propertyOf;
    lodash.pull = pull;
    lodash.pullAt = pullAt;
    lodash.range = range;
    lodash.rearg = rearg;
    lodash.reject = reject;
    lodash.remove = remove;
    lodash.rest = rest;
    lodash.shuffle = shuffle;
    lodash.slice = slice;
    lodash.sortBy = sortBy;
    lodash.sortByAll = sortByAll;
    lodash.spread = spread;
    lodash.take = take;
    lodash.takeRight = takeRight;
    lodash.takeRightWhile = takeRightWhile;
    lodash.takeWhile = takeWhile;
    lodash.tap = tap;
    lodash.throttle = throttle;
    lodash.thru = thru;
    lodash.times = times;
    lodash.toArray = toArray;
    lodash.toPlainObject = toPlainObject;
    lodash.transform = transform;
    lodash.union = union;
    lodash.uniq = uniq;
    lodash.unzip = unzip;
    lodash.values = values;
    lodash.valuesIn = valuesIn;
    lodash.where = where;
    lodash.without = without;
    lodash.wrap = wrap;
    lodash.xor = xor;
    lodash.zip = zip;
    lodash.zipObject = zipObject;

    // Add aliases.
    lodash.backflow = flowRight;
    lodash.collect = map;
    lodash.compose = flowRight;
    lodash.each = forEach;
    lodash.eachRight = forEachRight;
    lodash.extend = assign;
    lodash.iteratee = callback;
    lodash.methods = functions;
    lodash.object = zipObject;
    lodash.select = filter;
    lodash.tail = rest;
    lodash.unique = uniq;

    // Add functions to `lodash.prototype`.
    mixin(lodash, lodash);

    /*------------------------------------------------------------------------*/

    // Add functions that return unwrapped values when chaining.
    lodash.attempt = attempt;
    lodash.camelCase = camelCase;
    lodash.capitalize = capitalize;
    lodash.clone = clone;
    lodash.cloneDeep = cloneDeep;
    lodash.deburr = deburr;
    lodash.endsWith = endsWith;
    lodash.escape = escape;
    lodash.escapeRegExp = escapeRegExp;
    lodash.every = every;
    lodash.find = find;
    lodash.findIndex = findIndex;
    lodash.findKey = findKey;
    lodash.findLast = findLast;
    lodash.findLastIndex = findLastIndex;
    lodash.findLastKey = findLastKey;
    lodash.findWhere = findWhere;
    lodash.first = first;
    lodash.has = has;
    lodash.identity = identity;
    lodash.includes = includes;
    lodash.indexOf = indexOf;
    lodash.isArguments = isArguments;
    lodash.isArray = isArray;
    lodash.isBoolean = isBoolean;
    lodash.isDate = isDate;
    lodash.isElement = isElement;
    lodash.isEmpty = isEmpty;
    lodash.isEqual = isEqual;
    lodash.isError = isError;
    lodash.isFinite = isFinite;
    lodash.isFunction = isFunction;
    lodash.isMatch = isMatch;
    lodash.isNaN = isNaN;
    lodash.isNative = isNative;
    lodash.isNull = isNull;
    lodash.isNumber = isNumber;
    lodash.isObject = isObject;
    lodash.isPlainObject = isPlainObject;
    lodash.isRegExp = isRegExp;
    lodash.isString = isString;
    lodash.isTypedArray = isTypedArray;
    lodash.isUndefined = isUndefined;
    lodash.kebabCase = kebabCase;
    lodash.last = last;
    lodash.lastIndexOf = lastIndexOf;
    lodash.max = max;
    lodash.min = min;
    lodash.noConflict = noConflict;
    lodash.noop = noop;
    lodash.now = now;
    lodash.pad = pad;
    lodash.padLeft = padLeft;
    lodash.padRight = padRight;
    lodash.parseInt = parseInt;
    lodash.random = random;
    lodash.reduce = reduce;
    lodash.reduceRight = reduceRight;
    lodash.repeat = repeat;
    lodash.result = result;
    lodash.runInContext = runInContext;
    lodash.size = size;
    lodash.snakeCase = snakeCase;
    lodash.some = some;
    lodash.sortedIndex = sortedIndex;
    lodash.sortedLastIndex = sortedLastIndex;
    lodash.startCase = startCase;
    lodash.startsWith = startsWith;
    lodash.template = template;
    lodash.trim = trim;
    lodash.trimLeft = trimLeft;
    lodash.trimRight = trimRight;
    lodash.trunc = trunc;
    lodash.unescape = unescape;
    lodash.uniqueId = uniqueId;
    lodash.words = words;

    // Add aliases.
    lodash.all = every;
    lodash.any = some;
    lodash.contains = includes;
    lodash.detect = find;
    lodash.foldl = reduce;
    lodash.foldr = reduceRight;
    lodash.head = first;
    lodash.include = includes;
    lodash.inject = reduce;

    mixin(lodash, (function() {
      var source = {};
      baseForOwn(lodash, function(func, methodName) {
        if (!lodash.prototype[methodName]) {
          source[methodName] = func;
        }
      });
      return source;
    }()), false);

    /*------------------------------------------------------------------------*/

    // Add functions capable of returning wrapped and unwrapped values when chaining.
    lodash.sample = sample;

    lodash.prototype.sample = function(n) {
      if (!this.__chain__ && n == null) {
        return sample(this.value());
      }
      return this.thru(function(value) {
        return sample(value, n);
      });
    };

    /*------------------------------------------------------------------------*/

    /**
     * The semantic version number.
     *
     * @static
     * @memberOf _
     * @type string
     */
    lodash.VERSION = VERSION;

    // Assign default placeholders.
    arrayEach(['bind', 'bindKey', 'curry', 'curryRight', 'partial', 'partialRight'], function(methodName) {
      lodash[methodName].placeholder = lodash;
    });

    // Add `LazyWrapper` methods that accept an `iteratee` value.
    arrayEach(['filter', 'map', 'takeWhile'], function(methodName, index) {
      var isFilter = index == LAZY_FILTER_FLAG,
          isWhile = index == LAZY_WHILE_FLAG;

      LazyWrapper.prototype[methodName] = function(iteratee, thisArg) {
        var result = this.clone(),
            filtered = result.__filtered__,
            iteratees = result.__iteratees__ || (result.__iteratees__ = []);

        result.__filtered__ = filtered || isFilter || (isWhile && result.__dir__ < 0);
        iteratees.push({ 'iteratee': getCallback(iteratee, thisArg, 3), 'type': index });
        return result;
      };
    });

    // Add `LazyWrapper` methods for `_.drop` and `_.take` variants.
    arrayEach(['drop', 'take'], function(methodName, index) {
      var countName = '__' + methodName + 'Count__',
          whileName = methodName + 'While';

      LazyWrapper.prototype[methodName] = function(n) {
        n = n == null ? 1 : nativeMax(floor(n) || 0, 0);

        var result = this.clone();
        if (result.__filtered__) {
          var value = result[countName];
          result[countName] = index ? nativeMin(value, n) : (value + n);
        } else {
          var views = result.__views__ || (result.__views__ = []);
          views.push({ 'size': n, 'type': methodName + (result.__dir__ < 0 ? 'Right' : '') });
        }
        return result;
      };

      LazyWrapper.prototype[methodName + 'Right'] = function(n) {
        return this.reverse()[methodName](n).reverse();
      };

      LazyWrapper.prototype[methodName + 'RightWhile'] = function(predicate, thisArg) {
        return this.reverse()[whileName](predicate, thisArg).reverse();
      };
    });

    // Add `LazyWrapper` methods for `_.first` and `_.last`.
    arrayEach(['first', 'last'], function(methodName, index) {
      var takeName = 'take' + (index ? 'Right' : '');

      LazyWrapper.prototype[methodName] = function() {
        return this[takeName](1).value()[0];
      };
    });

    // Add `LazyWrapper` methods for `_.initial` and `_.rest`.
    arrayEach(['initial', 'rest'], function(methodName, index) {
      var dropName = 'drop' + (index ? '' : 'Right');

      LazyWrapper.prototype[methodName] = function() {
        return this[dropName](1);
      };
    });

    // Add `LazyWrapper` methods for `_.pluck` and `_.where`.
    arrayEach(['pluck', 'where'], function(methodName, index) {
      var operationName = index ? 'filter' : 'map',
          createCallback = index ? baseMatches : baseProperty;

      LazyWrapper.prototype[methodName] = function(value) {
        return this[operationName](createCallback(value));
      };
    });

    LazyWrapper.prototype.compact = function() {
      return this.filter(identity);
    };

    LazyWrapper.prototype.dropWhile = function(iteratee, thisArg) {
      var done;
      iteratee = getCallback(iteratee, thisArg, 3);
      return this.filter(function(value, index, array) {
        return done || (done = !iteratee(value, index, array));
      });
    };

    LazyWrapper.prototype.reject = function(iteratee, thisArg) {
      iteratee = getCallback(iteratee, thisArg, 3);
      return this.filter(function(value, index, array) {
        return !iteratee(value, index, array);
      });
    };

    LazyWrapper.prototype.slice = function(start, end) {
      start = start == null ? 0 : (+start || 0);
      var result = start < 0 ? this.takeRight(-start) : this.drop(start);

      if (typeof end != 'undefined') {
        end = (+end || 0);
        result = end < 0 ? result.dropRight(-end) : result.take(end - start);
      }
      return result;
    };

    LazyWrapper.prototype.toArray = function() {
      return this.drop(0);
    };

    // Add `LazyWrapper` methods to `lodash.prototype`.
    baseForOwn(LazyWrapper.prototype, function(func, methodName) {
      var lodashFunc = lodash[methodName],
          retUnwrapped = /^(?:first|last)$/.test(methodName);

      lodash.prototype[methodName] = function() {
        var value = this.__wrapped__,
            args = arguments,
            chainAll = this.__chain__,
            isHybrid = !!this.__actions__.length,
            isLazy = value instanceof LazyWrapper,
            onlyLazy = isLazy && !isHybrid;

        if (retUnwrapped && !chainAll) {
          return onlyLazy
            ? func.call(value)
            : lodashFunc.call(lodash, this.value());
        }
        var interceptor = function(value) {
          var otherArgs = [value];
          push.apply(otherArgs, args);
          return lodashFunc.apply(lodash, otherArgs);
        };
        if (isLazy || isArray(value)) {
          var wrapper = onlyLazy ? value : new LazyWrapper(this),
              result = func.apply(wrapper, args);

          if (!retUnwrapped && (isHybrid || result.__actions__)) {
            var actions = result.__actions__ || (result.__actions__ = []);
            actions.push({ 'func': thru, 'args': [interceptor], 'thisArg': lodash });
          }
          return new LodashWrapper(result, chainAll);
        }
        return this.thru(interceptor);
      };
    });

    // Add `Array.prototype` functions to `lodash.prototype`.
    arrayEach(['concat', 'join', 'pop', 'push', 'shift', 'sort', 'splice', 'unshift'], function(methodName) {
      var func = arrayProto[methodName],
          chainName = /^(?:push|sort|unshift)$/.test(methodName) ? 'tap' : 'thru',
          retUnwrapped = /^(?:join|pop|shift)$/.test(methodName);

      lodash.prototype[methodName] = function() {
        var args = arguments;
        if (retUnwrapped && !this.__chain__) {
          return func.apply(this.value(), args);
        }
        return this[chainName](function(value) {
          return func.apply(value, args);
        });
      };
    });

    // Add functions to the lazy wrapper.
    LazyWrapper.prototype.clone = lazyClone;
    LazyWrapper.prototype.reverse = lazyReverse;
    LazyWrapper.prototype.value = lazyValue;

    // Add chaining functions to the lodash wrapper.
    lodash.prototype.chain = wrapperChain;
    lodash.prototype.commit = wrapperCommit;
    lodash.prototype.plant = wrapperPlant;
    lodash.prototype.reverse = wrapperReverse;
    lodash.prototype.toString = wrapperToString;
    lodash.prototype.run = lodash.prototype.toJSON = lodash.prototype.valueOf = lodash.prototype.value = wrapperValue;

    // Add function aliases to the lodash wrapper.
    lodash.prototype.collect = lodash.prototype.map;
    lodash.prototype.head = lodash.prototype.first;
    lodash.prototype.select = lodash.prototype.filter;
    lodash.prototype.tail = lodash.prototype.rest;

    return lodash;
  }

  /*--------------------------------------------------------------------------*/

  // Export lodash.
  var _ = runInContext();

  // Some AMD build optimizers like r.js check for condition patterns like the following:
  if (typeof define == 'function' && typeof define.amd == 'object' && define.amd) {
    // Expose lodash to the global object when an AMD loader is present to avoid
    // errors in cases where lodash is loaded by a script tag and not intended
    // as an AMD module. See http://requirejs.org/docs/errors.html#mismatch for
    // more details.
    root._ = _;

    // Define as an anonymous module so, through path mapping, it can be
    // referenced as the "underscore" module.
    define(function() {
      return _;
    });
  }
  // Check for `exports` after `define` in case a build optimizer adds an `exports` object.
  else if (freeExports && freeModule) {
    // Export for Node.js or RingoJS.
    if (moduleExports) {
      (freeModule.exports = _)._ = _;
    }
    // Export for Narwhal or Rhino -require.
    else {
      freeExports._ = _;
    }
  }
  else {
    // Export for a browser or Rhino.
    root._ = _;
  }
}.call(this));

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],108:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule AutoFocusMixin
 * @typechecks static-only
 */

"use strict";

var focusNode = require("./focusNode");

var AutoFocusMixin = {
  componentDidMount: function() {
    if (this.props.autoFocus) {
      focusNode(this.getDOMNode());
    }
  }
};

module.exports = AutoFocusMixin;

},{"./focusNode":232}],109:[function(require,module,exports){
/**
 * Copyright 2013 Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule BeforeInputEventPlugin
 * @typechecks static-only
 */

"use strict";

var EventConstants = require("./EventConstants");
var EventPropagators = require("./EventPropagators");
var ExecutionEnvironment = require("./ExecutionEnvironment");
var SyntheticInputEvent = require("./SyntheticInputEvent");

var keyOf = require("./keyOf");

var canUseTextInputEvent = (
  ExecutionEnvironment.canUseDOM &&
  'TextEvent' in window &&
  !('documentMode' in document || isPresto())
);

/**
 * Opera <= 12 includes TextEvent in window, but does not fire
 * text input events. Rely on keypress instead.
 */
function isPresto() {
  var opera = window.opera;
  return (
    typeof opera === 'object' &&
    typeof opera.version === 'function' &&
    parseInt(opera.version(), 10) <= 12
  );
}

var SPACEBAR_CODE = 32;
var SPACEBAR_CHAR = String.fromCharCode(SPACEBAR_CODE);

var topLevelTypes = EventConstants.topLevelTypes;

// Events and their corresponding property names.
var eventTypes = {
  beforeInput: {
    phasedRegistrationNames: {
      bubbled: keyOf({onBeforeInput: null}),
      captured: keyOf({onBeforeInputCapture: null})
    },
    dependencies: [
      topLevelTypes.topCompositionEnd,
      topLevelTypes.topKeyPress,
      topLevelTypes.topTextInput,
      topLevelTypes.topPaste
    ]
  }
};

// Track characters inserted via keypress and composition events.
var fallbackChars = null;

// Track whether we've ever handled a keypress on the space key.
var hasSpaceKeypress = false;

/**
 * Return whether a native keypress event is assumed to be a command.
 * This is required because Firefox fires `keypress` events for key commands
 * (cut, copy, select-all, etc.) even though no character is inserted.
 */
function isKeypressCommand(nativeEvent) {
  return (
    (nativeEvent.ctrlKey || nativeEvent.altKey || nativeEvent.metaKey) &&
    // ctrlKey && altKey is equivalent to AltGr, and is not a command.
    !(nativeEvent.ctrlKey && nativeEvent.altKey)
  );
}

/**
 * Create an `onBeforeInput` event to match
 * http://www.w3.org/TR/2013/WD-DOM-Level-3-Events-20131105/#events-inputevents.
 *
 * This event plugin is based on the native `textInput` event
 * available in Chrome, Safari, Opera, and IE. This event fires after
 * `onKeyPress` and `onCompositionEnd`, but before `onInput`.
 *
 * `beforeInput` is spec'd but not implemented in any browsers, and
 * the `input` event does not provide any useful information about what has
 * actually been added, contrary to the spec. Thus, `textInput` is the best
 * available event to identify the characters that have actually been inserted
 * into the target node.
 */
var BeforeInputEventPlugin = {

  eventTypes: eventTypes,

  /**
   * @param {string} topLevelType Record from `EventConstants`.
   * @param {DOMEventTarget} topLevelTarget The listening component root node.
   * @param {string} topLevelTargetID ID of `topLevelTarget`.
   * @param {object} nativeEvent Native browser event.
   * @return {*} An accumulation of synthetic events.
   * @see {EventPluginHub.extractEvents}
   */
  extractEvents: function(
      topLevelType,
      topLevelTarget,
      topLevelTargetID,
      nativeEvent) {

    var chars;

    if (canUseTextInputEvent) {
      switch (topLevelType) {
        case topLevelTypes.topKeyPress:
          /**
           * If native `textInput` events are available, our goal is to make
           * use of them. However, there is a special case: the spacebar key.
           * In Webkit, preventing default on a spacebar `textInput` event
           * cancels character insertion, but it *also* causes the browser
           * to fall back to its default spacebar behavior of scrolling the
           * page.
           *
           * Tracking at:
           * https://code.google.com/p/chromium/issues/detail?id=355103
           *
           * To avoid this issue, use the keypress event as if no `textInput`
           * event is available.
           */
          var which = nativeEvent.which;
          if (which !== SPACEBAR_CODE) {
            return;
          }

          hasSpaceKeypress = true;
          chars = SPACEBAR_CHAR;
          break;

        case topLevelTypes.topTextInput:
          // Record the characters to be added to the DOM.
          chars = nativeEvent.data;

          // If it's a spacebar character, assume that we have already handled
          // it at the keypress level and bail immediately. Android Chrome
          // doesn't give us keycodes, so we need to blacklist it.
          if (chars === SPACEBAR_CHAR && hasSpaceKeypress) {
            return;
          }

          // Otherwise, carry on.
          break;

        default:
          // For other native event types, do nothing.
          return;
      }
    } else {
      switch (topLevelType) {
        case topLevelTypes.topPaste:
          // If a paste event occurs after a keypress, throw out the input
          // chars. Paste events should not lead to BeforeInput events.
          fallbackChars = null;
          break;
        case topLevelTypes.topKeyPress:
          /**
           * As of v27, Firefox may fire keypress events even when no character
           * will be inserted. A few possibilities:
           *
           * - `which` is `0`. Arrow keys, Esc key, etc.
           *
           * - `which` is the pressed key code, but no char is available.
           *   Ex: 'AltGr + d` in Polish. There is no modified character for
           *   this key combination and no character is inserted into the
           *   document, but FF fires the keypress for char code `100` anyway.
           *   No `input` event will occur.
           *
           * - `which` is the pressed key code, but a command combination is
           *   being used. Ex: `Cmd+C`. No character is inserted, and no
           *   `input` event will occur.
           */
          if (nativeEvent.which && !isKeypressCommand(nativeEvent)) {
            fallbackChars = String.fromCharCode(nativeEvent.which);
          }
          break;
        case topLevelTypes.topCompositionEnd:
          fallbackChars = nativeEvent.data;
          break;
      }

      // If no changes have occurred to the fallback string, no relevant
      // event has fired and we're done.
      if (fallbackChars === null) {
        return;
      }

      chars = fallbackChars;
    }

    // If no characters are being inserted, no BeforeInput event should
    // be fired.
    if (!chars) {
      return;
    }

    var event = SyntheticInputEvent.getPooled(
      eventTypes.beforeInput,
      topLevelTargetID,
      nativeEvent
    );

    event.data = chars;
    fallbackChars = null;
    EventPropagators.accumulateTwoPhaseDispatches(event);
    return event;
  }
};

module.exports = BeforeInputEventPlugin;

},{"./EventConstants":123,"./EventPropagators":128,"./ExecutionEnvironment":129,"./SyntheticInputEvent":208,"./keyOf":254}],110:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule CSSCore
 * @typechecks
 */

var invariant = require("./invariant");

/**
 * The CSSCore module specifies the API (and implements most of the methods)
 * that should be used when dealing with the display of elements (via their
 * CSS classes and visibility on screen. It is an API focused on mutating the
 * display and not reading it as no logical state should be encoded in the
 * display of elements.
 */

var CSSCore = {

  /**
   * Adds the class passed in to the element if it doesn't already have it.
   *
   * @param {DOMElement} element the element to set the class on
   * @param {string} className the CSS className
   * @return {DOMElement} the element passed in
   */
  addClass: function(element, className) {
    ("production" !== process.env.NODE_ENV ? invariant(
      !/\s/.test(className),
      'CSSCore.addClass takes only a single class name. "%s" contains ' +
      'multiple classes.', className
    ) : invariant(!/\s/.test(className)));

    if (className) {
      if (element.classList) {
        element.classList.add(className);
      } else if (!CSSCore.hasClass(element, className)) {
        element.className = element.className + ' ' + className;
      }
    }
    return element;
  },

  /**
   * Removes the class passed in from the element
   *
   * @param {DOMElement} element the element to set the class on
   * @param {string} className the CSS className
   * @return {DOMElement} the element passed in
   */
  removeClass: function(element, className) {
    ("production" !== process.env.NODE_ENV ? invariant(
      !/\s/.test(className),
      'CSSCore.removeClass takes only a single class name. "%s" contains ' +
      'multiple classes.', className
    ) : invariant(!/\s/.test(className)));

    if (className) {
      if (element.classList) {
        element.classList.remove(className);
      } else if (CSSCore.hasClass(element, className)) {
        element.className = element.className
          .replace(new RegExp('(^|\\s)' + className + '(?:\\s|$)', 'g'), '$1')
          .replace(/\s+/g, ' ') // multiple spaces to one
          .replace(/^\s*|\s*$/g, ''); // trim the ends
      }
    }
    return element;
  },

  /**
   * Helper to add or remove a class from an element based on a condition.
   *
   * @param {DOMElement} element the element to set the class on
   * @param {string} className the CSS className
   * @param {*} bool condition to whether to add or remove the class
   * @return {DOMElement} the element passed in
   */
  conditionClass: function(element, className, bool) {
    return (bool ? CSSCore.addClass : CSSCore.removeClass)(element, className);
  },

  /**
   * Tests whether the element has the class specified.
   *
   * @param {DOMNode|DOMWindow} element the element to set the class on
   * @param {string} className the CSS className
   * @return {boolean} true if the element has the class, false if not
   */
  hasClass: function(element, className) {
    ("production" !== process.env.NODE_ENV ? invariant(
      !/\s/.test(className),
      'CSS.hasClass takes only a single class name.'
    ) : invariant(!/\s/.test(className)));
    if (element.classList) {
      return !!className && element.classList.contains(className);
    }
    return (' ' + element.className + ' ').indexOf(' ' + className + ' ') > -1;
  }

};

module.exports = CSSCore;

}).call(this,require('_process'))
},{"./invariant":247,"_process":91}],111:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule CSSProperty
 */

"use strict";

/**
 * CSS properties which accept numbers but are not in units of "px".
 */
var isUnitlessNumber = {
  columnCount: true,
  flex: true,
  flexGrow: true,
  flexShrink: true,
  fontWeight: true,
  lineClamp: true,
  lineHeight: true,
  opacity: true,
  order: true,
  orphans: true,
  widows: true,
  zIndex: true,
  zoom: true,

  // SVG-related properties
  fillOpacity: true,
  strokeOpacity: true
};

/**
 * @param {string} prefix vendor-specific prefix, eg: Webkit
 * @param {string} key style name, eg: transitionDuration
 * @return {string} style name prefixed with `prefix`, properly camelCased, eg:
 * WebkitTransitionDuration
 */
function prefixKey(prefix, key) {
  return prefix + key.charAt(0).toUpperCase() + key.substring(1);
}

/**
 * Support style names that may come passed in prefixed by adding permutations
 * of vendor prefixes.
 */
var prefixes = ['Webkit', 'ms', 'Moz', 'O'];

// Using Object.keys here, or else the vanilla for-in loop makes IE8 go into an
// infinite loop, because it iterates over the newly added props too.
Object.keys(isUnitlessNumber).forEach(function(prop) {
  prefixes.forEach(function(prefix) {
    isUnitlessNumber[prefixKey(prefix, prop)] = isUnitlessNumber[prop];
  });
});

/**
 * Most style properties can be unset by doing .style[prop] = '' but IE8
 * doesn't like doing that with shorthand properties so for the properties that
 * IE8 breaks on, which are listed here, we instead unset each of the
 * individual properties. See http://bugs.jquery.com/ticket/12385.
 * The 4-value 'clock' properties like margin, padding, border-width seem to
 * behave without any problems. Curiously, list-style works too without any
 * special prodding.
 */
var shorthandPropertyExpansions = {
  background: {
    backgroundImage: true,
    backgroundPosition: true,
    backgroundRepeat: true,
    backgroundColor: true
  },
  border: {
    borderWidth: true,
    borderStyle: true,
    borderColor: true
  },
  borderBottom: {
    borderBottomWidth: true,
    borderBottomStyle: true,
    borderBottomColor: true
  },
  borderLeft: {
    borderLeftWidth: true,
    borderLeftStyle: true,
    borderLeftColor: true
  },
  borderRight: {
    borderRightWidth: true,
    borderRightStyle: true,
    borderRightColor: true
  },
  borderTop: {
    borderTopWidth: true,
    borderTopStyle: true,
    borderTopColor: true
  },
  font: {
    fontStyle: true,
    fontVariant: true,
    fontWeight: true,
    fontSize: true,
    lineHeight: true,
    fontFamily: true
  }
};

var CSSProperty = {
  isUnitlessNumber: isUnitlessNumber,
  shorthandPropertyExpansions: shorthandPropertyExpansions
};

module.exports = CSSProperty;

},{}],112:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule CSSPropertyOperations
 * @typechecks static-only
 */

"use strict";

var CSSProperty = require("./CSSProperty");
var ExecutionEnvironment = require("./ExecutionEnvironment");

var camelizeStyleName = require("./camelizeStyleName");
var dangerousStyleValue = require("./dangerousStyleValue");
var hyphenateStyleName = require("./hyphenateStyleName");
var memoizeStringOnly = require("./memoizeStringOnly");
var warning = require("./warning");

var processStyleName = memoizeStringOnly(function(styleName) {
  return hyphenateStyleName(styleName);
});

var styleFloatAccessor = 'cssFloat';
if (ExecutionEnvironment.canUseDOM) {
  // IE8 only supports accessing cssFloat (standard) as styleFloat
  if (document.documentElement.style.cssFloat === undefined) {
    styleFloatAccessor = 'styleFloat';
  }
}

if ("production" !== process.env.NODE_ENV) {
  var warnedStyleNames = {};

  var warnHyphenatedStyleName = function(name) {
    if (warnedStyleNames.hasOwnProperty(name) && warnedStyleNames[name]) {
      return;
    }

    warnedStyleNames[name] = true;
    ("production" !== process.env.NODE_ENV ? warning(
      false,
      'Unsupported style property ' + name + '. Did you mean ' +
      camelizeStyleName(name) + '?'
    ) : null);
  };
}

/**
 * Operations for dealing with CSS properties.
 */
var CSSPropertyOperations = {

  /**
   * Serializes a mapping of style properties for use as inline styles:
   *
   *   > createMarkupForStyles({width: '200px', height: 0})
   *   "width:200px;height:0;"
   *
   * Undefined values are ignored so that declarative programming is easier.
   * The result should be HTML-escaped before insertion into the DOM.
   *
   * @param {object} styles
   * @return {?string}
   */
  createMarkupForStyles: function(styles) {
    var serialized = '';
    for (var styleName in styles) {
      if (!styles.hasOwnProperty(styleName)) {
        continue;
      }
      if ("production" !== process.env.NODE_ENV) {
        if (styleName.indexOf('-') > -1) {
          warnHyphenatedStyleName(styleName);
        }
      }
      var styleValue = styles[styleName];
      if (styleValue != null) {
        serialized += processStyleName(styleName) + ':';
        serialized += dangerousStyleValue(styleName, styleValue) + ';';
      }
    }
    return serialized || null;
  },

  /**
   * Sets the value for multiple styles on a node.  If a value is specified as
   * '' (empty string), the corresponding style property will be unset.
   *
   * @param {DOMElement} node
   * @param {object} styles
   */
  setValueForStyles: function(node, styles) {
    var style = node.style;
    for (var styleName in styles) {
      if (!styles.hasOwnProperty(styleName)) {
        continue;
      }
      if ("production" !== process.env.NODE_ENV) {
        if (styleName.indexOf('-') > -1) {
          warnHyphenatedStyleName(styleName);
        }
      }
      var styleValue = dangerousStyleValue(styleName, styles[styleName]);
      if (styleName === 'float') {
        styleName = styleFloatAccessor;
      }
      if (styleValue) {
        style[styleName] = styleValue;
      } else {
        var expansion = CSSProperty.shorthandPropertyExpansions[styleName];
        if (expansion) {
          // Shorthand property that IE8 won't like unsetting, so unset each
          // component to placate it
          for (var individualStyleName in expansion) {
            style[individualStyleName] = '';
          }
        } else {
          style[styleName] = '';
        }
      }
    }
  }

};

module.exports = CSSPropertyOperations;

}).call(this,require('_process'))
},{"./CSSProperty":111,"./ExecutionEnvironment":129,"./camelizeStyleName":219,"./dangerousStyleValue":226,"./hyphenateStyleName":245,"./memoizeStringOnly":256,"./warning":267,"_process":91}],113:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule CallbackQueue
 */

"use strict";

var PooledClass = require("./PooledClass");

var assign = require("./Object.assign");
var invariant = require("./invariant");

/**
 * A specialized pseudo-event module to help keep track of components waiting to
 * be notified when their DOM representations are available for use.
 *
 * This implements `PooledClass`, so you should never need to instantiate this.
 * Instead, use `CallbackQueue.getPooled()`.
 *
 * @class ReactMountReady
 * @implements PooledClass
 * @internal
 */
function CallbackQueue() {
  this._callbacks = null;
  this._contexts = null;
}

assign(CallbackQueue.prototype, {

  /**
   * Enqueues a callback to be invoked when `notifyAll` is invoked.
   *
   * @param {function} callback Invoked when `notifyAll` is invoked.
   * @param {?object} context Context to call `callback` with.
   * @internal
   */
  enqueue: function(callback, context) {
    this._callbacks = this._callbacks || [];
    this._contexts = this._contexts || [];
    this._callbacks.push(callback);
    this._contexts.push(context);
  },

  /**
   * Invokes all enqueued callbacks and clears the queue. This is invoked after
   * the DOM representation of a component has been created or updated.
   *
   * @internal
   */
  notifyAll: function() {
    var callbacks = this._callbacks;
    var contexts = this._contexts;
    if (callbacks) {
      ("production" !== process.env.NODE_ENV ? invariant(
        callbacks.length === contexts.length,
        "Mismatched list of contexts in callback queue"
      ) : invariant(callbacks.length === contexts.length));
      this._callbacks = null;
      this._contexts = null;
      for (var i = 0, l = callbacks.length; i < l; i++) {
        callbacks[i].call(contexts[i]);
      }
      callbacks.length = 0;
      contexts.length = 0;
    }
  },

  /**
   * Resets the internal queue.
   *
   * @internal
   */
  reset: function() {
    this._callbacks = null;
    this._contexts = null;
  },

  /**
   * `PooledClass` looks for this.
   */
  destructor: function() {
    this.reset();
  }

});

PooledClass.addPoolingTo(CallbackQueue);

module.exports = CallbackQueue;

}).call(this,require('_process'))
},{"./Object.assign":135,"./PooledClass":136,"./invariant":247,"_process":91}],114:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ChangeEventPlugin
 */

"use strict";

var EventConstants = require("./EventConstants");
var EventPluginHub = require("./EventPluginHub");
var EventPropagators = require("./EventPropagators");
var ExecutionEnvironment = require("./ExecutionEnvironment");
var ReactUpdates = require("./ReactUpdates");
var SyntheticEvent = require("./SyntheticEvent");

var isEventSupported = require("./isEventSupported");
var isTextInputElement = require("./isTextInputElement");
var keyOf = require("./keyOf");

var topLevelTypes = EventConstants.topLevelTypes;

var eventTypes = {
  change: {
    phasedRegistrationNames: {
      bubbled: keyOf({onChange: null}),
      captured: keyOf({onChangeCapture: null})
    },
    dependencies: [
      topLevelTypes.topBlur,
      topLevelTypes.topChange,
      topLevelTypes.topClick,
      topLevelTypes.topFocus,
      topLevelTypes.topInput,
      topLevelTypes.topKeyDown,
      topLevelTypes.topKeyUp,
      topLevelTypes.topSelectionChange
    ]
  }
};

/**
 * For IE shims
 */
var activeElement = null;
var activeElementID = null;
var activeElementValue = null;
var activeElementValueProp = null;

/**
 * SECTION: handle `change` event
 */
function shouldUseChangeEvent(elem) {
  return (
    elem.nodeName === 'SELECT' ||
    (elem.nodeName === 'INPUT' && elem.type === 'file')
  );
}

var doesChangeEventBubble = false;
if (ExecutionEnvironment.canUseDOM) {
  // See `handleChange` comment below
  doesChangeEventBubble = isEventSupported('change') && (
    !('documentMode' in document) || document.documentMode > 8
  );
}

function manualDispatchChangeEvent(nativeEvent) {
  var event = SyntheticEvent.getPooled(
    eventTypes.change,
    activeElementID,
    nativeEvent
  );
  EventPropagators.accumulateTwoPhaseDispatches(event);

  // If change and propertychange bubbled, we'd just bind to it like all the
  // other events and have it go through ReactBrowserEventEmitter. Since it
  // doesn't, we manually listen for the events and so we have to enqueue and
  // process the abstract event manually.
  //
  // Batching is necessary here in order to ensure that all event handlers run
  // before the next rerender (including event handlers attached to ancestor
  // elements instead of directly on the input). Without this, controlled
  // components don't work properly in conjunction with event bubbling because
  // the component is rerendered and the value reverted before all the event
  // handlers can run. See https://github.com/facebook/react/issues/708.
  ReactUpdates.batchedUpdates(runEventInBatch, event);
}

function runEventInBatch(event) {
  EventPluginHub.enqueueEvents(event);
  EventPluginHub.processEventQueue();
}

function startWatchingForChangeEventIE8(target, targetID) {
  activeElement = target;
  activeElementID = targetID;
  activeElement.attachEvent('onchange', manualDispatchChangeEvent);
}

function stopWatchingForChangeEventIE8() {
  if (!activeElement) {
    return;
  }
  activeElement.detachEvent('onchange', manualDispatchChangeEvent);
  activeElement = null;
  activeElementID = null;
}

function getTargetIDForChangeEvent(
    topLevelType,
    topLevelTarget,
    topLevelTargetID) {
  if (topLevelType === topLevelTypes.topChange) {
    return topLevelTargetID;
  }
}
function handleEventsForChangeEventIE8(
    topLevelType,
    topLevelTarget,
    topLevelTargetID) {
  if (topLevelType === topLevelTypes.topFocus) {
    // stopWatching() should be a noop here but we call it just in case we
    // missed a blur event somehow.
    stopWatchingForChangeEventIE8();
    startWatchingForChangeEventIE8(topLevelTarget, topLevelTargetID);
  } else if (topLevelType === topLevelTypes.topBlur) {
    stopWatchingForChangeEventIE8();
  }
}


/**
 * SECTION: handle `input` event
 */
var isInputEventSupported = false;
if (ExecutionEnvironment.canUseDOM) {
  // IE9 claims to support the input event but fails to trigger it when
  // deleting text, so we ignore its input events
  isInputEventSupported = isEventSupported('input') && (
    !('documentMode' in document) || document.documentMode > 9
  );
}

/**
 * (For old IE.) Replacement getter/setter for the `value` property that gets
 * set on the active element.
 */
var newValueProp =  {
  get: function() {
    return activeElementValueProp.get.call(this);
  },
  set: function(val) {
    // Cast to a string so we can do equality checks.
    activeElementValue = '' + val;
    activeElementValueProp.set.call(this, val);
  }
};

/**
 * (For old IE.) Starts tracking propertychange events on the passed-in element
 * and override the value property so that we can distinguish user events from
 * value changes in JS.
 */
function startWatchingForValueChange(target, targetID) {
  activeElement = target;
  activeElementID = targetID;
  activeElementValue = target.value;
  activeElementValueProp = Object.getOwnPropertyDescriptor(
    target.constructor.prototype,
    'value'
  );

  Object.defineProperty(activeElement, 'value', newValueProp);
  activeElement.attachEvent('onpropertychange', handlePropertyChange);
}

/**
 * (For old IE.) Removes the event listeners from the currently-tracked element,
 * if any exists.
 */
function stopWatchingForValueChange() {
  if (!activeElement) {
    return;
  }

  // delete restores the original property definition
  delete activeElement.value;
  activeElement.detachEvent('onpropertychange', handlePropertyChange);

  activeElement = null;
  activeElementID = null;
  activeElementValue = null;
  activeElementValueProp = null;
}

/**
 * (For old IE.) Handles a propertychange event, sending a `change` event if
 * the value of the active element has changed.
 */
function handlePropertyChange(nativeEvent) {
  if (nativeEvent.propertyName !== 'value') {
    return;
  }
  var value = nativeEvent.srcElement.value;
  if (value === activeElementValue) {
    return;
  }
  activeElementValue = value;

  manualDispatchChangeEvent(nativeEvent);
}

/**
 * If a `change` event should be fired, returns the target's ID.
 */
function getTargetIDForInputEvent(
    topLevelType,
    topLevelTarget,
    topLevelTargetID) {
  if (topLevelType === topLevelTypes.topInput) {
    // In modern browsers (i.e., not IE8 or IE9), the input event is exactly
    // what we want so fall through here and trigger an abstract event
    return topLevelTargetID;
  }
}

// For IE8 and IE9.
function handleEventsForInputEventIE(
    topLevelType,
    topLevelTarget,
    topLevelTargetID) {
  if (topLevelType === topLevelTypes.topFocus) {
    // In IE8, we can capture almost all .value changes by adding a
    // propertychange handler and looking for events with propertyName
    // equal to 'value'
    // In IE9, propertychange fires for most input events but is buggy and
    // doesn't fire when text is deleted, but conveniently, selectionchange
    // appears to fire in all of the remaining cases so we catch those and
    // forward the event if the value has changed
    // In either case, we don't want to call the event handler if the value
    // is changed from JS so we redefine a setter for `.value` that updates
    // our activeElementValue variable, allowing us to ignore those changes
    //
    // stopWatching() should be a noop here but we call it just in case we
    // missed a blur event somehow.
    stopWatchingForValueChange();
    startWatchingForValueChange(topLevelTarget, topLevelTargetID);
  } else if (topLevelType === topLevelTypes.topBlur) {
    stopWatchingForValueChange();
  }
}

// For IE8 and IE9.
function getTargetIDForInputEventIE(
    topLevelType,
    topLevelTarget,
    topLevelTargetID) {
  if (topLevelType === topLevelTypes.topSelectionChange ||
      topLevelType === topLevelTypes.topKeyUp ||
      topLevelType === topLevelTypes.topKeyDown) {
    // On the selectionchange event, the target is just document which isn't
    // helpful for us so just check activeElement instead.
    //
    // 99% of the time, keydown and keyup aren't necessary. IE8 fails to fire
    // propertychange on the first input event after setting `value` from a
    // script and fires only keydown, keypress, keyup. Catching keyup usually
    // gets it and catching keydown lets us fire an event for the first
    // keystroke if user does a key repeat (it'll be a little delayed: right
    // before the second keystroke). Other input methods (e.g., paste) seem to
    // fire selectionchange normally.
    if (activeElement && activeElement.value !== activeElementValue) {
      activeElementValue = activeElement.value;
      return activeElementID;
    }
  }
}


/**
 * SECTION: handle `click` event
 */
function shouldUseClickEvent(elem) {
  // Use the `click` event to detect changes to checkbox and radio inputs.
  // This approach works across all browsers, whereas `change` does not fire
  // until `blur` in IE8.
  return (
    elem.nodeName === 'INPUT' &&
    (elem.type === 'checkbox' || elem.type === 'radio')
  );
}

function getTargetIDForClickEvent(
    topLevelType,
    topLevelTarget,
    topLevelTargetID) {
  if (topLevelType === topLevelTypes.topClick) {
    return topLevelTargetID;
  }
}

/**
 * This plugin creates an `onChange` event that normalizes change events
 * across form elements. This event fires at a time when it's possible to
 * change the element's value without seeing a flicker.
 *
 * Supported elements are:
 * - input (see `isTextInputElement`)
 * - textarea
 * - select
 */
var ChangeEventPlugin = {

  eventTypes: eventTypes,

  /**
   * @param {string} topLevelType Record from `EventConstants`.
   * @param {DOMEventTarget} topLevelTarget The listening component root node.
   * @param {string} topLevelTargetID ID of `topLevelTarget`.
   * @param {object} nativeEvent Native browser event.
   * @return {*} An accumulation of synthetic events.
   * @see {EventPluginHub.extractEvents}
   */
  extractEvents: function(
      topLevelType,
      topLevelTarget,
      topLevelTargetID,
      nativeEvent) {

    var getTargetIDFunc, handleEventFunc;
    if (shouldUseChangeEvent(topLevelTarget)) {
      if (doesChangeEventBubble) {
        getTargetIDFunc = getTargetIDForChangeEvent;
      } else {
        handleEventFunc = handleEventsForChangeEventIE8;
      }
    } else if (isTextInputElement(topLevelTarget)) {
      if (isInputEventSupported) {
        getTargetIDFunc = getTargetIDForInputEvent;
      } else {
        getTargetIDFunc = getTargetIDForInputEventIE;
        handleEventFunc = handleEventsForInputEventIE;
      }
    } else if (shouldUseClickEvent(topLevelTarget)) {
      getTargetIDFunc = getTargetIDForClickEvent;
    }

    if (getTargetIDFunc) {
      var targetID = getTargetIDFunc(
        topLevelType,
        topLevelTarget,
        topLevelTargetID
      );
      if (targetID) {
        var event = SyntheticEvent.getPooled(
          eventTypes.change,
          targetID,
          nativeEvent
        );
        EventPropagators.accumulateTwoPhaseDispatches(event);
        return event;
      }
    }

    if (handleEventFunc) {
      handleEventFunc(
        topLevelType,
        topLevelTarget,
        topLevelTargetID
      );
    }
  }

};

module.exports = ChangeEventPlugin;

},{"./EventConstants":123,"./EventPluginHub":125,"./EventPropagators":128,"./ExecutionEnvironment":129,"./ReactUpdates":197,"./SyntheticEvent":206,"./isEventSupported":248,"./isTextInputElement":250,"./keyOf":254}],115:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ClientReactRootIndex
 * @typechecks
 */

"use strict";

var nextReactRootIndex = 0;

var ClientReactRootIndex = {
  createReactRootIndex: function() {
    return nextReactRootIndex++;
  }
};

module.exports = ClientReactRootIndex;

},{}],116:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule CompositionEventPlugin
 * @typechecks static-only
 */

"use strict";

var EventConstants = require("./EventConstants");
var EventPropagators = require("./EventPropagators");
var ExecutionEnvironment = require("./ExecutionEnvironment");
var ReactInputSelection = require("./ReactInputSelection");
var SyntheticCompositionEvent = require("./SyntheticCompositionEvent");

var getTextContentAccessor = require("./getTextContentAccessor");
var keyOf = require("./keyOf");

var END_KEYCODES = [9, 13, 27, 32]; // Tab, Return, Esc, Space
var START_KEYCODE = 229;

var useCompositionEvent = (
  ExecutionEnvironment.canUseDOM &&
  'CompositionEvent' in window
);

// In IE9+, we have access to composition events, but the data supplied
// by the native compositionend event may be incorrect. In Korean, for example,
// the compositionend event contains only one character regardless of
// how many characters have been composed since compositionstart.
// We therefore use the fallback data while still using the native
// events as triggers.
var useFallbackData = (
  !useCompositionEvent ||
  (
    'documentMode' in document &&
    document.documentMode > 8 &&
    document.documentMode <= 11
  )
);

var topLevelTypes = EventConstants.topLevelTypes;
var currentComposition = null;

// Events and their corresponding property names.
var eventTypes = {
  compositionEnd: {
    phasedRegistrationNames: {
      bubbled: keyOf({onCompositionEnd: null}),
      captured: keyOf({onCompositionEndCapture: null})
    },
    dependencies: [
      topLevelTypes.topBlur,
      topLevelTypes.topCompositionEnd,
      topLevelTypes.topKeyDown,
      topLevelTypes.topKeyPress,
      topLevelTypes.topKeyUp,
      topLevelTypes.topMouseDown
    ]
  },
  compositionStart: {
    phasedRegistrationNames: {
      bubbled: keyOf({onCompositionStart: null}),
      captured: keyOf({onCompositionStartCapture: null})
    },
    dependencies: [
      topLevelTypes.topBlur,
      topLevelTypes.topCompositionStart,
      topLevelTypes.topKeyDown,
      topLevelTypes.topKeyPress,
      topLevelTypes.topKeyUp,
      topLevelTypes.topMouseDown
    ]
  },
  compositionUpdate: {
    phasedRegistrationNames: {
      bubbled: keyOf({onCompositionUpdate: null}),
      captured: keyOf({onCompositionUpdateCapture: null})
    },
    dependencies: [
      topLevelTypes.topBlur,
      topLevelTypes.topCompositionUpdate,
      topLevelTypes.topKeyDown,
      topLevelTypes.topKeyPress,
      topLevelTypes.topKeyUp,
      topLevelTypes.topMouseDown
    ]
  }
};

/**
 * Translate native top level events into event types.
 *
 * @param {string} topLevelType
 * @return {object}
 */
function getCompositionEventType(topLevelType) {
  switch (topLevelType) {
    case topLevelTypes.topCompositionStart:
      return eventTypes.compositionStart;
    case topLevelTypes.topCompositionEnd:
      return eventTypes.compositionEnd;
    case topLevelTypes.topCompositionUpdate:
      return eventTypes.compositionUpdate;
  }
}

/**
 * Does our fallback best-guess model think this event signifies that
 * composition has begun?
 *
 * @param {string} topLevelType
 * @param {object} nativeEvent
 * @return {boolean}
 */
function isFallbackStart(topLevelType, nativeEvent) {
  return (
    topLevelType === topLevelTypes.topKeyDown &&
    nativeEvent.keyCode === START_KEYCODE
  );
}

/**
 * Does our fallback mode think that this event is the end of composition?
 *
 * @param {string} topLevelType
 * @param {object} nativeEvent
 * @return {boolean}
 */
function isFallbackEnd(topLevelType, nativeEvent) {
  switch (topLevelType) {
    case topLevelTypes.topKeyUp:
      // Command keys insert or clear IME input.
      return (END_KEYCODES.indexOf(nativeEvent.keyCode) !== -1);
    case topLevelTypes.topKeyDown:
      // Expect IME keyCode on each keydown. If we get any other
      // code we must have exited earlier.
      return (nativeEvent.keyCode !== START_KEYCODE);
    case topLevelTypes.topKeyPress:
    case topLevelTypes.topMouseDown:
    case topLevelTypes.topBlur:
      // Events are not possible without cancelling IME.
      return true;
    default:
      return false;
  }
}

/**
 * Helper class stores information about selection and document state
 * so we can figure out what changed at a later date.
 *
 * @param {DOMEventTarget} root
 */
function FallbackCompositionState(root) {
  this.root = root;
  this.startSelection = ReactInputSelection.getSelection(root);
  this.startValue = this.getText();
}

/**
 * Get current text of input.
 *
 * @return {string}
 */
FallbackCompositionState.prototype.getText = function() {
  return this.root.value || this.root[getTextContentAccessor()];
};

/**
 * Text that has changed since the start of composition.
 *
 * @return {string}
 */
FallbackCompositionState.prototype.getData = function() {
  var endValue = this.getText();
  var prefixLength = this.startSelection.start;
  var suffixLength = this.startValue.length - this.startSelection.end;

  return endValue.substr(
    prefixLength,
    endValue.length - suffixLength - prefixLength
  );
};

/**
 * This plugin creates `onCompositionStart`, `onCompositionUpdate` and
 * `onCompositionEnd` events on inputs, textareas and contentEditable
 * nodes.
 */
var CompositionEventPlugin = {

  eventTypes: eventTypes,

  /**
   * @param {string} topLevelType Record from `EventConstants`.
   * @param {DOMEventTarget} topLevelTarget The listening component root node.
   * @param {string} topLevelTargetID ID of `topLevelTarget`.
   * @param {object} nativeEvent Native browser event.
   * @return {*} An accumulation of synthetic events.
   * @see {EventPluginHub.extractEvents}
   */
  extractEvents: function(
      topLevelType,
      topLevelTarget,
      topLevelTargetID,
      nativeEvent) {

    var eventType;
    var data;

    if (useCompositionEvent) {
      eventType = getCompositionEventType(topLevelType);
    } else if (!currentComposition) {
      if (isFallbackStart(topLevelType, nativeEvent)) {
        eventType = eventTypes.compositionStart;
      }
    } else if (isFallbackEnd(topLevelType, nativeEvent)) {
      eventType = eventTypes.compositionEnd;
    }

    if (useFallbackData) {
      // The current composition is stored statically and must not be
      // overwritten while composition continues.
      if (!currentComposition && eventType === eventTypes.compositionStart) {
        currentComposition = new FallbackCompositionState(topLevelTarget);
      } else if (eventType === eventTypes.compositionEnd) {
        if (currentComposition) {
          data = currentComposition.getData();
          currentComposition = null;
        }
      }
    }

    if (eventType) {
      var event = SyntheticCompositionEvent.getPooled(
        eventType,
        topLevelTargetID,
        nativeEvent
      );
      if (data) {
        // Inject data generated from fallback path into the synthetic event.
        // This matches the property of native CompositionEventInterface.
        event.data = data;
      }
      EventPropagators.accumulateTwoPhaseDispatches(event);
      return event;
    }
  }
};

module.exports = CompositionEventPlugin;

},{"./EventConstants":123,"./EventPropagators":128,"./ExecutionEnvironment":129,"./ReactInputSelection":171,"./SyntheticCompositionEvent":204,"./getTextContentAccessor":242,"./keyOf":254}],117:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule DOMChildrenOperations
 * @typechecks static-only
 */

"use strict";

var Danger = require("./Danger");
var ReactMultiChildUpdateTypes = require("./ReactMultiChildUpdateTypes");

var getTextContentAccessor = require("./getTextContentAccessor");
var invariant = require("./invariant");

/**
 * The DOM property to use when setting text content.
 *
 * @type {string}
 * @private
 */
var textContentAccessor = getTextContentAccessor();

/**
 * Inserts `childNode` as a child of `parentNode` at the `index`.
 *
 * @param {DOMElement} parentNode Parent node in which to insert.
 * @param {DOMElement} childNode Child node to insert.
 * @param {number} index Index at which to insert the child.
 * @internal
 */
function insertChildAt(parentNode, childNode, index) {
  // By exploiting arrays returning `undefined` for an undefined index, we can
  // rely exclusively on `insertBefore(node, null)` instead of also using
  // `appendChild(node)`. However, using `undefined` is not allowed by all
  // browsers so we must replace it with `null`.
  parentNode.insertBefore(
    childNode,
    parentNode.childNodes[index] || null
  );
}

var updateTextContent;
if (textContentAccessor === 'textContent') {
  /**
   * Sets the text content of `node` to `text`.
   *
   * @param {DOMElement} node Node to change
   * @param {string} text New text content
   */
  updateTextContent = function(node, text) {
    node.textContent = text;
  };
} else {
  /**
   * Sets the text content of `node` to `text`.
   *
   * @param {DOMElement} node Node to change
   * @param {string} text New text content
   */
  updateTextContent = function(node, text) {
    // In order to preserve newlines correctly, we can't use .innerText to set
    // the contents (see #1080), so we empty the element then append a text node
    while (node.firstChild) {
      node.removeChild(node.firstChild);
    }
    if (text) {
      var doc = node.ownerDocument || document;
      node.appendChild(doc.createTextNode(text));
    }
  };
}

/**
 * Operations for updating with DOM children.
 */
var DOMChildrenOperations = {

  dangerouslyReplaceNodeWithMarkup: Danger.dangerouslyReplaceNodeWithMarkup,

  updateTextContent: updateTextContent,

  /**
   * Updates a component's children by processing a series of updates. The
   * update configurations are each expected to have a `parentNode` property.
   *
   * @param {array<object>} updates List of update configurations.
   * @param {array<string>} markupList List of markup strings.
   * @internal
   */
  processUpdates: function(updates, markupList) {
    var update;
    // Mapping from parent IDs to initial child orderings.
    var initialChildren = null;
    // List of children that will be moved or removed.
    var updatedChildren = null;

    for (var i = 0; update = updates[i]; i++) {
      if (update.type === ReactMultiChildUpdateTypes.MOVE_EXISTING ||
          update.type === ReactMultiChildUpdateTypes.REMOVE_NODE) {
        var updatedIndex = update.fromIndex;
        var updatedChild = update.parentNode.childNodes[updatedIndex];
        var parentID = update.parentID;

        ("production" !== process.env.NODE_ENV ? invariant(
          updatedChild,
          'processUpdates(): Unable to find child %s of element. This ' +
          'probably means the DOM was unexpectedly mutated (e.g., by the ' +
          'browser), usually due to forgetting a <tbody> when using tables, ' +
          'nesting tags like <form>, <p>, or <a>, or using non-SVG elements '+
          'in an <svg> parent. Try inspecting the child nodes of the element ' +
          'with React ID `%s`.',
          updatedIndex,
          parentID
        ) : invariant(updatedChild));

        initialChildren = initialChildren || {};
        initialChildren[parentID] = initialChildren[parentID] || [];
        initialChildren[parentID][updatedIndex] = updatedChild;

        updatedChildren = updatedChildren || [];
        updatedChildren.push(updatedChild);
      }
    }

    var renderedMarkup = Danger.dangerouslyRenderMarkup(markupList);

    // Remove updated children first so that `toIndex` is consistent.
    if (updatedChildren) {
      for (var j = 0; j < updatedChildren.length; j++) {
        updatedChildren[j].parentNode.removeChild(updatedChildren[j]);
      }
    }

    for (var k = 0; update = updates[k]; k++) {
      switch (update.type) {
        case ReactMultiChildUpdateTypes.INSERT_MARKUP:
          insertChildAt(
            update.parentNode,
            renderedMarkup[update.markupIndex],
            update.toIndex
          );
          break;
        case ReactMultiChildUpdateTypes.MOVE_EXISTING:
          insertChildAt(
            update.parentNode,
            initialChildren[update.parentID][update.fromIndex],
            update.toIndex
          );
          break;
        case ReactMultiChildUpdateTypes.TEXT_CONTENT:
          updateTextContent(
            update.parentNode,
            update.textContent
          );
          break;
        case ReactMultiChildUpdateTypes.REMOVE_NODE:
          // Already removed by the for-loop above.
          break;
      }
    }
  }

};

module.exports = DOMChildrenOperations;

}).call(this,require('_process'))
},{"./Danger":120,"./ReactMultiChildUpdateTypes":178,"./getTextContentAccessor":242,"./invariant":247,"_process":91}],118:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule DOMProperty
 * @typechecks static-only
 */

/*jslint bitwise: true */

"use strict";

var invariant = require("./invariant");

function checkMask(value, bitmask) {
  return (value & bitmask) === bitmask;
}

var DOMPropertyInjection = {
  /**
   * Mapping from normalized, camelcased property names to a configuration that
   * specifies how the associated DOM property should be accessed or rendered.
   */
  MUST_USE_ATTRIBUTE: 0x1,
  MUST_USE_PROPERTY: 0x2,
  HAS_SIDE_EFFECTS: 0x4,
  HAS_BOOLEAN_VALUE: 0x8,
  HAS_NUMERIC_VALUE: 0x10,
  HAS_POSITIVE_NUMERIC_VALUE: 0x20 | 0x10,
  HAS_OVERLOADED_BOOLEAN_VALUE: 0x40,

  /**
   * Inject some specialized knowledge about the DOM. This takes a config object
   * with the following properties:
   *
   * isCustomAttribute: function that given an attribute name will return true
   * if it can be inserted into the DOM verbatim. Useful for data-* or aria-*
   * attributes where it's impossible to enumerate all of the possible
   * attribute names,
   *
   * Properties: object mapping DOM property name to one of the
   * DOMPropertyInjection constants or null. If your attribute isn't in here,
   * it won't get written to the DOM.
   *
   * DOMAttributeNames: object mapping React attribute name to the DOM
   * attribute name. Attribute names not specified use the **lowercase**
   * normalized name.
   *
   * DOMPropertyNames: similar to DOMAttributeNames but for DOM properties.
   * Property names not specified use the normalized name.
   *
   * DOMMutationMethods: Properties that require special mutation methods. If
   * `value` is undefined, the mutation method should unset the property.
   *
   * @param {object} domPropertyConfig the config as described above.
   */
  injectDOMPropertyConfig: function(domPropertyConfig) {
    var Properties = domPropertyConfig.Properties || {};
    var DOMAttributeNames = domPropertyConfig.DOMAttributeNames || {};
    var DOMPropertyNames = domPropertyConfig.DOMPropertyNames || {};
    var DOMMutationMethods = domPropertyConfig.DOMMutationMethods || {};

    if (domPropertyConfig.isCustomAttribute) {
      DOMProperty._isCustomAttributeFunctions.push(
        domPropertyConfig.isCustomAttribute
      );
    }

    for (var propName in Properties) {
      ("production" !== process.env.NODE_ENV ? invariant(
        !DOMProperty.isStandardName.hasOwnProperty(propName),
        'injectDOMPropertyConfig(...): You\'re trying to inject DOM property ' +
        '\'%s\' which has already been injected. You may be accidentally ' +
        'injecting the same DOM property config twice, or you may be ' +
        'injecting two configs that have conflicting property names.',
        propName
      ) : invariant(!DOMProperty.isStandardName.hasOwnProperty(propName)));

      DOMProperty.isStandardName[propName] = true;

      var lowerCased = propName.toLowerCase();
      DOMProperty.getPossibleStandardName[lowerCased] = propName;

      if (DOMAttributeNames.hasOwnProperty(propName)) {
        var attributeName = DOMAttributeNames[propName];
        DOMProperty.getPossibleStandardName[attributeName] = propName;
        DOMProperty.getAttributeName[propName] = attributeName;
      } else {
        DOMProperty.getAttributeName[propName] = lowerCased;
      }

      DOMProperty.getPropertyName[propName] =
        DOMPropertyNames.hasOwnProperty(propName) ?
          DOMPropertyNames[propName] :
          propName;

      if (DOMMutationMethods.hasOwnProperty(propName)) {
        DOMProperty.getMutationMethod[propName] = DOMMutationMethods[propName];
      } else {
        DOMProperty.getMutationMethod[propName] = null;
      }

      var propConfig = Properties[propName];
      DOMProperty.mustUseAttribute[propName] =
        checkMask(propConfig, DOMPropertyInjection.MUST_USE_ATTRIBUTE);
      DOMProperty.mustUseProperty[propName] =
        checkMask(propConfig, DOMPropertyInjection.MUST_USE_PROPERTY);
      DOMProperty.hasSideEffects[propName] =
        checkMask(propConfig, DOMPropertyInjection.HAS_SIDE_EFFECTS);
      DOMProperty.hasBooleanValue[propName] =
        checkMask(propConfig, DOMPropertyInjection.HAS_BOOLEAN_VALUE);
      DOMProperty.hasNumericValue[propName] =
        checkMask(propConfig, DOMPropertyInjection.HAS_NUMERIC_VALUE);
      DOMProperty.hasPositiveNumericValue[propName] =
        checkMask(propConfig, DOMPropertyInjection.HAS_POSITIVE_NUMERIC_VALUE);
      DOMProperty.hasOverloadedBooleanValue[propName] =
        checkMask(propConfig, DOMPropertyInjection.HAS_OVERLOADED_BOOLEAN_VALUE);

      ("production" !== process.env.NODE_ENV ? invariant(
        !DOMProperty.mustUseAttribute[propName] ||
          !DOMProperty.mustUseProperty[propName],
        'DOMProperty: Cannot require using both attribute and property: %s',
        propName
      ) : invariant(!DOMProperty.mustUseAttribute[propName] ||
        !DOMProperty.mustUseProperty[propName]));
      ("production" !== process.env.NODE_ENV ? invariant(
        DOMProperty.mustUseProperty[propName] ||
          !DOMProperty.hasSideEffects[propName],
        'DOMProperty: Properties that have side effects must use property: %s',
        propName
      ) : invariant(DOMProperty.mustUseProperty[propName] ||
        !DOMProperty.hasSideEffects[propName]));
      ("production" !== process.env.NODE_ENV ? invariant(
        !!DOMProperty.hasBooleanValue[propName] +
          !!DOMProperty.hasNumericValue[propName] +
          !!DOMProperty.hasOverloadedBooleanValue[propName] <= 1,
        'DOMProperty: Value can be one of boolean, overloaded boolean, or ' +
        'numeric value, but not a combination: %s',
        propName
      ) : invariant(!!DOMProperty.hasBooleanValue[propName] +
        !!DOMProperty.hasNumericValue[propName] +
        !!DOMProperty.hasOverloadedBooleanValue[propName] <= 1));
    }
  }
};
var defaultValueCache = {};

/**
 * DOMProperty exports lookup objects that can be used like functions:
 *
 *   > DOMProperty.isValid['id']
 *   true
 *   > DOMProperty.isValid['foobar']
 *   undefined
 *
 * Although this may be confusing, it performs better in general.
 *
 * @see http://jsperf.com/key-exists
 * @see http://jsperf.com/key-missing
 */
var DOMProperty = {

  ID_ATTRIBUTE_NAME: 'data-reactid',

  /**
   * Checks whether a property name is a standard property.
   * @type {Object}
   */
  isStandardName: {},

  /**
   * Mapping from lowercase property names to the properly cased version, used
   * to warn in the case of missing properties.
   * @type {Object}
   */
  getPossibleStandardName: {},

  /**
   * Mapping from normalized names to attribute names that differ. Attribute
   * names are used when rendering markup or with `*Attribute()`.
   * @type {Object}
   */
  getAttributeName: {},

  /**
   * Mapping from normalized names to properties on DOM node instances.
   * (This includes properties that mutate due to external factors.)
   * @type {Object}
   */
  getPropertyName: {},

  /**
   * Mapping from normalized names to mutation methods. This will only exist if
   * mutation cannot be set simply by the property or `setAttribute()`.
   * @type {Object}
   */
  getMutationMethod: {},

  /**
   * Whether the property must be accessed and mutated as an object property.
   * @type {Object}
   */
  mustUseAttribute: {},

  /**
   * Whether the property must be accessed and mutated using `*Attribute()`.
   * (This includes anything that fails `<propName> in <element>`.)
   * @type {Object}
   */
  mustUseProperty: {},

  /**
   * Whether or not setting a value causes side effects such as triggering
   * resources to be loaded or text selection changes. We must ensure that
   * the value is only set if it has changed.
   * @type {Object}
   */
  hasSideEffects: {},

  /**
   * Whether the property should be removed when set to a falsey value.
   * @type {Object}
   */
  hasBooleanValue: {},

  /**
   * Whether the property must be numeric or parse as a
   * numeric and should be removed when set to a falsey value.
   * @type {Object}
   */
  hasNumericValue: {},

  /**
   * Whether the property must be positive numeric or parse as a positive
   * numeric and should be removed when set to a falsey value.
   * @type {Object}
   */
  hasPositiveNumericValue: {},

  /**
   * Whether the property can be used as a flag as well as with a value. Removed
   * when strictly equal to false; present without a value when strictly equal
   * to true; present with a value otherwise.
   * @type {Object}
   */
  hasOverloadedBooleanValue: {},

  /**
   * All of the isCustomAttribute() functions that have been injected.
   */
  _isCustomAttributeFunctions: [],

  /**
   * Checks whether a property name is a custom attribute.
   * @method
   */
  isCustomAttribute: function(attributeName) {
    for (var i = 0; i < DOMProperty._isCustomAttributeFunctions.length; i++) {
      var isCustomAttributeFn = DOMProperty._isCustomAttributeFunctions[i];
      if (isCustomAttributeFn(attributeName)) {
        return true;
      }
    }
    return false;
  },

  /**
   * Returns the default property value for a DOM property (i.e., not an
   * attribute). Most default values are '' or false, but not all. Worse yet,
   * some (in particular, `type`) vary depending on the type of element.
   *
   * TODO: Is it better to grab all the possible properties when creating an
   * element to avoid having to create the same element twice?
   */
  getDefaultValueForProperty: function(nodeName, prop) {
    var nodeDefaults = defaultValueCache[nodeName];
    var testElement;
    if (!nodeDefaults) {
      defaultValueCache[nodeName] = nodeDefaults = {};
    }
    if (!(prop in nodeDefaults)) {
      testElement = document.createElement(nodeName);
      nodeDefaults[prop] = testElement[prop];
    }
    return nodeDefaults[prop];
  },

  injection: DOMPropertyInjection
};

module.exports = DOMProperty;

}).call(this,require('_process'))
},{"./invariant":247,"_process":91}],119:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule DOMPropertyOperations
 * @typechecks static-only
 */

"use strict";

var DOMProperty = require("./DOMProperty");

var escapeTextForBrowser = require("./escapeTextForBrowser");
var memoizeStringOnly = require("./memoizeStringOnly");
var warning = require("./warning");

function shouldIgnoreValue(name, value) {
  return value == null ||
    (DOMProperty.hasBooleanValue[name] && !value) ||
    (DOMProperty.hasNumericValue[name] && isNaN(value)) ||
    (DOMProperty.hasPositiveNumericValue[name] && (value < 1)) ||
    (DOMProperty.hasOverloadedBooleanValue[name] && value === false);
}

var processAttributeNameAndPrefix = memoizeStringOnly(function(name) {
  return escapeTextForBrowser(name) + '="';
});

if ("production" !== process.env.NODE_ENV) {
  var reactProps = {
    children: true,
    dangerouslySetInnerHTML: true,
    key: true,
    ref: true
  };
  var warnedProperties = {};

  var warnUnknownProperty = function(name) {
    if (reactProps.hasOwnProperty(name) && reactProps[name] ||
        warnedProperties.hasOwnProperty(name) && warnedProperties[name]) {
      return;
    }

    warnedProperties[name] = true;
    var lowerCasedName = name.toLowerCase();

    // data-* attributes should be lowercase; suggest the lowercase version
    var standardName = (
      DOMProperty.isCustomAttribute(lowerCasedName) ?
        lowerCasedName :
      DOMProperty.getPossibleStandardName.hasOwnProperty(lowerCasedName) ?
        DOMProperty.getPossibleStandardName[lowerCasedName] :
        null
    );

    // For now, only warn when we have a suggested correction. This prevents
    // logging too much when using transferPropsTo.
    ("production" !== process.env.NODE_ENV ? warning(
      standardName == null,
      'Unknown DOM property ' + name + '. Did you mean ' + standardName + '?'
    ) : null);

  };
}

/**
 * Operations for dealing with DOM properties.
 */
var DOMPropertyOperations = {

  /**
   * Creates markup for the ID property.
   *
   * @param {string} id Unescaped ID.
   * @return {string} Markup string.
   */
  createMarkupForID: function(id) {
    return processAttributeNameAndPrefix(DOMProperty.ID_ATTRIBUTE_NAME) +
      escapeTextForBrowser(id) + '"';
  },

  /**
   * Creates markup for a property.
   *
   * @param {string} name
   * @param {*} value
   * @return {?string} Markup string, or null if the property was invalid.
   */
  createMarkupForProperty: function(name, value) {
    if (DOMProperty.isStandardName.hasOwnProperty(name) &&
        DOMProperty.isStandardName[name]) {
      if (shouldIgnoreValue(name, value)) {
        return '';
      }
      var attributeName = DOMProperty.getAttributeName[name];
      if (DOMProperty.hasBooleanValue[name] ||
          (DOMProperty.hasOverloadedBooleanValue[name] && value === true)) {
        return escapeTextForBrowser(attributeName);
      }
      return processAttributeNameAndPrefix(attributeName) +
        escapeTextForBrowser(value) + '"';
    } else if (DOMProperty.isCustomAttribute(name)) {
      if (value == null) {
        return '';
      }
      return processAttributeNameAndPrefix(name) +
        escapeTextForBrowser(value) + '"';
    } else if ("production" !== process.env.NODE_ENV) {
      warnUnknownProperty(name);
    }
    return null;
  },

  /**
   * Sets the value for a property on a node.
   *
   * @param {DOMElement} node
   * @param {string} name
   * @param {*} value
   */
  setValueForProperty: function(node, name, value) {
    if (DOMProperty.isStandardName.hasOwnProperty(name) &&
        DOMProperty.isStandardName[name]) {
      var mutationMethod = DOMProperty.getMutationMethod[name];
      if (mutationMethod) {
        mutationMethod(node, value);
      } else if (shouldIgnoreValue(name, value)) {
        this.deleteValueForProperty(node, name);
      } else if (DOMProperty.mustUseAttribute[name]) {
        // `setAttribute` with objects becomes only `[object]` in IE8/9,
        // ('' + value) makes it output the correct toString()-value.
        node.setAttribute(DOMProperty.getAttributeName[name], '' + value);
      } else {
        var propName = DOMProperty.getPropertyName[name];
        // Must explicitly cast values for HAS_SIDE_EFFECTS-properties to the
        // property type before comparing; only `value` does and is string.
        if (!DOMProperty.hasSideEffects[name] ||
            ('' + node[propName]) !== ('' + value)) {
          // Contrary to `setAttribute`, object properties are properly
          // `toString`ed by IE8/9.
          node[propName] = value;
        }
      }
    } else if (DOMProperty.isCustomAttribute(name)) {
      if (value == null) {
        node.removeAttribute(name);
      } else {
        node.setAttribute(name, '' + value);
      }
    } else if ("production" !== process.env.NODE_ENV) {
      warnUnknownProperty(name);
    }
  },

  /**
   * Deletes the value for a property on a node.
   *
   * @param {DOMElement} node
   * @param {string} name
   */
  deleteValueForProperty: function(node, name) {
    if (DOMProperty.isStandardName.hasOwnProperty(name) &&
        DOMProperty.isStandardName[name]) {
      var mutationMethod = DOMProperty.getMutationMethod[name];
      if (mutationMethod) {
        mutationMethod(node, undefined);
      } else if (DOMProperty.mustUseAttribute[name]) {
        node.removeAttribute(DOMProperty.getAttributeName[name]);
      } else {
        var propName = DOMProperty.getPropertyName[name];
        var defaultValue = DOMProperty.getDefaultValueForProperty(
          node.nodeName,
          propName
        );
        if (!DOMProperty.hasSideEffects[name] ||
            ('' + node[propName]) !== defaultValue) {
          node[propName] = defaultValue;
        }
      }
    } else if (DOMProperty.isCustomAttribute(name)) {
      node.removeAttribute(name);
    } else if ("production" !== process.env.NODE_ENV) {
      warnUnknownProperty(name);
    }
  }

};

module.exports = DOMPropertyOperations;

}).call(this,require('_process'))
},{"./DOMProperty":118,"./escapeTextForBrowser":230,"./memoizeStringOnly":256,"./warning":267,"_process":91}],120:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule Danger
 * @typechecks static-only
 */

/*jslint evil: true, sub: true */

"use strict";

var ExecutionEnvironment = require("./ExecutionEnvironment");

var createNodesFromMarkup = require("./createNodesFromMarkup");
var emptyFunction = require("./emptyFunction");
var getMarkupWrap = require("./getMarkupWrap");
var invariant = require("./invariant");

var OPEN_TAG_NAME_EXP = /^(<[^ \/>]+)/;
var RESULT_INDEX_ATTR = 'data-danger-index';

/**
 * Extracts the `nodeName` from a string of markup.
 *
 * NOTE: Extracting the `nodeName` does not require a regular expression match
 * because we make assumptions about React-generated markup (i.e. there are no
 * spaces surrounding the opening tag and there is at least one attribute).
 *
 * @param {string} markup String of markup.
 * @return {string} Node name of the supplied markup.
 * @see http://jsperf.com/extract-nodename
 */
function getNodeName(markup) {
  return markup.substring(1, markup.indexOf(' '));
}

var Danger = {

  /**
   * Renders markup into an array of nodes. The markup is expected to render
   * into a list of root nodes. Also, the length of `resultList` and
   * `markupList` should be the same.
   *
   * @param {array<string>} markupList List of markup strings to render.
   * @return {array<DOMElement>} List of rendered nodes.
   * @internal
   */
  dangerouslyRenderMarkup: function(markupList) {
    ("production" !== process.env.NODE_ENV ? invariant(
      ExecutionEnvironment.canUseDOM,
      'dangerouslyRenderMarkup(...): Cannot render markup in a worker ' +
      'thread. Make sure `window` and `document` are available globally ' +
      'before requiring React when unit testing or use ' +
      'React.renderToString for server rendering.'
    ) : invariant(ExecutionEnvironment.canUseDOM));
    var nodeName;
    var markupByNodeName = {};
    // Group markup by `nodeName` if a wrap is necessary, else by '*'.
    for (var i = 0; i < markupList.length; i++) {
      ("production" !== process.env.NODE_ENV ? invariant(
        markupList[i],
        'dangerouslyRenderMarkup(...): Missing markup.'
      ) : invariant(markupList[i]));
      nodeName = getNodeName(markupList[i]);
      nodeName = getMarkupWrap(nodeName) ? nodeName : '*';
      markupByNodeName[nodeName] = markupByNodeName[nodeName] || [];
      markupByNodeName[nodeName][i] = markupList[i];
    }
    var resultList = [];
    var resultListAssignmentCount = 0;
    for (nodeName in markupByNodeName) {
      if (!markupByNodeName.hasOwnProperty(nodeName)) {
        continue;
      }
      var markupListByNodeName = markupByNodeName[nodeName];

      // This for-in loop skips the holes of the sparse array. The order of
      // iteration should follow the order of assignment, which happens to match
      // numerical index order, but we don't rely on that.
      for (var resultIndex in markupListByNodeName) {
        if (markupListByNodeName.hasOwnProperty(resultIndex)) {
          var markup = markupListByNodeName[resultIndex];

          // Push the requested markup with an additional RESULT_INDEX_ATTR
          // attribute.  If the markup does not start with a < character, it
          // will be discarded below (with an appropriate console.error).
          markupListByNodeName[resultIndex] = markup.replace(
            OPEN_TAG_NAME_EXP,
            // This index will be parsed back out below.
            '$1 ' + RESULT_INDEX_ATTR + '="' + resultIndex + '" '
          );
        }
      }

      // Render each group of markup with similar wrapping `nodeName`.
      var renderNodes = createNodesFromMarkup(
        markupListByNodeName.join(''),
        emptyFunction // Do nothing special with <script> tags.
      );

      for (i = 0; i < renderNodes.length; ++i) {
        var renderNode = renderNodes[i];
        if (renderNode.hasAttribute &&
            renderNode.hasAttribute(RESULT_INDEX_ATTR)) {

          resultIndex = +renderNode.getAttribute(RESULT_INDEX_ATTR);
          renderNode.removeAttribute(RESULT_INDEX_ATTR);

          ("production" !== process.env.NODE_ENV ? invariant(
            !resultList.hasOwnProperty(resultIndex),
            'Danger: Assigning to an already-occupied result index.'
          ) : invariant(!resultList.hasOwnProperty(resultIndex)));

          resultList[resultIndex] = renderNode;

          // This should match resultList.length and markupList.length when
          // we're done.
          resultListAssignmentCount += 1;

        } else if ("production" !== process.env.NODE_ENV) {
          console.error(
            "Danger: Discarding unexpected node:",
            renderNode
          );
        }
      }
    }

    // Although resultList was populated out of order, it should now be a dense
    // array.
    ("production" !== process.env.NODE_ENV ? invariant(
      resultListAssignmentCount === resultList.length,
      'Danger: Did not assign to every index of resultList.'
    ) : invariant(resultListAssignmentCount === resultList.length));

    ("production" !== process.env.NODE_ENV ? invariant(
      resultList.length === markupList.length,
      'Danger: Expected markup to render %s nodes, but rendered %s.',
      markupList.length,
      resultList.length
    ) : invariant(resultList.length === markupList.length));

    return resultList;
  },

  /**
   * Replaces a node with a string of markup at its current position within its
   * parent. The markup must render into a single root node.
   *
   * @param {DOMElement} oldChild Child node to replace.
   * @param {string} markup Markup to render in place of the child node.
   * @internal
   */
  dangerouslyReplaceNodeWithMarkup: function(oldChild, markup) {
    ("production" !== process.env.NODE_ENV ? invariant(
      ExecutionEnvironment.canUseDOM,
      'dangerouslyReplaceNodeWithMarkup(...): Cannot render markup in a ' +
      'worker thread. Make sure `window` and `document` are available ' +
      'globally before requiring React when unit testing or use ' +
      'React.renderToString for server rendering.'
    ) : invariant(ExecutionEnvironment.canUseDOM));
    ("production" !== process.env.NODE_ENV ? invariant(markup, 'dangerouslyReplaceNodeWithMarkup(...): Missing markup.') : invariant(markup));
    ("production" !== process.env.NODE_ENV ? invariant(
      oldChild.tagName.toLowerCase() !== 'html',
      'dangerouslyReplaceNodeWithMarkup(...): Cannot replace markup of the ' +
      '<html> node. This is because browser quirks make this unreliable ' +
      'and/or slow. If you want to render to the root you must use ' +
      'server rendering. See renderComponentToString().'
    ) : invariant(oldChild.tagName.toLowerCase() !== 'html'));

    var newChild = createNodesFromMarkup(markup, emptyFunction)[0];
    oldChild.parentNode.replaceChild(newChild, oldChild);
  }

};

module.exports = Danger;

}).call(this,require('_process'))
},{"./ExecutionEnvironment":129,"./createNodesFromMarkup":224,"./emptyFunction":228,"./getMarkupWrap":239,"./invariant":247,"_process":91}],121:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule DefaultEventPluginOrder
 */

"use strict";

 var keyOf = require("./keyOf");

/**
 * Module that is injectable into `EventPluginHub`, that specifies a
 * deterministic ordering of `EventPlugin`s. A convenient way to reason about
 * plugins, without having to package every one of them. This is better than
 * having plugins be ordered in the same order that they are injected because
 * that ordering would be influenced by the packaging order.
 * `ResponderEventPlugin` must occur before `SimpleEventPlugin` so that
 * preventing default on events is convenient in `SimpleEventPlugin` handlers.
 */
var DefaultEventPluginOrder = [
  keyOf({ResponderEventPlugin: null}),
  keyOf({SimpleEventPlugin: null}),
  keyOf({TapEventPlugin: null}),
  keyOf({EnterLeaveEventPlugin: null}),
  keyOf({ChangeEventPlugin: null}),
  keyOf({SelectEventPlugin: null}),
  keyOf({CompositionEventPlugin: null}),
  keyOf({BeforeInputEventPlugin: null}),
  keyOf({AnalyticsEventPlugin: null}),
  keyOf({MobileSafariClickEventPlugin: null})
];

module.exports = DefaultEventPluginOrder;

},{"./keyOf":254}],122:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule EnterLeaveEventPlugin
 * @typechecks static-only
 */

"use strict";

var EventConstants = require("./EventConstants");
var EventPropagators = require("./EventPropagators");
var SyntheticMouseEvent = require("./SyntheticMouseEvent");

var ReactMount = require("./ReactMount");
var keyOf = require("./keyOf");

var topLevelTypes = EventConstants.topLevelTypes;
var getFirstReactDOM = ReactMount.getFirstReactDOM;

var eventTypes = {
  mouseEnter: {
    registrationName: keyOf({onMouseEnter: null}),
    dependencies: [
      topLevelTypes.topMouseOut,
      topLevelTypes.topMouseOver
    ]
  },
  mouseLeave: {
    registrationName: keyOf({onMouseLeave: null}),
    dependencies: [
      topLevelTypes.topMouseOut,
      topLevelTypes.topMouseOver
    ]
  }
};

var extractedEvents = [null, null];

var EnterLeaveEventPlugin = {

  eventTypes: eventTypes,

  /**
   * For almost every interaction we care about, there will be both a top-level
   * `mouseover` and `mouseout` event that occurs. Only use `mouseout` so that
   * we do not extract duplicate events. However, moving the mouse into the
   * browser from outside will not fire a `mouseout` event. In this case, we use
   * the `mouseover` top-level event.
   *
   * @param {string} topLevelType Record from `EventConstants`.
   * @param {DOMEventTarget} topLevelTarget The listening component root node.
   * @param {string} topLevelTargetID ID of `topLevelTarget`.
   * @param {object} nativeEvent Native browser event.
   * @return {*} An accumulation of synthetic events.
   * @see {EventPluginHub.extractEvents}
   */
  extractEvents: function(
      topLevelType,
      topLevelTarget,
      topLevelTargetID,
      nativeEvent) {
    if (topLevelType === topLevelTypes.topMouseOver &&
        (nativeEvent.relatedTarget || nativeEvent.fromElement)) {
      return null;
    }
    if (topLevelType !== topLevelTypes.topMouseOut &&
        topLevelType !== topLevelTypes.topMouseOver) {
      // Must not be a mouse in or mouse out - ignoring.
      return null;
    }

    var win;
    if (topLevelTarget.window === topLevelTarget) {
      // `topLevelTarget` is probably a window object.
      win = topLevelTarget;
    } else {
      // TODO: Figure out why `ownerDocument` is sometimes undefined in IE8.
      var doc = topLevelTarget.ownerDocument;
      if (doc) {
        win = doc.defaultView || doc.parentWindow;
      } else {
        win = window;
      }
    }

    var from, to;
    if (topLevelType === topLevelTypes.topMouseOut) {
      from = topLevelTarget;
      to =
        getFirstReactDOM(nativeEvent.relatedTarget || nativeEvent.toElement) ||
        win;
    } else {
      from = win;
      to = topLevelTarget;
    }

    if (from === to) {
      // Nothing pertains to our managed components.
      return null;
    }

    var fromID = from ? ReactMount.getID(from) : '';
    var toID = to ? ReactMount.getID(to) : '';

    var leave = SyntheticMouseEvent.getPooled(
      eventTypes.mouseLeave,
      fromID,
      nativeEvent
    );
    leave.type = 'mouseleave';
    leave.target = from;
    leave.relatedTarget = to;

    var enter = SyntheticMouseEvent.getPooled(
      eventTypes.mouseEnter,
      toID,
      nativeEvent
    );
    enter.type = 'mouseenter';
    enter.target = to;
    enter.relatedTarget = from;

    EventPropagators.accumulateEnterLeaveDispatches(leave, enter, fromID, toID);

    extractedEvents[0] = leave;
    extractedEvents[1] = enter;

    return extractedEvents;
  }

};

module.exports = EnterLeaveEventPlugin;

},{"./EventConstants":123,"./EventPropagators":128,"./ReactMount":176,"./SyntheticMouseEvent":210,"./keyOf":254}],123:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule EventConstants
 */

"use strict";

var keyMirror = require("./keyMirror");

var PropagationPhases = keyMirror({bubbled: null, captured: null});

/**
 * Types of raw signals from the browser caught at the top level.
 */
var topLevelTypes = keyMirror({
  topBlur: null,
  topChange: null,
  topClick: null,
  topCompositionEnd: null,
  topCompositionStart: null,
  topCompositionUpdate: null,
  topContextMenu: null,
  topCopy: null,
  topCut: null,
  topDoubleClick: null,
  topDrag: null,
  topDragEnd: null,
  topDragEnter: null,
  topDragExit: null,
  topDragLeave: null,
  topDragOver: null,
  topDragStart: null,
  topDrop: null,
  topError: null,
  topFocus: null,
  topInput: null,
  topKeyDown: null,
  topKeyPress: null,
  topKeyUp: null,
  topLoad: null,
  topMouseDown: null,
  topMouseMove: null,
  topMouseOut: null,
  topMouseOver: null,
  topMouseUp: null,
  topPaste: null,
  topReset: null,
  topScroll: null,
  topSelectionChange: null,
  topSubmit: null,
  topTextInput: null,
  topTouchCancel: null,
  topTouchEnd: null,
  topTouchMove: null,
  topTouchStart: null,
  topWheel: null
});

var EventConstants = {
  topLevelTypes: topLevelTypes,
  PropagationPhases: PropagationPhases
};

module.exports = EventConstants;

},{"./keyMirror":253}],124:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014 Facebook, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * @providesModule EventListener
 * @typechecks
 */

var emptyFunction = require("./emptyFunction");

/**
 * Upstream version of event listener. Does not take into account specific
 * nature of platform.
 */
var EventListener = {
  /**
   * Listen to DOM events during the bubble phase.
   *
   * @param {DOMEventTarget} target DOM element to register listener on.
   * @param {string} eventType Event type, e.g. 'click' or 'mouseover'.
   * @param {function} callback Callback function.
   * @return {object} Object with a `remove` method.
   */
  listen: function(target, eventType, callback) {
    if (target.addEventListener) {
      target.addEventListener(eventType, callback, false);
      return {
        remove: function() {
          target.removeEventListener(eventType, callback, false);
        }
      };
    } else if (target.attachEvent) {
      target.attachEvent('on' + eventType, callback);
      return {
        remove: function() {
          target.detachEvent('on' + eventType, callback);
        }
      };
    }
  },

  /**
   * Listen to DOM events during the capture phase.
   *
   * @param {DOMEventTarget} target DOM element to register listener on.
   * @param {string} eventType Event type, e.g. 'click' or 'mouseover'.
   * @param {function} callback Callback function.
   * @return {object} Object with a `remove` method.
   */
  capture: function(target, eventType, callback) {
    if (!target.addEventListener) {
      if ("production" !== process.env.NODE_ENV) {
        console.error(
          'Attempted to listen to events during the capture phase on a ' +
          'browser that does not support the capture phase. Your application ' +
          'will not receive some events.'
        );
      }
      return {
        remove: emptyFunction
      };
    } else {
      target.addEventListener(eventType, callback, true);
      return {
        remove: function() {
          target.removeEventListener(eventType, callback, true);
        }
      };
    }
  },

  registerDefault: function() {}
};

module.exports = EventListener;

}).call(this,require('_process'))
},{"./emptyFunction":228,"_process":91}],125:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule EventPluginHub
 */

"use strict";

var EventPluginRegistry = require("./EventPluginRegistry");
var EventPluginUtils = require("./EventPluginUtils");

var accumulateInto = require("./accumulateInto");
var forEachAccumulated = require("./forEachAccumulated");
var invariant = require("./invariant");

/**
 * Internal store for event listeners
 */
var listenerBank = {};

/**
 * Internal queue of events that have accumulated their dispatches and are
 * waiting to have their dispatches executed.
 */
var eventQueue = null;

/**
 * Dispatches an event and releases it back into the pool, unless persistent.
 *
 * @param {?object} event Synthetic event to be dispatched.
 * @private
 */
var executeDispatchesAndRelease = function(event) {
  if (event) {
    var executeDispatch = EventPluginUtils.executeDispatch;
    // Plugins can provide custom behavior when dispatching events.
    var PluginModule = EventPluginRegistry.getPluginModuleForEvent(event);
    if (PluginModule && PluginModule.executeDispatch) {
      executeDispatch = PluginModule.executeDispatch;
    }
    EventPluginUtils.executeDispatchesInOrder(event, executeDispatch);

    if (!event.isPersistent()) {
      event.constructor.release(event);
    }
  }
};

/**
 * - `InstanceHandle`: [required] Module that performs logical traversals of DOM
 *   hierarchy given ids of the logical DOM elements involved.
 */
var InstanceHandle = null;

function validateInstanceHandle() {
  var invalid = !InstanceHandle||
    !InstanceHandle.traverseTwoPhase ||
    !InstanceHandle.traverseEnterLeave;
  if (invalid) {
    throw new Error('InstanceHandle not injected before use!');
  }
}

/**
 * This is a unified interface for event plugins to be installed and configured.
 *
 * Event plugins can implement the following properties:
 *
 *   `extractEvents` {function(string, DOMEventTarget, string, object): *}
 *     Required. When a top-level event is fired, this method is expected to
 *     extract synthetic events that will in turn be queued and dispatched.
 *
 *   `eventTypes` {object}
 *     Optional, plugins that fire events must publish a mapping of registration
 *     names that are used to register listeners. Values of this mapping must
 *     be objects that contain `registrationName` or `phasedRegistrationNames`.
 *
 *   `executeDispatch` {function(object, function, string)}
 *     Optional, allows plugins to override how an event gets dispatched. By
 *     default, the listener is simply invoked.
 *
 * Each plugin that is injected into `EventsPluginHub` is immediately operable.
 *
 * @public
 */
var EventPluginHub = {

  /**
   * Methods for injecting dependencies.
   */
  injection: {

    /**
     * @param {object} InjectedMount
     * @public
     */
    injectMount: EventPluginUtils.injection.injectMount,

    /**
     * @param {object} InjectedInstanceHandle
     * @public
     */
    injectInstanceHandle: function(InjectedInstanceHandle) {
      InstanceHandle = InjectedInstanceHandle;
      if ("production" !== process.env.NODE_ENV) {
        validateInstanceHandle();
      }
    },

    getInstanceHandle: function() {
      if ("production" !== process.env.NODE_ENV) {
        validateInstanceHandle();
      }
      return InstanceHandle;
    },

    /**
     * @param {array} InjectedEventPluginOrder
     * @public
     */
    injectEventPluginOrder: EventPluginRegistry.injectEventPluginOrder,

    /**
     * @param {object} injectedNamesToPlugins Map from names to plugin modules.
     */
    injectEventPluginsByName: EventPluginRegistry.injectEventPluginsByName

  },

  eventNameDispatchConfigs: EventPluginRegistry.eventNameDispatchConfigs,

  registrationNameModules: EventPluginRegistry.registrationNameModules,

  /**
   * Stores `listener` at `listenerBank[registrationName][id]`. Is idempotent.
   *
   * @param {string} id ID of the DOM element.
   * @param {string} registrationName Name of listener (e.g. `onClick`).
   * @param {?function} listener The callback to store.
   */
  putListener: function(id, registrationName, listener) {
    ("production" !== process.env.NODE_ENV ? invariant(
      !listener || typeof listener === 'function',
      'Expected %s listener to be a function, instead got type %s',
      registrationName, typeof listener
    ) : invariant(!listener || typeof listener === 'function'));

    var bankForRegistrationName =
      listenerBank[registrationName] || (listenerBank[registrationName] = {});
    bankForRegistrationName[id] = listener;
  },

  /**
   * @param {string} id ID of the DOM element.
   * @param {string} registrationName Name of listener (e.g. `onClick`).
   * @return {?function} The stored callback.
   */
  getListener: function(id, registrationName) {
    var bankForRegistrationName = listenerBank[registrationName];
    return bankForRegistrationName && bankForRegistrationName[id];
  },

  /**
   * Deletes a listener from the registration bank.
   *
   * @param {string} id ID of the DOM element.
   * @param {string} registrationName Name of listener (e.g. `onClick`).
   */
  deleteListener: function(id, registrationName) {
    var bankForRegistrationName = listenerBank[registrationName];
    if (bankForRegistrationName) {
      delete bankForRegistrationName[id];
    }
  },

  /**
   * Deletes all listeners for the DOM element with the supplied ID.
   *
   * @param {string} id ID of the DOM element.
   */
  deleteAllListeners: function(id) {
    for (var registrationName in listenerBank) {
      delete listenerBank[registrationName][id];
    }
  },

  /**
   * Allows registered plugins an opportunity to extract events from top-level
   * native browser events.
   *
   * @param {string} topLevelType Record from `EventConstants`.
   * @param {DOMEventTarget} topLevelTarget The listening component root node.
   * @param {string} topLevelTargetID ID of `topLevelTarget`.
   * @param {object} nativeEvent Native browser event.
   * @return {*} An accumulation of synthetic events.
   * @internal
   */
  extractEvents: function(
      topLevelType,
      topLevelTarget,
      topLevelTargetID,
      nativeEvent) {
    var events;
    var plugins = EventPluginRegistry.plugins;
    for (var i = 0, l = plugins.length; i < l; i++) {
      // Not every plugin in the ordering may be loaded at runtime.
      var possiblePlugin = plugins[i];
      if (possiblePlugin) {
        var extractedEvents = possiblePlugin.extractEvents(
          topLevelType,
          topLevelTarget,
          topLevelTargetID,
          nativeEvent
        );
        if (extractedEvents) {
          events = accumulateInto(events, extractedEvents);
        }
      }
    }
    return events;
  },

  /**
   * Enqueues a synthetic event that should be dispatched when
   * `processEventQueue` is invoked.
   *
   * @param {*} events An accumulation of synthetic events.
   * @internal
   */
  enqueueEvents: function(events) {
    if (events) {
      eventQueue = accumulateInto(eventQueue, events);
    }
  },

  /**
   * Dispatches all synthetic events on the event queue.
   *
   * @internal
   */
  processEventQueue: function() {
    // Set `eventQueue` to null before processing it so that we can tell if more
    // events get enqueued while processing.
    var processingEventQueue = eventQueue;
    eventQueue = null;
    forEachAccumulated(processingEventQueue, executeDispatchesAndRelease);
    ("production" !== process.env.NODE_ENV ? invariant(
      !eventQueue,
      'processEventQueue(): Additional events were enqueued while processing ' +
      'an event queue. Support for this has not yet been implemented.'
    ) : invariant(!eventQueue));
  },

  /**
   * These are needed for tests only. Do not use!
   */
  __purge: function() {
    listenerBank = {};
  },

  __getListenerBank: function() {
    return listenerBank;
  }

};

module.exports = EventPluginHub;

}).call(this,require('_process'))
},{"./EventPluginRegistry":126,"./EventPluginUtils":127,"./accumulateInto":216,"./forEachAccumulated":233,"./invariant":247,"_process":91}],126:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule EventPluginRegistry
 * @typechecks static-only
 */

"use strict";

var invariant = require("./invariant");

/**
 * Injectable ordering of event plugins.
 */
var EventPluginOrder = null;

/**
 * Injectable mapping from names to event plugin modules.
 */
var namesToPlugins = {};

/**
 * Recomputes the plugin list using the injected plugins and plugin ordering.
 *
 * @private
 */
function recomputePluginOrdering() {
  if (!EventPluginOrder) {
    // Wait until an `EventPluginOrder` is injected.
    return;
  }
  for (var pluginName in namesToPlugins) {
    var PluginModule = namesToPlugins[pluginName];
    var pluginIndex = EventPluginOrder.indexOf(pluginName);
    ("production" !== process.env.NODE_ENV ? invariant(
      pluginIndex > -1,
      'EventPluginRegistry: Cannot inject event plugins that do not exist in ' +
      'the plugin ordering, `%s`.',
      pluginName
    ) : invariant(pluginIndex > -1));
    if (EventPluginRegistry.plugins[pluginIndex]) {
      continue;
    }
    ("production" !== process.env.NODE_ENV ? invariant(
      PluginModule.extractEvents,
      'EventPluginRegistry: Event plugins must implement an `extractEvents` ' +
      'method, but `%s` does not.',
      pluginName
    ) : invariant(PluginModule.extractEvents));
    EventPluginRegistry.plugins[pluginIndex] = PluginModule;
    var publishedEvents = PluginModule.eventTypes;
    for (var eventName in publishedEvents) {
      ("production" !== process.env.NODE_ENV ? invariant(
        publishEventForPlugin(
          publishedEvents[eventName],
          PluginModule,
          eventName
        ),
        'EventPluginRegistry: Failed to publish event `%s` for plugin `%s`.',
        eventName,
        pluginName
      ) : invariant(publishEventForPlugin(
        publishedEvents[eventName],
        PluginModule,
        eventName
      )));
    }
  }
}

/**
 * Publishes an event so that it can be dispatched by the supplied plugin.
 *
 * @param {object} dispatchConfig Dispatch configuration for the event.
 * @param {object} PluginModule Plugin publishing the event.
 * @return {boolean} True if the event was successfully published.
 * @private
 */
function publishEventForPlugin(dispatchConfig, PluginModule, eventName) {
  ("production" !== process.env.NODE_ENV ? invariant(
    !EventPluginRegistry.eventNameDispatchConfigs.hasOwnProperty(eventName),
    'EventPluginHub: More than one plugin attempted to publish the same ' +
    'event name, `%s`.',
    eventName
  ) : invariant(!EventPluginRegistry.eventNameDispatchConfigs.hasOwnProperty(eventName)));
  EventPluginRegistry.eventNameDispatchConfigs[eventName] = dispatchConfig;

  var phasedRegistrationNames = dispatchConfig.phasedRegistrationNames;
  if (phasedRegistrationNames) {
    for (var phaseName in phasedRegistrationNames) {
      if (phasedRegistrationNames.hasOwnProperty(phaseName)) {
        var phasedRegistrationName = phasedRegistrationNames[phaseName];
        publishRegistrationName(
          phasedRegistrationName,
          PluginModule,
          eventName
        );
      }
    }
    return true;
  } else if (dispatchConfig.registrationName) {
    publishRegistrationName(
      dispatchConfig.registrationName,
      PluginModule,
      eventName
    );
    return true;
  }
  return false;
}

/**
 * Publishes a registration name that is used to identify dispatched events and
 * can be used with `EventPluginHub.putListener` to register listeners.
 *
 * @param {string} registrationName Registration name to add.
 * @param {object} PluginModule Plugin publishing the event.
 * @private
 */
function publishRegistrationName(registrationName, PluginModule, eventName) {
  ("production" !== process.env.NODE_ENV ? invariant(
    !EventPluginRegistry.registrationNameModules[registrationName],
    'EventPluginHub: More than one plugin attempted to publish the same ' +
    'registration name, `%s`.',
    registrationName
  ) : invariant(!EventPluginRegistry.registrationNameModules[registrationName]));
  EventPluginRegistry.registrationNameModules[registrationName] = PluginModule;
  EventPluginRegistry.registrationNameDependencies[registrationName] =
    PluginModule.eventTypes[eventName].dependencies;
}

/**
 * Registers plugins so that they can extract and dispatch events.
 *
 * @see {EventPluginHub}
 */
var EventPluginRegistry = {

  /**
   * Ordered list of injected plugins.
   */
  plugins: [],

  /**
   * Mapping from event name to dispatch config
   */
  eventNameDispatchConfigs: {},

  /**
   * Mapping from registration name to plugin module
   */
  registrationNameModules: {},

  /**
   * Mapping from registration name to event name
   */
  registrationNameDependencies: {},

  /**
   * Injects an ordering of plugins (by plugin name). This allows the ordering
   * to be decoupled from injection of the actual plugins so that ordering is
   * always deterministic regardless of packaging, on-the-fly injection, etc.
   *
   * @param {array} InjectedEventPluginOrder
   * @internal
   * @see {EventPluginHub.injection.injectEventPluginOrder}
   */
  injectEventPluginOrder: function(InjectedEventPluginOrder) {
    ("production" !== process.env.NODE_ENV ? invariant(
      !EventPluginOrder,
      'EventPluginRegistry: Cannot inject event plugin ordering more than ' +
      'once. You are likely trying to load more than one copy of React.'
    ) : invariant(!EventPluginOrder));
    // Clone the ordering so it cannot be dynamically mutated.
    EventPluginOrder = Array.prototype.slice.call(InjectedEventPluginOrder);
    recomputePluginOrdering();
  },

  /**
   * Injects plugins to be used by `EventPluginHub`. The plugin names must be
   * in the ordering injected by `injectEventPluginOrder`.
   *
   * Plugins can be injected as part of page initialization or on-the-fly.
   *
   * @param {object} injectedNamesToPlugins Map from names to plugin modules.
   * @internal
   * @see {EventPluginHub.injection.injectEventPluginsByName}
   */
  injectEventPluginsByName: function(injectedNamesToPlugins) {
    var isOrderingDirty = false;
    for (var pluginName in injectedNamesToPlugins) {
      if (!injectedNamesToPlugins.hasOwnProperty(pluginName)) {
        continue;
      }
      var PluginModule = injectedNamesToPlugins[pluginName];
      if (!namesToPlugins.hasOwnProperty(pluginName) ||
          namesToPlugins[pluginName] !== PluginModule) {
        ("production" !== process.env.NODE_ENV ? invariant(
          !namesToPlugins[pluginName],
          'EventPluginRegistry: Cannot inject two different event plugins ' +
          'using the same name, `%s`.',
          pluginName
        ) : invariant(!namesToPlugins[pluginName]));
        namesToPlugins[pluginName] = PluginModule;
        isOrderingDirty = true;
      }
    }
    if (isOrderingDirty) {
      recomputePluginOrdering();
    }
  },

  /**
   * Looks up the plugin for the supplied event.
   *
   * @param {object} event A synthetic event.
   * @return {?object} The plugin that created the supplied event.
   * @internal
   */
  getPluginModuleForEvent: function(event) {
    var dispatchConfig = event.dispatchConfig;
    if (dispatchConfig.registrationName) {
      return EventPluginRegistry.registrationNameModules[
        dispatchConfig.registrationName
      ] || null;
    }
    for (var phase in dispatchConfig.phasedRegistrationNames) {
      if (!dispatchConfig.phasedRegistrationNames.hasOwnProperty(phase)) {
        continue;
      }
      var PluginModule = EventPluginRegistry.registrationNameModules[
        dispatchConfig.phasedRegistrationNames[phase]
      ];
      if (PluginModule) {
        return PluginModule;
      }
    }
    return null;
  },

  /**
   * Exposed for unit testing.
   * @private
   */
  _resetEventPlugins: function() {
    EventPluginOrder = null;
    for (var pluginName in namesToPlugins) {
      if (namesToPlugins.hasOwnProperty(pluginName)) {
        delete namesToPlugins[pluginName];
      }
    }
    EventPluginRegistry.plugins.length = 0;

    var eventNameDispatchConfigs = EventPluginRegistry.eventNameDispatchConfigs;
    for (var eventName in eventNameDispatchConfigs) {
      if (eventNameDispatchConfigs.hasOwnProperty(eventName)) {
        delete eventNameDispatchConfigs[eventName];
      }
    }

    var registrationNameModules = EventPluginRegistry.registrationNameModules;
    for (var registrationName in registrationNameModules) {
      if (registrationNameModules.hasOwnProperty(registrationName)) {
        delete registrationNameModules[registrationName];
      }
    }
  }

};

module.exports = EventPluginRegistry;

}).call(this,require('_process'))
},{"./invariant":247,"_process":91}],127:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule EventPluginUtils
 */

"use strict";

var EventConstants = require("./EventConstants");

var invariant = require("./invariant");

/**
 * Injected dependencies:
 */

/**
 * - `Mount`: [required] Module that can convert between React dom IDs and
 *   actual node references.
 */
var injection = {
  Mount: null,
  injectMount: function(InjectedMount) {
    injection.Mount = InjectedMount;
    if ("production" !== process.env.NODE_ENV) {
      ("production" !== process.env.NODE_ENV ? invariant(
        InjectedMount && InjectedMount.getNode,
        'EventPluginUtils.injection.injectMount(...): Injected Mount module ' +
        'is missing getNode.'
      ) : invariant(InjectedMount && InjectedMount.getNode));
    }
  }
};

var topLevelTypes = EventConstants.topLevelTypes;

function isEndish(topLevelType) {
  return topLevelType === topLevelTypes.topMouseUp ||
         topLevelType === topLevelTypes.topTouchEnd ||
         topLevelType === topLevelTypes.topTouchCancel;
}

function isMoveish(topLevelType) {
  return topLevelType === topLevelTypes.topMouseMove ||
         topLevelType === topLevelTypes.topTouchMove;
}
function isStartish(topLevelType) {
  return topLevelType === topLevelTypes.topMouseDown ||
         topLevelType === topLevelTypes.topTouchStart;
}


var validateEventDispatches;
if ("production" !== process.env.NODE_ENV) {
  validateEventDispatches = function(event) {
    var dispatchListeners = event._dispatchListeners;
    var dispatchIDs = event._dispatchIDs;

    var listenersIsArr = Array.isArray(dispatchListeners);
    var idsIsArr = Array.isArray(dispatchIDs);
    var IDsLen = idsIsArr ? dispatchIDs.length : dispatchIDs ? 1 : 0;
    var listenersLen = listenersIsArr ?
      dispatchListeners.length :
      dispatchListeners ? 1 : 0;

    ("production" !== process.env.NODE_ENV ? invariant(
      idsIsArr === listenersIsArr && IDsLen === listenersLen,
      'EventPluginUtils: Invalid `event`.'
    ) : invariant(idsIsArr === listenersIsArr && IDsLen === listenersLen));
  };
}

/**
 * Invokes `cb(event, listener, id)`. Avoids using call if no scope is
 * provided. The `(listener,id)` pair effectively forms the "dispatch" but are
 * kept separate to conserve memory.
 */
function forEachEventDispatch(event, cb) {
  var dispatchListeners = event._dispatchListeners;
  var dispatchIDs = event._dispatchIDs;
  if ("production" !== process.env.NODE_ENV) {
    validateEventDispatches(event);
  }
  if (Array.isArray(dispatchListeners)) {
    for (var i = 0; i < dispatchListeners.length; i++) {
      if (event.isPropagationStopped()) {
        break;
      }
      // Listeners and IDs are two parallel arrays that are always in sync.
      cb(event, dispatchListeners[i], dispatchIDs[i]);
    }
  } else if (dispatchListeners) {
    cb(event, dispatchListeners, dispatchIDs);
  }
}

/**
 * Default implementation of PluginModule.executeDispatch().
 * @param {SyntheticEvent} SyntheticEvent to handle
 * @param {function} Application-level callback
 * @param {string} domID DOM id to pass to the callback.
 */
function executeDispatch(event, listener, domID) {
  event.currentTarget = injection.Mount.getNode(domID);
  var returnValue = listener(event, domID);
  event.currentTarget = null;
  return returnValue;
}

/**
 * Standard/simple iteration through an event's collected dispatches.
 */
function executeDispatchesInOrder(event, executeDispatch) {
  forEachEventDispatch(event, executeDispatch);
  event._dispatchListeners = null;
  event._dispatchIDs = null;
}

/**
 * Standard/simple iteration through an event's collected dispatches, but stops
 * at the first dispatch execution returning true, and returns that id.
 *
 * @return id of the first dispatch execution who's listener returns true, or
 * null if no listener returned true.
 */
function executeDispatchesInOrderStopAtTrueImpl(event) {
  var dispatchListeners = event._dispatchListeners;
  var dispatchIDs = event._dispatchIDs;
  if ("production" !== process.env.NODE_ENV) {
    validateEventDispatches(event);
  }
  if (Array.isArray(dispatchListeners)) {
    for (var i = 0; i < dispatchListeners.length; i++) {
      if (event.isPropagationStopped()) {
        break;
      }
      // Listeners and IDs are two parallel arrays that are always in sync.
      if (dispatchListeners[i](event, dispatchIDs[i])) {
        return dispatchIDs[i];
      }
    }
  } else if (dispatchListeners) {
    if (dispatchListeners(event, dispatchIDs)) {
      return dispatchIDs;
    }
  }
  return null;
}

/**
 * @see executeDispatchesInOrderStopAtTrueImpl
 */
function executeDispatchesInOrderStopAtTrue(event) {
  var ret = executeDispatchesInOrderStopAtTrueImpl(event);
  event._dispatchIDs = null;
  event._dispatchListeners = null;
  return ret;
}

/**
 * Execution of a "direct" dispatch - there must be at most one dispatch
 * accumulated on the event or it is considered an error. It doesn't really make
 * sense for an event with multiple dispatches (bubbled) to keep track of the
 * return values at each dispatch execution, but it does tend to make sense when
 * dealing with "direct" dispatches.
 *
 * @return The return value of executing the single dispatch.
 */
function executeDirectDispatch(event) {
  if ("production" !== process.env.NODE_ENV) {
    validateEventDispatches(event);
  }
  var dispatchListener = event._dispatchListeners;
  var dispatchID = event._dispatchIDs;
  ("production" !== process.env.NODE_ENV ? invariant(
    !Array.isArray(dispatchListener),
    'executeDirectDispatch(...): Invalid `event`.'
  ) : invariant(!Array.isArray(dispatchListener)));
  var res = dispatchListener ?
    dispatchListener(event, dispatchID) :
    null;
  event._dispatchListeners = null;
  event._dispatchIDs = null;
  return res;
}

/**
 * @param {SyntheticEvent} event
 * @return {bool} True iff number of dispatches accumulated is greater than 0.
 */
function hasDispatches(event) {
  return !!event._dispatchListeners;
}

/**
 * General utilities that are useful in creating custom Event Plugins.
 */
var EventPluginUtils = {
  isEndish: isEndish,
  isMoveish: isMoveish,
  isStartish: isStartish,

  executeDirectDispatch: executeDirectDispatch,
  executeDispatch: executeDispatch,
  executeDispatchesInOrder: executeDispatchesInOrder,
  executeDispatchesInOrderStopAtTrue: executeDispatchesInOrderStopAtTrue,
  hasDispatches: hasDispatches,
  injection: injection,
  useTouchEvents: false
};

module.exports = EventPluginUtils;

}).call(this,require('_process'))
},{"./EventConstants":123,"./invariant":247,"_process":91}],128:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule EventPropagators
 */

"use strict";

var EventConstants = require("./EventConstants");
var EventPluginHub = require("./EventPluginHub");

var accumulateInto = require("./accumulateInto");
var forEachAccumulated = require("./forEachAccumulated");

var PropagationPhases = EventConstants.PropagationPhases;
var getListener = EventPluginHub.getListener;

/**
 * Some event types have a notion of different registration names for different
 * "phases" of propagation. This finds listeners by a given phase.
 */
function listenerAtPhase(id, event, propagationPhase) {
  var registrationName =
    event.dispatchConfig.phasedRegistrationNames[propagationPhase];
  return getListener(id, registrationName);
}

/**
 * Tags a `SyntheticEvent` with dispatched listeners. Creating this function
 * here, allows us to not have to bind or create functions for each event.
 * Mutating the event's members allows us to not have to create a wrapping
 * "dispatch" object that pairs the event with the listener.
 */
function accumulateDirectionalDispatches(domID, upwards, event) {
  if ("production" !== process.env.NODE_ENV) {
    if (!domID) {
      throw new Error('Dispatching id must not be null');
    }
  }
  var phase = upwards ? PropagationPhases.bubbled : PropagationPhases.captured;
  var listener = listenerAtPhase(domID, event, phase);
  if (listener) {
    event._dispatchListeners =
      accumulateInto(event._dispatchListeners, listener);
    event._dispatchIDs = accumulateInto(event._dispatchIDs, domID);
  }
}

/**
 * Collect dispatches (must be entirely collected before dispatching - see unit
 * tests). Lazily allocate the array to conserve memory.  We must loop through
 * each event and perform the traversal for each one. We can not perform a
 * single traversal for the entire collection of events because each event may
 * have a different target.
 */
function accumulateTwoPhaseDispatchesSingle(event) {
  if (event && event.dispatchConfig.phasedRegistrationNames) {
    EventPluginHub.injection.getInstanceHandle().traverseTwoPhase(
      event.dispatchMarker,
      accumulateDirectionalDispatches,
      event
    );
  }
}


/**
 * Accumulates without regard to direction, does not look for phased
 * registration names. Same as `accumulateDirectDispatchesSingle` but without
 * requiring that the `dispatchMarker` be the same as the dispatched ID.
 */
function accumulateDispatches(id, ignoredDirection, event) {
  if (event && event.dispatchConfig.registrationName) {
    var registrationName = event.dispatchConfig.registrationName;
    var listener = getListener(id, registrationName);
    if (listener) {
      event._dispatchListeners =
        accumulateInto(event._dispatchListeners, listener);
      event._dispatchIDs = accumulateInto(event._dispatchIDs, id);
    }
  }
}

/**
 * Accumulates dispatches on an `SyntheticEvent`, but only for the
 * `dispatchMarker`.
 * @param {SyntheticEvent} event
 */
function accumulateDirectDispatchesSingle(event) {
  if (event && event.dispatchConfig.registrationName) {
    accumulateDispatches(event.dispatchMarker, null, event);
  }
}

function accumulateTwoPhaseDispatches(events) {
  forEachAccumulated(events, accumulateTwoPhaseDispatchesSingle);
}

function accumulateEnterLeaveDispatches(leave, enter, fromID, toID) {
  EventPluginHub.injection.getInstanceHandle().traverseEnterLeave(
    fromID,
    toID,
    accumulateDispatches,
    leave,
    enter
  );
}


function accumulateDirectDispatches(events) {
  forEachAccumulated(events, accumulateDirectDispatchesSingle);
}



/**
 * A small set of propagation patterns, each of which will accept a small amount
 * of information, and generate a set of "dispatch ready event objects" - which
 * are sets of events that have already been annotated with a set of dispatched
 * listener functions/ids. The API is designed this way to discourage these
 * propagation strategies from actually executing the dispatches, since we
 * always want to collect the entire set of dispatches before executing event a
 * single one.
 *
 * @constructor EventPropagators
 */
var EventPropagators = {
  accumulateTwoPhaseDispatches: accumulateTwoPhaseDispatches,
  accumulateDirectDispatches: accumulateDirectDispatches,
  accumulateEnterLeaveDispatches: accumulateEnterLeaveDispatches
};

module.exports = EventPropagators;

}).call(this,require('_process'))
},{"./EventConstants":123,"./EventPluginHub":125,"./accumulateInto":216,"./forEachAccumulated":233,"_process":91}],129:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ExecutionEnvironment
 */

/*jslint evil: true */

"use strict";

var canUseDOM = !!(
  typeof window !== 'undefined' &&
  window.document &&
  window.document.createElement
);

/**
 * Simple, lightweight module assisting with the detection and context of
 * Worker. Helps avoid circular dependencies and allows code to reason about
 * whether or not they are in a Worker, even if they never include the main
 * `ReactWorker` dependency.
 */
var ExecutionEnvironment = {

  canUseDOM: canUseDOM,

  canUseWorkers: typeof Worker !== 'undefined',

  canUseEventListeners:
    canUseDOM && !!(window.addEventListener || window.attachEvent),

  canUseViewport: canUseDOM && !!window.screen,

  isInWorker: !canUseDOM // For now, this is true - might change in the future.

};

module.exports = ExecutionEnvironment;

},{}],130:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule HTMLDOMPropertyConfig
 */

/*jslint bitwise: true*/

"use strict";

var DOMProperty = require("./DOMProperty");
var ExecutionEnvironment = require("./ExecutionEnvironment");

var MUST_USE_ATTRIBUTE = DOMProperty.injection.MUST_USE_ATTRIBUTE;
var MUST_USE_PROPERTY = DOMProperty.injection.MUST_USE_PROPERTY;
var HAS_BOOLEAN_VALUE = DOMProperty.injection.HAS_BOOLEAN_VALUE;
var HAS_SIDE_EFFECTS = DOMProperty.injection.HAS_SIDE_EFFECTS;
var HAS_NUMERIC_VALUE = DOMProperty.injection.HAS_NUMERIC_VALUE;
var HAS_POSITIVE_NUMERIC_VALUE =
  DOMProperty.injection.HAS_POSITIVE_NUMERIC_VALUE;
var HAS_OVERLOADED_BOOLEAN_VALUE =
  DOMProperty.injection.HAS_OVERLOADED_BOOLEAN_VALUE;

var hasSVG;
if (ExecutionEnvironment.canUseDOM) {
  var implementation = document.implementation;
  hasSVG = (
    implementation &&
    implementation.hasFeature &&
    implementation.hasFeature(
      'http://www.w3.org/TR/SVG11/feature#BasicStructure',
      '1.1'
    )
  );
}


var HTMLDOMPropertyConfig = {
  isCustomAttribute: RegExp.prototype.test.bind(
    /^(data|aria)-[a-z_][a-z\d_.\-]*$/
  ),
  Properties: {
    /**
     * Standard Properties
     */
    accept: null,
    acceptCharset: null,
    accessKey: null,
    action: null,
    allowFullScreen: MUST_USE_ATTRIBUTE | HAS_BOOLEAN_VALUE,
    allowTransparency: MUST_USE_ATTRIBUTE,
    alt: null,
    async: HAS_BOOLEAN_VALUE,
    autoComplete: null,
    // autoFocus is polyfilled/normalized by AutoFocusMixin
    // autoFocus: HAS_BOOLEAN_VALUE,
    autoPlay: HAS_BOOLEAN_VALUE,
    cellPadding: null,
    cellSpacing: null,
    charSet: MUST_USE_ATTRIBUTE,
    checked: MUST_USE_PROPERTY | HAS_BOOLEAN_VALUE,
    classID: MUST_USE_ATTRIBUTE,
    // To set className on SVG elements, it's necessary to use .setAttribute;
    // this works on HTML elements too in all browsers except IE8. Conveniently,
    // IE8 doesn't support SVG and so we can simply use the attribute in
    // browsers that support SVG and the property in browsers that don't,
    // regardless of whether the element is HTML or SVG.
    className: hasSVG ? MUST_USE_ATTRIBUTE : MUST_USE_PROPERTY,
    cols: MUST_USE_ATTRIBUTE | HAS_POSITIVE_NUMERIC_VALUE,
    colSpan: null,
    content: null,
    contentEditable: null,
    contextMenu: MUST_USE_ATTRIBUTE,
    controls: MUST_USE_PROPERTY | HAS_BOOLEAN_VALUE,
    coords: null,
    crossOrigin: null,
    data: null, // For `<object />` acts as `src`.
    dateTime: MUST_USE_ATTRIBUTE,
    defer: HAS_BOOLEAN_VALUE,
    dir: null,
    disabled: MUST_USE_ATTRIBUTE | HAS_BOOLEAN_VALUE,
    download: HAS_OVERLOADED_BOOLEAN_VALUE,
    draggable: null,
    encType: null,
    form: MUST_USE_ATTRIBUTE,
    formAction: MUST_USE_ATTRIBUTE,
    formEncType: MUST_USE_ATTRIBUTE,
    formMethod: MUST_USE_ATTRIBUTE,
    formNoValidate: HAS_BOOLEAN_VALUE,
    formTarget: MUST_USE_ATTRIBUTE,
    frameBorder: MUST_USE_ATTRIBUTE,
    height: MUST_USE_ATTRIBUTE,
    hidden: MUST_USE_ATTRIBUTE | HAS_BOOLEAN_VALUE,
    href: null,
    hrefLang: null,
    htmlFor: null,
    httpEquiv: null,
    icon: null,
    id: MUST_USE_PROPERTY,
    label: null,
    lang: null,
    list: MUST_USE_ATTRIBUTE,
    loop: MUST_USE_PROPERTY | HAS_BOOLEAN_VALUE,
    manifest: MUST_USE_ATTRIBUTE,
    marginHeight: null,
    marginWidth: null,
    max: null,
    maxLength: MUST_USE_ATTRIBUTE,
    media: MUST_USE_ATTRIBUTE,
    mediaGroup: null,
    method: null,
    min: null,
    multiple: MUST_USE_PROPERTY | HAS_BOOLEAN_VALUE,
    muted: MUST_USE_PROPERTY | HAS_BOOLEAN_VALUE,
    name: null,
    noValidate: HAS_BOOLEAN_VALUE,
    open: null,
    pattern: null,
    placeholder: null,
    poster: null,
    preload: null,
    radioGroup: null,
    readOnly: MUST_USE_PROPERTY | HAS_BOOLEAN_VALUE,
    rel: null,
    required: HAS_BOOLEAN_VALUE,
    role: MUST_USE_ATTRIBUTE,
    rows: MUST_USE_ATTRIBUTE | HAS_POSITIVE_NUMERIC_VALUE,
    rowSpan: null,
    sandbox: null,
    scope: null,
    scrolling: null,
    seamless: MUST_USE_ATTRIBUTE | HAS_BOOLEAN_VALUE,
    selected: MUST_USE_PROPERTY | HAS_BOOLEAN_VALUE,
    shape: null,
    size: MUST_USE_ATTRIBUTE | HAS_POSITIVE_NUMERIC_VALUE,
    sizes: MUST_USE_ATTRIBUTE,
    span: HAS_POSITIVE_NUMERIC_VALUE,
    spellCheck: null,
    src: null,
    srcDoc: MUST_USE_PROPERTY,
    srcSet: MUST_USE_ATTRIBUTE,
    start: HAS_NUMERIC_VALUE,
    step: null,
    style: null,
    tabIndex: null,
    target: null,
    title: null,
    type: null,
    useMap: null,
    value: MUST_USE_PROPERTY | HAS_SIDE_EFFECTS,
    width: MUST_USE_ATTRIBUTE,
    wmode: MUST_USE_ATTRIBUTE,

    /**
     * Non-standard Properties
     */
    autoCapitalize: null, // Supported in Mobile Safari for keyboard hints
    autoCorrect: null, // Supported in Mobile Safari for keyboard hints
    itemProp: MUST_USE_ATTRIBUTE, // Microdata: http://schema.org/docs/gs.html
    itemScope: MUST_USE_ATTRIBUTE | HAS_BOOLEAN_VALUE, // Microdata: http://schema.org/docs/gs.html
    itemType: MUST_USE_ATTRIBUTE, // Microdata: http://schema.org/docs/gs.html
    property: null // Supports OG in meta tags
  },
  DOMAttributeNames: {
    acceptCharset: 'accept-charset',
    className: 'class',
    htmlFor: 'for',
    httpEquiv: 'http-equiv'
  },
  DOMPropertyNames: {
    autoCapitalize: 'autocapitalize',
    autoComplete: 'autocomplete',
    autoCorrect: 'autocorrect',
    autoFocus: 'autofocus',
    autoPlay: 'autoplay',
    encType: 'enctype',
    hrefLang: 'hreflang',
    radioGroup: 'radiogroup',
    spellCheck: 'spellcheck',
    srcDoc: 'srcdoc',
    srcSet: 'srcset'
  }
};

module.exports = HTMLDOMPropertyConfig;

},{"./DOMProperty":118,"./ExecutionEnvironment":129}],131:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule LinkedStateMixin
 * @typechecks static-only
 */

"use strict";

var ReactLink = require("./ReactLink");
var ReactStateSetters = require("./ReactStateSetters");

/**
 * A simple mixin around ReactLink.forState().
 */
var LinkedStateMixin = {
  /**
   * Create a ReactLink that's linked to part of this component's state. The
   * ReactLink will have the current value of this.state[key] and will call
   * setState() when a change is requested.
   *
   * @param {string} key state key to update. Note: you may want to use keyOf()
   * if you're using Google Closure Compiler advanced mode.
   * @return {ReactLink} ReactLink instance linking to the state.
   */
  linkState: function(key) {
    return new ReactLink(
      this.state[key],
      ReactStateSetters.createStateKeySetter(this, key)
    );
  }
};

module.exports = LinkedStateMixin;

},{"./ReactLink":174,"./ReactStateSetters":191}],132:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule LinkedValueUtils
 * @typechecks static-only
 */

"use strict";

var ReactPropTypes = require("./ReactPropTypes");

var invariant = require("./invariant");

var hasReadOnlyValue = {
  'button': true,
  'checkbox': true,
  'image': true,
  'hidden': true,
  'radio': true,
  'reset': true,
  'submit': true
};

function _assertSingleLink(input) {
  ("production" !== process.env.NODE_ENV ? invariant(
    input.props.checkedLink == null || input.props.valueLink == null,
    'Cannot provide a checkedLink and a valueLink. If you want to use ' +
    'checkedLink, you probably don\'t want to use valueLink and vice versa.'
  ) : invariant(input.props.checkedLink == null || input.props.valueLink == null));
}
function _assertValueLink(input) {
  _assertSingleLink(input);
  ("production" !== process.env.NODE_ENV ? invariant(
    input.props.value == null && input.props.onChange == null,
    'Cannot provide a valueLink and a value or onChange event. If you want ' +
    'to use value or onChange, you probably don\'t want to use valueLink.'
  ) : invariant(input.props.value == null && input.props.onChange == null));
}

function _assertCheckedLink(input) {
  _assertSingleLink(input);
  ("production" !== process.env.NODE_ENV ? invariant(
    input.props.checked == null && input.props.onChange == null,
    'Cannot provide a checkedLink and a checked property or onChange event. ' +
    'If you want to use checked or onChange, you probably don\'t want to ' +
    'use checkedLink'
  ) : invariant(input.props.checked == null && input.props.onChange == null));
}

/**
 * @param {SyntheticEvent} e change event to handle
 */
function _handleLinkedValueChange(e) {
  /*jshint validthis:true */
  this.props.valueLink.requestChange(e.target.value);
}

/**
  * @param {SyntheticEvent} e change event to handle
  */
function _handleLinkedCheckChange(e) {
  /*jshint validthis:true */
  this.props.checkedLink.requestChange(e.target.checked);
}

/**
 * Provide a linked `value` attribute for controlled forms. You should not use
 * this outside of the ReactDOM controlled form components.
 */
var LinkedValueUtils = {
  Mixin: {
    propTypes: {
      value: function(props, propName, componentName) {
        if (!props[propName] ||
            hasReadOnlyValue[props.type] ||
            props.onChange ||
            props.readOnly ||
            props.disabled) {
          return;
        }
        return new Error(
          'You provided a `value` prop to a form field without an ' +
          '`onChange` handler. This will render a read-only field. If ' +
          'the field should be mutable use `defaultValue`. Otherwise, ' +
          'set either `onChange` or `readOnly`.'
        );
      },
      checked: function(props, propName, componentName) {
        if (!props[propName] ||
            props.onChange ||
            props.readOnly ||
            props.disabled) {
          return;
        }
        return new Error(
          'You provided a `checked` prop to a form field without an ' +
          '`onChange` handler. This will render a read-only field. If ' +
          'the field should be mutable use `defaultChecked`. Otherwise, ' +
          'set either `onChange` or `readOnly`.'
        );
      },
      onChange: ReactPropTypes.func
    }
  },

  /**
   * @param {ReactComponent} input Form component
   * @return {*} current value of the input either from value prop or link.
   */
  getValue: function(input) {
    if (input.props.valueLink) {
      _assertValueLink(input);
      return input.props.valueLink.value;
    }
    return input.props.value;
  },

  /**
   * @param {ReactComponent} input Form component
   * @return {*} current checked status of the input either from checked prop
   *             or link.
   */
  getChecked: function(input) {
    if (input.props.checkedLink) {
      _assertCheckedLink(input);
      return input.props.checkedLink.value;
    }
    return input.props.checked;
  },

  /**
   * @param {ReactComponent} input Form component
   * @return {function} change callback either from onChange prop or link.
   */
  getOnChange: function(input) {
    if (input.props.valueLink) {
      _assertValueLink(input);
      return _handleLinkedValueChange;
    } else if (input.props.checkedLink) {
      _assertCheckedLink(input);
      return _handleLinkedCheckChange;
    }
    return input.props.onChange;
  }
};

module.exports = LinkedValueUtils;

}).call(this,require('_process'))
},{"./ReactPropTypes":185,"./invariant":247,"_process":91}],133:[function(require,module,exports){
(function (process){
/**
 * Copyright 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule LocalEventTrapMixin
 */

"use strict";

var ReactBrowserEventEmitter = require("./ReactBrowserEventEmitter");

var accumulateInto = require("./accumulateInto");
var forEachAccumulated = require("./forEachAccumulated");
var invariant = require("./invariant");

function remove(event) {
  event.remove();
}

var LocalEventTrapMixin = {
  trapBubbledEvent:function(topLevelType, handlerBaseName) {
    ("production" !== process.env.NODE_ENV ? invariant(this.isMounted(), 'Must be mounted to trap events') : invariant(this.isMounted()));
    var listener = ReactBrowserEventEmitter.trapBubbledEvent(
      topLevelType,
      handlerBaseName,
      this.getDOMNode()
    );
    this._localEventListeners =
      accumulateInto(this._localEventListeners, listener);
  },

  // trapCapturedEvent would look nearly identical. We don't implement that
  // method because it isn't currently needed.

  componentWillUnmount:function() {
    if (this._localEventListeners) {
      forEachAccumulated(this._localEventListeners, remove);
    }
  }
};

module.exports = LocalEventTrapMixin;

}).call(this,require('_process'))
},{"./ReactBrowserEventEmitter":139,"./accumulateInto":216,"./forEachAccumulated":233,"./invariant":247,"_process":91}],134:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule MobileSafariClickEventPlugin
 * @typechecks static-only
 */

"use strict";

var EventConstants = require("./EventConstants");

var emptyFunction = require("./emptyFunction");

var topLevelTypes = EventConstants.topLevelTypes;

/**
 * Mobile Safari does not fire properly bubble click events on non-interactive
 * elements, which means delegated click listeners do not fire. The workaround
 * for this bug involves attaching an empty click listener on the target node.
 *
 * This particular plugin works around the bug by attaching an empty click
 * listener on `touchstart` (which does fire on every element).
 */
var MobileSafariClickEventPlugin = {

  eventTypes: null,

  /**
   * @param {string} topLevelType Record from `EventConstants`.
   * @param {DOMEventTarget} topLevelTarget The listening component root node.
   * @param {string} topLevelTargetID ID of `topLevelTarget`.
   * @param {object} nativeEvent Native browser event.
   * @return {*} An accumulation of synthetic events.
   * @see {EventPluginHub.extractEvents}
   */
  extractEvents: function(
      topLevelType,
      topLevelTarget,
      topLevelTargetID,
      nativeEvent) {
    if (topLevelType === topLevelTypes.topTouchStart) {
      var target = nativeEvent.target;
      if (target && !target.onclick) {
        target.onclick = emptyFunction;
      }
    }
  }

};

module.exports = MobileSafariClickEventPlugin;

},{"./EventConstants":123,"./emptyFunction":228}],135:[function(require,module,exports){
/**
 * Copyright 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule Object.assign
 */

// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.assign

function assign(target, sources) {
  if (target == null) {
    throw new TypeError('Object.assign target cannot be null or undefined');
  }

  var to = Object(target);
  var hasOwnProperty = Object.prototype.hasOwnProperty;

  for (var nextIndex = 1; nextIndex < arguments.length; nextIndex++) {
    var nextSource = arguments[nextIndex];
    if (nextSource == null) {
      continue;
    }

    var from = Object(nextSource);

    // We don't currently support accessors nor proxies. Therefore this
    // copy cannot throw. If we ever supported this then we must handle
    // exceptions and side-effects. We don't support symbols so they won't
    // be transferred.

    for (var key in from) {
      if (hasOwnProperty.call(from, key)) {
        to[key] = from[key];
      }
    }
  }

  return to;
};

module.exports = assign;

},{}],136:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule PooledClass
 */

"use strict";

var invariant = require("./invariant");

/**
 * Static poolers. Several custom versions for each potential number of
 * arguments. A completely generic pooler is easy to implement, but would
 * require accessing the `arguments` object. In each of these, `this` refers to
 * the Class itself, not an instance. If any others are needed, simply add them
 * here, or in their own files.
 */
var oneArgumentPooler = function(copyFieldsFrom) {
  var Klass = this;
  if (Klass.instancePool.length) {
    var instance = Klass.instancePool.pop();
    Klass.call(instance, copyFieldsFrom);
    return instance;
  } else {
    return new Klass(copyFieldsFrom);
  }
};

var twoArgumentPooler = function(a1, a2) {
  var Klass = this;
  if (Klass.instancePool.length) {
    var instance = Klass.instancePool.pop();
    Klass.call(instance, a1, a2);
    return instance;
  } else {
    return new Klass(a1, a2);
  }
};

var threeArgumentPooler = function(a1, a2, a3) {
  var Klass = this;
  if (Klass.instancePool.length) {
    var instance = Klass.instancePool.pop();
    Klass.call(instance, a1, a2, a3);
    return instance;
  } else {
    return new Klass(a1, a2, a3);
  }
};

var fiveArgumentPooler = function(a1, a2, a3, a4, a5) {
  var Klass = this;
  if (Klass.instancePool.length) {
    var instance = Klass.instancePool.pop();
    Klass.call(instance, a1, a2, a3, a4, a5);
    return instance;
  } else {
    return new Klass(a1, a2, a3, a4, a5);
  }
};

var standardReleaser = function(instance) {
  var Klass = this;
  ("production" !== process.env.NODE_ENV ? invariant(
    instance instanceof Klass,
    'Trying to release an instance into a pool of a different type.'
  ) : invariant(instance instanceof Klass));
  if (instance.destructor) {
    instance.destructor();
  }
  if (Klass.instancePool.length < Klass.poolSize) {
    Klass.instancePool.push(instance);
  }
};

var DEFAULT_POOL_SIZE = 10;
var DEFAULT_POOLER = oneArgumentPooler;

/**
 * Augments `CopyConstructor` to be a poolable class, augmenting only the class
 * itself (statically) not adding any prototypical fields. Any CopyConstructor
 * you give this may have a `poolSize` property, and will look for a
 * prototypical `destructor` on instances (optional).
 *
 * @param {Function} CopyConstructor Constructor that can be used to reset.
 * @param {Function} pooler Customizable pooler.
 */
var addPoolingTo = function(CopyConstructor, pooler) {
  var NewKlass = CopyConstructor;
  NewKlass.instancePool = [];
  NewKlass.getPooled = pooler || DEFAULT_POOLER;
  if (!NewKlass.poolSize) {
    NewKlass.poolSize = DEFAULT_POOL_SIZE;
  }
  NewKlass.release = standardReleaser;
  return NewKlass;
};

var PooledClass = {
  addPoolingTo: addPoolingTo,
  oneArgumentPooler: oneArgumentPooler,
  twoArgumentPooler: twoArgumentPooler,
  threeArgumentPooler: threeArgumentPooler,
  fiveArgumentPooler: fiveArgumentPooler
};

module.exports = PooledClass;

}).call(this,require('_process'))
},{"./invariant":247,"_process":91}],137:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule React
 */

"use strict";

var DOMPropertyOperations = require("./DOMPropertyOperations");
var EventPluginUtils = require("./EventPluginUtils");
var ReactChildren = require("./ReactChildren");
var ReactComponent = require("./ReactComponent");
var ReactCompositeComponent = require("./ReactCompositeComponent");
var ReactContext = require("./ReactContext");
var ReactCurrentOwner = require("./ReactCurrentOwner");
var ReactElement = require("./ReactElement");
var ReactElementValidator = require("./ReactElementValidator");
var ReactDOM = require("./ReactDOM");
var ReactDOMComponent = require("./ReactDOMComponent");
var ReactDefaultInjection = require("./ReactDefaultInjection");
var ReactInstanceHandles = require("./ReactInstanceHandles");
var ReactLegacyElement = require("./ReactLegacyElement");
var ReactMount = require("./ReactMount");
var ReactMultiChild = require("./ReactMultiChild");
var ReactPerf = require("./ReactPerf");
var ReactPropTypes = require("./ReactPropTypes");
var ReactServerRendering = require("./ReactServerRendering");
var ReactTextComponent = require("./ReactTextComponent");

var assign = require("./Object.assign");
var deprecated = require("./deprecated");
var onlyChild = require("./onlyChild");

ReactDefaultInjection.inject();

var createElement = ReactElement.createElement;
var createFactory = ReactElement.createFactory;

if ("production" !== process.env.NODE_ENV) {
  createElement = ReactElementValidator.createElement;
  createFactory = ReactElementValidator.createFactory;
}

// TODO: Drop legacy elements once classes no longer export these factories
createElement = ReactLegacyElement.wrapCreateElement(
  createElement
);
createFactory = ReactLegacyElement.wrapCreateFactory(
  createFactory
);

var render = ReactPerf.measure('React', 'render', ReactMount.render);

var React = {
  Children: {
    map: ReactChildren.map,
    forEach: ReactChildren.forEach,
    count: ReactChildren.count,
    only: onlyChild
  },
  DOM: ReactDOM,
  PropTypes: ReactPropTypes,
  initializeTouchEvents: function(shouldUseTouch) {
    EventPluginUtils.useTouchEvents = shouldUseTouch;
  },
  createClass: ReactCompositeComponent.createClass,
  createElement: createElement,
  createFactory: createFactory,
  constructAndRenderComponent: ReactMount.constructAndRenderComponent,
  constructAndRenderComponentByID: ReactMount.constructAndRenderComponentByID,
  render: render,
  renderToString: ReactServerRendering.renderToString,
  renderToStaticMarkup: ReactServerRendering.renderToStaticMarkup,
  unmountComponentAtNode: ReactMount.unmountComponentAtNode,
  isValidClass: ReactLegacyElement.isValidClass,
  isValidElement: ReactElement.isValidElement,
  withContext: ReactContext.withContext,

  // Hook for JSX spread, don't use this for anything else.
  __spread: assign,

  // Deprecations (remove for 0.13)
  renderComponent: deprecated(
    'React',
    'renderComponent',
    'render',
    this,
    render
  ),
  renderComponentToString: deprecated(
    'React',
    'renderComponentToString',
    'renderToString',
    this,
    ReactServerRendering.renderToString
  ),
  renderComponentToStaticMarkup: deprecated(
    'React',
    'renderComponentToStaticMarkup',
    'renderToStaticMarkup',
    this,
    ReactServerRendering.renderToStaticMarkup
  ),
  isValidComponent: deprecated(
    'React',
    'isValidComponent',
    'isValidElement',
    this,
    ReactElement.isValidElement
  )
};

// Inject the runtime into a devtools global hook regardless of browser.
// Allows for debugging when the hook is injected on the page.
if (
  typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined' &&
  typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.inject === 'function') {
  __REACT_DEVTOOLS_GLOBAL_HOOK__.inject({
    Component: ReactComponent,
    CurrentOwner: ReactCurrentOwner,
    DOMComponent: ReactDOMComponent,
    DOMPropertyOperations: DOMPropertyOperations,
    InstanceHandles: ReactInstanceHandles,
    Mount: ReactMount,
    MultiChild: ReactMultiChild,
    TextComponent: ReactTextComponent
  });
}

if ("production" !== process.env.NODE_ENV) {
  var ExecutionEnvironment = require("./ExecutionEnvironment");
  if (ExecutionEnvironment.canUseDOM && window.top === window.self) {

    // If we're in Chrome, look for the devtools marker and provide a download
    // link if not installed.
    if (navigator.userAgent.indexOf('Chrome') > -1) {
      if (typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ === 'undefined') {
        console.debug(
          'Download the React DevTools for a better development experience: ' +
          'http://fb.me/react-devtools'
        );
      }
    }

    var expectedFeatures = [
      // shims
      Array.isArray,
      Array.prototype.every,
      Array.prototype.forEach,
      Array.prototype.indexOf,
      Array.prototype.map,
      Date.now,
      Function.prototype.bind,
      Object.keys,
      String.prototype.split,
      String.prototype.trim,

      // shams
      Object.create,
      Object.freeze
    ];

    for (var i = 0; i < expectedFeatures.length; i++) {
      if (!expectedFeatures[i]) {
        console.error(
          'One or more ES5 shim/shams expected by React are not available: ' +
          'http://fb.me/react-warning-polyfills'
        );
        break;
      }
    }
  }
}

// Version exists only in the open-source version of React, not in Facebook's
// internal version.
React.version = '0.12.2';

module.exports = React;

}).call(this,require('_process'))
},{"./DOMPropertyOperations":119,"./EventPluginUtils":127,"./ExecutionEnvironment":129,"./Object.assign":135,"./ReactChildren":142,"./ReactComponent":143,"./ReactCompositeComponent":146,"./ReactContext":147,"./ReactCurrentOwner":148,"./ReactDOM":149,"./ReactDOMComponent":151,"./ReactDefaultInjection":161,"./ReactElement":164,"./ReactElementValidator":165,"./ReactInstanceHandles":172,"./ReactLegacyElement":173,"./ReactMount":176,"./ReactMultiChild":177,"./ReactPerf":181,"./ReactPropTypes":185,"./ReactServerRendering":189,"./ReactTextComponent":193,"./deprecated":227,"./onlyChild":258,"_process":91}],138:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactBrowserComponentMixin
 */

"use strict";

var ReactEmptyComponent = require("./ReactEmptyComponent");
var ReactMount = require("./ReactMount");

var invariant = require("./invariant");

var ReactBrowserComponentMixin = {
  /**
   * Returns the DOM node rendered by this component.
   *
   * @return {DOMElement} The root node of this component.
   * @final
   * @protected
   */
  getDOMNode: function() {
    ("production" !== process.env.NODE_ENV ? invariant(
      this.isMounted(),
      'getDOMNode(): A component must be mounted to have a DOM node.'
    ) : invariant(this.isMounted()));
    if (ReactEmptyComponent.isNullComponentID(this._rootNodeID)) {
      return null;
    }
    return ReactMount.getNode(this._rootNodeID);
  }
};

module.exports = ReactBrowserComponentMixin;

}).call(this,require('_process'))
},{"./ReactEmptyComponent":166,"./ReactMount":176,"./invariant":247,"_process":91}],139:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactBrowserEventEmitter
 * @typechecks static-only
 */

"use strict";

var EventConstants = require("./EventConstants");
var EventPluginHub = require("./EventPluginHub");
var EventPluginRegistry = require("./EventPluginRegistry");
var ReactEventEmitterMixin = require("./ReactEventEmitterMixin");
var ViewportMetrics = require("./ViewportMetrics");

var assign = require("./Object.assign");
var isEventSupported = require("./isEventSupported");

/**
 * Summary of `ReactBrowserEventEmitter` event handling:
 *
 *  - Top-level delegation is used to trap most native browser events. This
 *    may only occur in the main thread and is the responsibility of
 *    ReactEventListener, which is injected and can therefore support pluggable
 *    event sources. This is the only work that occurs in the main thread.
 *
 *  - We normalize and de-duplicate events to account for browser quirks. This
 *    may be done in the worker thread.
 *
 *  - Forward these native events (with the associated top-level type used to
 *    trap it) to `EventPluginHub`, which in turn will ask plugins if they want
 *    to extract any synthetic events.
 *
 *  - The `EventPluginHub` will then process each event by annotating them with
 *    "dispatches", a sequence of listeners and IDs that care about that event.
 *
 *  - The `EventPluginHub` then dispatches the events.
 *
 * Overview of React and the event system:
 *
 * +------------+    .
 * |    DOM     |    .
 * +------------+    .
 *       |           .
 *       v           .
 * +------------+    .
 * | ReactEvent |    .
 * |  Listener  |    .
 * +------------+    .                         +-----------+
 *       |           .               +--------+|SimpleEvent|
 *       |           .               |         |Plugin     |
 * +-----|------+    .               v         +-----------+
 * |     |      |    .    +--------------+                    +------------+
 * |     +-----------.--->|EventPluginHub|                    |    Event   |
 * |            |    .    |              |     +-----------+  | Propagators|
 * | ReactEvent |    .    |              |     |TapEvent   |  |------------|
 * |  Emitter   |    .    |              |<---+|Plugin     |  |other plugin|
 * |            |    .    |              |     +-----------+  |  utilities |
 * |     +-----------.--->|              |                    +------------+
 * |     |      |    .    +--------------+
 * +-----|------+    .                ^        +-----------+
 *       |           .                |        |Enter/Leave|
 *       +           .                +-------+|Plugin     |
 * +-------------+   .                         +-----------+
 * | application |   .
 * |-------------|   .
 * |             |   .
 * |             |   .
 * +-------------+   .
 *                   .
 *    React Core     .  General Purpose Event Plugin System
 */

var alreadyListeningTo = {};
var isMonitoringScrollValue = false;
var reactTopListenersCounter = 0;

// For events like 'submit' which don't consistently bubble (which we trap at a
// lower node than `document`), binding at `document` would cause duplicate
// events so we don't include them here
var topEventMapping = {
  topBlur: 'blur',
  topChange: 'change',
  topClick: 'click',
  topCompositionEnd: 'compositionend',
  topCompositionStart: 'compositionstart',
  topCompositionUpdate: 'compositionupdate',
  topContextMenu: 'contextmenu',
  topCopy: 'copy',
  topCut: 'cut',
  topDoubleClick: 'dblclick',
  topDrag: 'drag',
  topDragEnd: 'dragend',
  topDragEnter: 'dragenter',
  topDragExit: 'dragexit',
  topDragLeave: 'dragleave',
  topDragOver: 'dragover',
  topDragStart: 'dragstart',
  topDrop: 'drop',
  topFocus: 'focus',
  topInput: 'input',
  topKeyDown: 'keydown',
  topKeyPress: 'keypress',
  topKeyUp: 'keyup',
  topMouseDown: 'mousedown',
  topMouseMove: 'mousemove',
  topMouseOut: 'mouseout',
  topMouseOver: 'mouseover',
  topMouseUp: 'mouseup',
  topPaste: 'paste',
  topScroll: 'scroll',
  topSelectionChange: 'selectionchange',
  topTextInput: 'textInput',
  topTouchCancel: 'touchcancel',
  topTouchEnd: 'touchend',
  topTouchMove: 'touchmove',
  topTouchStart: 'touchstart',
  topWheel: 'wheel'
};

/**
 * To ensure no conflicts with other potential React instances on the page
 */
var topListenersIDKey = "_reactListenersID" + String(Math.random()).slice(2);

function getListeningForDocument(mountAt) {
  // In IE8, `mountAt` is a host object and doesn't have `hasOwnProperty`
  // directly.
  if (!Object.prototype.hasOwnProperty.call(mountAt, topListenersIDKey)) {
    mountAt[topListenersIDKey] = reactTopListenersCounter++;
    alreadyListeningTo[mountAt[topListenersIDKey]] = {};
  }
  return alreadyListeningTo[mountAt[topListenersIDKey]];
}

/**
 * `ReactBrowserEventEmitter` is used to attach top-level event listeners. For
 * example:
 *
 *   ReactBrowserEventEmitter.putListener('myID', 'onClick', myFunction);
 *
 * This would allocate a "registration" of `('onClick', myFunction)` on 'myID'.
 *
 * @internal
 */
var ReactBrowserEventEmitter = assign({}, ReactEventEmitterMixin, {

  /**
   * Injectable event backend
   */
  ReactEventListener: null,

  injection: {
    /**
     * @param {object} ReactEventListener
     */
    injectReactEventListener: function(ReactEventListener) {
      ReactEventListener.setHandleTopLevel(
        ReactBrowserEventEmitter.handleTopLevel
      );
      ReactBrowserEventEmitter.ReactEventListener = ReactEventListener;
    }
  },

  /**
   * Sets whether or not any created callbacks should be enabled.
   *
   * @param {boolean} enabled True if callbacks should be enabled.
   */
  setEnabled: function(enabled) {
    if (ReactBrowserEventEmitter.ReactEventListener) {
      ReactBrowserEventEmitter.ReactEventListener.setEnabled(enabled);
    }
  },

  /**
   * @return {boolean} True if callbacks are enabled.
   */
  isEnabled: function() {
    return !!(
      ReactBrowserEventEmitter.ReactEventListener &&
      ReactBrowserEventEmitter.ReactEventListener.isEnabled()
    );
  },

  /**
   * We listen for bubbled touch events on the document object.
   *
   * Firefox v8.01 (and possibly others) exhibited strange behavior when
   * mounting `onmousemove` events at some node that was not the document
   * element. The symptoms were that if your mouse is not moving over something
   * contained within that mount point (for example on the background) the
   * top-level listeners for `onmousemove` won't be called. However, if you
   * register the `mousemove` on the document object, then it will of course
   * catch all `mousemove`s. This along with iOS quirks, justifies restricting
   * top-level listeners to the document object only, at least for these
   * movement types of events and possibly all events.
   *
   * @see http://www.quirksmode.org/blog/archives/2010/09/click_event_del.html
   *
   * Also, `keyup`/`keypress`/`keydown` do not bubble to the window on IE, but
   * they bubble to document.
   *
   * @param {string} registrationName Name of listener (e.g. `onClick`).
   * @param {object} contentDocumentHandle Document which owns the container
   */
  listenTo: function(registrationName, contentDocumentHandle) {
    var mountAt = contentDocumentHandle;
    var isListening = getListeningForDocument(mountAt);
    var dependencies = EventPluginRegistry.
      registrationNameDependencies[registrationName];

    var topLevelTypes = EventConstants.topLevelTypes;
    for (var i = 0, l = dependencies.length; i < l; i++) {
      var dependency = dependencies[i];
      if (!(
            isListening.hasOwnProperty(dependency) &&
            isListening[dependency]
          )) {
        if (dependency === topLevelTypes.topWheel) {
          if (isEventSupported('wheel')) {
            ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent(
              topLevelTypes.topWheel,
              'wheel',
              mountAt
            );
          } else if (isEventSupported('mousewheel')) {
            ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent(
              topLevelTypes.topWheel,
              'mousewheel',
              mountAt
            );
          } else {
            // Firefox needs to capture a different mouse scroll event.
            // @see http://www.quirksmode.org/dom/events/tests/scroll.html
            ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent(
              topLevelTypes.topWheel,
              'DOMMouseScroll',
              mountAt
            );
          }
        } else if (dependency === topLevelTypes.topScroll) {

          if (isEventSupported('scroll', true)) {
            ReactBrowserEventEmitter.ReactEventListener.trapCapturedEvent(
              topLevelTypes.topScroll,
              'scroll',
              mountAt
            );
          } else {
            ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent(
              topLevelTypes.topScroll,
              'scroll',
              ReactBrowserEventEmitter.ReactEventListener.WINDOW_HANDLE
            );
          }
        } else if (dependency === topLevelTypes.topFocus ||
            dependency === topLevelTypes.topBlur) {

          if (isEventSupported('focus', true)) {
            ReactBrowserEventEmitter.ReactEventListener.trapCapturedEvent(
              topLevelTypes.topFocus,
              'focus',
              mountAt
            );
            ReactBrowserEventEmitter.ReactEventListener.trapCapturedEvent(
              topLevelTypes.topBlur,
              'blur',
              mountAt
            );
          } else if (isEventSupported('focusin')) {
            // IE has `focusin` and `focusout` events which bubble.
            // @see http://www.quirksmode.org/blog/archives/2008/04/delegating_the.html
            ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent(
              topLevelTypes.topFocus,
              'focusin',
              mountAt
            );
            ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent(
              topLevelTypes.topBlur,
              'focusout',
              mountAt
            );
          }

          // to make sure blur and focus event listeners are only attached once
          isListening[topLevelTypes.topBlur] = true;
          isListening[topLevelTypes.topFocus] = true;
        } else if (topEventMapping.hasOwnProperty(dependency)) {
          ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent(
            dependency,
            topEventMapping[dependency],
            mountAt
          );
        }

        isListening[dependency] = true;
      }
    }
  },

  trapBubbledEvent: function(topLevelType, handlerBaseName, handle) {
    return ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent(
      topLevelType,
      handlerBaseName,
      handle
    );
  },

  trapCapturedEvent: function(topLevelType, handlerBaseName, handle) {
    return ReactBrowserEventEmitter.ReactEventListener.trapCapturedEvent(
      topLevelType,
      handlerBaseName,
      handle
    );
  },

  /**
   * Listens to window scroll and resize events. We cache scroll values so that
   * application code can access them without triggering reflows.
   *
   * NOTE: Scroll events do not bubble.
   *
   * @see http://www.quirksmode.org/dom/events/scroll.html
   */
  ensureScrollValueMonitoring: function(){
    if (!isMonitoringScrollValue) {
      var refresh = ViewportMetrics.refreshScrollValues;
      ReactBrowserEventEmitter.ReactEventListener.monitorScrollValue(refresh);
      isMonitoringScrollValue = true;
    }
  },

  eventNameDispatchConfigs: EventPluginHub.eventNameDispatchConfigs,

  registrationNameModules: EventPluginHub.registrationNameModules,

  putListener: EventPluginHub.putListener,

  getListener: EventPluginHub.getListener,

  deleteListener: EventPluginHub.deleteListener,

  deleteAllListeners: EventPluginHub.deleteAllListeners

});

module.exports = ReactBrowserEventEmitter;

},{"./EventConstants":123,"./EventPluginHub":125,"./EventPluginRegistry":126,"./Object.assign":135,"./ReactEventEmitterMixin":168,"./ViewportMetrics":215,"./isEventSupported":248}],140:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @typechecks
 * @providesModule ReactCSSTransitionGroup
 */

"use strict";

var React = require("./React");

var assign = require("./Object.assign");

var ReactTransitionGroup = React.createFactory(
  require("./ReactTransitionGroup")
);
var ReactCSSTransitionGroupChild = React.createFactory(
  require("./ReactCSSTransitionGroupChild")
);

var ReactCSSTransitionGroup = React.createClass({
  displayName: 'ReactCSSTransitionGroup',

  propTypes: {
    transitionName: React.PropTypes.string.isRequired,
    transitionEnter: React.PropTypes.bool,
    transitionLeave: React.PropTypes.bool
  },

  getDefaultProps: function() {
    return {
      transitionEnter: true,
      transitionLeave: true
    };
  },

  _wrapChild: function(child) {
    // We need to provide this childFactory so that
    // ReactCSSTransitionGroupChild can receive updates to name, enter, and
    // leave while it is leaving.
    return ReactCSSTransitionGroupChild(
      {
        name: this.props.transitionName,
        enter: this.props.transitionEnter,
        leave: this.props.transitionLeave
      },
      child
    );
  },

  render: function() {
    return (
      ReactTransitionGroup(
        assign({}, this.props, {childFactory: this._wrapChild})
      )
    );
  }
});

module.exports = ReactCSSTransitionGroup;

},{"./Object.assign":135,"./React":137,"./ReactCSSTransitionGroupChild":141,"./ReactTransitionGroup":196}],141:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @typechecks
 * @providesModule ReactCSSTransitionGroupChild
 */

"use strict";

var React = require("./React");

var CSSCore = require("./CSSCore");
var ReactTransitionEvents = require("./ReactTransitionEvents");

var onlyChild = require("./onlyChild");

// We don't remove the element from the DOM until we receive an animationend or
// transitionend event. If the user screws up and forgets to add an animation
// their node will be stuck in the DOM forever, so we detect if an animation
// does not start and if it doesn't, we just call the end listener immediately.
var TICK = 17;
var NO_EVENT_TIMEOUT = 5000;

var noEventListener = null;


if ("production" !== process.env.NODE_ENV) {
  noEventListener = function() {
    console.warn(
      'transition(): tried to perform an animation without ' +
      'an animationend or transitionend event after timeout (' +
      NO_EVENT_TIMEOUT + 'ms). You should either disable this ' +
      'transition in JS or add a CSS animation/transition.'
    );
  };
}

var ReactCSSTransitionGroupChild = React.createClass({
  displayName: 'ReactCSSTransitionGroupChild',

  transition: function(animationType, finishCallback) {
    var node = this.getDOMNode();
    var className = this.props.name + '-' + animationType;
    var activeClassName = className + '-active';
    var noEventTimeout = null;

    var endListener = function(e) {
      if (e && e.target !== node) {
        return;
      }
      if ("production" !== process.env.NODE_ENV) {
        clearTimeout(noEventTimeout);
      }

      CSSCore.removeClass(node, className);
      CSSCore.removeClass(node, activeClassName);

      ReactTransitionEvents.removeEndEventListener(node, endListener);

      // Usually this optional callback is used for informing an owner of
      // a leave animation and telling it to remove the child.
      finishCallback && finishCallback();
    };

    ReactTransitionEvents.addEndEventListener(node, endListener);

    CSSCore.addClass(node, className);

    // Need to do this to actually trigger a transition.
    this.queueClass(activeClassName);

    if ("production" !== process.env.NODE_ENV) {
      noEventTimeout = setTimeout(noEventListener, NO_EVENT_TIMEOUT);
    }
  },

  queueClass: function(className) {
    this.classNameQueue.push(className);

    if (!this.timeout) {
      this.timeout = setTimeout(this.flushClassNameQueue, TICK);
    }
  },

  flushClassNameQueue: function() {
    if (this.isMounted()) {
      this.classNameQueue.forEach(
        CSSCore.addClass.bind(CSSCore, this.getDOMNode())
      );
    }
    this.classNameQueue.length = 0;
    this.timeout = null;
  },

  componentWillMount: function() {
    this.classNameQueue = [];
  },

  componentWillUnmount: function() {
    if (this.timeout) {
      clearTimeout(this.timeout);
    }
  },

  componentWillEnter: function(done) {
    if (this.props.enter) {
      this.transition('enter', done);
    } else {
      done();
    }
  },

  componentWillLeave: function(done) {
    if (this.props.leave) {
      this.transition('leave', done);
    } else {
      done();
    }
  },

  render: function() {
    return onlyChild(this.props.children);
  }
});

module.exports = ReactCSSTransitionGroupChild;

}).call(this,require('_process'))
},{"./CSSCore":110,"./React":137,"./ReactTransitionEvents":195,"./onlyChild":258,"_process":91}],142:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactChildren
 */

"use strict";

var PooledClass = require("./PooledClass");

var traverseAllChildren = require("./traverseAllChildren");
var warning = require("./warning");

var twoArgumentPooler = PooledClass.twoArgumentPooler;
var threeArgumentPooler = PooledClass.threeArgumentPooler;

/**
 * PooledClass representing the bookkeeping associated with performing a child
 * traversal. Allows avoiding binding callbacks.
 *
 * @constructor ForEachBookKeeping
 * @param {!function} forEachFunction Function to perform traversal with.
 * @param {?*} forEachContext Context to perform context with.
 */
function ForEachBookKeeping(forEachFunction, forEachContext) {
  this.forEachFunction = forEachFunction;
  this.forEachContext = forEachContext;
}
PooledClass.addPoolingTo(ForEachBookKeeping, twoArgumentPooler);

function forEachSingleChild(traverseContext, child, name, i) {
  var forEachBookKeeping = traverseContext;
  forEachBookKeeping.forEachFunction.call(
    forEachBookKeeping.forEachContext, child, i);
}

/**
 * Iterates through children that are typically specified as `props.children`.
 *
 * The provided forEachFunc(child, index) will be called for each
 * leaf child.
 *
 * @param {?*} children Children tree container.
 * @param {function(*, int)} forEachFunc.
 * @param {*} forEachContext Context for forEachContext.
 */
function forEachChildren(children, forEachFunc, forEachContext) {
  if (children == null) {
    return children;
  }

  var traverseContext =
    ForEachBookKeeping.getPooled(forEachFunc, forEachContext);
  traverseAllChildren(children, forEachSingleChild, traverseContext);
  ForEachBookKeeping.release(traverseContext);
}

/**
 * PooledClass representing the bookkeeping associated with performing a child
 * mapping. Allows avoiding binding callbacks.
 *
 * @constructor MapBookKeeping
 * @param {!*} mapResult Object containing the ordered map of results.
 * @param {!function} mapFunction Function to perform mapping with.
 * @param {?*} mapContext Context to perform mapping with.
 */
function MapBookKeeping(mapResult, mapFunction, mapContext) {
  this.mapResult = mapResult;
  this.mapFunction = mapFunction;
  this.mapContext = mapContext;
}
PooledClass.addPoolingTo(MapBookKeeping, threeArgumentPooler);

function mapSingleChildIntoContext(traverseContext, child, name, i) {
  var mapBookKeeping = traverseContext;
  var mapResult = mapBookKeeping.mapResult;

  var keyUnique = !mapResult.hasOwnProperty(name);
  ("production" !== process.env.NODE_ENV ? warning(
    keyUnique,
    'ReactChildren.map(...): Encountered two children with the same key, ' +
    '`%s`. Child keys must be unique; when two children share a key, only ' +
    'the first child will be used.',
    name
  ) : null);

  if (keyUnique) {
    var mappedChild =
      mapBookKeeping.mapFunction.call(mapBookKeeping.mapContext, child, i);
    mapResult[name] = mappedChild;
  }
}

/**
 * Maps children that are typically specified as `props.children`.
 *
 * The provided mapFunction(child, key, index) will be called for each
 * leaf child.
 *
 * TODO: This may likely break any calls to `ReactChildren.map` that were
 * previously relying on the fact that we guarded against null children.
 *
 * @param {?*} children Children tree container.
 * @param {function(*, int)} mapFunction.
 * @param {*} mapContext Context for mapFunction.
 * @return {object} Object containing the ordered map of results.
 */
function mapChildren(children, func, context) {
  if (children == null) {
    return children;
  }

  var mapResult = {};
  var traverseContext = MapBookKeeping.getPooled(mapResult, func, context);
  traverseAllChildren(children, mapSingleChildIntoContext, traverseContext);
  MapBookKeeping.release(traverseContext);
  return mapResult;
}

function forEachSingleChildDummy(traverseContext, child, name, i) {
  return null;
}

/**
 * Count the number of children that are typically specified as
 * `props.children`.
 *
 * @param {?*} children Children tree container.
 * @return {number} The number of children.
 */
function countChildren(children, context) {
  return traverseAllChildren(children, forEachSingleChildDummy, null);
}

var ReactChildren = {
  forEach: forEachChildren,
  map: mapChildren,
  count: countChildren
};

module.exports = ReactChildren;

}).call(this,require('_process'))
},{"./PooledClass":136,"./traverseAllChildren":265,"./warning":267,"_process":91}],143:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactComponent
 */

"use strict";

var ReactElement = require("./ReactElement");
var ReactOwner = require("./ReactOwner");
var ReactUpdates = require("./ReactUpdates");

var assign = require("./Object.assign");
var invariant = require("./invariant");
var keyMirror = require("./keyMirror");

/**
 * Every React component is in one of these life cycles.
 */
var ComponentLifeCycle = keyMirror({
  /**
   * Mounted components have a DOM node representation and are capable of
   * receiving new props.
   */
  MOUNTED: null,
  /**
   * Unmounted components are inactive and cannot receive new props.
   */
  UNMOUNTED: null
});

var injected = false;

/**
 * Optionally injectable environment dependent cleanup hook. (server vs.
 * browser etc). Example: A browser system caches DOM nodes based on component
 * ID and must remove that cache entry when this instance is unmounted.
 *
 * @private
 */
var unmountIDFromEnvironment = null;

/**
 * The "image" of a component tree, is the platform specific (typically
 * serialized) data that represents a tree of lower level UI building blocks.
 * On the web, this "image" is HTML markup which describes a construction of
 * low level `div` and `span` nodes. Other platforms may have different
 * encoding of this "image". This must be injected.
 *
 * @private
 */
var mountImageIntoNode = null;

/**
 * Components are the basic units of composition in React.
 *
 * Every component accepts a set of keyed input parameters known as "props" that
 * are initialized by the constructor. Once a component is mounted, the props
 * can be mutated using `setProps` or `replaceProps`.
 *
 * Every component is capable of the following operations:
 *
 *   `mountComponent`
 *     Initializes the component, renders markup, and registers event listeners.
 *
 *   `receiveComponent`
 *     Updates the rendered DOM nodes to match the given component.
 *
 *   `unmountComponent`
 *     Releases any resources allocated by this component.
 *
 * Components can also be "owned" by other components. Being owned by another
 * component means being constructed by that component. This is different from
 * being the child of a component, which means having a DOM representation that
 * is a child of the DOM representation of that component.
 *
 * @class ReactComponent
 */
var ReactComponent = {

  injection: {
    injectEnvironment: function(ReactComponentEnvironment) {
      ("production" !== process.env.NODE_ENV ? invariant(
        !injected,
        'ReactComponent: injectEnvironment() can only be called once.'
      ) : invariant(!injected));
      mountImageIntoNode = ReactComponentEnvironment.mountImageIntoNode;
      unmountIDFromEnvironment =
        ReactComponentEnvironment.unmountIDFromEnvironment;
      ReactComponent.BackendIDOperations =
        ReactComponentEnvironment.BackendIDOperations;
      injected = true;
    }
  },

  /**
   * @internal
   */
  LifeCycle: ComponentLifeCycle,

  /**
   * Injected module that provides ability to mutate individual properties.
   * Injected into the base class because many different subclasses need access
   * to this.
   *
   * @internal
   */
  BackendIDOperations: null,

  /**
   * Base functionality for every ReactComponent constructor. Mixed into the
   * `ReactComponent` prototype, but exposed statically for easy access.
   *
   * @lends {ReactComponent.prototype}
   */
  Mixin: {

    /**
     * Checks whether or not this component is mounted.
     *
     * @return {boolean} True if mounted, false otherwise.
     * @final
     * @protected
     */
    isMounted: function() {
      return this._lifeCycleState === ComponentLifeCycle.MOUNTED;
    },

    /**
     * Sets a subset of the props.
     *
     * @param {object} partialProps Subset of the next props.
     * @param {?function} callback Called after props are updated.
     * @final
     * @public
     */
    setProps: function(partialProps, callback) {
      // Merge with the pending element if it exists, otherwise with existing
      // element props.
      var element = this._pendingElement || this._currentElement;
      this.replaceProps(
        assign({}, element.props, partialProps),
        callback
      );
    },

    /**
     * Replaces all of the props.
     *
     * @param {object} props New props.
     * @param {?function} callback Called after props are updated.
     * @final
     * @public
     */
    replaceProps: function(props, callback) {
      ("production" !== process.env.NODE_ENV ? invariant(
        this.isMounted(),
        'replaceProps(...): Can only update a mounted component.'
      ) : invariant(this.isMounted()));
      ("production" !== process.env.NODE_ENV ? invariant(
        this._mountDepth === 0,
        'replaceProps(...): You called `setProps` or `replaceProps` on a ' +
        'component with a parent. This is an anti-pattern since props will ' +
        'get reactively updated when rendered. Instead, change the owner\'s ' +
        '`render` method to pass the correct value as props to the component ' +
        'where it is created.'
      ) : invariant(this._mountDepth === 0));
      // This is a deoptimized path. We optimize for always having a element.
      // This creates an extra internal element.
      this._pendingElement = ReactElement.cloneAndReplaceProps(
        this._pendingElement || this._currentElement,
        props
      );
      ReactUpdates.enqueueUpdate(this, callback);
    },

    /**
     * Schedule a partial update to the props. Only used for internal testing.
     *
     * @param {object} partialProps Subset of the next props.
     * @param {?function} callback Called after props are updated.
     * @final
     * @internal
     */
    _setPropsInternal: function(partialProps, callback) {
      // This is a deoptimized path. We optimize for always having a element.
      // This creates an extra internal element.
      var element = this._pendingElement || this._currentElement;
      this._pendingElement = ReactElement.cloneAndReplaceProps(
        element,
        assign({}, element.props, partialProps)
      );
      ReactUpdates.enqueueUpdate(this, callback);
    },

    /**
     * Base constructor for all React components.
     *
     * Subclasses that override this method should make sure to invoke
     * `ReactComponent.Mixin.construct.call(this, ...)`.
     *
     * @param {ReactElement} element
     * @internal
     */
    construct: function(element) {
      // This is the public exposed props object after it has been processed
      // with default props. The element's props represents the true internal
      // state of the props.
      this.props = element.props;
      // Record the component responsible for creating this component.
      // This is accessible through the element but we maintain an extra
      // field for compatibility with devtools and as a way to make an
      // incremental update. TODO: Consider deprecating this field.
      this._owner = element._owner;

      // All components start unmounted.
      this._lifeCycleState = ComponentLifeCycle.UNMOUNTED;

      // See ReactUpdates.
      this._pendingCallbacks = null;

      // We keep the old element and a reference to the pending element
      // to track updates.
      this._currentElement = element;
      this._pendingElement = null;
    },

    /**
     * Initializes the component, renders markup, and registers event listeners.
     *
     * NOTE: This does not insert any nodes into the DOM.
     *
     * Subclasses that override this method should make sure to invoke
     * `ReactComponent.Mixin.mountComponent.call(this, ...)`.
     *
     * @param {string} rootID DOM ID of the root node.
     * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction
     * @param {number} mountDepth number of components in the owner hierarchy.
     * @return {?string} Rendered markup to be inserted into the DOM.
     * @internal
     */
    mountComponent: function(rootID, transaction, mountDepth) {
      ("production" !== process.env.NODE_ENV ? invariant(
        !this.isMounted(),
        'mountComponent(%s, ...): Can only mount an unmounted component. ' +
        'Make sure to avoid storing components between renders or reusing a ' +
        'single component instance in multiple places.',
        rootID
      ) : invariant(!this.isMounted()));
      var ref = this._currentElement.ref;
      if (ref != null) {
        var owner = this._currentElement._owner;
        ReactOwner.addComponentAsRefTo(this, ref, owner);
      }
      this._rootNodeID = rootID;
      this._lifeCycleState = ComponentLifeCycle.MOUNTED;
      this._mountDepth = mountDepth;
      // Effectively: return '';
    },

    /**
     * Releases any resources allocated by `mountComponent`.
     *
     * NOTE: This does not remove any nodes from the DOM.
     *
     * Subclasses that override this method should make sure to invoke
     * `ReactComponent.Mixin.unmountComponent.call(this)`.
     *
     * @internal
     */
    unmountComponent: function() {
      ("production" !== process.env.NODE_ENV ? invariant(
        this.isMounted(),
        'unmountComponent(): Can only unmount a mounted component.'
      ) : invariant(this.isMounted()));
      var ref = this._currentElement.ref;
      if (ref != null) {
        ReactOwner.removeComponentAsRefFrom(this, ref, this._owner);
      }
      unmountIDFromEnvironment(this._rootNodeID);
      this._rootNodeID = null;
      this._lifeCycleState = ComponentLifeCycle.UNMOUNTED;
    },

    /**
     * Given a new instance of this component, updates the rendered DOM nodes
     * as if that instance was rendered instead.
     *
     * Subclasses that override this method should make sure to invoke
     * `ReactComponent.Mixin.receiveComponent.call(this, ...)`.
     *
     * @param {object} nextComponent Next set of properties.
     * @param {ReactReconcileTransaction} transaction
     * @internal
     */
    receiveComponent: function(nextElement, transaction) {
      ("production" !== process.env.NODE_ENV ? invariant(
        this.isMounted(),
        'receiveComponent(...): Can only update a mounted component.'
      ) : invariant(this.isMounted()));
      this._pendingElement = nextElement;
      this.performUpdateIfNecessary(transaction);
    },

    /**
     * If `_pendingElement` is set, update the component.
     *
     * @param {ReactReconcileTransaction} transaction
     * @internal
     */
    performUpdateIfNecessary: function(transaction) {
      if (this._pendingElement == null) {
        return;
      }
      var prevElement = this._currentElement;
      var nextElement = this._pendingElement;
      this._currentElement = nextElement;
      this.props = nextElement.props;
      this._owner = nextElement._owner;
      this._pendingElement = null;
      this.updateComponent(transaction, prevElement);
    },

    /**
     * Updates the component's currently mounted representation.
     *
     * @param {ReactReconcileTransaction} transaction
     * @param {object} prevElement
     * @internal
     */
    updateComponent: function(transaction, prevElement) {
      var nextElement = this._currentElement;

      // If either the owner or a `ref` has changed, make sure the newest owner
      // has stored a reference to `this`, and the previous owner (if different)
      // has forgotten the reference to `this`. We use the element instead
      // of the public this.props because the post processing cannot determine
      // a ref. The ref conceptually lives on the element.

      // TODO: Should this even be possible? The owner cannot change because
      // it's forbidden by shouldUpdateReactComponent. The ref can change
      // if you swap the keys of but not the refs. Reconsider where this check
      // is made. It probably belongs where the key checking and
      // instantiateReactComponent is done.

      if (nextElement._owner !== prevElement._owner ||
          nextElement.ref !== prevElement.ref) {
        if (prevElement.ref != null) {
          ReactOwner.removeComponentAsRefFrom(
            this, prevElement.ref, prevElement._owner
          );
        }
        // Correct, even if the owner is the same, and only the ref has changed.
        if (nextElement.ref != null) {
          ReactOwner.addComponentAsRefTo(
            this,
            nextElement.ref,
            nextElement._owner
          );
        }
      }
    },

    /**
     * Mounts this component and inserts it into the DOM.
     *
     * @param {string} rootID DOM ID of the root node.
     * @param {DOMElement} container DOM element to mount into.
     * @param {boolean} shouldReuseMarkup If true, do not insert markup
     * @final
     * @internal
     * @see {ReactMount.render}
     */
    mountComponentIntoNode: function(rootID, container, shouldReuseMarkup) {
      var transaction = ReactUpdates.ReactReconcileTransaction.getPooled();
      transaction.perform(
        this._mountComponentIntoNode,
        this,
        rootID,
        container,
        transaction,
        shouldReuseMarkup
      );
      ReactUpdates.ReactReconcileTransaction.release(transaction);
    },

    /**
     * @param {string} rootID DOM ID of the root node.
     * @param {DOMElement} container DOM element to mount into.
     * @param {ReactReconcileTransaction} transaction
     * @param {boolean} shouldReuseMarkup If true, do not insert markup
     * @final
     * @private
     */
    _mountComponentIntoNode: function(
        rootID,
        container,
        transaction,
        shouldReuseMarkup) {
      var markup = this.mountComponent(rootID, transaction, 0);
      mountImageIntoNode(markup, container, shouldReuseMarkup);
    },

    /**
     * Checks if this component is owned by the supplied `owner` component.
     *
     * @param {ReactComponent} owner Component to check.
     * @return {boolean} True if `owners` owns this component.
     * @final
     * @internal
     */
    isOwnedBy: function(owner) {
      return this._owner === owner;
    },

    /**
     * Gets another component, that shares the same owner as this one, by ref.
     *
     * @param {string} ref of a sibling Component.
     * @return {?ReactComponent} the actual sibling Component.
     * @final
     * @internal
     */
    getSiblingByRef: function(ref) {
      var owner = this._owner;
      if (!owner || !owner.refs) {
        return null;
      }
      return owner.refs[ref];
    }
  }
};

module.exports = ReactComponent;

}).call(this,require('_process'))
},{"./Object.assign":135,"./ReactElement":164,"./ReactOwner":180,"./ReactUpdates":197,"./invariant":247,"./keyMirror":253,"_process":91}],144:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactComponentBrowserEnvironment
 */

/*jslint evil: true */

"use strict";

var ReactDOMIDOperations = require("./ReactDOMIDOperations");
var ReactMarkupChecksum = require("./ReactMarkupChecksum");
var ReactMount = require("./ReactMount");
var ReactPerf = require("./ReactPerf");
var ReactReconcileTransaction = require("./ReactReconcileTransaction");

var getReactRootElementInContainer = require("./getReactRootElementInContainer");
var invariant = require("./invariant");
var setInnerHTML = require("./setInnerHTML");


var ELEMENT_NODE_TYPE = 1;
var DOC_NODE_TYPE = 9;


/**
 * Abstracts away all functionality of `ReactComponent` requires knowledge of
 * the browser context.
 */
var ReactComponentBrowserEnvironment = {
  ReactReconcileTransaction: ReactReconcileTransaction,

  BackendIDOperations: ReactDOMIDOperations,

  /**
   * If a particular environment requires that some resources be cleaned up,
   * specify this in the injected Mixin. In the DOM, we would likely want to
   * purge any cached node ID lookups.
   *
   * @private
   */
  unmountIDFromEnvironment: function(rootNodeID) {
    ReactMount.purgeID(rootNodeID);
  },

  /**
   * @param {string} markup Markup string to place into the DOM Element.
   * @param {DOMElement} container DOM Element to insert markup into.
   * @param {boolean} shouldReuseMarkup Should reuse the existing markup in the
   * container if possible.
   */
  mountImageIntoNode: ReactPerf.measure(
    'ReactComponentBrowserEnvironment',
    'mountImageIntoNode',
    function(markup, container, shouldReuseMarkup) {
      ("production" !== process.env.NODE_ENV ? invariant(
        container && (
          container.nodeType === ELEMENT_NODE_TYPE ||
            container.nodeType === DOC_NODE_TYPE
        ),
        'mountComponentIntoNode(...): Target container is not valid.'
      ) : invariant(container && (
        container.nodeType === ELEMENT_NODE_TYPE ||
          container.nodeType === DOC_NODE_TYPE
      )));

      if (shouldReuseMarkup) {
        if (ReactMarkupChecksum.canReuseMarkup(
          markup,
          getReactRootElementInContainer(container))) {
          return;
        } else {
          ("production" !== process.env.NODE_ENV ? invariant(
            container.nodeType !== DOC_NODE_TYPE,
            'You\'re trying to render a component to the document using ' +
            'server rendering but the checksum was invalid. This usually ' +
            'means you rendered a different component type or props on ' +
            'the client from the one on the server, or your render() ' +
            'methods are impure. React cannot handle this case due to ' +
            'cross-browser quirks by rendering at the document root. You ' +
            'should look for environment dependent code in your components ' +
            'and ensure the props are the same client and server side.'
          ) : invariant(container.nodeType !== DOC_NODE_TYPE));

          if ("production" !== process.env.NODE_ENV) {
            console.warn(
              'React attempted to use reuse markup in a container but the ' +
              'checksum was invalid. This generally means that you are ' +
              'using server rendering and the markup generated on the ' +
              'server was not what the client was expecting. React injected ' +
              'new markup to compensate which works but you have lost many ' +
              'of the benefits of server rendering. Instead, figure out ' +
              'why the markup being generated is different on the client ' +
              'or server.'
            );
          }
        }
      }

      ("production" !== process.env.NODE_ENV ? invariant(
        container.nodeType !== DOC_NODE_TYPE,
        'You\'re trying to render a component to the document but ' +
          'you didn\'t use server rendering. We can\'t do this ' +
          'without using server rendering due to cross-browser quirks. ' +
          'See renderComponentToString() for server rendering.'
      ) : invariant(container.nodeType !== DOC_NODE_TYPE));

      setInnerHTML(container, markup);
    }
  )
};

module.exports = ReactComponentBrowserEnvironment;

}).call(this,require('_process'))
},{"./ReactDOMIDOperations":153,"./ReactMarkupChecksum":175,"./ReactMount":176,"./ReactPerf":181,"./ReactReconcileTransaction":187,"./getReactRootElementInContainer":241,"./invariant":247,"./setInnerHTML":261,"_process":91}],145:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
* @providesModule ReactComponentWithPureRenderMixin
*/

"use strict";

var shallowEqual = require("./shallowEqual");

/**
 * If your React component's render function is "pure", e.g. it will render the
 * same result given the same props and state, provide this Mixin for a
 * considerable performance boost.
 *
 * Most React components have pure render functions.
 *
 * Example:
 *
 *   var ReactComponentWithPureRenderMixin =
 *     require('ReactComponentWithPureRenderMixin');
 *   React.createClass({
 *     mixins: [ReactComponentWithPureRenderMixin],
 *
 *     render: function() {
 *       return <div className={this.props.className}>foo</div>;
 *     }
 *   });
 *
 * Note: This only checks shallow equality for props and state. If these contain
 * complex data structures this mixin may have false-negatives for deeper
 * differences. Only mixin to components which have simple props and state, or
 * use `forceUpdate()` when you know deep data structures have changed.
 */
var ReactComponentWithPureRenderMixin = {
  shouldComponentUpdate: function(nextProps, nextState) {
    return !shallowEqual(this.props, nextProps) ||
           !shallowEqual(this.state, nextState);
  }
};

module.exports = ReactComponentWithPureRenderMixin;

},{"./shallowEqual":262}],146:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactCompositeComponent
 */

"use strict";

var ReactComponent = require("./ReactComponent");
var ReactContext = require("./ReactContext");
var ReactCurrentOwner = require("./ReactCurrentOwner");
var ReactElement = require("./ReactElement");
var ReactElementValidator = require("./ReactElementValidator");
var ReactEmptyComponent = require("./ReactEmptyComponent");
var ReactErrorUtils = require("./ReactErrorUtils");
var ReactLegacyElement = require("./ReactLegacyElement");
var ReactOwner = require("./ReactOwner");
var ReactPerf = require("./ReactPerf");
var ReactPropTransferer = require("./ReactPropTransferer");
var ReactPropTypeLocations = require("./ReactPropTypeLocations");
var ReactPropTypeLocationNames = require("./ReactPropTypeLocationNames");
var ReactUpdates = require("./ReactUpdates");

var assign = require("./Object.assign");
var instantiateReactComponent = require("./instantiateReactComponent");
var invariant = require("./invariant");
var keyMirror = require("./keyMirror");
var keyOf = require("./keyOf");
var monitorCodeUse = require("./monitorCodeUse");
var mapObject = require("./mapObject");
var shouldUpdateReactComponent = require("./shouldUpdateReactComponent");
var warning = require("./warning");

var MIXINS_KEY = keyOf({mixins: null});

/**
 * Policies that describe methods in `ReactCompositeComponentInterface`.
 */
var SpecPolicy = keyMirror({
  /**
   * These methods may be defined only once by the class specification or mixin.
   */
  DEFINE_ONCE: null,
  /**
   * These methods may be defined by both the class specification and mixins.
   * Subsequent definitions will be chained. These methods must return void.
   */
  DEFINE_MANY: null,
  /**
   * These methods are overriding the base ReactCompositeComponent class.
   */
  OVERRIDE_BASE: null,
  /**
   * These methods are similar to DEFINE_MANY, except we assume they return
   * objects. We try to merge the keys of the return values of all the mixed in
   * functions. If there is a key conflict we throw.
   */
  DEFINE_MANY_MERGED: null
});


var injectedMixins = [];

/**
 * Composite components are higher-level components that compose other composite
 * or native components.
 *
 * To create a new type of `ReactCompositeComponent`, pass a specification of
 * your new class to `React.createClass`. The only requirement of your class
 * specification is that you implement a `render` method.
 *
 *   var MyComponent = React.createClass({
 *     render: function() {
 *       return <div>Hello World</div>;
 *     }
 *   });
 *
 * The class specification supports a specific protocol of methods that have
 * special meaning (e.g. `render`). See `ReactCompositeComponentInterface` for
 * more the comprehensive protocol. Any other properties and methods in the
 * class specification will available on the prototype.
 *
 * @interface ReactCompositeComponentInterface
 * @internal
 */
var ReactCompositeComponentInterface = {

  /**
   * An array of Mixin objects to include when defining your component.
   *
   * @type {array}
   * @optional
   */
  mixins: SpecPolicy.DEFINE_MANY,

  /**
   * An object containing properties and methods that should be defined on
   * the component's constructor instead of its prototype (static methods).
   *
   * @type {object}
   * @optional
   */
  statics: SpecPolicy.DEFINE_MANY,

  /**
   * Definition of prop types for this component.
   *
   * @type {object}
   * @optional
   */
  propTypes: SpecPolicy.DEFINE_MANY,

  /**
   * Definition of context types for this component.
   *
   * @type {object}
   * @optional
   */
  contextTypes: SpecPolicy.DEFINE_MANY,

  /**
   * Definition of context types this component sets for its children.
   *
   * @type {object}
   * @optional
   */
  childContextTypes: SpecPolicy.DEFINE_MANY,

  // ==== Definition methods ====

  /**
   * Invoked when the component is mounted. Values in the mapping will be set on
   * `this.props` if that prop is not specified (i.e. using an `in` check).
   *
   * This method is invoked before `getInitialState` and therefore cannot rely
   * on `this.state` or use `this.setState`.
   *
   * @return {object}
   * @optional
   */
  getDefaultProps: SpecPolicy.DEFINE_MANY_MERGED,

  /**
   * Invoked once before the component is mounted. The return value will be used
   * as the initial value of `this.state`.
   *
   *   getInitialState: function() {
   *     return {
   *       isOn: false,
   *       fooBaz: new BazFoo()
   *     }
   *   }
   *
   * @return {object}
   * @optional
   */
  getInitialState: SpecPolicy.DEFINE_MANY_MERGED,

  /**
   * @return {object}
   * @optional
   */
  getChildContext: SpecPolicy.DEFINE_MANY_MERGED,

  /**
   * Uses props from `this.props` and state from `this.state` to render the
   * structure of the component.
   *
   * No guarantees are made about when or how often this method is invoked, so
   * it must not have side effects.
   *
   *   render: function() {
   *     var name = this.props.name;
   *     return <div>Hello, {name}!</div>;
   *   }
   *
   * @return {ReactComponent}
   * @nosideeffects
   * @required
   */
  render: SpecPolicy.DEFINE_ONCE,



  // ==== Delegate methods ====

  /**
   * Invoked when the component is initially created and about to be mounted.
   * This may have side effects, but any external subscriptions or data created
   * by this method must be cleaned up in `componentWillUnmount`.
   *
   * @optional
   */
  componentWillMount: SpecPolicy.DEFINE_MANY,

  /**
   * Invoked when the component has been mounted and has a DOM representation.
   * However, there is no guarantee that the DOM node is in the document.
   *
   * Use this as an opportunity to operate on the DOM when the component has
   * been mounted (initialized and rendered) for the first time.
   *
   * @param {DOMElement} rootNode DOM element representing the component.
   * @optional
   */
  componentDidMount: SpecPolicy.DEFINE_MANY,

  /**
   * Invoked before the component receives new props.
   *
   * Use this as an opportunity to react to a prop transition by updating the
   * state using `this.setState`. Current props are accessed via `this.props`.
   *
   *   componentWillReceiveProps: function(nextProps, nextContext) {
   *     this.setState({
   *       likesIncreasing: nextProps.likeCount > this.props.likeCount
   *     });
   *   }
   *
   * NOTE: There is no equivalent `componentWillReceiveState`. An incoming prop
   * transition may cause a state change, but the opposite is not true. If you
   * need it, you are probably looking for `componentWillUpdate`.
   *
   * @param {object} nextProps
   * @optional
   */
  componentWillReceiveProps: SpecPolicy.DEFINE_MANY,

  /**
   * Invoked while deciding if the component should be updated as a result of
   * receiving new props, state and/or context.
   *
   * Use this as an opportunity to `return false` when you're certain that the
   * transition to the new props/state/context will not require a component
   * update.
   *
   *   shouldComponentUpdate: function(nextProps, nextState, nextContext) {
   *     return !equal(nextProps, this.props) ||
   *       !equal(nextState, this.state) ||
   *       !equal(nextContext, this.context);
   *   }
   *
   * @param {object} nextProps
   * @param {?object} nextState
   * @param {?object} nextContext
   * @return {boolean} True if the component should update.
   * @optional
   */
  shouldComponentUpdate: SpecPolicy.DEFINE_ONCE,

  /**
   * Invoked when the component is about to update due to a transition from
   * `this.props`, `this.state` and `this.context` to `nextProps`, `nextState`
   * and `nextContext`.
   *
   * Use this as an opportunity to perform preparation before an update occurs.
   *
   * NOTE: You **cannot** use `this.setState()` in this method.
   *
   * @param {object} nextProps
   * @param {?object} nextState
   * @param {?object} nextContext
   * @param {ReactReconcileTransaction} transaction
   * @optional
   */
  componentWillUpdate: SpecPolicy.DEFINE_MANY,

  /**
   * Invoked when the component's DOM representation has been updated.
   *
   * Use this as an opportunity to operate on the DOM when the component has
   * been updated.
   *
   * @param {object} prevProps
   * @param {?object} prevState
   * @param {?object} prevContext
   * @param {DOMElement} rootNode DOM element representing the component.
   * @optional
   */
  componentDidUpdate: SpecPolicy.DEFINE_MANY,

  /**
   * Invoked when the component is about to be removed from its parent and have
   * its DOM representation destroyed.
   *
   * Use this as an opportunity to deallocate any external resources.
   *
   * NOTE: There is no `componentDidUnmount` since your component will have been
   * destroyed by that point.
   *
   * @optional
   */
  componentWillUnmount: SpecPolicy.DEFINE_MANY,



  // ==== Advanced methods ====

  /**
   * Updates the component's currently mounted DOM representation.
   *
   * By default, this implements React's rendering and reconciliation algorithm.
   * Sophisticated clients may wish to override this.
   *
   * @param {ReactReconcileTransaction} transaction
   * @internal
   * @overridable
   */
  updateComponent: SpecPolicy.OVERRIDE_BASE

};

/**
 * Mapping from class specification keys to special processing functions.
 *
 * Although these are declared like instance properties in the specification
 * when defining classes using `React.createClass`, they are actually static
 * and are accessible on the constructor instead of the prototype. Despite
 * being static, they must be defined outside of the "statics" key under
 * which all other static methods are defined.
 */
var RESERVED_SPEC_KEYS = {
  displayName: function(Constructor, displayName) {
    Constructor.displayName = displayName;
  },
  mixins: function(Constructor, mixins) {
    if (mixins) {
      for (var i = 0; i < mixins.length; i++) {
        mixSpecIntoComponent(Constructor, mixins[i]);
      }
    }
  },
  childContextTypes: function(Constructor, childContextTypes) {
    validateTypeDef(
      Constructor,
      childContextTypes,
      ReactPropTypeLocations.childContext
    );
    Constructor.childContextTypes = assign(
      {},
      Constructor.childContextTypes,
      childContextTypes
    );
  },
  contextTypes: function(Constructor, contextTypes) {
    validateTypeDef(
      Constructor,
      contextTypes,
      ReactPropTypeLocations.context
    );
    Constructor.contextTypes = assign(
      {},
      Constructor.contextTypes,
      contextTypes
    );
  },
  /**
   * Special case getDefaultProps which should move into statics but requires
   * automatic merging.
   */
  getDefaultProps: function(Constructor, getDefaultProps) {
    if (Constructor.getDefaultProps) {
      Constructor.getDefaultProps = createMergedResultFunction(
        Constructor.getDefaultProps,
        getDefaultProps
      );
    } else {
      Constructor.getDefaultProps = getDefaultProps;
    }
  },
  propTypes: function(Constructor, propTypes) {
    validateTypeDef(
      Constructor,
      propTypes,
      ReactPropTypeLocations.prop
    );
    Constructor.propTypes = assign(
      {},
      Constructor.propTypes,
      propTypes
    );
  },
  statics: function(Constructor, statics) {
    mixStaticSpecIntoComponent(Constructor, statics);
  }
};

function getDeclarationErrorAddendum(component) {
  var owner = component._owner || null;
  if (owner && owner.constructor && owner.constructor.displayName) {
    return ' Check the render method of `' + owner.constructor.displayName +
      '`.';
  }
  return '';
}

function validateTypeDef(Constructor, typeDef, location) {
  for (var propName in typeDef) {
    if (typeDef.hasOwnProperty(propName)) {
      ("production" !== process.env.NODE_ENV ? invariant(
        typeof typeDef[propName] == 'function',
        '%s: %s type `%s` is invalid; it must be a function, usually from ' +
        'React.PropTypes.',
        Constructor.displayName || 'ReactCompositeComponent',
        ReactPropTypeLocationNames[location],
        propName
      ) : invariant(typeof typeDef[propName] == 'function'));
    }
  }
}

function validateMethodOverride(proto, name) {
  var specPolicy = ReactCompositeComponentInterface.hasOwnProperty(name) ?
    ReactCompositeComponentInterface[name] :
    null;

  // Disallow overriding of base class methods unless explicitly allowed.
  if (ReactCompositeComponentMixin.hasOwnProperty(name)) {
    ("production" !== process.env.NODE_ENV ? invariant(
      specPolicy === SpecPolicy.OVERRIDE_BASE,
      'ReactCompositeComponentInterface: You are attempting to override ' +
      '`%s` from your class specification. Ensure that your method names ' +
      'do not overlap with React methods.',
      name
    ) : invariant(specPolicy === SpecPolicy.OVERRIDE_BASE));
  }

  // Disallow defining methods more than once unless explicitly allowed.
  if (proto.hasOwnProperty(name)) {
    ("production" !== process.env.NODE_ENV ? invariant(
      specPolicy === SpecPolicy.DEFINE_MANY ||
      specPolicy === SpecPolicy.DEFINE_MANY_MERGED,
      'ReactCompositeComponentInterface: You are attempting to define ' +
      '`%s` on your component more than once. This conflict may be due ' +
      'to a mixin.',
      name
    ) : invariant(specPolicy === SpecPolicy.DEFINE_MANY ||
    specPolicy === SpecPolicy.DEFINE_MANY_MERGED));
  }
}

function validateLifeCycleOnReplaceState(instance) {
  var compositeLifeCycleState = instance._compositeLifeCycleState;
  ("production" !== process.env.NODE_ENV ? invariant(
    instance.isMounted() ||
      compositeLifeCycleState === CompositeLifeCycle.MOUNTING,
    'replaceState(...): Can only update a mounted or mounting component.'
  ) : invariant(instance.isMounted() ||
    compositeLifeCycleState === CompositeLifeCycle.MOUNTING));
  ("production" !== process.env.NODE_ENV ? invariant(
    ReactCurrentOwner.current == null,
    'replaceState(...): Cannot update during an existing state transition ' +
    '(such as within `render`). Render methods should be a pure function ' +
    'of props and state.'
  ) : invariant(ReactCurrentOwner.current == null));
  ("production" !== process.env.NODE_ENV ? invariant(compositeLifeCycleState !== CompositeLifeCycle.UNMOUNTING,
    'replaceState(...): Cannot update while unmounting component. This ' +
    'usually means you called setState() on an unmounted component.'
  ) : invariant(compositeLifeCycleState !== CompositeLifeCycle.UNMOUNTING));
}

/**
 * Mixin helper which handles policy validation and reserved
 * specification keys when building `ReactCompositeComponent` classses.
 */
function mixSpecIntoComponent(Constructor, spec) {
  if (!spec) {
    return;
  }

  ("production" !== process.env.NODE_ENV ? invariant(
    !ReactLegacyElement.isValidFactory(spec),
    'ReactCompositeComponent: You\'re attempting to ' +
    'use a component class as a mixin. Instead, just use a regular object.'
  ) : invariant(!ReactLegacyElement.isValidFactory(spec)));
  ("production" !== process.env.NODE_ENV ? invariant(
    !ReactElement.isValidElement(spec),
    'ReactCompositeComponent: You\'re attempting to ' +
    'use a component as a mixin. Instead, just use a regular object.'
  ) : invariant(!ReactElement.isValidElement(spec)));

  var proto = Constructor.prototype;

  // By handling mixins before any other properties, we ensure the same
  // chaining order is applied to methods with DEFINE_MANY policy, whether
  // mixins are listed before or after these methods in the spec.
  if (spec.hasOwnProperty(MIXINS_KEY)) {
    RESERVED_SPEC_KEYS.mixins(Constructor, spec.mixins);
  }

  for (var name in spec) {
    if (!spec.hasOwnProperty(name)) {
      continue;
    }

    if (name === MIXINS_KEY) {
      // We have already handled mixins in a special case above
      continue;
    }

    var property = spec[name];
    validateMethodOverride(proto, name);

    if (RESERVED_SPEC_KEYS.hasOwnProperty(name)) {
      RESERVED_SPEC_KEYS[name](Constructor, property);
    } else {
      // Setup methods on prototype:
      // The following member methods should not be automatically bound:
      // 1. Expected ReactCompositeComponent methods (in the "interface").
      // 2. Overridden methods (that were mixed in).
      var isCompositeComponentMethod =
        ReactCompositeComponentInterface.hasOwnProperty(name);
      var isAlreadyDefined = proto.hasOwnProperty(name);
      var markedDontBind = property && property.__reactDontBind;
      var isFunction = typeof property === 'function';
      var shouldAutoBind =
        isFunction &&
        !isCompositeComponentMethod &&
        !isAlreadyDefined &&
        !markedDontBind;

      if (shouldAutoBind) {
        if (!proto.__reactAutoBindMap) {
          proto.__reactAutoBindMap = {};
        }
        proto.__reactAutoBindMap[name] = property;
        proto[name] = property;
      } else {
        if (isAlreadyDefined) {
          var specPolicy = ReactCompositeComponentInterface[name];

          // These cases should already be caught by validateMethodOverride
          ("production" !== process.env.NODE_ENV ? invariant(
            isCompositeComponentMethod && (
              specPolicy === SpecPolicy.DEFINE_MANY_MERGED ||
              specPolicy === SpecPolicy.DEFINE_MANY
            ),
            'ReactCompositeComponent: Unexpected spec policy %s for key %s ' +
            'when mixing in component specs.',
            specPolicy,
            name
          ) : invariant(isCompositeComponentMethod && (
            specPolicy === SpecPolicy.DEFINE_MANY_MERGED ||
            specPolicy === SpecPolicy.DEFINE_MANY
          )));

          // For methods which are defined more than once, call the existing
          // methods before calling the new property, merging if appropriate.
          if (specPolicy === SpecPolicy.DEFINE_MANY_MERGED) {
            proto[name] = createMergedResultFunction(proto[name], property);
          } else if (specPolicy === SpecPolicy.DEFINE_MANY) {
            proto[name] = createChainedFunction(proto[name], property);
          }
        } else {
          proto[name] = property;
          if ("production" !== process.env.NODE_ENV) {
            // Add verbose displayName to the function, which helps when looking
            // at profiling tools.
            if (typeof property === 'function' && spec.displayName) {
              proto[name].displayName = spec.displayName + '_' + name;
            }
          }
        }
      }
    }
  }
}

function mixStaticSpecIntoComponent(Constructor, statics) {
  if (!statics) {
    return;
  }
  for (var name in statics) {
    var property = statics[name];
    if (!statics.hasOwnProperty(name)) {
      continue;
    }

    var isReserved = name in RESERVED_SPEC_KEYS;
    ("production" !== process.env.NODE_ENV ? invariant(
      !isReserved,
      'ReactCompositeComponent: You are attempting to define a reserved ' +
      'property, `%s`, that shouldn\'t be on the "statics" key. Define it ' +
      'as an instance property instead; it will still be accessible on the ' +
      'constructor.',
      name
    ) : invariant(!isReserved));

    var isInherited = name in Constructor;
    ("production" !== process.env.NODE_ENV ? invariant(
      !isInherited,
      'ReactCompositeComponent: You are attempting to define ' +
      '`%s` on your component more than once. This conflict may be ' +
      'due to a mixin.',
      name
    ) : invariant(!isInherited));
    Constructor[name] = property;
  }
}

/**
 * Merge two objects, but throw if both contain the same key.
 *
 * @param {object} one The first object, which is mutated.
 * @param {object} two The second object
 * @return {object} one after it has been mutated to contain everything in two.
 */
function mergeObjectsWithNoDuplicateKeys(one, two) {
  ("production" !== process.env.NODE_ENV ? invariant(
    one && two && typeof one === 'object' && typeof two === 'object',
    'mergeObjectsWithNoDuplicateKeys(): Cannot merge non-objects'
  ) : invariant(one && two && typeof one === 'object' && typeof two === 'object'));

  mapObject(two, function(value, key) {
    ("production" !== process.env.NODE_ENV ? invariant(
      one[key] === undefined,
      'mergeObjectsWithNoDuplicateKeys(): ' +
      'Tried to merge two objects with the same key: `%s`. This conflict ' +
      'may be due to a mixin; in particular, this may be caused by two ' +
      'getInitialState() or getDefaultProps() methods returning objects ' +
      'with clashing keys.',
      key
    ) : invariant(one[key] === undefined));
    one[key] = value;
  });
  return one;
}

/**
 * Creates a function that invokes two functions and merges their return values.
 *
 * @param {function} one Function to invoke first.
 * @param {function} two Function to invoke second.
 * @return {function} Function that invokes the two argument functions.
 * @private
 */
function createMergedResultFunction(one, two) {
  return function mergedResult() {
    var a = one.apply(this, arguments);
    var b = two.apply(this, arguments);
    if (a == null) {
      return b;
    } else if (b == null) {
      return a;
    }
    return mergeObjectsWithNoDuplicateKeys(a, b);
  };
}

/**
 * Creates a function that invokes two functions and ignores their return vales.
 *
 * @param {function} one Function to invoke first.
 * @param {function} two Function to invoke second.
 * @return {function} Function that invokes the two argument functions.
 * @private
 */
function createChainedFunction(one, two) {
  return function chainedFunction() {
    one.apply(this, arguments);
    two.apply(this, arguments);
  };
}

/**
 * `ReactCompositeComponent` maintains an auxiliary life cycle state in
 * `this._compositeLifeCycleState` (which can be null).
 *
 * This is different from the life cycle state maintained by `ReactComponent` in
 * `this._lifeCycleState`. The following diagram shows how the states overlap in
 * time. There are times when the CompositeLifeCycle is null - at those times it
 * is only meaningful to look at ComponentLifeCycle alone.
 *
 * Top Row: ReactComponent.ComponentLifeCycle
 * Low Row: ReactComponent.CompositeLifeCycle
 *
 * +-------+---------------------------------+--------+
 * |  UN   |             MOUNTED             |   UN   |
 * |MOUNTED|                                 | MOUNTED|
 * +-------+---------------------------------+--------+
 * |       ^--------+   +-------+   +--------^        |
 * |       |        |   |       |   |        |        |
 * |    0--|MOUNTING|-0-|RECEIVE|-0-|   UN   |--->0   |
 * |       |        |   |PROPS  |   |MOUNTING|        |
 * |       |        |   |       |   |        |        |
 * |       |        |   |       |   |        |        |
 * |       +--------+   +-------+   +--------+        |
 * |       |                                 |        |
 * +-------+---------------------------------+--------+
 */
var CompositeLifeCycle = keyMirror({
  /**
   * Components in the process of being mounted respond to state changes
   * differently.
   */
  MOUNTING: null,
  /**
   * Components in the process of being unmounted are guarded against state
   * changes.
   */
  UNMOUNTING: null,
  /**
   * Components that are mounted and receiving new props respond to state
   * changes differently.
   */
  RECEIVING_PROPS: null
});

/**
 * @lends {ReactCompositeComponent.prototype}
 */
var ReactCompositeComponentMixin = {

  /**
   * Base constructor for all composite component.
   *
   * @param {ReactElement} element
   * @final
   * @internal
   */
  construct: function(element) {
    // Children can be either an array or more than one argument
    ReactComponent.Mixin.construct.apply(this, arguments);
    ReactOwner.Mixin.construct.apply(this, arguments);

    this.state = null;
    this._pendingState = null;

    // This is the public post-processed context. The real context and pending
    // context lives on the element.
    this.context = null;

    this._compositeLifeCycleState = null;
  },

  /**
   * Checks whether or not this composite component is mounted.
   * @return {boolean} True if mounted, false otherwise.
   * @protected
   * @final
   */
  isMounted: function() {
    return ReactComponent.Mixin.isMounted.call(this) &&
      this._compositeLifeCycleState !== CompositeLifeCycle.MOUNTING;
  },

  /**
   * Initializes the component, renders markup, and registers event listeners.
   *
   * @param {string} rootID DOM ID of the root node.
   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction
   * @param {number} mountDepth number of components in the owner hierarchy
   * @return {?string} Rendered markup to be inserted into the DOM.
   * @final
   * @internal
   */
  mountComponent: ReactPerf.measure(
    'ReactCompositeComponent',
    'mountComponent',
    function(rootID, transaction, mountDepth) {
      ReactComponent.Mixin.mountComponent.call(
        this,
        rootID,
        transaction,
        mountDepth
      );
      this._compositeLifeCycleState = CompositeLifeCycle.MOUNTING;

      if (this.__reactAutoBindMap) {
        this._bindAutoBindMethods();
      }

      this.context = this._processContext(this._currentElement._context);
      this.props = this._processProps(this.props);

      this.state = this.getInitialState ? this.getInitialState() : null;
      ("production" !== process.env.NODE_ENV ? invariant(
        typeof this.state === 'object' && !Array.isArray(this.state),
        '%s.getInitialState(): must return an object or null',
        this.constructor.displayName || 'ReactCompositeComponent'
      ) : invariant(typeof this.state === 'object' && !Array.isArray(this.state)));

      this._pendingState = null;
      this._pendingForceUpdate = false;

      if (this.componentWillMount) {
        this.componentWillMount();
        // When mounting, calls to `setState` by `componentWillMount` will set
        // `this._pendingState` without triggering a re-render.
        if (this._pendingState) {
          this.state = this._pendingState;
          this._pendingState = null;
        }
      }

      this._renderedComponent = instantiateReactComponent(
        this._renderValidatedComponent(),
        this._currentElement.type // The wrapping type
      );

      // Done with mounting, `setState` will now trigger UI changes.
      this._compositeLifeCycleState = null;
      var markup = this._renderedComponent.mountComponent(
        rootID,
        transaction,
        mountDepth + 1
      );
      if (this.componentDidMount) {
        transaction.getReactMountReady().enqueue(this.componentDidMount, this);
      }
      return markup;
    }
  ),

  /**
   * Releases any resources allocated by `mountComponent`.
   *
   * @final
   * @internal
   */
  unmountComponent: function() {
    this._compositeLifeCycleState = CompositeLifeCycle.UNMOUNTING;
    if (this.componentWillUnmount) {
      this.componentWillUnmount();
    }
    this._compositeLifeCycleState = null;

    this._renderedComponent.unmountComponent();
    this._renderedComponent = null;

    ReactComponent.Mixin.unmountComponent.call(this);

    // Some existing components rely on this.props even after they've been
    // destroyed (in event handlers).
    // TODO: this.props = null;
    // TODO: this.state = null;
  },

  /**
   * Sets a subset of the state. Always use this or `replaceState` to mutate
   * state. You should treat `this.state` as immutable.
   *
   * There is no guarantee that `this.state` will be immediately updated, so
   * accessing `this.state` after calling this method may return the old value.
   *
   * There is no guarantee that calls to `setState` will run synchronously,
   * as they may eventually be batched together.  You can provide an optional
   * callback that will be executed when the call to setState is actually
   * completed.
   *
   * @param {object} partialState Next partial state to be merged with state.
   * @param {?function} callback Called after state is updated.
   * @final
   * @protected
   */
  setState: function(partialState, callback) {
    ("production" !== process.env.NODE_ENV ? invariant(
      typeof partialState === 'object' || partialState == null,
      'setState(...): takes an object of state variables to update.'
    ) : invariant(typeof partialState === 'object' || partialState == null));
    if ("production" !== process.env.NODE_ENV){
      ("production" !== process.env.NODE_ENV ? warning(
        partialState != null,
        'setState(...): You passed an undefined or null state object; ' +
        'instead, use forceUpdate().'
      ) : null);
    }
    // Merge with `_pendingState` if it exists, otherwise with existing state.
    this.replaceState(
      assign({}, this._pendingState || this.state, partialState),
      callback
    );
  },

  /**
   * Replaces all of the state. Always use this or `setState` to mutate state.
   * You should treat `this.state` as immutable.
   *
   * There is no guarantee that `this.state` will be immediately updated, so
   * accessing `this.state` after calling this method may return the old value.
   *
   * @param {object} completeState Next state.
   * @param {?function} callback Called after state is updated.
   * @final
   * @protected
   */
  replaceState: function(completeState, callback) {
    validateLifeCycleOnReplaceState(this);
    this._pendingState = completeState;
    if (this._compositeLifeCycleState !== CompositeLifeCycle.MOUNTING) {
      // If we're in a componentWillMount handler, don't enqueue a rerender
      // because ReactUpdates assumes we're in a browser context (which is wrong
      // for server rendering) and we're about to do a render anyway.
      // TODO: The callback here is ignored when setState is called from
      // componentWillMount. Either fix it or disallow doing so completely in
      // favor of getInitialState.
      ReactUpdates.enqueueUpdate(this, callback);
    }
  },

  /**
   * Filters the context object to only contain keys specified in
   * `contextTypes`, and asserts that they are valid.
   *
   * @param {object} context
   * @return {?object}
   * @private
   */
  _processContext: function(context) {
    var maskedContext = null;
    var contextTypes = this.constructor.contextTypes;
    if (contextTypes) {
      maskedContext = {};
      for (var contextName in contextTypes) {
        maskedContext[contextName] = context[contextName];
      }
      if ("production" !== process.env.NODE_ENV) {
        this._checkPropTypes(
          contextTypes,
          maskedContext,
          ReactPropTypeLocations.context
        );
      }
    }
    return maskedContext;
  },

  /**
   * @param {object} currentContext
   * @return {object}
   * @private
   */
  _processChildContext: function(currentContext) {
    var childContext = this.getChildContext && this.getChildContext();
    var displayName = this.constructor.displayName || 'ReactCompositeComponent';
    if (childContext) {
      ("production" !== process.env.NODE_ENV ? invariant(
        typeof this.constructor.childContextTypes === 'object',
        '%s.getChildContext(): childContextTypes must be defined in order to ' +
        'use getChildContext().',
        displayName
      ) : invariant(typeof this.constructor.childContextTypes === 'object'));
      if ("production" !== process.env.NODE_ENV) {
        this._checkPropTypes(
          this.constructor.childContextTypes,
          childContext,
          ReactPropTypeLocations.childContext
        );
      }
      for (var name in childContext) {
        ("production" !== process.env.NODE_ENV ? invariant(
          name in this.constructor.childContextTypes,
          '%s.getChildContext(): key "%s" is not defined in childContextTypes.',
          displayName,
          name
        ) : invariant(name in this.constructor.childContextTypes));
      }
      return assign({}, currentContext, childContext);
    }
    return currentContext;
  },

  /**
   * Processes props by setting default values for unspecified props and
   * asserting that the props are valid. Does not mutate its argument; returns
   * a new props object with defaults merged in.
   *
   * @param {object} newProps
   * @return {object}
   * @private
   */
  _processProps: function(newProps) {
    if ("production" !== process.env.NODE_ENV) {
      var propTypes = this.constructor.propTypes;
      if (propTypes) {
        this._checkPropTypes(propTypes, newProps, ReactPropTypeLocations.prop);
      }
    }
    return newProps;
  },

  /**
   * Assert that the props are valid
   *
   * @param {object} propTypes Map of prop name to a ReactPropType
   * @param {object} props
   * @param {string} location e.g. "prop", "context", "child context"
   * @private
   */
  _checkPropTypes: function(propTypes, props, location) {
    // TODO: Stop validating prop types here and only use the element
    // validation.
    var componentName = this.constructor.displayName;
    for (var propName in propTypes) {
      if (propTypes.hasOwnProperty(propName)) {
        var error =
          propTypes[propName](props, propName, componentName, location);
        if (error instanceof Error) {
          // We may want to extend this logic for similar errors in
          // renderComponent calls, so I'm abstracting it away into
          // a function to minimize refactoring in the future
          var addendum = getDeclarationErrorAddendum(this);
          ("production" !== process.env.NODE_ENV ? warning(false, error.message + addendum) : null);
        }
      }
    }
  },

  /**
   * If any of `_pendingElement`, `_pendingState`, or `_pendingForceUpdate`
   * is set, update the component.
   *
   * @param {ReactReconcileTransaction} transaction
   * @internal
   */
  performUpdateIfNecessary: function(transaction) {
    var compositeLifeCycleState = this._compositeLifeCycleState;
    // Do not trigger a state transition if we are in the middle of mounting or
    // receiving props because both of those will already be doing this.
    if (compositeLifeCycleState === CompositeLifeCycle.MOUNTING ||
        compositeLifeCycleState === CompositeLifeCycle.RECEIVING_PROPS) {
      return;
    }

    if (this._pendingElement == null &&
        this._pendingState == null &&
        !this._pendingForceUpdate) {
      return;
    }

    var nextContext = this.context;
    var nextProps = this.props;
    var nextElement = this._currentElement;
    if (this._pendingElement != null) {
      nextElement = this._pendingElement;
      nextContext = this._processContext(nextElement._context);
      nextProps = this._processProps(nextElement.props);
      this._pendingElement = null;

      this._compositeLifeCycleState = CompositeLifeCycle.RECEIVING_PROPS;
      if (this.componentWillReceiveProps) {
        this.componentWillReceiveProps(nextProps, nextContext);
      }
    }

    this._compositeLifeCycleState = null;

    var nextState = this._pendingState || this.state;
    this._pendingState = null;

    var shouldUpdate =
      this._pendingForceUpdate ||
      !this.shouldComponentUpdate ||
      this.shouldComponentUpdate(nextProps, nextState, nextContext);

    if ("production" !== process.env.NODE_ENV) {
      if (typeof shouldUpdate === "undefined") {
        console.warn(
          (this.constructor.displayName || 'ReactCompositeComponent') +
          '.shouldComponentUpdate(): Returned undefined instead of a ' +
          'boolean value. Make sure to return true or false.'
        );
      }
    }

    if (shouldUpdate) {
      this._pendingForceUpdate = false;
      // Will set `this.props`, `this.state` and `this.context`.
      this._performComponentUpdate(
        nextElement,
        nextProps,
        nextState,
        nextContext,
        transaction
      );
    } else {
      // If it's determined that a component should not update, we still want
      // to set props and state.
      this._currentElement = nextElement;
      this.props = nextProps;
      this.state = nextState;
      this.context = nextContext;

      // Owner cannot change because shouldUpdateReactComponent doesn't allow
      // it. TODO: Remove this._owner completely.
      this._owner = nextElement._owner;
    }
  },

  /**
   * Merges new props and state, notifies delegate methods of update and
   * performs update.
   *
   * @param {ReactElement} nextElement Next element
   * @param {object} nextProps Next public object to set as properties.
   * @param {?object} nextState Next object to set as state.
   * @param {?object} nextContext Next public object to set as context.
   * @param {ReactReconcileTransaction} transaction
   * @private
   */
  _performComponentUpdate: function(
    nextElement,
    nextProps,
    nextState,
    nextContext,
    transaction
  ) {
    var prevElement = this._currentElement;
    var prevProps = this.props;
    var prevState = this.state;
    var prevContext = this.context;

    if (this.componentWillUpdate) {
      this.componentWillUpdate(nextProps, nextState, nextContext);
    }

    this._currentElement = nextElement;
    this.props = nextProps;
    this.state = nextState;
    this.context = nextContext;

    // Owner cannot change because shouldUpdateReactComponent doesn't allow
    // it. TODO: Remove this._owner completely.
    this._owner = nextElement._owner;

    this.updateComponent(
      transaction,
      prevElement
    );

    if (this.componentDidUpdate) {
      transaction.getReactMountReady().enqueue(
        this.componentDidUpdate.bind(this, prevProps, prevState, prevContext),
        this
      );
    }
  },

  receiveComponent: function(nextElement, transaction) {
    if (nextElement === this._currentElement &&
        nextElement._owner != null) {
      // Since elements are immutable after the owner is rendered,
      // we can do a cheap identity compare here to determine if this is a
      // superfluous reconcile. It's possible for state to be mutable but such
      // change should trigger an update of the owner which would recreate
      // the element. We explicitly check for the existence of an owner since
      // it's possible for a element created outside a composite to be
      // deeply mutated and reused.
      return;
    }

    ReactComponent.Mixin.receiveComponent.call(
      this,
      nextElement,
      transaction
    );
  },

  /**
   * Updates the component's currently mounted DOM representation.
   *
   * By default, this implements React's rendering and reconciliation algorithm.
   * Sophisticated clients may wish to override this.
   *
   * @param {ReactReconcileTransaction} transaction
   * @param {ReactElement} prevElement
   * @internal
   * @overridable
   */
  updateComponent: ReactPerf.measure(
    'ReactCompositeComponent',
    'updateComponent',
    function(transaction, prevParentElement) {
      ReactComponent.Mixin.updateComponent.call(
        this,
        transaction,
        prevParentElement
      );

      var prevComponentInstance = this._renderedComponent;
      var prevElement = prevComponentInstance._currentElement;
      var nextElement = this._renderValidatedComponent();
      if (shouldUpdateReactComponent(prevElement, nextElement)) {
        prevComponentInstance.receiveComponent(nextElement, transaction);
      } else {
        // These two IDs are actually the same! But nothing should rely on that.
        var thisID = this._rootNodeID;
        var prevComponentID = prevComponentInstance._rootNodeID;
        prevComponentInstance.unmountComponent();
        this._renderedComponent = instantiateReactComponent(
          nextElement,
          this._currentElement.type
        );
        var nextMarkup = this._renderedComponent.mountComponent(
          thisID,
          transaction,
          this._mountDepth + 1
        );
        ReactComponent.BackendIDOperations.dangerouslyReplaceNodeWithMarkupByID(
          prevComponentID,
          nextMarkup
        );
      }
    }
  ),

  /**
   * Forces an update. This should only be invoked when it is known with
   * certainty that we are **not** in a DOM transaction.
   *
   * You may want to call this when you know that some deeper aspect of the
   * component's state has changed but `setState` was not called.
   *
   * This will not invoke `shouldUpdateComponent`, but it will invoke
   * `componentWillUpdate` and `componentDidUpdate`.
   *
   * @param {?function} callback Called after update is complete.
   * @final
   * @protected
   */
  forceUpdate: function(callback) {
    var compositeLifeCycleState = this._compositeLifeCycleState;
    ("production" !== process.env.NODE_ENV ? invariant(
      this.isMounted() ||
        compositeLifeCycleState === CompositeLifeCycle.MOUNTING,
      'forceUpdate(...): Can only force an update on mounted or mounting ' +
        'components.'
    ) : invariant(this.isMounted() ||
      compositeLifeCycleState === CompositeLifeCycle.MOUNTING));
    ("production" !== process.env.NODE_ENV ? invariant(
      compositeLifeCycleState !== CompositeLifeCycle.UNMOUNTING &&
      ReactCurrentOwner.current == null,
      'forceUpdate(...): Cannot force an update while unmounting component ' +
      'or within a `render` function.'
    ) : invariant(compositeLifeCycleState !== CompositeLifeCycle.UNMOUNTING &&
    ReactCurrentOwner.current == null));
    this._pendingForceUpdate = true;
    ReactUpdates.enqueueUpdate(this, callback);
  },

  /**
   * @private
   */
  _renderValidatedComponent: ReactPerf.measure(
    'ReactCompositeComponent',
    '_renderValidatedComponent',
    function() {
      var renderedComponent;
      var previousContext = ReactContext.current;
      ReactContext.current = this._processChildContext(
        this._currentElement._context
      );
      ReactCurrentOwner.current = this;
      try {
        renderedComponent = this.render();
        if (renderedComponent === null || renderedComponent === false) {
          renderedComponent = ReactEmptyComponent.getEmptyComponent();
          ReactEmptyComponent.registerNullComponentID(this._rootNodeID);
        } else {
          ReactEmptyComponent.deregisterNullComponentID(this._rootNodeID);
        }
      } finally {
        ReactContext.current = previousContext;
        ReactCurrentOwner.current = null;
      }
      ("production" !== process.env.NODE_ENV ? invariant(
        ReactElement.isValidElement(renderedComponent),
        '%s.render(): A valid ReactComponent must be returned. You may have ' +
          'returned undefined, an array or some other invalid object.',
        this.constructor.displayName || 'ReactCompositeComponent'
      ) : invariant(ReactElement.isValidElement(renderedComponent)));
      return renderedComponent;
    }
  ),

  /**
   * @private
   */
  _bindAutoBindMethods: function() {
    for (var autoBindKey in this.__reactAutoBindMap) {
      if (!this.__reactAutoBindMap.hasOwnProperty(autoBindKey)) {
        continue;
      }
      var method = this.__reactAutoBindMap[autoBindKey];
      this[autoBindKey] = this._bindAutoBindMethod(ReactErrorUtils.guard(
        method,
        this.constructor.displayName + '.' + autoBindKey
      ));
    }
  },

  /**
   * Binds a method to the component.
   *
   * @param {function} method Method to be bound.
   * @private
   */
  _bindAutoBindMethod: function(method) {
    var component = this;
    var boundMethod = method.bind(component);
    if ("production" !== process.env.NODE_ENV) {
      boundMethod.__reactBoundContext = component;
      boundMethod.__reactBoundMethod = method;
      boundMethod.__reactBoundArguments = null;
      var componentName = component.constructor.displayName;
      var _bind = boundMethod.bind;
      boundMethod.bind = function(newThis ) {for (var args=[],$__0=1,$__1=arguments.length;$__0<$__1;$__0++) args.push(arguments[$__0]);
        // User is trying to bind() an autobound method; we effectively will
        // ignore the value of "this" that the user is trying to use, so
        // let's warn.
        if (newThis !== component && newThis !== null) {
          monitorCodeUse('react_bind_warning', { component: componentName });
          console.warn(
            'bind(): React component methods may only be bound to the ' +
            'component instance. See ' + componentName
          );
        } else if (!args.length) {
          monitorCodeUse('react_bind_warning', { component: componentName });
          console.warn(
            'bind(): You are binding a component method to the component. ' +
            'React does this for you automatically in a high-performance ' +
            'way, so you can safely remove this call. See ' + componentName
          );
          return boundMethod;
        }
        var reboundMethod = _bind.apply(boundMethod, arguments);
        reboundMethod.__reactBoundContext = component;
        reboundMethod.__reactBoundMethod = method;
        reboundMethod.__reactBoundArguments = args;
        return reboundMethod;
      };
    }
    return boundMethod;
  }
};

var ReactCompositeComponentBase = function() {};
assign(
  ReactCompositeComponentBase.prototype,
  ReactComponent.Mixin,
  ReactOwner.Mixin,
  ReactPropTransferer.Mixin,
  ReactCompositeComponentMixin
);

/**
 * Module for creating composite components.
 *
 * @class ReactCompositeComponent
 * @extends ReactComponent
 * @extends ReactOwner
 * @extends ReactPropTransferer
 */
var ReactCompositeComponent = {

  LifeCycle: CompositeLifeCycle,

  Base: ReactCompositeComponentBase,

  /**
   * Creates a composite component class given a class specification.
   *
   * @param {object} spec Class specification (which must define `render`).
   * @return {function} Component constructor function.
   * @public
   */
  createClass: function(spec) {
    var Constructor = function(props) {
      // This constructor is overridden by mocks. The argument is used
      // by mocks to assert on what gets mounted. This will later be used
      // by the stand-alone class implementation.
    };
    Constructor.prototype = new ReactCompositeComponentBase();
    Constructor.prototype.constructor = Constructor;

    injectedMixins.forEach(
      mixSpecIntoComponent.bind(null, Constructor)
    );

    mixSpecIntoComponent(Constructor, spec);

    // Initialize the defaultProps property after all mixins have been merged
    if (Constructor.getDefaultProps) {
      Constructor.defaultProps = Constructor.getDefaultProps();
    }

    ("production" !== process.env.NODE_ENV ? invariant(
      Constructor.prototype.render,
      'createClass(...): Class specification must implement a `render` method.'
    ) : invariant(Constructor.prototype.render));

    if ("production" !== process.env.NODE_ENV) {
      if (Constructor.prototype.componentShouldUpdate) {
        monitorCodeUse(
          'react_component_should_update_warning',
          { component: spec.displayName }
        );
        console.warn(
          (spec.displayName || 'A component') + ' has a method called ' +
          'componentShouldUpdate(). Did you mean shouldComponentUpdate()? ' +
          'The name is phrased as a question because the function is ' +
          'expected to return a value.'
         );
      }
    }

    // Reduce time spent doing lookups by setting these on the prototype.
    for (var methodName in ReactCompositeComponentInterface) {
      if (!Constructor.prototype[methodName]) {
        Constructor.prototype[methodName] = null;
      }
    }

    if ("production" !== process.env.NODE_ENV) {
      return ReactLegacyElement.wrapFactory(
        ReactElementValidator.createFactory(Constructor)
      );
    }
    return ReactLegacyElement.wrapFactory(
      ReactElement.createFactory(Constructor)
    );
  },

  injection: {
    injectMixin: function(mixin) {
      injectedMixins.push(mixin);
    }
  }
};

module.exports = ReactCompositeComponent;

}).call(this,require('_process'))
},{"./Object.assign":135,"./ReactComponent":143,"./ReactContext":147,"./ReactCurrentOwner":148,"./ReactElement":164,"./ReactElementValidator":165,"./ReactEmptyComponent":166,"./ReactErrorUtils":167,"./ReactLegacyElement":173,"./ReactOwner":180,"./ReactPerf":181,"./ReactPropTransferer":182,"./ReactPropTypeLocationNames":183,"./ReactPropTypeLocations":184,"./ReactUpdates":197,"./instantiateReactComponent":246,"./invariant":247,"./keyMirror":253,"./keyOf":254,"./mapObject":255,"./monitorCodeUse":257,"./shouldUpdateReactComponent":263,"./warning":267,"_process":91}],147:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactContext
 */

"use strict";

var assign = require("./Object.assign");

/**
 * Keeps track of the current context.
 *
 * The context is automatically passed down the component ownership hierarchy
 * and is accessible via `this.context` on ReactCompositeComponents.
 */
var ReactContext = {

  /**
   * @internal
   * @type {object}
   */
  current: {},

  /**
   * Temporarily extends the current context while executing scopedCallback.
   *
   * A typical use case might look like
   *
   *  render: function() {
   *    var children = ReactContext.withContext({foo: 'foo'}, () => (
   *
   *    ));
   *    return <div>{children}</div>;
   *  }
   *
   * @param {object} newContext New context to merge into the existing context
   * @param {function} scopedCallback Callback to run with the new context
   * @return {ReactComponent|array<ReactComponent>}
   */
  withContext: function(newContext, scopedCallback) {
    var result;
    var previousContext = ReactContext.current;
    ReactContext.current = assign({}, previousContext, newContext);
    try {
      result = scopedCallback();
    } finally {
      ReactContext.current = previousContext;
    }
    return result;
  }

};

module.exports = ReactContext;

},{"./Object.assign":135}],148:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactCurrentOwner
 */

"use strict";

/**
 * Keeps track of the current owner.
 *
 * The current owner is the component who should own any components that are
 * currently being constructed.
 *
 * The depth indicate how many composite components are above this render level.
 */
var ReactCurrentOwner = {

  /**
   * @internal
   * @type {ReactComponent}
   */
  current: null

};

module.exports = ReactCurrentOwner;

},{}],149:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDOM
 * @typechecks static-only
 */

"use strict";

var ReactElement = require("./ReactElement");
var ReactElementValidator = require("./ReactElementValidator");
var ReactLegacyElement = require("./ReactLegacyElement");

var mapObject = require("./mapObject");

/**
 * Create a factory that creates HTML tag elements.
 *
 * @param {string} tag Tag name (e.g. `div`).
 * @private
 */
function createDOMFactory(tag) {
  if ("production" !== process.env.NODE_ENV) {
    return ReactLegacyElement.markNonLegacyFactory(
      ReactElementValidator.createFactory(tag)
    );
  }
  return ReactLegacyElement.markNonLegacyFactory(
    ReactElement.createFactory(tag)
  );
}

/**
 * Creates a mapping from supported HTML tags to `ReactDOMComponent` classes.
 * This is also accessible via `React.DOM`.
 *
 * @public
 */
var ReactDOM = mapObject({
  a: 'a',
  abbr: 'abbr',
  address: 'address',
  area: 'area',
  article: 'article',
  aside: 'aside',
  audio: 'audio',
  b: 'b',
  base: 'base',
  bdi: 'bdi',
  bdo: 'bdo',
  big: 'big',
  blockquote: 'blockquote',
  body: 'body',
  br: 'br',
  button: 'button',
  canvas: 'canvas',
  caption: 'caption',
  cite: 'cite',
  code: 'code',
  col: 'col',
  colgroup: 'colgroup',
  data: 'data',
  datalist: 'datalist',
  dd: 'dd',
  del: 'del',
  details: 'details',
  dfn: 'dfn',
  dialog: 'dialog',
  div: 'div',
  dl: 'dl',
  dt: 'dt',
  em: 'em',
  embed: 'embed',
  fieldset: 'fieldset',
  figcaption: 'figcaption',
  figure: 'figure',
  footer: 'footer',
  form: 'form',
  h1: 'h1',
  h2: 'h2',
  h3: 'h3',
  h4: 'h4',
  h5: 'h5',
  h6: 'h6',
  head: 'head',
  header: 'header',
  hr: 'hr',
  html: 'html',
  i: 'i',
  iframe: 'iframe',
  img: 'img',
  input: 'input',
  ins: 'ins',
  kbd: 'kbd',
  keygen: 'keygen',
  label: 'label',
  legend: 'legend',
  li: 'li',
  link: 'link',
  main: 'main',
  map: 'map',
  mark: 'mark',
  menu: 'menu',
  menuitem: 'menuitem',
  meta: 'meta',
  meter: 'meter',
  nav: 'nav',
  noscript: 'noscript',
  object: 'object',
  ol: 'ol',
  optgroup: 'optgroup',
  option: 'option',
  output: 'output',
  p: 'p',
  param: 'param',
  picture: 'picture',
  pre: 'pre',
  progress: 'progress',
  q: 'q',
  rp: 'rp',
  rt: 'rt',
  ruby: 'ruby',
  s: 's',
  samp: 'samp',
  script: 'script',
  section: 'section',
  select: 'select',
  small: 'small',
  source: 'source',
  span: 'span',
  strong: 'strong',
  style: 'style',
  sub: 'sub',
  summary: 'summary',
  sup: 'sup',
  table: 'table',
  tbody: 'tbody',
  td: 'td',
  textarea: 'textarea',
  tfoot: 'tfoot',
  th: 'th',
  thead: 'thead',
  time: 'time',
  title: 'title',
  tr: 'tr',
  track: 'track',
  u: 'u',
  ul: 'ul',
  'var': 'var',
  video: 'video',
  wbr: 'wbr',

  // SVG
  circle: 'circle',
  defs: 'defs',
  ellipse: 'ellipse',
  g: 'g',
  line: 'line',
  linearGradient: 'linearGradient',
  mask: 'mask',
  path: 'path',
  pattern: 'pattern',
  polygon: 'polygon',
  polyline: 'polyline',
  radialGradient: 'radialGradient',
  rect: 'rect',
  stop: 'stop',
  svg: 'svg',
  text: 'text',
  tspan: 'tspan'

}, createDOMFactory);

module.exports = ReactDOM;

}).call(this,require('_process'))
},{"./ReactElement":164,"./ReactElementValidator":165,"./ReactLegacyElement":173,"./mapObject":255,"_process":91}],150:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDOMButton
 */

"use strict";

var AutoFocusMixin = require("./AutoFocusMixin");
var ReactBrowserComponentMixin = require("./ReactBrowserComponentMixin");
var ReactCompositeComponent = require("./ReactCompositeComponent");
var ReactElement = require("./ReactElement");
var ReactDOM = require("./ReactDOM");

var keyMirror = require("./keyMirror");

// Store a reference to the <button> `ReactDOMComponent`. TODO: use string
var button = ReactElement.createFactory(ReactDOM.button.type);

var mouseListenerNames = keyMirror({
  onClick: true,
  onDoubleClick: true,
  onMouseDown: true,
  onMouseMove: true,
  onMouseUp: true,
  onClickCapture: true,
  onDoubleClickCapture: true,
  onMouseDownCapture: true,
  onMouseMoveCapture: true,
  onMouseUpCapture: true
});

/**
 * Implements a <button> native component that does not receive mouse events
 * when `disabled` is set.
 */
var ReactDOMButton = ReactCompositeComponent.createClass({
  displayName: 'ReactDOMButton',

  mixins: [AutoFocusMixin, ReactBrowserComponentMixin],

  render: function() {
    var props = {};

    // Copy the props; except the mouse listeners if we're disabled
    for (var key in this.props) {
      if (this.props.hasOwnProperty(key) &&
          (!this.props.disabled || !mouseListenerNames[key])) {
        props[key] = this.props[key];
      }
    }

    return button(props, this.props.children);
  }

});

module.exports = ReactDOMButton;

},{"./AutoFocusMixin":108,"./ReactBrowserComponentMixin":138,"./ReactCompositeComponent":146,"./ReactDOM":149,"./ReactElement":164,"./keyMirror":253}],151:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDOMComponent
 * @typechecks static-only
 */

"use strict";

var CSSPropertyOperations = require("./CSSPropertyOperations");
var DOMProperty = require("./DOMProperty");
var DOMPropertyOperations = require("./DOMPropertyOperations");
var ReactBrowserComponentMixin = require("./ReactBrowserComponentMixin");
var ReactComponent = require("./ReactComponent");
var ReactBrowserEventEmitter = require("./ReactBrowserEventEmitter");
var ReactMount = require("./ReactMount");
var ReactMultiChild = require("./ReactMultiChild");
var ReactPerf = require("./ReactPerf");

var assign = require("./Object.assign");
var escapeTextForBrowser = require("./escapeTextForBrowser");
var invariant = require("./invariant");
var isEventSupported = require("./isEventSupported");
var keyOf = require("./keyOf");
var monitorCodeUse = require("./monitorCodeUse");

var deleteListener = ReactBrowserEventEmitter.deleteListener;
var listenTo = ReactBrowserEventEmitter.listenTo;
var registrationNameModules = ReactBrowserEventEmitter.registrationNameModules;

// For quickly matching children type, to test if can be treated as content.
var CONTENT_TYPES = {'string': true, 'number': true};

var STYLE = keyOf({style: null});

var ELEMENT_NODE_TYPE = 1;

/**
 * @param {?object} props
 */
function assertValidProps(props) {
  if (!props) {
    return;
  }
  // Note the use of `==` which checks for null or undefined.
  ("production" !== process.env.NODE_ENV ? invariant(
    props.children == null || props.dangerouslySetInnerHTML == null,
    'Can only set one of `children` or `props.dangerouslySetInnerHTML`.'
  ) : invariant(props.children == null || props.dangerouslySetInnerHTML == null));
  if ("production" !== process.env.NODE_ENV) {
    if (props.contentEditable && props.children != null) {
      console.warn(
        'A component is `contentEditable` and contains `children` managed by ' +
        'React. It is now your responsibility to guarantee that none of those '+
        'nodes are unexpectedly modified or duplicated. This is probably not ' +
        'intentional.'
      );
    }
  }
  ("production" !== process.env.NODE_ENV ? invariant(
    props.style == null || typeof props.style === 'object',
    'The `style` prop expects a mapping from style properties to values, ' +
    'not a string.'
  ) : invariant(props.style == null || typeof props.style === 'object'));
}

function putListener(id, registrationName, listener, transaction) {
  if ("production" !== process.env.NODE_ENV) {
    // IE8 has no API for event capturing and the `onScroll` event doesn't
    // bubble.
    if (registrationName === 'onScroll' &&
        !isEventSupported('scroll', true)) {
      monitorCodeUse('react_no_scroll_event');
      console.warn('This browser doesn\'t support the `onScroll` event');
    }
  }
  var container = ReactMount.findReactContainerForID(id);
  if (container) {
    var doc = container.nodeType === ELEMENT_NODE_TYPE ?
      container.ownerDocument :
      container;
    listenTo(registrationName, doc);
  }
  transaction.getPutListenerQueue().enqueuePutListener(
    id,
    registrationName,
    listener
  );
}

// For HTML, certain tags should omit their close tag. We keep a whitelist for
// those special cased tags.

var omittedCloseTags = {
  'area': true,
  'base': true,
  'br': true,
  'col': true,
  'embed': true,
  'hr': true,
  'img': true,
  'input': true,
  'keygen': true,
  'link': true,
  'meta': true,
  'param': true,
  'source': true,
  'track': true,
  'wbr': true
  // NOTE: menuitem's close tag should be omitted, but that causes problems.
};

// We accept any tag to be rendered but since this gets injected into abitrary
// HTML, we want to make sure that it's a safe tag.
// http://www.w3.org/TR/REC-xml/#NT-Name

var VALID_TAG_REGEX = /^[a-zA-Z][a-zA-Z:_\.\-\d]*$/; // Simplified subset
var validatedTagCache = {};
var hasOwnProperty = {}.hasOwnProperty;

function validateDangerousTag(tag) {
  if (!hasOwnProperty.call(validatedTagCache, tag)) {
    ("production" !== process.env.NODE_ENV ? invariant(VALID_TAG_REGEX.test(tag), 'Invalid tag: %s', tag) : invariant(VALID_TAG_REGEX.test(tag)));
    validatedTagCache[tag] = true;
  }
}

/**
 * Creates a new React class that is idempotent and capable of containing other
 * React components. It accepts event listeners and DOM properties that are
 * valid according to `DOMProperty`.
 *
 *  - Event listeners: `onClick`, `onMouseDown`, etc.
 *  - DOM properties: `className`, `name`, `title`, etc.
 *
 * The `style` property functions differently from the DOM API. It accepts an
 * object mapping of style properties to values.
 *
 * @constructor ReactDOMComponent
 * @extends ReactComponent
 * @extends ReactMultiChild
 */
function ReactDOMComponent(tag) {
  validateDangerousTag(tag);
  this._tag = tag;
  this.tagName = tag.toUpperCase();
}

ReactDOMComponent.displayName = 'ReactDOMComponent';

ReactDOMComponent.Mixin = {

  /**
   * Generates root tag markup then recurses. This method has side effects and
   * is not idempotent.
   *
   * @internal
   * @param {string} rootID The root DOM ID for this node.
   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction
   * @param {number} mountDepth number of components in the owner hierarchy
   * @return {string} The computed markup.
   */
  mountComponent: ReactPerf.measure(
    'ReactDOMComponent',
    'mountComponent',
    function(rootID, transaction, mountDepth) {
      ReactComponent.Mixin.mountComponent.call(
        this,
        rootID,
        transaction,
        mountDepth
      );
      assertValidProps(this.props);
      var closeTag = omittedCloseTags[this._tag] ? '' : '</' + this._tag + '>';
      return (
        this._createOpenTagMarkupAndPutListeners(transaction) +
        this._createContentMarkup(transaction) +
        closeTag
      );
    }
  ),

  /**
   * Creates markup for the open tag and all attributes.
   *
   * This method has side effects because events get registered.
   *
   * Iterating over object properties is faster than iterating over arrays.
   * @see http://jsperf.com/obj-vs-arr-iteration
   *
   * @private
   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction
   * @return {string} Markup of opening tag.
   */
  _createOpenTagMarkupAndPutListeners: function(transaction) {
    var props = this.props;
    var ret = '<' + this._tag;

    for (var propKey in props) {
      if (!props.hasOwnProperty(propKey)) {
        continue;
      }
      var propValue = props[propKey];
      if (propValue == null) {
        continue;
      }
      if (registrationNameModules.hasOwnProperty(propKey)) {
        putListener(this._rootNodeID, propKey, propValue, transaction);
      } else {
        if (propKey === STYLE) {
          if (propValue) {
            propValue = props.style = assign({}, props.style);
          }
          propValue = CSSPropertyOperations.createMarkupForStyles(propValue);
        }
        var markup =
          DOMPropertyOperations.createMarkupForProperty(propKey, propValue);
        if (markup) {
          ret += ' ' + markup;
        }
      }
    }

    // For static pages, no need to put React ID and checksum. Saves lots of
    // bytes.
    if (transaction.renderToStaticMarkup) {
      return ret + '>';
    }

    var markupForID = DOMPropertyOperations.createMarkupForID(this._rootNodeID);
    return ret + ' ' + markupForID + '>';
  },

  /**
   * Creates markup for the content between the tags.
   *
   * @private
   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction
   * @return {string} Content markup.
   */
  _createContentMarkup: function(transaction) {
    // Intentional use of != to avoid catching zero/false.
    var innerHTML = this.props.dangerouslySetInnerHTML;
    if (innerHTML != null) {
      if (innerHTML.__html != null) {
        return innerHTML.__html;
      }
    } else {
      var contentToUse =
        CONTENT_TYPES[typeof this.props.children] ? this.props.children : null;
      var childrenToUse = contentToUse != null ? null : this.props.children;
      if (contentToUse != null) {
        return escapeTextForBrowser(contentToUse);
      } else if (childrenToUse != null) {
        var mountImages = this.mountChildren(
          childrenToUse,
          transaction
        );
        return mountImages.join('');
      }
    }
    return '';
  },

  receiveComponent: function(nextElement, transaction) {
    if (nextElement === this._currentElement &&
        nextElement._owner != null) {
      // Since elements are immutable after the owner is rendered,
      // we can do a cheap identity compare here to determine if this is a
      // superfluous reconcile. It's possible for state to be mutable but such
      // change should trigger an update of the owner which would recreate
      // the element. We explicitly check for the existence of an owner since
      // it's possible for a element created outside a composite to be
      // deeply mutated and reused.
      return;
    }

    ReactComponent.Mixin.receiveComponent.call(
      this,
      nextElement,
      transaction
    );
  },

  /**
   * Updates a native DOM component after it has already been allocated and
   * attached to the DOM. Reconciles the root DOM node, then recurses.
   *
   * @param {ReactReconcileTransaction} transaction
   * @param {ReactElement} prevElement
   * @internal
   * @overridable
   */
  updateComponent: ReactPerf.measure(
    'ReactDOMComponent',
    'updateComponent',
    function(transaction, prevElement) {
      assertValidProps(this._currentElement.props);
      ReactComponent.Mixin.updateComponent.call(
        this,
        transaction,
        prevElement
      );
      this._updateDOMProperties(prevElement.props, transaction);
      this._updateDOMChildren(prevElement.props, transaction);
    }
  ),

  /**
   * Reconciles the properties by detecting differences in property values and
   * updating the DOM as necessary. This function is probably the single most
   * critical path for performance optimization.
   *
   * TODO: Benchmark whether checking for changed values in memory actually
   *       improves performance (especially statically positioned elements).
   * TODO: Benchmark the effects of putting this at the top since 99% of props
   *       do not change for a given reconciliation.
   * TODO: Benchmark areas that can be improved with caching.
   *
   * @private
   * @param {object} lastProps
   * @param {ReactReconcileTransaction} transaction
   */
  _updateDOMProperties: function(lastProps, transaction) {
    var nextProps = this.props;
    var propKey;
    var styleName;
    var styleUpdates;
    for (propKey in lastProps) {
      if (nextProps.hasOwnProperty(propKey) ||
         !lastProps.hasOwnProperty(propKey)) {
        continue;
      }
      if (propKey === STYLE) {
        var lastStyle = lastProps[propKey];
        for (styleName in lastStyle) {
          if (lastStyle.hasOwnProperty(styleName)) {
            styleUpdates = styleUpdates || {};
            styleUpdates[styleName] = '';
          }
        }
      } else if (registrationNameModules.hasOwnProperty(propKey)) {
        deleteListener(this._rootNodeID, propKey);
      } else if (
          DOMProperty.isStandardName[propKey] ||
          DOMProperty.isCustomAttribute(propKey)) {
        ReactComponent.BackendIDOperations.deletePropertyByID(
          this._rootNodeID,
          propKey
        );
      }
    }
    for (propKey in nextProps) {
      var nextProp = nextProps[propKey];
      var lastProp = lastProps[propKey];
      if (!nextProps.hasOwnProperty(propKey) || nextProp === lastProp) {
        continue;
      }
      if (propKey === STYLE) {
        if (nextProp) {
          nextProp = nextProps.style = assign({}, nextProp);
        }
        if (lastProp) {
          // Unset styles on `lastProp` but not on `nextProp`.
          for (styleName in lastProp) {
            if (lastProp.hasOwnProperty(styleName) &&
                (!nextProp || !nextProp.hasOwnProperty(styleName))) {
              styleUpdates = styleUpdates || {};
              styleUpdates[styleName] = '';
            }
          }
          // Update styles that changed since `lastProp`.
          for (styleName in nextProp) {
            if (nextProp.hasOwnProperty(styleName) &&
                lastProp[styleName] !== nextProp[styleName]) {
              styleUpdates = styleUpdates || {};
              styleUpdates[styleName] = nextProp[styleName];
            }
          }
        } else {
          // Relies on `updateStylesByID` not mutating `styleUpdates`.
          styleUpdates = nextProp;
        }
      } else if (registrationNameModules.hasOwnProperty(propKey)) {
        putListener(this._rootNodeID, propKey, nextProp, transaction);
      } else if (
          DOMProperty.isStandardName[propKey] ||
          DOMProperty.isCustomAttribute(propKey)) {
        ReactComponent.BackendIDOperations.updatePropertyByID(
          this._rootNodeID,
          propKey,
          nextProp
        );
      }
    }
    if (styleUpdates) {
      ReactComponent.BackendIDOperations.updateStylesByID(
        this._rootNodeID,
        styleUpdates
      );
    }
  },

  /**
   * Reconciles the children with the various properties that affect the
   * children content.
   *
   * @param {object} lastProps
   * @param {ReactReconcileTransaction} transaction
   */
  _updateDOMChildren: function(lastProps, transaction) {
    var nextProps = this.props;

    var lastContent =
      CONTENT_TYPES[typeof lastProps.children] ? lastProps.children : null;
    var nextContent =
      CONTENT_TYPES[typeof nextProps.children] ? nextProps.children : null;

    var lastHtml =
      lastProps.dangerouslySetInnerHTML &&
      lastProps.dangerouslySetInnerHTML.__html;
    var nextHtml =
      nextProps.dangerouslySetInnerHTML &&
      nextProps.dangerouslySetInnerHTML.__html;

    // Note the use of `!=` which checks for null or undefined.
    var lastChildren = lastContent != null ? null : lastProps.children;
    var nextChildren = nextContent != null ? null : nextProps.children;

    // If we're switching from children to content/html or vice versa, remove
    // the old content
    var lastHasContentOrHtml = lastContent != null || lastHtml != null;
    var nextHasContentOrHtml = nextContent != null || nextHtml != null;
    if (lastChildren != null && nextChildren == null) {
      this.updateChildren(null, transaction);
    } else if (lastHasContentOrHtml && !nextHasContentOrHtml) {
      this.updateTextContent('');
    }

    if (nextContent != null) {
      if (lastContent !== nextContent) {
        this.updateTextContent('' + nextContent);
      }
    } else if (nextHtml != null) {
      if (lastHtml !== nextHtml) {
        ReactComponent.BackendIDOperations.updateInnerHTMLByID(
          this._rootNodeID,
          nextHtml
        );
      }
    } else if (nextChildren != null) {
      this.updateChildren(nextChildren, transaction);
    }
  },

  /**
   * Destroys all event registrations for this instance. Does not remove from
   * the DOM. That must be done by the parent.
   *
   * @internal
   */
  unmountComponent: function() {
    this.unmountChildren();
    ReactBrowserEventEmitter.deleteAllListeners(this._rootNodeID);
    ReactComponent.Mixin.unmountComponent.call(this);
  }

};

assign(
  ReactDOMComponent.prototype,
  ReactComponent.Mixin,
  ReactDOMComponent.Mixin,
  ReactMultiChild.Mixin,
  ReactBrowserComponentMixin
);

module.exports = ReactDOMComponent;

}).call(this,require('_process'))
},{"./CSSPropertyOperations":112,"./DOMProperty":118,"./DOMPropertyOperations":119,"./Object.assign":135,"./ReactBrowserComponentMixin":138,"./ReactBrowserEventEmitter":139,"./ReactComponent":143,"./ReactMount":176,"./ReactMultiChild":177,"./ReactPerf":181,"./escapeTextForBrowser":230,"./invariant":247,"./isEventSupported":248,"./keyOf":254,"./monitorCodeUse":257,"_process":91}],152:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDOMForm
 */

"use strict";

var EventConstants = require("./EventConstants");
var LocalEventTrapMixin = require("./LocalEventTrapMixin");
var ReactBrowserComponentMixin = require("./ReactBrowserComponentMixin");
var ReactCompositeComponent = require("./ReactCompositeComponent");
var ReactElement = require("./ReactElement");
var ReactDOM = require("./ReactDOM");

// Store a reference to the <form> `ReactDOMComponent`. TODO: use string
var form = ReactElement.createFactory(ReactDOM.form.type);

/**
 * Since onSubmit doesn't bubble OR capture on the top level in IE8, we need
 * to capture it on the <form> element itself. There are lots of hacks we could
 * do to accomplish this, but the most reliable is to make <form> a
 * composite component and use `componentDidMount` to attach the event handlers.
 */
var ReactDOMForm = ReactCompositeComponent.createClass({
  displayName: 'ReactDOMForm',

  mixins: [ReactBrowserComponentMixin, LocalEventTrapMixin],

  render: function() {
    // TODO: Instead of using `ReactDOM` directly, we should use JSX. However,
    // `jshint` fails to parse JSX so in order for linting to work in the open
    // source repo, we need to just use `ReactDOM.form`.
    return form(this.props);
  },

  componentDidMount: function() {
    this.trapBubbledEvent(EventConstants.topLevelTypes.topReset, 'reset');
    this.trapBubbledEvent(EventConstants.topLevelTypes.topSubmit, 'submit');
  }
});

module.exports = ReactDOMForm;

},{"./EventConstants":123,"./LocalEventTrapMixin":133,"./ReactBrowserComponentMixin":138,"./ReactCompositeComponent":146,"./ReactDOM":149,"./ReactElement":164}],153:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDOMIDOperations
 * @typechecks static-only
 */

/*jslint evil: true */

"use strict";

var CSSPropertyOperations = require("./CSSPropertyOperations");
var DOMChildrenOperations = require("./DOMChildrenOperations");
var DOMPropertyOperations = require("./DOMPropertyOperations");
var ReactMount = require("./ReactMount");
var ReactPerf = require("./ReactPerf");

var invariant = require("./invariant");
var setInnerHTML = require("./setInnerHTML");

/**
 * Errors for properties that should not be updated with `updatePropertyById()`.
 *
 * @type {object}
 * @private
 */
var INVALID_PROPERTY_ERRORS = {
  dangerouslySetInnerHTML:
    '`dangerouslySetInnerHTML` must be set using `updateInnerHTMLByID()`.',
  style: '`style` must be set using `updateStylesByID()`.'
};

/**
 * Operations used to process updates to DOM nodes. This is made injectable via
 * `ReactComponent.BackendIDOperations`.
 */
var ReactDOMIDOperations = {

  /**
   * Updates a DOM node with new property values. This should only be used to
   * update DOM properties in `DOMProperty`.
   *
   * @param {string} id ID of the node to update.
   * @param {string} name A valid property name, see `DOMProperty`.
   * @param {*} value New value of the property.
   * @internal
   */
  updatePropertyByID: ReactPerf.measure(
    'ReactDOMIDOperations',
    'updatePropertyByID',
    function(id, name, value) {
      var node = ReactMount.getNode(id);
      ("production" !== process.env.NODE_ENV ? invariant(
        !INVALID_PROPERTY_ERRORS.hasOwnProperty(name),
        'updatePropertyByID(...): %s',
        INVALID_PROPERTY_ERRORS[name]
      ) : invariant(!INVALID_PROPERTY_ERRORS.hasOwnProperty(name)));

      // If we're updating to null or undefined, we should remove the property
      // from the DOM node instead of inadvertantly setting to a string. This
      // brings us in line with the same behavior we have on initial render.
      if (value != null) {
        DOMPropertyOperations.setValueForProperty(node, name, value);
      } else {
        DOMPropertyOperations.deleteValueForProperty(node, name);
      }
    }
  ),

  /**
   * Updates a DOM node to remove a property. This should only be used to remove
   * DOM properties in `DOMProperty`.
   *
   * @param {string} id ID of the node to update.
   * @param {string} name A property name to remove, see `DOMProperty`.
   * @internal
   */
  deletePropertyByID: ReactPerf.measure(
    'ReactDOMIDOperations',
    'deletePropertyByID',
    function(id, name, value) {
      var node = ReactMount.getNode(id);
      ("production" !== process.env.NODE_ENV ? invariant(
        !INVALID_PROPERTY_ERRORS.hasOwnProperty(name),
        'updatePropertyByID(...): %s',
        INVALID_PROPERTY_ERRORS[name]
      ) : invariant(!INVALID_PROPERTY_ERRORS.hasOwnProperty(name)));
      DOMPropertyOperations.deleteValueForProperty(node, name, value);
    }
  ),

  /**
   * Updates a DOM node with new style values. If a value is specified as '',
   * the corresponding style property will be unset.
   *
   * @param {string} id ID of the node to update.
   * @param {object} styles Mapping from styles to values.
   * @internal
   */
  updateStylesByID: ReactPerf.measure(
    'ReactDOMIDOperations',
    'updateStylesByID',
    function(id, styles) {
      var node = ReactMount.getNode(id);
      CSSPropertyOperations.setValueForStyles(node, styles);
    }
  ),

  /**
   * Updates a DOM node's innerHTML.
   *
   * @param {string} id ID of the node to update.
   * @param {string} html An HTML string.
   * @internal
   */
  updateInnerHTMLByID: ReactPerf.measure(
    'ReactDOMIDOperations',
    'updateInnerHTMLByID',
    function(id, html) {
      var node = ReactMount.getNode(id);
      setInnerHTML(node, html);
    }
  ),

  /**
   * Updates a DOM node's text content set by `props.content`.
   *
   * @param {string} id ID of the node to update.
   * @param {string} content Text content.
   * @internal
   */
  updateTextContentByID: ReactPerf.measure(
    'ReactDOMIDOperations',
    'updateTextContentByID',
    function(id, content) {
      var node = ReactMount.getNode(id);
      DOMChildrenOperations.updateTextContent(node, content);
    }
  ),

  /**
   * Replaces a DOM node that exists in the document with markup.
   *
   * @param {string} id ID of child to be replaced.
   * @param {string} markup Dangerous markup to inject in place of child.
   * @internal
   * @see {Danger.dangerouslyReplaceNodeWithMarkup}
   */
  dangerouslyReplaceNodeWithMarkupByID: ReactPerf.measure(
    'ReactDOMIDOperations',
    'dangerouslyReplaceNodeWithMarkupByID',
    function(id, markup) {
      var node = ReactMount.getNode(id);
      DOMChildrenOperations.dangerouslyReplaceNodeWithMarkup(node, markup);
    }
  ),

  /**
   * Updates a component's children by processing a series of updates.
   *
   * @param {array<object>} updates List of update configurations.
   * @param {array<string>} markup List of markup strings.
   * @internal
   */
  dangerouslyProcessChildrenUpdates: ReactPerf.measure(
    'ReactDOMIDOperations',
    'dangerouslyProcessChildrenUpdates',
    function(updates, markup) {
      for (var i = 0; i < updates.length; i++) {
        updates[i].parentNode = ReactMount.getNode(updates[i].parentID);
      }
      DOMChildrenOperations.processUpdates(updates, markup);
    }
  )
};

module.exports = ReactDOMIDOperations;

}).call(this,require('_process'))
},{"./CSSPropertyOperations":112,"./DOMChildrenOperations":117,"./DOMPropertyOperations":119,"./ReactMount":176,"./ReactPerf":181,"./invariant":247,"./setInnerHTML":261,"_process":91}],154:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDOMImg
 */

"use strict";

var EventConstants = require("./EventConstants");
var LocalEventTrapMixin = require("./LocalEventTrapMixin");
var ReactBrowserComponentMixin = require("./ReactBrowserComponentMixin");
var ReactCompositeComponent = require("./ReactCompositeComponent");
var ReactElement = require("./ReactElement");
var ReactDOM = require("./ReactDOM");

// Store a reference to the <img> `ReactDOMComponent`. TODO: use string
var img = ReactElement.createFactory(ReactDOM.img.type);

/**
 * Since onLoad doesn't bubble OR capture on the top level in IE8, we need to
 * capture it on the <img> element itself. There are lots of hacks we could do
 * to accomplish this, but the most reliable is to make <img> a composite
 * component and use `componentDidMount` to attach the event handlers.
 */
var ReactDOMImg = ReactCompositeComponent.createClass({
  displayName: 'ReactDOMImg',
  tagName: 'IMG',

  mixins: [ReactBrowserComponentMixin, LocalEventTrapMixin],

  render: function() {
    return img(this.props);
  },

  componentDidMount: function() {
    this.trapBubbledEvent(EventConstants.topLevelTypes.topLoad, 'load');
    this.trapBubbledEvent(EventConstants.topLevelTypes.topError, 'error');
  }
});

module.exports = ReactDOMImg;

},{"./EventConstants":123,"./LocalEventTrapMixin":133,"./ReactBrowserComponentMixin":138,"./ReactCompositeComponent":146,"./ReactDOM":149,"./ReactElement":164}],155:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDOMInput
 */

"use strict";

var AutoFocusMixin = require("./AutoFocusMixin");
var DOMPropertyOperations = require("./DOMPropertyOperations");
var LinkedValueUtils = require("./LinkedValueUtils");
var ReactBrowserComponentMixin = require("./ReactBrowserComponentMixin");
var ReactCompositeComponent = require("./ReactCompositeComponent");
var ReactElement = require("./ReactElement");
var ReactDOM = require("./ReactDOM");
var ReactMount = require("./ReactMount");
var ReactUpdates = require("./ReactUpdates");

var assign = require("./Object.assign");
var invariant = require("./invariant");

// Store a reference to the <input> `ReactDOMComponent`. TODO: use string
var input = ReactElement.createFactory(ReactDOM.input.type);

var instancesByReactID = {};

function forceUpdateIfMounted() {
  /*jshint validthis:true */
  if (this.isMounted()) {
    this.forceUpdate();
  }
}

/**
 * Implements an <input> native component that allows setting these optional
 * props: `checked`, `value`, `defaultChecked`, and `defaultValue`.
 *
 * If `checked` or `value` are not supplied (or null/undefined), user actions
 * that affect the checked state or value will trigger updates to the element.
 *
 * If they are supplied (and not null/undefined), the rendered element will not
 * trigger updates to the element. Instead, the props must change in order for
 * the rendered element to be updated.
 *
 * The rendered element will be initialized as unchecked (or `defaultChecked`)
 * with an empty value (or `defaultValue`).
 *
 * @see http://www.w3.org/TR/2012/WD-html5-20121025/the-input-element.html
 */
var ReactDOMInput = ReactCompositeComponent.createClass({
  displayName: 'ReactDOMInput',

  mixins: [AutoFocusMixin, LinkedValueUtils.Mixin, ReactBrowserComponentMixin],

  getInitialState: function() {
    var defaultValue = this.props.defaultValue;
    return {
      initialChecked: this.props.defaultChecked || false,
      initialValue: defaultValue != null ? defaultValue : null
    };
  },

  render: function() {
    // Clone `this.props` so we don't mutate the input.
    var props = assign({}, this.props);

    props.defaultChecked = null;
    props.defaultValue = null;

    var value = LinkedValueUtils.getValue(this);
    props.value = value != null ? value : this.state.initialValue;

    var checked = LinkedValueUtils.getChecked(this);
    props.checked = checked != null ? checked : this.state.initialChecked;

    props.onChange = this._handleChange;

    return input(props, this.props.children);
  },

  componentDidMount: function() {
    var id = ReactMount.getID(this.getDOMNode());
    instancesByReactID[id] = this;
  },

  componentWillUnmount: function() {
    var rootNode = this.getDOMNode();
    var id = ReactMount.getID(rootNode);
    delete instancesByReactID[id];
  },

  componentDidUpdate: function(prevProps, prevState, prevContext) {
    var rootNode = this.getDOMNode();
    if (this.props.checked != null) {
      DOMPropertyOperations.setValueForProperty(
        rootNode,
        'checked',
        this.props.checked || false
      );
    }

    var value = LinkedValueUtils.getValue(this);
    if (value != null) {
      // Cast `value` to a string to ensure the value is set correctly. While
      // browsers typically do this as necessary, jsdom doesn't.
      DOMPropertyOperations.setValueForProperty(rootNode, 'value', '' + value);
    }
  },

  _handleChange: function(event) {
    var returnValue;
    var onChange = LinkedValueUtils.getOnChange(this);
    if (onChange) {
      returnValue = onChange.call(this, event);
    }
    // Here we use asap to wait until all updates have propagated, which
    // is important when using controlled components within layers:
    // https://github.com/facebook/react/issues/1698
    ReactUpdates.asap(forceUpdateIfMounted, this);

    var name = this.props.name;
    if (this.props.type === 'radio' && name != null) {
      var rootNode = this.getDOMNode();
      var queryRoot = rootNode;

      while (queryRoot.parentNode) {
        queryRoot = queryRoot.parentNode;
      }

      // If `rootNode.form` was non-null, then we could try `form.elements`,
      // but that sometimes behaves strangely in IE8. We could also try using
      // `form.getElementsByName`, but that will only return direct children
      // and won't include inputs that use the HTML5 `form=` attribute. Since
      // the input might not even be in a form, let's just use the global
      // `querySelectorAll` to ensure we don't miss anything.
      var group = queryRoot.querySelectorAll(
        'input[name=' + JSON.stringify('' + name) + '][type="radio"]');

      for (var i = 0, groupLen = group.length; i < groupLen; i++) {
        var otherNode = group[i];
        if (otherNode === rootNode ||
            otherNode.form !== rootNode.form) {
          continue;
        }
        var otherID = ReactMount.getID(otherNode);
        ("production" !== process.env.NODE_ENV ? invariant(
          otherID,
          'ReactDOMInput: Mixing React and non-React radio inputs with the ' +
          'same `name` is not supported.'
        ) : invariant(otherID));
        var otherInstance = instancesByReactID[otherID];
        ("production" !== process.env.NODE_ENV ? invariant(
          otherInstance,
          'ReactDOMInput: Unknown radio button ID %s.',
          otherID
        ) : invariant(otherInstance));
        // If this is a controlled radio button group, forcing the input that
        // was previously checked to update will cause it to be come re-checked
        // as appropriate.
        ReactUpdates.asap(forceUpdateIfMounted, otherInstance);
      }
    }

    return returnValue;
  }

});

module.exports = ReactDOMInput;

}).call(this,require('_process'))
},{"./AutoFocusMixin":108,"./DOMPropertyOperations":119,"./LinkedValueUtils":132,"./Object.assign":135,"./ReactBrowserComponentMixin":138,"./ReactCompositeComponent":146,"./ReactDOM":149,"./ReactElement":164,"./ReactMount":176,"./ReactUpdates":197,"./invariant":247,"_process":91}],156:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDOMOption
 */

"use strict";

var ReactBrowserComponentMixin = require("./ReactBrowserComponentMixin");
var ReactCompositeComponent = require("./ReactCompositeComponent");
var ReactElement = require("./ReactElement");
var ReactDOM = require("./ReactDOM");

var warning = require("./warning");

// Store a reference to the <option> `ReactDOMComponent`. TODO: use string
var option = ReactElement.createFactory(ReactDOM.option.type);

/**
 * Implements an <option> native component that warns when `selected` is set.
 */
var ReactDOMOption = ReactCompositeComponent.createClass({
  displayName: 'ReactDOMOption',

  mixins: [ReactBrowserComponentMixin],

  componentWillMount: function() {
    // TODO (yungsters): Remove support for `selected` in <option>.
    if ("production" !== process.env.NODE_ENV) {
      ("production" !== process.env.NODE_ENV ? warning(
        this.props.selected == null,
        'Use the `defaultValue` or `value` props on <select> instead of ' +
        'setting `selected` on <option>.'
      ) : null);
    }
  },

  render: function() {
    return option(this.props, this.props.children);
  }

});

module.exports = ReactDOMOption;

}).call(this,require('_process'))
},{"./ReactBrowserComponentMixin":138,"./ReactCompositeComponent":146,"./ReactDOM":149,"./ReactElement":164,"./warning":267,"_process":91}],157:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDOMSelect
 */

"use strict";

var AutoFocusMixin = require("./AutoFocusMixin");
var LinkedValueUtils = require("./LinkedValueUtils");
var ReactBrowserComponentMixin = require("./ReactBrowserComponentMixin");
var ReactCompositeComponent = require("./ReactCompositeComponent");
var ReactElement = require("./ReactElement");
var ReactDOM = require("./ReactDOM");
var ReactUpdates = require("./ReactUpdates");

var assign = require("./Object.assign");

// Store a reference to the <select> `ReactDOMComponent`. TODO: use string
var select = ReactElement.createFactory(ReactDOM.select.type);

function updateWithPendingValueIfMounted() {
  /*jshint validthis:true */
  if (this.isMounted()) {
    this.setState({value: this._pendingValue});
    this._pendingValue = 0;
  }
}

/**
 * Validation function for `value` and `defaultValue`.
 * @private
 */
function selectValueType(props, propName, componentName) {
  if (props[propName] == null) {
    return;
  }
  if (props.multiple) {
    if (!Array.isArray(props[propName])) {
      return new Error(
        ("The `" + propName + "` prop supplied to <select> must be an array if ") +
        ("`multiple` is true.")
      );
    }
  } else {
    if (Array.isArray(props[propName])) {
      return new Error(
        ("The `" + propName + "` prop supplied to <select> must be a scalar ") +
        ("value if `multiple` is false.")
      );
    }
  }
}

/**
 * If `value` is supplied, updates <option> elements on mount and update.
 * @param {ReactComponent} component Instance of ReactDOMSelect
 * @param {?*} propValue For uncontrolled components, null/undefined. For
 * controlled components, a string (or with `multiple`, a list of strings).
 * @private
 */
function updateOptions(component, propValue) {
  var multiple = component.props.multiple;
  var value = propValue != null ? propValue : component.state.value;
  var options = component.getDOMNode().options;
  var selectedValue, i, l;
  if (multiple) {
    selectedValue = {};
    for (i = 0, l = value.length; i < l; ++i) {
      selectedValue['' + value[i]] = true;
    }
  } else {
    selectedValue = '' + value;
  }
  for (i = 0, l = options.length; i < l; i++) {
    var selected = multiple ?
      selectedValue.hasOwnProperty(options[i].value) :
      options[i].value === selectedValue;

    if (selected !== options[i].selected) {
      options[i].selected = selected;
    }
  }
}

/**
 * Implements a <select> native component that allows optionally setting the
 * props `value` and `defaultValue`. If `multiple` is false, the prop must be a
 * string. If `multiple` is true, the prop must be an array of strings.
 *
 * If `value` is not supplied (or null/undefined), user actions that change the
 * selected option will trigger updates to the rendered options.
 *
 * If it is supplied (and not null/undefined), the rendered options will not
 * update in response to user actions. Instead, the `value` prop must change in
 * order for the rendered options to update.
 *
 * If `defaultValue` is provided, any options with the supplied values will be
 * selected.
 */
var ReactDOMSelect = ReactCompositeComponent.createClass({
  displayName: 'ReactDOMSelect',

  mixins: [AutoFocusMixin, LinkedValueUtils.Mixin, ReactBrowserComponentMixin],

  propTypes: {
    defaultValue: selectValueType,
    value: selectValueType
  },

  getInitialState: function() {
    return {value: this.props.defaultValue || (this.props.multiple ? [] : '')};
  },

  componentWillMount: function() {
    this._pendingValue = null;
  },

  componentWillReceiveProps: function(nextProps) {
    if (!this.props.multiple && nextProps.multiple) {
      this.setState({value: [this.state.value]});
    } else if (this.props.multiple && !nextProps.multiple) {
      this.setState({value: this.state.value[0]});
    }
  },

  render: function() {
    // Clone `this.props` so we don't mutate the input.
    var props = assign({}, this.props);

    props.onChange = this._handleChange;
    props.value = null;

    return select(props, this.props.children);
  },

  componentDidMount: function() {
    updateOptions(this, LinkedValueUtils.getValue(this));
  },

  componentDidUpdate: function(prevProps) {
    var value = LinkedValueUtils.getValue(this);
    var prevMultiple = !!prevProps.multiple;
    var multiple = !!this.props.multiple;
    if (value != null || prevMultiple !== multiple) {
      updateOptions(this, value);
    }
  },

  _handleChange: function(event) {
    var returnValue;
    var onChange = LinkedValueUtils.getOnChange(this);
    if (onChange) {
      returnValue = onChange.call(this, event);
    }

    var selectedValue;
    if (this.props.multiple) {
      selectedValue = [];
      var options = event.target.options;
      for (var i = 0, l = options.length; i < l; i++) {
        if (options[i].selected) {
          selectedValue.push(options[i].value);
        }
      }
    } else {
      selectedValue = event.target.value;
    }

    this._pendingValue = selectedValue;
    ReactUpdates.asap(updateWithPendingValueIfMounted, this);
    return returnValue;
  }

});

module.exports = ReactDOMSelect;

},{"./AutoFocusMixin":108,"./LinkedValueUtils":132,"./Object.assign":135,"./ReactBrowserComponentMixin":138,"./ReactCompositeComponent":146,"./ReactDOM":149,"./ReactElement":164,"./ReactUpdates":197}],158:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDOMSelection
 */

"use strict";

var ExecutionEnvironment = require("./ExecutionEnvironment");

var getNodeForCharacterOffset = require("./getNodeForCharacterOffset");
var getTextContentAccessor = require("./getTextContentAccessor");

/**
 * While `isCollapsed` is available on the Selection object and `collapsed`
 * is available on the Range object, IE11 sometimes gets them wrong.
 * If the anchor/focus nodes and offsets are the same, the range is collapsed.
 */
function isCollapsed(anchorNode, anchorOffset, focusNode, focusOffset) {
  return anchorNode === focusNode && anchorOffset === focusOffset;
}

/**
 * Get the appropriate anchor and focus node/offset pairs for IE.
 *
 * The catch here is that IE's selection API doesn't provide information
 * about whether the selection is forward or backward, so we have to
 * behave as though it's always forward.
 *
 * IE text differs from modern selection in that it behaves as though
 * block elements end with a new line. This means character offsets will
 * differ between the two APIs.
 *
 * @param {DOMElement} node
 * @return {object}
 */
function getIEOffsets(node) {
  var selection = document.selection;
  var selectedRange = selection.createRange();
  var selectedLength = selectedRange.text.length;

  // Duplicate selection so we can move range without breaking user selection.
  var fromStart = selectedRange.duplicate();
  fromStart.moveToElementText(node);
  fromStart.setEndPoint('EndToStart', selectedRange);

  var startOffset = fromStart.text.length;
  var endOffset = startOffset + selectedLength;

  return {
    start: startOffset,
    end: endOffset
  };
}

/**
 * @param {DOMElement} node
 * @return {?object}
 */
function getModernOffsets(node) {
  var selection = window.getSelection && window.getSelection();

  if (!selection || selection.rangeCount === 0) {
    return null;
  }

  var anchorNode = selection.anchorNode;
  var anchorOffset = selection.anchorOffset;
  var focusNode = selection.focusNode;
  var focusOffset = selection.focusOffset;

  var currentRange = selection.getRangeAt(0);

  // If the node and offset values are the same, the selection is collapsed.
  // `Selection.isCollapsed` is available natively, but IE sometimes gets
  // this value wrong.
  var isSelectionCollapsed = isCollapsed(
    selection.anchorNode,
    selection.anchorOffset,
    selection.focusNode,
    selection.focusOffset
  );

  var rangeLength = isSelectionCollapsed ? 0 : currentRange.toString().length;

  var tempRange = currentRange.cloneRange();
  tempRange.selectNodeContents(node);
  tempRange.setEnd(currentRange.startContainer, currentRange.startOffset);

  var isTempRangeCollapsed = isCollapsed(
    tempRange.startContainer,
    tempRange.startOffset,
    tempRange.endContainer,
    tempRange.endOffset
  );

  var start = isTempRangeCollapsed ? 0 : tempRange.toString().length;
  var end = start + rangeLength;

  // Detect whether the selection is backward.
  var detectionRange = document.createRange();
  detectionRange.setStart(anchorNode, anchorOffset);
  detectionRange.setEnd(focusNode, focusOffset);
  var isBackward = detectionRange.collapsed;

  return {
    start: isBackward ? end : start,
    end: isBackward ? start : end
  };
}

/**
 * @param {DOMElement|DOMTextNode} node
 * @param {object} offsets
 */
function setIEOffsets(node, offsets) {
  var range = document.selection.createRange().duplicate();
  var start, end;

  if (typeof offsets.end === 'undefined') {
    start = offsets.start;
    end = start;
  } else if (offsets.start > offsets.end) {
    start = offsets.end;
    end = offsets.start;
  } else {
    start = offsets.start;
    end = offsets.end;
  }

  range.moveToElementText(node);
  range.moveStart('character', start);
  range.setEndPoint('EndToStart', range);
  range.moveEnd('character', end - start);
  range.select();
}

/**
 * In modern non-IE browsers, we can support both forward and backward
 * selections.
 *
 * Note: IE10+ supports the Selection object, but it does not support
 * the `extend` method, which means that even in modern IE, it's not possible
 * to programatically create a backward selection. Thus, for all IE
 * versions, we use the old IE API to create our selections.
 *
 * @param {DOMElement|DOMTextNode} node
 * @param {object} offsets
 */
function setModernOffsets(node, offsets) {
  if (!window.getSelection) {
    return;
  }

  var selection = window.getSelection();
  var length = node[getTextContentAccessor()].length;
  var start = Math.min(offsets.start, length);
  var end = typeof offsets.end === 'undefined' ?
            start : Math.min(offsets.end, length);

  // IE 11 uses modern selection, but doesn't support the extend method.
  // Flip backward selections, so we can set with a single range.
  if (!selection.extend && start > end) {
    var temp = end;
    end = start;
    start = temp;
  }

  var startMarker = getNodeForCharacterOffset(node, start);
  var endMarker = getNodeForCharacterOffset(node, end);

  if (startMarker && endMarker) {
    var range = document.createRange();
    range.setStart(startMarker.node, startMarker.offset);
    selection.removeAllRanges();

    if (start > end) {
      selection.addRange(range);
      selection.extend(endMarker.node, endMarker.offset);
    } else {
      range.setEnd(endMarker.node, endMarker.offset);
      selection.addRange(range);
    }
  }
}

var useIEOffsets = ExecutionEnvironment.canUseDOM && document.selection;

var ReactDOMSelection = {
  /**
   * @param {DOMElement} node
   */
  getOffsets: useIEOffsets ? getIEOffsets : getModernOffsets,

  /**
   * @param {DOMElement|DOMTextNode} node
   * @param {object} offsets
   */
  setOffsets: useIEOffsets ? setIEOffsets : setModernOffsets
};

module.exports = ReactDOMSelection;

},{"./ExecutionEnvironment":129,"./getNodeForCharacterOffset":240,"./getTextContentAccessor":242}],159:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDOMTextarea
 */

"use strict";

var AutoFocusMixin = require("./AutoFocusMixin");
var DOMPropertyOperations = require("./DOMPropertyOperations");
var LinkedValueUtils = require("./LinkedValueUtils");
var ReactBrowserComponentMixin = require("./ReactBrowserComponentMixin");
var ReactCompositeComponent = require("./ReactCompositeComponent");
var ReactElement = require("./ReactElement");
var ReactDOM = require("./ReactDOM");
var ReactUpdates = require("./ReactUpdates");

var assign = require("./Object.assign");
var invariant = require("./invariant");

var warning = require("./warning");

// Store a reference to the <textarea> `ReactDOMComponent`. TODO: use string
var textarea = ReactElement.createFactory(ReactDOM.textarea.type);

function forceUpdateIfMounted() {
  /*jshint validthis:true */
  if (this.isMounted()) {
    this.forceUpdate();
  }
}

/**
 * Implements a <textarea> native component that allows setting `value`, and
 * `defaultValue`. This differs from the traditional DOM API because value is
 * usually set as PCDATA children.
 *
 * If `value` is not supplied (or null/undefined), user actions that affect the
 * value will trigger updates to the element.
 *
 * If `value` is supplied (and not null/undefined), the rendered element will
 * not trigger updates to the element. Instead, the `value` prop must change in
 * order for the rendered element to be updated.
 *
 * The rendered element will be initialized with an empty value, the prop
 * `defaultValue` if specified, or the children content (deprecated).
 */
var ReactDOMTextarea = ReactCompositeComponent.createClass({
  displayName: 'ReactDOMTextarea',

  mixins: [AutoFocusMixin, LinkedValueUtils.Mixin, ReactBrowserComponentMixin],

  getInitialState: function() {
    var defaultValue = this.props.defaultValue;
    // TODO (yungsters): Remove support for children content in <textarea>.
    var children = this.props.children;
    if (children != null) {
      if ("production" !== process.env.NODE_ENV) {
        ("production" !== process.env.NODE_ENV ? warning(
          false,
          'Use the `defaultValue` or `value` props instead of setting ' +
          'children on <textarea>.'
        ) : null);
      }
      ("production" !== process.env.NODE_ENV ? invariant(
        defaultValue == null,
        'If you supply `defaultValue` on a <textarea>, do not pass children.'
      ) : invariant(defaultValue == null));
      if (Array.isArray(children)) {
        ("production" !== process.env.NODE_ENV ? invariant(
          children.length <= 1,
          '<textarea> can only have at most one child.'
        ) : invariant(children.length <= 1));
        children = children[0];
      }

      defaultValue = '' + children;
    }
    if (defaultValue == null) {
      defaultValue = '';
    }
    var value = LinkedValueUtils.getValue(this);
    return {
      // We save the initial value so that `ReactDOMComponent` doesn't update
      // `textContent` (unnecessary since we update value).
      // The initial value can be a boolean or object so that's why it's
      // forced to be a string.
      initialValue: '' + (value != null ? value : defaultValue)
    };
  },

  render: function() {
    // Clone `this.props` so we don't mutate the input.
    var props = assign({}, this.props);

    ("production" !== process.env.NODE_ENV ? invariant(
      props.dangerouslySetInnerHTML == null,
      '`dangerouslySetInnerHTML` does not make sense on <textarea>.'
    ) : invariant(props.dangerouslySetInnerHTML == null));

    props.defaultValue = null;
    props.value = null;
    props.onChange = this._handleChange;

    // Always set children to the same thing. In IE9, the selection range will
    // get reset if `textContent` is mutated.
    return textarea(props, this.state.initialValue);
  },

  componentDidUpdate: function(prevProps, prevState, prevContext) {
    var value = LinkedValueUtils.getValue(this);
    if (value != null) {
      var rootNode = this.getDOMNode();
      // Cast `value` to a string to ensure the value is set correctly. While
      // browsers typically do this as necessary, jsdom doesn't.
      DOMPropertyOperations.setValueForProperty(rootNode, 'value', '' + value);
    }
  },

  _handleChange: function(event) {
    var returnValue;
    var onChange = LinkedValueUtils.getOnChange(this);
    if (onChange) {
      returnValue = onChange.call(this, event);
    }
    ReactUpdates.asap(forceUpdateIfMounted, this);
    return returnValue;
  }

});

module.exports = ReactDOMTextarea;

}).call(this,require('_process'))
},{"./AutoFocusMixin":108,"./DOMPropertyOperations":119,"./LinkedValueUtils":132,"./Object.assign":135,"./ReactBrowserComponentMixin":138,"./ReactCompositeComponent":146,"./ReactDOM":149,"./ReactElement":164,"./ReactUpdates":197,"./invariant":247,"./warning":267,"_process":91}],160:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDefaultBatchingStrategy
 */

"use strict";

var ReactUpdates = require("./ReactUpdates");
var Transaction = require("./Transaction");

var assign = require("./Object.assign");
var emptyFunction = require("./emptyFunction");

var RESET_BATCHED_UPDATES = {
  initialize: emptyFunction,
  close: function() {
    ReactDefaultBatchingStrategy.isBatchingUpdates = false;
  }
};

var FLUSH_BATCHED_UPDATES = {
  initialize: emptyFunction,
  close: ReactUpdates.flushBatchedUpdates.bind(ReactUpdates)
};

var TRANSACTION_WRAPPERS = [FLUSH_BATCHED_UPDATES, RESET_BATCHED_UPDATES];

function ReactDefaultBatchingStrategyTransaction() {
  this.reinitializeTransaction();
}

assign(
  ReactDefaultBatchingStrategyTransaction.prototype,
  Transaction.Mixin,
  {
    getTransactionWrappers: function() {
      return TRANSACTION_WRAPPERS;
    }
  }
);

var transaction = new ReactDefaultBatchingStrategyTransaction();

var ReactDefaultBatchingStrategy = {
  isBatchingUpdates: false,

  /**
   * Call the provided function in a context within which calls to `setState`
   * and friends are batched such that components aren't updated unnecessarily.
   */
  batchedUpdates: function(callback, a, b) {
    var alreadyBatchingUpdates = ReactDefaultBatchingStrategy.isBatchingUpdates;

    ReactDefaultBatchingStrategy.isBatchingUpdates = true;

    // The code is written this way to avoid extra allocations
    if (alreadyBatchingUpdates) {
      callback(a, b);
    } else {
      transaction.perform(callback, null, a, b);
    }
  }
};

module.exports = ReactDefaultBatchingStrategy;

},{"./Object.assign":135,"./ReactUpdates":197,"./Transaction":214,"./emptyFunction":228}],161:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDefaultInjection
 */

"use strict";

var BeforeInputEventPlugin = require("./BeforeInputEventPlugin");
var ChangeEventPlugin = require("./ChangeEventPlugin");
var ClientReactRootIndex = require("./ClientReactRootIndex");
var CompositionEventPlugin = require("./CompositionEventPlugin");
var DefaultEventPluginOrder = require("./DefaultEventPluginOrder");
var EnterLeaveEventPlugin = require("./EnterLeaveEventPlugin");
var ExecutionEnvironment = require("./ExecutionEnvironment");
var HTMLDOMPropertyConfig = require("./HTMLDOMPropertyConfig");
var MobileSafariClickEventPlugin = require("./MobileSafariClickEventPlugin");
var ReactBrowserComponentMixin = require("./ReactBrowserComponentMixin");
var ReactComponentBrowserEnvironment =
  require("./ReactComponentBrowserEnvironment");
var ReactDefaultBatchingStrategy = require("./ReactDefaultBatchingStrategy");
var ReactDOMComponent = require("./ReactDOMComponent");
var ReactDOMButton = require("./ReactDOMButton");
var ReactDOMForm = require("./ReactDOMForm");
var ReactDOMImg = require("./ReactDOMImg");
var ReactDOMInput = require("./ReactDOMInput");
var ReactDOMOption = require("./ReactDOMOption");
var ReactDOMSelect = require("./ReactDOMSelect");
var ReactDOMTextarea = require("./ReactDOMTextarea");
var ReactEventListener = require("./ReactEventListener");
var ReactInjection = require("./ReactInjection");
var ReactInstanceHandles = require("./ReactInstanceHandles");
var ReactMount = require("./ReactMount");
var SelectEventPlugin = require("./SelectEventPlugin");
var ServerReactRootIndex = require("./ServerReactRootIndex");
var SimpleEventPlugin = require("./SimpleEventPlugin");
var SVGDOMPropertyConfig = require("./SVGDOMPropertyConfig");

var createFullPageComponent = require("./createFullPageComponent");

function inject() {
  ReactInjection.EventEmitter.injectReactEventListener(
    ReactEventListener
  );

  /**
   * Inject modules for resolving DOM hierarchy and plugin ordering.
   */
  ReactInjection.EventPluginHub.injectEventPluginOrder(DefaultEventPluginOrder);
  ReactInjection.EventPluginHub.injectInstanceHandle(ReactInstanceHandles);
  ReactInjection.EventPluginHub.injectMount(ReactMount);

  /**
   * Some important event plugins included by default (without having to require
   * them).
   */
  ReactInjection.EventPluginHub.injectEventPluginsByName({
    SimpleEventPlugin: SimpleEventPlugin,
    EnterLeaveEventPlugin: EnterLeaveEventPlugin,
    ChangeEventPlugin: ChangeEventPlugin,
    CompositionEventPlugin: CompositionEventPlugin,
    MobileSafariClickEventPlugin: MobileSafariClickEventPlugin,
    SelectEventPlugin: SelectEventPlugin,
    BeforeInputEventPlugin: BeforeInputEventPlugin
  });

  ReactInjection.NativeComponent.injectGenericComponentClass(
    ReactDOMComponent
  );

  ReactInjection.NativeComponent.injectComponentClasses({
    'button': ReactDOMButton,
    'form': ReactDOMForm,
    'img': ReactDOMImg,
    'input': ReactDOMInput,
    'option': ReactDOMOption,
    'select': ReactDOMSelect,
    'textarea': ReactDOMTextarea,

    'html': createFullPageComponent('html'),
    'head': createFullPageComponent('head'),
    'body': createFullPageComponent('body')
  });

  // This needs to happen after createFullPageComponent() otherwise the mixin
  // gets double injected.
  ReactInjection.CompositeComponent.injectMixin(ReactBrowserComponentMixin);

  ReactInjection.DOMProperty.injectDOMPropertyConfig(HTMLDOMPropertyConfig);
  ReactInjection.DOMProperty.injectDOMPropertyConfig(SVGDOMPropertyConfig);

  ReactInjection.EmptyComponent.injectEmptyComponent('noscript');

  ReactInjection.Updates.injectReconcileTransaction(
    ReactComponentBrowserEnvironment.ReactReconcileTransaction
  );
  ReactInjection.Updates.injectBatchingStrategy(
    ReactDefaultBatchingStrategy
  );

  ReactInjection.RootIndex.injectCreateReactRootIndex(
    ExecutionEnvironment.canUseDOM ?
      ClientReactRootIndex.createReactRootIndex :
      ServerReactRootIndex.createReactRootIndex
  );

  ReactInjection.Component.injectEnvironment(ReactComponentBrowserEnvironment);

  if ("production" !== process.env.NODE_ENV) {
    var url = (ExecutionEnvironment.canUseDOM && window.location.href) || '';
    if ((/[?&]react_perf\b/).test(url)) {
      var ReactDefaultPerf = require("./ReactDefaultPerf");
      ReactDefaultPerf.start();
    }
  }
}

module.exports = {
  inject: inject
};

}).call(this,require('_process'))
},{"./BeforeInputEventPlugin":109,"./ChangeEventPlugin":114,"./ClientReactRootIndex":115,"./CompositionEventPlugin":116,"./DefaultEventPluginOrder":121,"./EnterLeaveEventPlugin":122,"./ExecutionEnvironment":129,"./HTMLDOMPropertyConfig":130,"./MobileSafariClickEventPlugin":134,"./ReactBrowserComponentMixin":138,"./ReactComponentBrowserEnvironment":144,"./ReactDOMButton":150,"./ReactDOMComponent":151,"./ReactDOMForm":152,"./ReactDOMImg":154,"./ReactDOMInput":155,"./ReactDOMOption":156,"./ReactDOMSelect":157,"./ReactDOMTextarea":159,"./ReactDefaultBatchingStrategy":160,"./ReactDefaultPerf":162,"./ReactEventListener":169,"./ReactInjection":170,"./ReactInstanceHandles":172,"./ReactMount":176,"./SVGDOMPropertyConfig":199,"./SelectEventPlugin":200,"./ServerReactRootIndex":201,"./SimpleEventPlugin":202,"./createFullPageComponent":223,"_process":91}],162:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDefaultPerf
 * @typechecks static-only
 */

"use strict";

var DOMProperty = require("./DOMProperty");
var ReactDefaultPerfAnalysis = require("./ReactDefaultPerfAnalysis");
var ReactMount = require("./ReactMount");
var ReactPerf = require("./ReactPerf");

var performanceNow = require("./performanceNow");

function roundFloat(val) {
  return Math.floor(val * 100) / 100;
}

function addValue(obj, key, val) {
  obj[key] = (obj[key] || 0) + val;
}

var ReactDefaultPerf = {
  _allMeasurements: [], // last item in the list is the current one
  _mountStack: [0],
  _injected: false,

  start: function() {
    if (!ReactDefaultPerf._injected) {
      ReactPerf.injection.injectMeasure(ReactDefaultPerf.measure);
    }

    ReactDefaultPerf._allMeasurements.length = 0;
    ReactPerf.enableMeasure = true;
  },

  stop: function() {
    ReactPerf.enableMeasure = false;
  },

  getLastMeasurements: function() {
    return ReactDefaultPerf._allMeasurements;
  },

  printExclusive: function(measurements) {
    measurements = measurements || ReactDefaultPerf._allMeasurements;
    var summary = ReactDefaultPerfAnalysis.getExclusiveSummary(measurements);
    console.table(summary.map(function(item) {
      return {
        'Component class name': item.componentName,
        'Total inclusive time (ms)': roundFloat(item.inclusive),
        'Exclusive mount time (ms)': roundFloat(item.exclusive),
        'Exclusive render time (ms)': roundFloat(item.render),
        'Mount time per instance (ms)': roundFloat(item.exclusive / item.count),
        'Render time per instance (ms)': roundFloat(item.render / item.count),
        'Instances': item.count
      };
    }));
    // TODO: ReactDefaultPerfAnalysis.getTotalTime() does not return the correct
    // number.
  },

  printInclusive: function(measurements) {
    measurements = measurements || ReactDefaultPerf._allMeasurements;
    var summary = ReactDefaultPerfAnalysis.getInclusiveSummary(measurements);
    console.table(summary.map(function(item) {
      return {
        'Owner > component': item.componentName,
        'Inclusive time (ms)': roundFloat(item.time),
        'Instances': item.count
      };
    }));
    console.log(
      'Total time:',
      ReactDefaultPerfAnalysis.getTotalTime(measurements).toFixed(2) + ' ms'
    );
  },

  getMeasurementsSummaryMap: function(measurements) {
    var summary = ReactDefaultPerfAnalysis.getInclusiveSummary(
      measurements,
      true
    );
    return summary.map(function(item) {
      return {
        'Owner > component': item.componentName,
        'Wasted time (ms)': item.time,
        'Instances': item.count
      };
    });
  },

  printWasted: function(measurements) {
    measurements = measurements || ReactDefaultPerf._allMeasurements;
    console.table(ReactDefaultPerf.getMeasurementsSummaryMap(measurements));
    console.log(
      'Total time:',
      ReactDefaultPerfAnalysis.getTotalTime(measurements).toFixed(2) + ' ms'
    );
  },

  printDOM: function(measurements) {
    measurements = measurements || ReactDefaultPerf._allMeasurements;
    var summary = ReactDefaultPerfAnalysis.getDOMSummary(measurements);
    console.table(summary.map(function(item) {
      var result = {};
      result[DOMProperty.ID_ATTRIBUTE_NAME] = item.id;
      result['type'] = item.type;
      result['args'] = JSON.stringify(item.args);
      return result;
    }));
    console.log(
      'Total time:',
      ReactDefaultPerfAnalysis.getTotalTime(measurements).toFixed(2) + ' ms'
    );
  },

  _recordWrite: function(id, fnName, totalTime, args) {
    // TODO: totalTime isn't that useful since it doesn't count paints/reflows
    var writes =
      ReactDefaultPerf
        ._allMeasurements[ReactDefaultPerf._allMeasurements.length - 1]
        .writes;
    writes[id] = writes[id] || [];
    writes[id].push({
      type: fnName,
      time: totalTime,
      args: args
    });
  },

  measure: function(moduleName, fnName, func) {
    return function() {for (var args=[],$__0=0,$__1=arguments.length;$__0<$__1;$__0++) args.push(arguments[$__0]);
      var totalTime;
      var rv;
      var start;

      if (fnName === '_renderNewRootComponent' ||
          fnName === 'flushBatchedUpdates') {
        // A "measurement" is a set of metrics recorded for each flush. We want
        // to group the metrics for a given flush together so we can look at the
        // components that rendered and the DOM operations that actually
        // happened to determine the amount of "wasted work" performed.
        ReactDefaultPerf._allMeasurements.push({
          exclusive: {},
          inclusive: {},
          render: {},
          counts: {},
          writes: {},
          displayNames: {},
          totalTime: 0
        });
        start = performanceNow();
        rv = func.apply(this, args);
        ReactDefaultPerf._allMeasurements[
          ReactDefaultPerf._allMeasurements.length - 1
        ].totalTime = performanceNow() - start;
        return rv;
      } else if (moduleName === 'ReactDOMIDOperations' ||
        moduleName === 'ReactComponentBrowserEnvironment') {
        start = performanceNow();
        rv = func.apply(this, args);
        totalTime = performanceNow() - start;

        if (fnName === 'mountImageIntoNode') {
          var mountID = ReactMount.getID(args[1]);
          ReactDefaultPerf._recordWrite(mountID, fnName, totalTime, args[0]);
        } else if (fnName === 'dangerouslyProcessChildrenUpdates') {
          // special format
          args[0].forEach(function(update) {
            var writeArgs = {};
            if (update.fromIndex !== null) {
              writeArgs.fromIndex = update.fromIndex;
            }
            if (update.toIndex !== null) {
              writeArgs.toIndex = update.toIndex;
            }
            if (update.textContent !== null) {
              writeArgs.textContent = update.textContent;
            }
            if (update.markupIndex !== null) {
              writeArgs.markup = args[1][update.markupIndex];
            }
            ReactDefaultPerf._recordWrite(
              update.parentID,
              update.type,
              totalTime,
              writeArgs
            );
          });
        } else {
          // basic format
          ReactDefaultPerf._recordWrite(
            args[0],
            fnName,
            totalTime,
            Array.prototype.slice.call(args, 1)
          );
        }
        return rv;
      } else if (moduleName === 'ReactCompositeComponent' && (
        fnName === 'mountComponent' ||
        fnName === 'updateComponent' || // TODO: receiveComponent()?
        fnName === '_renderValidatedComponent')) {

        var rootNodeID = fnName === 'mountComponent' ?
          args[0] :
          this._rootNodeID;
        var isRender = fnName === '_renderValidatedComponent';
        var isMount = fnName === 'mountComponent';

        var mountStack = ReactDefaultPerf._mountStack;
        var entry = ReactDefaultPerf._allMeasurements[
          ReactDefaultPerf._allMeasurements.length - 1
        ];

        if (isRender) {
          addValue(entry.counts, rootNodeID, 1);
        } else if (isMount) {
          mountStack.push(0);
        }

        start = performanceNow();
        rv = func.apply(this, args);
        totalTime = performanceNow() - start;

        if (isRender) {
          addValue(entry.render, rootNodeID, totalTime);
        } else if (isMount) {
          var subMountTime = mountStack.pop();
          mountStack[mountStack.length - 1] += totalTime;
          addValue(entry.exclusive, rootNodeID, totalTime - subMountTime);
          addValue(entry.inclusive, rootNodeID, totalTime);
        } else {
          addValue(entry.inclusive, rootNodeID, totalTime);
        }

        entry.displayNames[rootNodeID] = {
          current: this.constructor.displayName,
          owner: this._owner ? this._owner.constructor.displayName : '<root>'
        };

        return rv;
      } else {
        return func.apply(this, args);
      }
    };
  }
};

module.exports = ReactDefaultPerf;

},{"./DOMProperty":118,"./ReactDefaultPerfAnalysis":163,"./ReactMount":176,"./ReactPerf":181,"./performanceNow":260}],163:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactDefaultPerfAnalysis
 */

var assign = require("./Object.assign");

// Don't try to save users less than 1.2ms (a number I made up)
var DONT_CARE_THRESHOLD = 1.2;
var DOM_OPERATION_TYPES = {
  'mountImageIntoNode': 'set innerHTML',
  INSERT_MARKUP: 'set innerHTML',
  MOVE_EXISTING: 'move',
  REMOVE_NODE: 'remove',
  TEXT_CONTENT: 'set textContent',
  'updatePropertyByID': 'update attribute',
  'deletePropertyByID': 'delete attribute',
  'updateStylesByID': 'update styles',
  'updateInnerHTMLByID': 'set innerHTML',
  'dangerouslyReplaceNodeWithMarkupByID': 'replace'
};

function getTotalTime(measurements) {
  // TODO: return number of DOM ops? could be misleading.
  // TODO: measure dropped frames after reconcile?
  // TODO: log total time of each reconcile and the top-level component
  // class that triggered it.
  var totalTime = 0;
  for (var i = 0; i < measurements.length; i++) {
    var measurement = measurements[i];
    totalTime += measurement.totalTime;
  }
  return totalTime;
}

function getDOMSummary(measurements) {
  var items = [];
  for (var i = 0; i < measurements.length; i++) {
    var measurement = measurements[i];
    var id;

    for (id in measurement.writes) {
      measurement.writes[id].forEach(function(write) {
        items.push({
          id: id,
          type: DOM_OPERATION_TYPES[write.type] || write.type,
          args: write.args
        });
      });
    }
  }
  return items;
}

function getExclusiveSummary(measurements) {
  var candidates = {};
  var displayName;

  for (var i = 0; i < measurements.length; i++) {
    var measurement = measurements[i];
    var allIDs = assign(
      {},
      measurement.exclusive,
      measurement.inclusive
    );

    for (var id in allIDs) {
      displayName = measurement.displayNames[id].current;

      candidates[displayName] = candidates[displayName] || {
        componentName: displayName,
        inclusive: 0,
        exclusive: 0,
        render: 0,
        count: 0
      };
      if (measurement.render[id]) {
        candidates[displayName].render += measurement.render[id];
      }
      if (measurement.exclusive[id]) {
        candidates[displayName].exclusive += measurement.exclusive[id];
      }
      if (measurement.inclusive[id]) {
        candidates[displayName].inclusive += measurement.inclusive[id];
      }
      if (measurement.counts[id]) {
        candidates[displayName].count += measurement.counts[id];
      }
    }
  }

  // Now make a sorted array with the results.
  var arr = [];
  for (displayName in candidates) {
    if (candidates[displayName].exclusive >= DONT_CARE_THRESHOLD) {
      arr.push(candidates[displayName]);
    }
  }

  arr.sort(function(a, b) {
    return b.exclusive - a.exclusive;
  });

  return arr;
}

function getInclusiveSummary(measurements, onlyClean) {
  var candidates = {};
  var inclusiveKey;

  for (var i = 0; i < measurements.length; i++) {
    var measurement = measurements[i];
    var allIDs = assign(
      {},
      measurement.exclusive,
      measurement.inclusive
    );
    var cleanComponents;

    if (onlyClean) {
      cleanComponents = getUnchangedComponents(measurement);
    }

    for (var id in allIDs) {
      if (onlyClean && !cleanComponents[id]) {
        continue;
      }

      var displayName = measurement.displayNames[id];

      // Inclusive time is not useful for many components without knowing where
      // they are instantiated. So we aggregate inclusive time with both the
      // owner and current displayName as the key.
      inclusiveKey = displayName.owner + ' > ' + displayName.current;

      candidates[inclusiveKey] = candidates[inclusiveKey] || {
        componentName: inclusiveKey,
        time: 0,
        count: 0
      };

      if (measurement.inclusive[id]) {
        candidates[inclusiveKey].time += measurement.inclusive[id];
      }
      if (measurement.counts[id]) {
        candidates[inclusiveKey].count += measurement.counts[id];
      }
    }
  }

  // Now make a sorted array with the results.
  var arr = [];
  for (inclusiveKey in candidates) {
    if (candidates[inclusiveKey].time >= DONT_CARE_THRESHOLD) {
      arr.push(candidates[inclusiveKey]);
    }
  }

  arr.sort(function(a, b) {
    return b.time - a.time;
  });

  return arr;
}

function getUnchangedComponents(measurement) {
  // For a given reconcile, look at which components did not actually
  // render anything to the DOM and return a mapping of their ID to
  // the amount of time it took to render the entire subtree.
  var cleanComponents = {};
  var dirtyLeafIDs = Object.keys(measurement.writes);
  var allIDs = assign({}, measurement.exclusive, measurement.inclusive);

  for (var id in allIDs) {
    var isDirty = false;
    // For each component that rendered, see if a component that triggered
    // a DOM op is in its subtree.
    for (var i = 0; i < dirtyLeafIDs.length; i++) {
      if (dirtyLeafIDs[i].indexOf(id) === 0) {
        isDirty = true;
        break;
      }
    }
    if (!isDirty && measurement.counts[id] > 0) {
      cleanComponents[id] = true;
    }
  }
  return cleanComponents;
}

var ReactDefaultPerfAnalysis = {
  getExclusiveSummary: getExclusiveSummary,
  getInclusiveSummary: getInclusiveSummary,
  getDOMSummary: getDOMSummary,
  getTotalTime: getTotalTime
};

module.exports = ReactDefaultPerfAnalysis;

},{"./Object.assign":135}],164:[function(require,module,exports){
(function (process){
/**
 * Copyright 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactElement
 */

"use strict";

var ReactContext = require("./ReactContext");
var ReactCurrentOwner = require("./ReactCurrentOwner");

var warning = require("./warning");

var RESERVED_PROPS = {
  key: true,
  ref: true
};

/**
 * Warn for mutations.
 *
 * @internal
 * @param {object} object
 * @param {string} key
 */
function defineWarningProperty(object, key) {
  Object.defineProperty(object, key, {

    configurable: false,
    enumerable: true,

    get: function() {
      if (!this._store) {
        return null;
      }
      return this._store[key];
    },

    set: function(value) {
      ("production" !== process.env.NODE_ENV ? warning(
        false,
        'Don\'t set the ' + key + ' property of the component. ' +
        'Mutate the existing props object instead.'
      ) : null);
      this._store[key] = value;
    }

  });
}

/**
 * This is updated to true if the membrane is successfully created.
 */
var useMutationMembrane = false;

/**
 * Warn for mutations.
 *
 * @internal
 * @param {object} element
 */
function defineMutationMembrane(prototype) {
  try {
    var pseudoFrozenProperties = {
      props: true
    };
    for (var key in pseudoFrozenProperties) {
      defineWarningProperty(prototype, key);
    }
    useMutationMembrane = true;
  } catch (x) {
    // IE will fail on defineProperty
  }
}

/**
 * Base constructor for all React elements. This is only used to make this
 * work with a dynamic instanceof check. Nothing should live on this prototype.
 *
 * @param {*} type
 * @param {string|object} ref
 * @param {*} key
 * @param {*} props
 * @internal
 */
var ReactElement = function(type, key, ref, owner, context, props) {
  // Built-in properties that belong on the element
  this.type = type;
  this.key = key;
  this.ref = ref;

  // Record the component responsible for creating this element.
  this._owner = owner;

  // TODO: Deprecate withContext, and then the context becomes accessible
  // through the owner.
  this._context = context;

  if ("production" !== process.env.NODE_ENV) {
    // The validation flag and props are currently mutative. We put them on
    // an external backing store so that we can freeze the whole object.
    // This can be replaced with a WeakMap once they are implemented in
    // commonly used development environments.
    this._store = { validated: false, props: props };

    // We're not allowed to set props directly on the object so we early
    // return and rely on the prototype membrane to forward to the backing
    // store.
    if (useMutationMembrane) {
      Object.freeze(this);
      return;
    }
  }

  this.props = props;
};

// We intentionally don't expose the function on the constructor property.
// ReactElement should be indistinguishable from a plain object.
ReactElement.prototype = {
  _isReactElement: true
};

if ("production" !== process.env.NODE_ENV) {
  defineMutationMembrane(ReactElement.prototype);
}

ReactElement.createElement = function(type, config, children) {
  var propName;

  // Reserved names are extracted
  var props = {};

  var key = null;
  var ref = null;

  if (config != null) {
    ref = config.ref === undefined ? null : config.ref;
    if ("production" !== process.env.NODE_ENV) {
      ("production" !== process.env.NODE_ENV ? warning(
        config.key !== null,
        'createElement(...): Encountered component with a `key` of null. In ' +
        'a future version, this will be treated as equivalent to the string ' +
        '\'null\'; instead, provide an explicit key or use undefined.'
      ) : null);
    }
    // TODO: Change this back to `config.key === undefined`
    key = config.key == null ? null : '' + config.key;
    // Remaining properties are added to a new props object
    for (propName in config) {
      if (config.hasOwnProperty(propName) &&
          !RESERVED_PROPS.hasOwnProperty(propName)) {
        props[propName] = config[propName];
      }
    }
  }

  // Children can be more than one argument, and those are transferred onto
  // the newly allocated props object.
  var childrenLength = arguments.length - 2;
  if (childrenLength === 1) {
    props.children = children;
  } else if (childrenLength > 1) {
    var childArray = Array(childrenLength);
    for (var i = 0; i < childrenLength; i++) {
      childArray[i] = arguments[i + 2];
    }
    props.children = childArray;
  }

  // Resolve default props
  if (type && type.defaultProps) {
    var defaultProps = type.defaultProps;
    for (propName in defaultProps) {
      if (typeof props[propName] === 'undefined') {
        props[propName] = defaultProps[propName];
      }
    }
  }

  return new ReactElement(
    type,
    key,
    ref,
    ReactCurrentOwner.current,
    ReactContext.current,
    props
  );
};

ReactElement.createFactory = function(type) {
  var factory = ReactElement.createElement.bind(null, type);
  // Expose the type on the factory and the prototype so that it can be
  // easily accessed on elements. E.g. <Foo />.type === Foo.type.
  // This should not be named `constructor` since this may not be the function
  // that created the element, and it may not even be a constructor.
  factory.type = type;
  return factory;
};

ReactElement.cloneAndReplaceProps = function(oldElement, newProps) {
  var newElement = new ReactElement(
    oldElement.type,
    oldElement.key,
    oldElement.ref,
    oldElement._owner,
    oldElement._context,
    newProps
  );

  if ("production" !== process.env.NODE_ENV) {
    // If the key on the original is valid, then the clone is valid
    newElement._store.validated = oldElement._store.validated;
  }
  return newElement;
};

/**
 * @param {?object} object
 * @return {boolean} True if `object` is a valid component.
 * @final
 */
ReactElement.isValidElement = function(object) {
  // ReactTestUtils is often used outside of beforeEach where as React is
  // within it. This leads to two different instances of React on the same
  // page. To identify a element from a different React instance we use
  // a flag instead of an instanceof check.
  var isElement = !!(object && object._isReactElement);
  // if (isElement && !(object instanceof ReactElement)) {
  // This is an indicator that you're using multiple versions of React at the
  // same time. This will screw with ownership and stuff. Fix it, please.
  // TODO: We could possibly warn here.
  // }
  return isElement;
};

module.exports = ReactElement;

}).call(this,require('_process'))
},{"./ReactContext":147,"./ReactCurrentOwner":148,"./warning":267,"_process":91}],165:[function(require,module,exports){
(function (process){
/**
 * Copyright 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactElementValidator
 */

/**
 * ReactElementValidator provides a wrapper around a element factory
 * which validates the props passed to the element. This is intended to be
 * used only in DEV and could be replaced by a static type checker for languages
 * that support it.
 */

"use strict";

var ReactElement = require("./ReactElement");
var ReactPropTypeLocations = require("./ReactPropTypeLocations");
var ReactCurrentOwner = require("./ReactCurrentOwner");

var monitorCodeUse = require("./monitorCodeUse");
var warning = require("./warning");

/**
 * Warn if there's no key explicitly set on dynamic arrays of children or
 * object keys are not valid. This allows us to keep track of children between
 * updates.
 */
var ownerHasKeyUseWarning = {
  'react_key_warning': {},
  'react_numeric_key_warning': {}
};
var ownerHasMonitoredObjectMap = {};

var loggedTypeFailures = {};

var NUMERIC_PROPERTY_REGEX = /^\d+$/;

/**
 * Gets the current owner's displayName for use in warnings.
 *
 * @internal
 * @return {?string} Display name or undefined
 */
function getCurrentOwnerDisplayName() {
  var current = ReactCurrentOwner.current;
  return current && current.constructor.displayName || undefined;
}

/**
 * Warn if the component doesn't have an explicit key assigned to it.
 * This component is in an array. The array could grow and shrink or be
 * reordered. All children that haven't already been validated are required to
 * have a "key" property assigned to it.
 *
 * @internal
 * @param {ReactComponent} component Component that requires a key.
 * @param {*} parentType component's parent's type.
 */
function validateExplicitKey(component, parentType) {
  if (component._store.validated || component.key != null) {
    return;
  }
  component._store.validated = true;

  warnAndMonitorForKeyUse(
    'react_key_warning',
    'Each child in an array should have a unique "key" prop.',
    component,
    parentType
  );
}

/**
 * Warn if the key is being defined as an object property but has an incorrect
 * value.
 *
 * @internal
 * @param {string} name Property name of the key.
 * @param {ReactComponent} component Component that requires a key.
 * @param {*} parentType component's parent's type.
 */
function validatePropertyKey(name, component, parentType) {
  if (!NUMERIC_PROPERTY_REGEX.test(name)) {
    return;
  }
  warnAndMonitorForKeyUse(
    'react_numeric_key_warning',
    'Child objects should have non-numeric keys so ordering is preserved.',
    component,
    parentType
  );
}

/**
 * Shared warning and monitoring code for the key warnings.
 *
 * @internal
 * @param {string} warningID The id used when logging.
 * @param {string} message The base warning that gets output.
 * @param {ReactComponent} component Component that requires a key.
 * @param {*} parentType component's parent's type.
 */
function warnAndMonitorForKeyUse(warningID, message, component, parentType) {
  var ownerName = getCurrentOwnerDisplayName();
  var parentName = parentType.displayName;

  var useName = ownerName || parentName;
  var memoizer = ownerHasKeyUseWarning[warningID];
  if (memoizer.hasOwnProperty(useName)) {
    return;
  }
  memoizer[useName] = true;

  message += ownerName ?
    (" Check the render method of " + ownerName + ".") :
    (" Check the renderComponent call using <" + parentName + ">.");

  // Usually the current owner is the offender, but if it accepts children as a
  // property, it may be the creator of the child that's responsible for
  // assigning it a key.
  var childOwnerName = null;
  if (component._owner && component._owner !== ReactCurrentOwner.current) {
    // Name of the component that originally created this child.
    childOwnerName = component._owner.constructor.displayName;

    message += (" It was passed a child from " + childOwnerName + ".");
  }

  message += ' See http://fb.me/react-warning-keys for more information.';
  monitorCodeUse(warningID, {
    component: useName,
    componentOwner: childOwnerName
  });
  console.warn(message);
}

/**
 * Log that we're using an object map. We're considering deprecating this
 * feature and replace it with proper Map and ImmutableMap data structures.
 *
 * @internal
 */
function monitorUseOfObjectMap() {
  var currentName = getCurrentOwnerDisplayName() || '';
  if (ownerHasMonitoredObjectMap.hasOwnProperty(currentName)) {
    return;
  }
  ownerHasMonitoredObjectMap[currentName] = true;
  monitorCodeUse('react_object_map_children');
}

/**
 * Ensure that every component either is passed in a static location, in an
 * array with an explicit keys property defined, or in an object literal
 * with valid key property.
 *
 * @internal
 * @param {*} component Statically passed child of any type.
 * @param {*} parentType component's parent's type.
 * @return {boolean}
 */
function validateChildKeys(component, parentType) {
  if (Array.isArray(component)) {
    for (var i = 0; i < component.length; i++) {
      var child = component[i];
      if (ReactElement.isValidElement(child)) {
        validateExplicitKey(child, parentType);
      }
    }
  } else if (ReactElement.isValidElement(component)) {
    // This component was passed in a valid location.
    component._store.validated = true;
  } else if (component && typeof component === 'object') {
    monitorUseOfObjectMap();
    for (var name in component) {
      validatePropertyKey(name, component[name], parentType);
    }
  }
}

/**
 * Assert that the props are valid
 *
 * @param {string} componentName Name of the component for error messages.
 * @param {object} propTypes Map of prop name to a ReactPropType
 * @param {object} props
 * @param {string} location e.g. "prop", "context", "child context"
 * @private
 */
function checkPropTypes(componentName, propTypes, props, location) {
  for (var propName in propTypes) {
    if (propTypes.hasOwnProperty(propName)) {
      var error;
      // Prop type validation may throw. In case they do, we don't want to
      // fail the render phase where it didn't fail before. So we log it.
      // After these have been cleaned up, we'll let them throw.
      try {
        error = propTypes[propName](props, propName, componentName, location);
      } catch (ex) {
        error = ex;
      }
      if (error instanceof Error && !(error.message in loggedTypeFailures)) {
        // Only monitor this failure once because there tends to be a lot of the
        // same error.
        loggedTypeFailures[error.message] = true;
        // This will soon use the warning module
        monitorCodeUse(
          'react_failed_descriptor_type_check',
          { message: error.message }
        );
      }
    }
  }
}

var ReactElementValidator = {

  createElement: function(type, props, children) {
    // We warn in this case but don't throw. We expect the element creation to
    // succeed and there will likely be errors in render.
    ("production" !== process.env.NODE_ENV ? warning(
      type != null,
      'React.createElement: type should not be null or undefined. It should ' +
        'be a string (for DOM elements) or a ReactClass (for composite ' +
        'components).'
    ) : null);

    var element = ReactElement.createElement.apply(this, arguments);

    // The result can be nullish if a mock or a custom function is used.
    // TODO: Drop this when these are no longer allowed as the type argument.
    if (element == null) {
      return element;
    }

    for (var i = 2; i < arguments.length; i++) {
      validateChildKeys(arguments[i], type);
    }

    if (type) {
      var name = type.displayName;
      if (type.propTypes) {
        checkPropTypes(
          name,
          type.propTypes,
          element.props,
          ReactPropTypeLocations.prop
        );
      }
      if (type.contextTypes) {
        checkPropTypes(
          name,
          type.contextTypes,
          element._context,
          ReactPropTypeLocations.context
        );
      }
    }
    return element;
  },

  createFactory: function(type) {
    var validatedFactory = ReactElementValidator.createElement.bind(
      null,
      type
    );
    validatedFactory.type = type;
    return validatedFactory;
  }

};

module.exports = ReactElementValidator;

}).call(this,require('_process'))
},{"./ReactCurrentOwner":148,"./ReactElement":164,"./ReactPropTypeLocations":184,"./monitorCodeUse":257,"./warning":267,"_process":91}],166:[function(require,module,exports){
(function (process){
/**
 * Copyright 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactEmptyComponent
 */

"use strict";

var ReactElement = require("./ReactElement");

var invariant = require("./invariant");

var component;
// This registry keeps track of the React IDs of the components that rendered to
// `null` (in reality a placeholder such as `noscript`)
var nullComponentIdsRegistry = {};

var ReactEmptyComponentInjection = {
  injectEmptyComponent: function(emptyComponent) {
    component = ReactElement.createFactory(emptyComponent);
  }
};

/**
 * @return {ReactComponent} component The injected empty component.
 */
function getEmptyComponent() {
  ("production" !== process.env.NODE_ENV ? invariant(
    component,
    'Trying to return null from a render, but no null placeholder component ' +
    'was injected.'
  ) : invariant(component));
  return component();
}

/**
 * Mark the component as having rendered to null.
 * @param {string} id Component's `_rootNodeID`.
 */
function registerNullComponentID(id) {
  nullComponentIdsRegistry[id] = true;
}

/**
 * Unmark the component as having rendered to null: it renders to something now.
 * @param {string} id Component's `_rootNodeID`.
 */
function deregisterNullComponentID(id) {
  delete nullComponentIdsRegistry[id];
}

/**
 * @param {string} id Component's `_rootNodeID`.
 * @return {boolean} True if the component is rendered to null.
 */
function isNullComponentID(id) {
  return nullComponentIdsRegistry[id];
}

var ReactEmptyComponent = {
  deregisterNullComponentID: deregisterNullComponentID,
  getEmptyComponent: getEmptyComponent,
  injection: ReactEmptyComponentInjection,
  isNullComponentID: isNullComponentID,
  registerNullComponentID: registerNullComponentID
};

module.exports = ReactEmptyComponent;

}).call(this,require('_process'))
},{"./ReactElement":164,"./invariant":247,"_process":91}],167:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactErrorUtils
 * @typechecks
 */

"use strict";

var ReactErrorUtils = {
  /**
   * Creates a guarded version of a function. This is supposed to make debugging
   * of event handlers easier. To aid debugging with the browser's debugger,
   * this currently simply returns the original function.
   *
   * @param {function} func Function to be executed
   * @param {string} name The name of the guard
   * @return {function}
   */
  guard: function(func, name) {
    return func;
  }
};

module.exports = ReactErrorUtils;

},{}],168:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactEventEmitterMixin
 */

"use strict";

var EventPluginHub = require("./EventPluginHub");

function runEventQueueInBatch(events) {
  EventPluginHub.enqueueEvents(events);
  EventPluginHub.processEventQueue();
}

var ReactEventEmitterMixin = {

  /**
   * Streams a fired top-level event to `EventPluginHub` where plugins have the
   * opportunity to create `ReactEvent`s to be dispatched.
   *
   * @param {string} topLevelType Record from `EventConstants`.
   * @param {object} topLevelTarget The listening component root node.
   * @param {string} topLevelTargetID ID of `topLevelTarget`.
   * @param {object} nativeEvent Native environment event.
   */
  handleTopLevel: function(
      topLevelType,
      topLevelTarget,
      topLevelTargetID,
      nativeEvent) {
    var events = EventPluginHub.extractEvents(
      topLevelType,
      topLevelTarget,
      topLevelTargetID,
      nativeEvent
    );

    runEventQueueInBatch(events);
  }
};

module.exports = ReactEventEmitterMixin;

},{"./EventPluginHub":125}],169:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactEventListener
 * @typechecks static-only
 */

"use strict";

var EventListener = require("./EventListener");
var ExecutionEnvironment = require("./ExecutionEnvironment");
var PooledClass = require("./PooledClass");
var ReactInstanceHandles = require("./ReactInstanceHandles");
var ReactMount = require("./ReactMount");
var ReactUpdates = require("./ReactUpdates");

var assign = require("./Object.assign");
var getEventTarget = require("./getEventTarget");
var getUnboundedScrollPosition = require("./getUnboundedScrollPosition");

/**
 * Finds the parent React component of `node`.
 *
 * @param {*} node
 * @return {?DOMEventTarget} Parent container, or `null` if the specified node
 *                           is not nested.
 */
function findParent(node) {
  // TODO: It may be a good idea to cache this to prevent unnecessary DOM
  // traversal, but caching is difficult to do correctly without using a
  // mutation observer to listen for all DOM changes.
  var nodeID = ReactMount.getID(node);
  var rootID = ReactInstanceHandles.getReactRootIDFromNodeID(nodeID);
  var container = ReactMount.findReactContainerForID(rootID);
  var parent = ReactMount.getFirstReactDOM(container);
  return parent;
}

// Used to store ancestor hierarchy in top level callback
function TopLevelCallbackBookKeeping(topLevelType, nativeEvent) {
  this.topLevelType = topLevelType;
  this.nativeEvent = nativeEvent;
  this.ancestors = [];
}
assign(TopLevelCallbackBookKeeping.prototype, {
  destructor: function() {
    this.topLevelType = null;
    this.nativeEvent = null;
    this.ancestors.length = 0;
  }
});
PooledClass.addPoolingTo(
  TopLevelCallbackBookKeeping,
  PooledClass.twoArgumentPooler
);

function handleTopLevelImpl(bookKeeping) {
  var topLevelTarget = ReactMount.getFirstReactDOM(
    getEventTarget(bookKeeping.nativeEvent)
  ) || window;

  // Loop through the hierarchy, in case there's any nested components.
  // It's important that we build the array of ancestors before calling any
  // event handlers, because event handlers can modify the DOM, leading to
  // inconsistencies with ReactMount's node cache. See #1105.
  var ancestor = topLevelTarget;
  while (ancestor) {
    bookKeeping.ancestors.push(ancestor);
    ancestor = findParent(ancestor);
  }

  for (var i = 0, l = bookKeeping.ancestors.length; i < l; i++) {
    topLevelTarget = bookKeeping.ancestors[i];
    var topLevelTargetID = ReactMount.getID(topLevelTarget) || '';
    ReactEventListener._handleTopLevel(
      bookKeeping.topLevelType,
      topLevelTarget,
      topLevelTargetID,
      bookKeeping.nativeEvent
    );
  }
}

function scrollValueMonitor(cb) {
  var scrollPosition = getUnboundedScrollPosition(window);
  cb(scrollPosition);
}

var ReactEventListener = {
  _enabled: true,
  _handleTopLevel: null,

  WINDOW_HANDLE: ExecutionEnvironment.canUseDOM ? window : null,

  setHandleTopLevel: function(handleTopLevel) {
    ReactEventListener._handleTopLevel = handleTopLevel;
  },

  setEnabled: function(enabled) {
    ReactEventListener._enabled = !!enabled;
  },

  isEnabled: function() {
    return ReactEventListener._enabled;
  },


  /**
   * Traps top-level events by using event bubbling.
   *
   * @param {string} topLevelType Record from `EventConstants`.
   * @param {string} handlerBaseName Event name (e.g. "click").
   * @param {object} handle Element on which to attach listener.
   * @return {object} An object with a remove function which will forcefully
   *                  remove the listener.
   * @internal
   */
  trapBubbledEvent: function(topLevelType, handlerBaseName, handle) {
    var element = handle;
    if (!element) {
      return;
    }
    return EventListener.listen(
      element,
      handlerBaseName,
      ReactEventListener.dispatchEvent.bind(null, topLevelType)
    );
  },

  /**
   * Traps a top-level event by using event capturing.
   *
   * @param {string} topLevelType Record from `EventConstants`.
   * @param {string} handlerBaseName Event name (e.g. "click").
   * @param {object} handle Element on which to attach listener.
   * @return {object} An object with a remove function which will forcefully
   *                  remove the listener.
   * @internal
   */
  trapCapturedEvent: function(topLevelType, handlerBaseName, handle) {
    var element = handle;
    if (!element) {
      return;
    }
    return EventListener.capture(
      element,
      handlerBaseName,
      ReactEventListener.dispatchEvent.bind(null, topLevelType)
    );
  },

  monitorScrollValue: function(refresh) {
    var callback = scrollValueMonitor.bind(null, refresh);
    EventListener.listen(window, 'scroll', callback);
    EventListener.listen(window, 'resize', callback);
  },

  dispatchEvent: function(topLevelType, nativeEvent) {
    if (!ReactEventListener._enabled) {
      return;
    }

    var bookKeeping = TopLevelCallbackBookKeeping.getPooled(
      topLevelType,
      nativeEvent
    );
    try {
      // Event queue being processed in the same cycle allows
      // `preventDefault`.
      ReactUpdates.batchedUpdates(handleTopLevelImpl, bookKeeping);
    } finally {
      TopLevelCallbackBookKeeping.release(bookKeeping);
    }
  }
};

module.exports = ReactEventListener;

},{"./EventListener":124,"./ExecutionEnvironment":129,"./Object.assign":135,"./PooledClass":136,"./ReactInstanceHandles":172,"./ReactMount":176,"./ReactUpdates":197,"./getEventTarget":238,"./getUnboundedScrollPosition":243}],170:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactInjection
 */

"use strict";

var DOMProperty = require("./DOMProperty");
var EventPluginHub = require("./EventPluginHub");
var ReactComponent = require("./ReactComponent");
var ReactCompositeComponent = require("./ReactCompositeComponent");
var ReactEmptyComponent = require("./ReactEmptyComponent");
var ReactBrowserEventEmitter = require("./ReactBrowserEventEmitter");
var ReactNativeComponent = require("./ReactNativeComponent");
var ReactPerf = require("./ReactPerf");
var ReactRootIndex = require("./ReactRootIndex");
var ReactUpdates = require("./ReactUpdates");

var ReactInjection = {
  Component: ReactComponent.injection,
  CompositeComponent: ReactCompositeComponent.injection,
  DOMProperty: DOMProperty.injection,
  EmptyComponent: ReactEmptyComponent.injection,
  EventPluginHub: EventPluginHub.injection,
  EventEmitter: ReactBrowserEventEmitter.injection,
  NativeComponent: ReactNativeComponent.injection,
  Perf: ReactPerf.injection,
  RootIndex: ReactRootIndex.injection,
  Updates: ReactUpdates.injection
};

module.exports = ReactInjection;

},{"./DOMProperty":118,"./EventPluginHub":125,"./ReactBrowserEventEmitter":139,"./ReactComponent":143,"./ReactCompositeComponent":146,"./ReactEmptyComponent":166,"./ReactNativeComponent":179,"./ReactPerf":181,"./ReactRootIndex":188,"./ReactUpdates":197}],171:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactInputSelection
 */

"use strict";

var ReactDOMSelection = require("./ReactDOMSelection");

var containsNode = require("./containsNode");
var focusNode = require("./focusNode");
var getActiveElement = require("./getActiveElement");

function isInDocument(node) {
  return containsNode(document.documentElement, node);
}

/**
 * @ReactInputSelection: React input selection module. Based on Selection.js,
 * but modified to be suitable for react and has a couple of bug fixes (doesn't
 * assume buttons have range selections allowed).
 * Input selection module for React.
 */
var ReactInputSelection = {

  hasSelectionCapabilities: function(elem) {
    return elem && (
      (elem.nodeName === 'INPUT' && elem.type === 'text') ||
      elem.nodeName === 'TEXTAREA' ||
      elem.contentEditable === 'true'
    );
  },

  getSelectionInformation: function() {
    var focusedElem = getActiveElement();
    return {
      focusedElem: focusedElem,
      selectionRange:
          ReactInputSelection.hasSelectionCapabilities(focusedElem) ?
          ReactInputSelection.getSelection(focusedElem) :
          null
    };
  },

  /**
   * @restoreSelection: If any selection information was potentially lost,
   * restore it. This is useful when performing operations that could remove dom
   * nodes and place them back in, resulting in focus being lost.
   */
  restoreSelection: function(priorSelectionInformation) {
    var curFocusedElem = getActiveElement();
    var priorFocusedElem = priorSelectionInformation.focusedElem;
    var priorSelectionRange = priorSelectionInformation.selectionRange;
    if (curFocusedElem !== priorFocusedElem &&
        isInDocument(priorFocusedElem)) {
      if (ReactInputSelection.hasSelectionCapabilities(priorFocusedElem)) {
        ReactInputSelection.setSelection(
          priorFocusedElem,
          priorSelectionRange
        );
      }
      focusNode(priorFocusedElem);
    }
  },

  /**
   * @getSelection: Gets the selection bounds of a focused textarea, input or
   * contentEditable node.
   * -@input: Look up selection bounds of this input
   * -@return {start: selectionStart, end: selectionEnd}
   */
  getSelection: function(input) {
    var selection;

    if ('selectionStart' in input) {
      // Modern browser with input or textarea.
      selection = {
        start: input.selectionStart,
        end: input.selectionEnd
      };
    } else if (document.selection && input.nodeName === 'INPUT') {
      // IE8 input.
      var range = document.selection.createRange();
      // There can only be one selection per document in IE, so it must
      // be in our element.
      if (range.parentElement() === input) {
        selection = {
          start: -range.moveStart('character', -input.value.length),
          end: -range.moveEnd('character', -input.value.length)
        };
      }
    } else {
      // Content editable or old IE textarea.
      selection = ReactDOMSelection.getOffsets(input);
    }

    return selection || {start: 0, end: 0};
  },

  /**
   * @setSelection: Sets the selection bounds of a textarea or input and focuses
   * the input.
   * -@input     Set selection bounds of this input or textarea
   * -@offsets   Object of same form that is returned from get*
   */
  setSelection: function(input, offsets) {
    var start = offsets.start;
    var end = offsets.end;
    if (typeof end === 'undefined') {
      end = start;
    }

    if ('selectionStart' in input) {
      input.selectionStart = start;
      input.selectionEnd = Math.min(end, input.value.length);
    } else if (document.selection && input.nodeName === 'INPUT') {
      var range = input.createTextRange();
      range.collapse(true);
      range.moveStart('character', start);
      range.moveEnd('character', end - start);
      range.select();
    } else {
      ReactDOMSelection.setOffsets(input, offsets);
    }
  }
};

module.exports = ReactInputSelection;

},{"./ReactDOMSelection":158,"./containsNode":221,"./focusNode":232,"./getActiveElement":234}],172:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactInstanceHandles
 * @typechecks static-only
 */

"use strict";

var ReactRootIndex = require("./ReactRootIndex");

var invariant = require("./invariant");

var SEPARATOR = '.';
var SEPARATOR_LENGTH = SEPARATOR.length;

/**
 * Maximum depth of traversals before we consider the possibility of a bad ID.
 */
var MAX_TREE_DEPTH = 100;

/**
 * Creates a DOM ID prefix to use when mounting React components.
 *
 * @param {number} index A unique integer
 * @return {string} React root ID.
 * @internal
 */
function getReactRootIDString(index) {
  return SEPARATOR + index.toString(36);
}

/**
 * Checks if a character in the supplied ID is a separator or the end.
 *
 * @param {string} id A React DOM ID.
 * @param {number} index Index of the character to check.
 * @return {boolean} True if the character is a separator or end of the ID.
 * @private
 */
function isBoundary(id, index) {
  return id.charAt(index) === SEPARATOR || index === id.length;
}

/**
 * Checks if the supplied string is a valid React DOM ID.
 *
 * @param {string} id A React DOM ID, maybe.
 * @return {boolean} True if the string is a valid React DOM ID.
 * @private
 */
function isValidID(id) {
  return id === '' || (
    id.charAt(0) === SEPARATOR && id.charAt(id.length - 1) !== SEPARATOR
  );
}

/**
 * Checks if the first ID is an ancestor of or equal to the second ID.
 *
 * @param {string} ancestorID
 * @param {string} descendantID
 * @return {boolean} True if `ancestorID` is an ancestor of `descendantID`.
 * @internal
 */
function isAncestorIDOf(ancestorID, descendantID) {
  return (
    descendantID.indexOf(ancestorID) === 0 &&
    isBoundary(descendantID, ancestorID.length)
  );
}

/**
 * Gets the parent ID of the supplied React DOM ID, `id`.
 *
 * @param {string} id ID of a component.
 * @return {string} ID of the parent, or an empty string.
 * @private
 */
function getParentID(id) {
  return id ? id.substr(0, id.lastIndexOf(SEPARATOR)) : '';
}

/**
 * Gets the next DOM ID on the tree path from the supplied `ancestorID` to the
 * supplied `destinationID`. If they are equal, the ID is returned.
 *
 * @param {string} ancestorID ID of an ancestor node of `destinationID`.
 * @param {string} destinationID ID of the destination node.
 * @return {string} Next ID on the path from `ancestorID` to `destinationID`.
 * @private
 */
function getNextDescendantID(ancestorID, destinationID) {
  ("production" !== process.env.NODE_ENV ? invariant(
    isValidID(ancestorID) && isValidID(destinationID),
    'getNextDescendantID(%s, %s): Received an invalid React DOM ID.',
    ancestorID,
    destinationID
  ) : invariant(isValidID(ancestorID) && isValidID(destinationID)));
  ("production" !== process.env.NODE_ENV ? invariant(
    isAncestorIDOf(ancestorID, destinationID),
    'getNextDescendantID(...): React has made an invalid assumption about ' +
    'the DOM hierarchy. Expected `%s` to be an ancestor of `%s`.',
    ancestorID,
    destinationID
  ) : invariant(isAncestorIDOf(ancestorID, destinationID)));
  if (ancestorID === destinationID) {
    return ancestorID;
  }
  // Skip over the ancestor and the immediate separator. Traverse until we hit
  // another separator or we reach the end of `destinationID`.
  var start = ancestorID.length + SEPARATOR_LENGTH;
  for (var i = start; i < destinationID.length; i++) {
    if (isBoundary(destinationID, i)) {
      break;
    }
  }
  return destinationID.substr(0, i);
}

/**
 * Gets the nearest common ancestor ID of two IDs.
 *
 * Using this ID scheme, the nearest common ancestor ID is the longest common
 * prefix of the two IDs that immediately preceded a "marker" in both strings.
 *
 * @param {string} oneID
 * @param {string} twoID
 * @return {string} Nearest common ancestor ID, or the empty string if none.
 * @private
 */
function getFirstCommonAncestorID(oneID, twoID) {
  var minLength = Math.min(oneID.length, twoID.length);
  if (minLength === 0) {
    return '';
  }
  var lastCommonMarkerIndex = 0;
  // Use `<=` to traverse until the "EOL" of the shorter string.
  for (var i = 0; i <= minLength; i++) {
    if (isBoundary(oneID, i) && isBoundary(twoID, i)) {
      lastCommonMarkerIndex = i;
    } else if (oneID.charAt(i) !== twoID.charAt(i)) {
      break;
    }
  }
  var longestCommonID = oneID.substr(0, lastCommonMarkerIndex);
  ("production" !== process.env.NODE_ENV ? invariant(
    isValidID(longestCommonID),
    'getFirstCommonAncestorID(%s, %s): Expected a valid React DOM ID: %s',
    oneID,
    twoID,
    longestCommonID
  ) : invariant(isValidID(longestCommonID)));
  return longestCommonID;
}

/**
 * Traverses the parent path between two IDs (either up or down). The IDs must
 * not be the same, and there must exist a parent path between them. If the
 * callback returns `false`, traversal is stopped.
 *
 * @param {?string} start ID at which to start traversal.
 * @param {?string} stop ID at which to end traversal.
 * @param {function} cb Callback to invoke each ID with.
 * @param {?boolean} skipFirst Whether or not to skip the first node.
 * @param {?boolean} skipLast Whether or not to skip the last node.
 * @private
 */
function traverseParentPath(start, stop, cb, arg, skipFirst, skipLast) {
  start = start || '';
  stop = stop || '';
  ("production" !== process.env.NODE_ENV ? invariant(
    start !== stop,
    'traverseParentPath(...): Cannot traverse from and to the same ID, `%s`.',
    start
  ) : invariant(start !== stop));
  var traverseUp = isAncestorIDOf(stop, start);
  ("production" !== process.env.NODE_ENV ? invariant(
    traverseUp || isAncestorIDOf(start, stop),
    'traverseParentPath(%s, %s, ...): Cannot traverse from two IDs that do ' +
    'not have a parent path.',
    start,
    stop
  ) : invariant(traverseUp || isAncestorIDOf(start, stop)));
  // Traverse from `start` to `stop` one depth at a time.
  var depth = 0;
  var traverse = traverseUp ? getParentID : getNextDescendantID;
  for (var id = start; /* until break */; id = traverse(id, stop)) {
    var ret;
    if ((!skipFirst || id !== start) && (!skipLast || id !== stop)) {
      ret = cb(id, traverseUp, arg);
    }
    if (ret === false || id === stop) {
      // Only break //after// visiting `stop`.
      break;
    }
    ("production" !== process.env.NODE_ENV ? invariant(
      depth++ < MAX_TREE_DEPTH,
      'traverseParentPath(%s, %s, ...): Detected an infinite loop while ' +
      'traversing the React DOM ID tree. This may be due to malformed IDs: %s',
      start, stop
    ) : invariant(depth++ < MAX_TREE_DEPTH));
  }
}

/**
 * Manages the IDs assigned to DOM representations of React components. This
 * uses a specific scheme in order to traverse the DOM efficiently (e.g. in
 * order to simulate events).
 *
 * @internal
 */
var ReactInstanceHandles = {

  /**
   * Constructs a React root ID
   * @return {string} A React root ID.
   */
  createReactRootID: function() {
    return getReactRootIDString(ReactRootIndex.createReactRootIndex());
  },

  /**
   * Constructs a React ID by joining a root ID with a name.
   *
   * @param {string} rootID Root ID of a parent component.
   * @param {string} name A component's name (as flattened children).
   * @return {string} A React ID.
   * @internal
   */
  createReactID: function(rootID, name) {
    return rootID + name;
  },

  /**
   * Gets the DOM ID of the React component that is the root of the tree that
   * contains the React component with the supplied DOM ID.
   *
   * @param {string} id DOM ID of a React component.
   * @return {?string} DOM ID of the React component that is the root.
   * @internal
   */
  getReactRootIDFromNodeID: function(id) {
    if (id && id.charAt(0) === SEPARATOR && id.length > 1) {
      var index = id.indexOf(SEPARATOR, 1);
      return index > -1 ? id.substr(0, index) : id;
    }
    return null;
  },

  /**
   * Traverses the ID hierarchy and invokes the supplied `cb` on any IDs that
   * should would receive a `mouseEnter` or `mouseLeave` event.
   *
   * NOTE: Does not invoke the callback on the nearest common ancestor because
   * nothing "entered" or "left" that element.
   *
   * @param {string} leaveID ID being left.
   * @param {string} enterID ID being entered.
   * @param {function} cb Callback to invoke on each entered/left ID.
   * @param {*} upArg Argument to invoke the callback with on left IDs.
   * @param {*} downArg Argument to invoke the callback with on entered IDs.
   * @internal
   */
  traverseEnterLeave: function(leaveID, enterID, cb, upArg, downArg) {
    var ancestorID = getFirstCommonAncestorID(leaveID, enterID);
    if (ancestorID !== leaveID) {
      traverseParentPath(leaveID, ancestorID, cb, upArg, false, true);
    }
    if (ancestorID !== enterID) {
      traverseParentPath(ancestorID, enterID, cb, downArg, true, false);
    }
  },

  /**
   * Simulates the traversal of a two-phase, capture/bubble event dispatch.
   *
   * NOTE: This traversal happens on IDs without touching the DOM.
   *
   * @param {string} targetID ID of the target node.
   * @param {function} cb Callback to invoke.
   * @param {*} arg Argument to invoke the callback with.
   * @internal
   */
  traverseTwoPhase: function(targetID, cb, arg) {
    if (targetID) {
      traverseParentPath('', targetID, cb, arg, true, false);
      traverseParentPath(targetID, '', cb, arg, false, true);
    }
  },

  /**
   * Traverse a node ID, calling the supplied `cb` for each ancestor ID. For
   * example, passing `.0.$row-0.1` would result in `cb` getting called
   * with `.0`, `.0.$row-0`, and `.0.$row-0.1`.
   *
   * NOTE: This traversal happens on IDs without touching the DOM.
   *
   * @param {string} targetID ID of the target node.
   * @param {function} cb Callback to invoke.
   * @param {*} arg Argument to invoke the callback with.
   * @internal
   */
  traverseAncestors: function(targetID, cb, arg) {
    traverseParentPath('', targetID, cb, arg, true, false);
  },

  /**
   * Exposed for unit testing.
   * @private
   */
  _getFirstCommonAncestorID: getFirstCommonAncestorID,

  /**
   * Exposed for unit testing.
   * @private
   */
  _getNextDescendantID: getNextDescendantID,

  isAncestorIDOf: isAncestorIDOf,

  SEPARATOR: SEPARATOR

};

module.exports = ReactInstanceHandles;

}).call(this,require('_process'))
},{"./ReactRootIndex":188,"./invariant":247,"_process":91}],173:[function(require,module,exports){
(function (process){
/**
 * Copyright 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactLegacyElement
 */

"use strict";

var ReactCurrentOwner = require("./ReactCurrentOwner");

var invariant = require("./invariant");
var monitorCodeUse = require("./monitorCodeUse");
var warning = require("./warning");

var legacyFactoryLogs = {};
function warnForLegacyFactoryCall() {
  if (!ReactLegacyElementFactory._isLegacyCallWarningEnabled) {
    return;
  }
  var owner = ReactCurrentOwner.current;
  var name = owner && owner.constructor ? owner.constructor.displayName : '';
  if (!name) {
    name = 'Something';
  }
  if (legacyFactoryLogs.hasOwnProperty(name)) {
    return;
  }
  legacyFactoryLogs[name] = true;
  ("production" !== process.env.NODE_ENV ? warning(
    false,
    name + ' is calling a React component directly. ' +
    'Use a factory or JSX instead. See: http://fb.me/react-legacyfactory'
  ) : null);
  monitorCodeUse('react_legacy_factory_call', { version: 3, name: name });
}

function warnForPlainFunctionType(type) {
  var isReactClass =
    type.prototype &&
    typeof type.prototype.mountComponent === 'function' &&
    typeof type.prototype.receiveComponent === 'function';
  if (isReactClass) {
    ("production" !== process.env.NODE_ENV ? warning(
      false,
      'Did not expect to get a React class here. Use `Component` instead ' +
      'of `Component.type` or `this.constructor`.'
    ) : null);
  } else {
    if (!type._reactWarnedForThisType) {
      try {
        type._reactWarnedForThisType = true;
      } catch (x) {
        // just incase this is a frozen object or some special object
      }
      monitorCodeUse(
        'react_non_component_in_jsx',
        { version: 3, name: type.name }
      );
    }
    ("production" !== process.env.NODE_ENV ? warning(
      false,
      'This JSX uses a plain function. Only React components are ' +
      'valid in React\'s JSX transform.'
    ) : null);
  }
}

function warnForNonLegacyFactory(type) {
  ("production" !== process.env.NODE_ENV ? warning(
    false,
    'Do not pass React.DOM.' + type.type + ' to JSX or createFactory. ' +
    'Use the string "' + type.type + '" instead.'
  ) : null);
}

/**
 * Transfer static properties from the source to the target. Functions are
 * rebound to have this reflect the original source.
 */
function proxyStaticMethods(target, source) {
  if (typeof source !== 'function') {
    return;
  }
  for (var key in source) {
    if (source.hasOwnProperty(key)) {
      var value = source[key];
      if (typeof value === 'function') {
        var bound = value.bind(source);
        // Copy any properties defined on the function, such as `isRequired` on
        // a PropTypes validator.
        for (var k in value) {
          if (value.hasOwnProperty(k)) {
            bound[k] = value[k];
          }
        }
        target[key] = bound;
      } else {
        target[key] = value;
      }
    }
  }
}

// We use an object instead of a boolean because booleans are ignored by our
// mocking libraries when these factories gets mocked.
var LEGACY_MARKER = {};
var NON_LEGACY_MARKER = {};

var ReactLegacyElementFactory = {};

ReactLegacyElementFactory.wrapCreateFactory = function(createFactory) {
  var legacyCreateFactory = function(type) {
    if (typeof type !== 'function') {
      // Non-function types cannot be legacy factories
      return createFactory(type);
    }

    if (type.isReactNonLegacyFactory) {
      // This is probably a factory created by ReactDOM we unwrap it to get to
      // the underlying string type. It shouldn't have been passed here so we
      // warn.
      if ("production" !== process.env.NODE_ENV) {
        warnForNonLegacyFactory(type);
      }
      return createFactory(type.type);
    }

    if (type.isReactLegacyFactory) {
      // This is probably a legacy factory created by ReactCompositeComponent.
      // We unwrap it to get to the underlying class.
      return createFactory(type.type);
    }

    if ("production" !== process.env.NODE_ENV) {
      warnForPlainFunctionType(type);
    }

    // Unless it's a legacy factory, then this is probably a plain function,
    // that is expecting to be invoked by JSX. We can just return it as is.
    return type;
  };
  return legacyCreateFactory;
};

ReactLegacyElementFactory.wrapCreateElement = function(createElement) {
  var legacyCreateElement = function(type, props, children) {
    if (typeof type !== 'function') {
      // Non-function types cannot be legacy factories
      return createElement.apply(this, arguments);
    }

    var args;

    if (type.isReactNonLegacyFactory) {
      // This is probably a factory created by ReactDOM we unwrap it to get to
      // the underlying string type. It shouldn't have been passed here so we
      // warn.
      if ("production" !== process.env.NODE_ENV) {
        warnForNonLegacyFactory(type);
      }
      args = Array.prototype.slice.call(arguments, 0);
      args[0] = type.type;
      return createElement.apply(this, args);
    }

    if (type.isReactLegacyFactory) {
      // This is probably a legacy factory created by ReactCompositeComponent.
      // We unwrap it to get to the underlying class.
      if (type._isMockFunction) {
        // If this is a mock function, people will expect it to be called. We
        // will actually call the original mock factory function instead. This
        // future proofs unit testing that assume that these are classes.
        type.type._mockedReactClassConstructor = type;
      }
      args = Array.prototype.slice.call(arguments, 0);
      args[0] = type.type;
      return createElement.apply(this, args);
    }

    if ("production" !== process.env.NODE_ENV) {
      warnForPlainFunctionType(type);
    }

    // This is being called with a plain function we should invoke it
    // immediately as if this was used with legacy JSX.
    return type.apply(null, Array.prototype.slice.call(arguments, 1));
  };
  return legacyCreateElement;
};

ReactLegacyElementFactory.wrapFactory = function(factory) {
  ("production" !== process.env.NODE_ENV ? invariant(
    typeof factory === 'function',
    'This is suppose to accept a element factory'
  ) : invariant(typeof factory === 'function'));
  var legacyElementFactory = function(config, children) {
    // This factory should not be called when JSX is used. Use JSX instead.
    if ("production" !== process.env.NODE_ENV) {
      warnForLegacyFactoryCall();
    }
    return factory.apply(this, arguments);
  };
  proxyStaticMethods(legacyElementFactory, factory.type);
  legacyElementFactory.isReactLegacyFactory = LEGACY_MARKER;
  legacyElementFactory.type = factory.type;
  return legacyElementFactory;
};

// This is used to mark a factory that will remain. E.g. we're allowed to call
// it as a function. However, you're not suppose to pass it to createElement
// or createFactory, so it will warn you if you do.
ReactLegacyElementFactory.markNonLegacyFactory = function(factory) {
  factory.isReactNonLegacyFactory = NON_LEGACY_MARKER;
  return factory;
};

// Checks if a factory function is actually a legacy factory pretending to
// be a class.
ReactLegacyElementFactory.isValidFactory = function(factory) {
  // TODO: This will be removed and moved into a class validator or something.
  return typeof factory === 'function' &&
    factory.isReactLegacyFactory === LEGACY_MARKER;
};

ReactLegacyElementFactory.isValidClass = function(factory) {
  if ("production" !== process.env.NODE_ENV) {
    ("production" !== process.env.NODE_ENV ? warning(
      false,
      'isValidClass is deprecated and will be removed in a future release. ' +
      'Use a more specific validator instead.'
    ) : null);
  }
  return ReactLegacyElementFactory.isValidFactory(factory);
};

ReactLegacyElementFactory._isLegacyCallWarningEnabled = true;

module.exports = ReactLegacyElementFactory;

}).call(this,require('_process'))
},{"./ReactCurrentOwner":148,"./invariant":247,"./monitorCodeUse":257,"./warning":267,"_process":91}],174:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactLink
 * @typechecks static-only
 */

"use strict";

/**
 * ReactLink encapsulates a common pattern in which a component wants to modify
 * a prop received from its parent. ReactLink allows the parent to pass down a
 * value coupled with a callback that, when invoked, expresses an intent to
 * modify that value. For example:
 *
 * React.createClass({
 *   getInitialState: function() {
 *     return {value: ''};
 *   },
 *   render: function() {
 *     var valueLink = new ReactLink(this.state.value, this._handleValueChange);
 *     return <input valueLink={valueLink} />;
 *   },
 *   this._handleValueChange: function(newValue) {
 *     this.setState({value: newValue});
 *   }
 * });
 *
 * We have provided some sugary mixins to make the creation and
 * consumption of ReactLink easier; see LinkedValueUtils and LinkedStateMixin.
 */

var React = require("./React");

/**
 * @param {*} value current value of the link
 * @param {function} requestChange callback to request a change
 */
function ReactLink(value, requestChange) {
  this.value = value;
  this.requestChange = requestChange;
}

/**
 * Creates a PropType that enforces the ReactLink API and optionally checks the
 * type of the value being passed inside the link. Example:
 *
 * MyComponent.propTypes = {
 *   tabIndexLink: ReactLink.PropTypes.link(React.PropTypes.number)
 * }
 */
function createLinkTypeChecker(linkType) {
  var shapes = {
    value: typeof linkType === 'undefined' ?
      React.PropTypes.any.isRequired :
      linkType.isRequired,
    requestChange: React.PropTypes.func.isRequired
  };
  return React.PropTypes.shape(shapes);
}

ReactLink.PropTypes = {
  link: createLinkTypeChecker
};

module.exports = ReactLink;

},{"./React":137}],175:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactMarkupChecksum
 */

"use strict";

var adler32 = require("./adler32");

var ReactMarkupChecksum = {
  CHECKSUM_ATTR_NAME: 'data-react-checksum',

  /**
   * @param {string} markup Markup string
   * @return {string} Markup string with checksum attribute attached
   */
  addChecksumToMarkup: function(markup) {
    var checksum = adler32(markup);
    return markup.replace(
      '>',
      ' ' + ReactMarkupChecksum.CHECKSUM_ATTR_NAME + '="' + checksum + '">'
    );
  },

  /**
   * @param {string} markup to use
   * @param {DOMElement} element root React element
   * @returns {boolean} whether or not the markup is the same
   */
  canReuseMarkup: function(markup, element) {
    var existingChecksum = element.getAttribute(
      ReactMarkupChecksum.CHECKSUM_ATTR_NAME
    );
    existingChecksum = existingChecksum && parseInt(existingChecksum, 10);
    var markupChecksum = adler32(markup);
    return markupChecksum === existingChecksum;
  }
};

module.exports = ReactMarkupChecksum;

},{"./adler32":217}],176:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactMount
 */

"use strict";

var DOMProperty = require("./DOMProperty");
var ReactBrowserEventEmitter = require("./ReactBrowserEventEmitter");
var ReactCurrentOwner = require("./ReactCurrentOwner");
var ReactElement = require("./ReactElement");
var ReactLegacyElement = require("./ReactLegacyElement");
var ReactInstanceHandles = require("./ReactInstanceHandles");
var ReactPerf = require("./ReactPerf");

var containsNode = require("./containsNode");
var deprecated = require("./deprecated");
var getReactRootElementInContainer = require("./getReactRootElementInContainer");
var instantiateReactComponent = require("./instantiateReactComponent");
var invariant = require("./invariant");
var shouldUpdateReactComponent = require("./shouldUpdateReactComponent");
var warning = require("./warning");

var createElement = ReactLegacyElement.wrapCreateElement(
  ReactElement.createElement
);

var SEPARATOR = ReactInstanceHandles.SEPARATOR;

var ATTR_NAME = DOMProperty.ID_ATTRIBUTE_NAME;
var nodeCache = {};

var ELEMENT_NODE_TYPE = 1;
var DOC_NODE_TYPE = 9;

/** Mapping from reactRootID to React component instance. */
var instancesByReactRootID = {};

/** Mapping from reactRootID to `container` nodes. */
var containersByReactRootID = {};

if ("production" !== process.env.NODE_ENV) {
  /** __DEV__-only mapping from reactRootID to root elements. */
  var rootElementsByReactRootID = {};
}

// Used to store breadth-first search state in findComponentRoot.
var findComponentRootReusableArray = [];

/**
 * @param {DOMElement} container DOM element that may contain a React component.
 * @return {?string} A "reactRoot" ID, if a React component is rendered.
 */
function getReactRootID(container) {
  var rootElement = getReactRootElementInContainer(container);
  return rootElement && ReactMount.getID(rootElement);
}

/**
 * Accessing node[ATTR_NAME] or calling getAttribute(ATTR_NAME) on a form
 * element can return its control whose name or ID equals ATTR_NAME. All
 * DOM nodes support `getAttributeNode` but this can also get called on
 * other objects so just return '' if we're given something other than a
 * DOM node (such as window).
 *
 * @param {?DOMElement|DOMWindow|DOMDocument|DOMTextNode} node DOM node.
 * @return {string} ID of the supplied `domNode`.
 */
function getID(node) {
  var id = internalGetID(node);
  if (id) {
    if (nodeCache.hasOwnProperty(id)) {
      var cached = nodeCache[id];
      if (cached !== node) {
        ("production" !== process.env.NODE_ENV ? invariant(
          !isValid(cached, id),
          'ReactMount: Two valid but unequal nodes with the same `%s`: %s',
          ATTR_NAME, id
        ) : invariant(!isValid(cached, id)));

        nodeCache[id] = node;
      }
    } else {
      nodeCache[id] = node;
    }
  }

  return id;
}

function internalGetID(node) {
  // If node is something like a window, document, or text node, none of
  // which support attributes or a .getAttribute method, gracefully return
  // the empty string, as if the attribute were missing.
  return node && node.getAttribute && node.getAttribute(ATTR_NAME) || '';
}

/**
 * Sets the React-specific ID of the given node.
 *
 * @param {DOMElement} node The DOM node whose ID will be set.
 * @param {string} id The value of the ID attribute.
 */
function setID(node, id) {
  var oldID = internalGetID(node);
  if (oldID !== id) {
    delete nodeCache[oldID];
  }
  node.setAttribute(ATTR_NAME, id);
  nodeCache[id] = node;
}

/**
 * Finds the node with the supplied React-generated DOM ID.
 *
 * @param {string} id A React-generated DOM ID.
 * @return {DOMElement} DOM node with the suppled `id`.
 * @internal
 */
function getNode(id) {
  if (!nodeCache.hasOwnProperty(id) || !isValid(nodeCache[id], id)) {
    nodeCache[id] = ReactMount.findReactNodeByID(id);
  }
  return nodeCache[id];
}

/**
 * A node is "valid" if it is contained by a currently mounted container.
 *
 * This means that the node does not have to be contained by a document in
 * order to be considered valid.
 *
 * @param {?DOMElement} node The candidate DOM node.
 * @param {string} id The expected ID of the node.
 * @return {boolean} Whether the node is contained by a mounted container.
 */
function isValid(node, id) {
  if (node) {
    ("production" !== process.env.NODE_ENV ? invariant(
      internalGetID(node) === id,
      'ReactMount: Unexpected modification of `%s`',
      ATTR_NAME
    ) : invariant(internalGetID(node) === id));

    var container = ReactMount.findReactContainerForID(id);
    if (container && containsNode(container, node)) {
      return true;
    }
  }

  return false;
}

/**
 * Causes the cache to forget about one React-specific ID.
 *
 * @param {string} id The ID to forget.
 */
function purgeID(id) {
  delete nodeCache[id];
}

var deepestNodeSoFar = null;
function findDeepestCachedAncestorImpl(ancestorID) {
  var ancestor = nodeCache[ancestorID];
  if (ancestor && isValid(ancestor, ancestorID)) {
    deepestNodeSoFar = ancestor;
  } else {
    // This node isn't populated in the cache, so presumably none of its
    // descendants are. Break out of the loop.
    return false;
  }
}

/**
 * Return the deepest cached node whose ID is a prefix of `targetID`.
 */
function findDeepestCachedAncestor(targetID) {
  deepestNodeSoFar = null;
  ReactInstanceHandles.traverseAncestors(
    targetID,
    findDeepestCachedAncestorImpl
  );

  var foundNode = deepestNodeSoFar;
  deepestNodeSoFar = null;
  return foundNode;
}

/**
 * Mounting is the process of initializing a React component by creatings its
 * representative DOM elements and inserting them into a supplied `container`.
 * Any prior content inside `container` is destroyed in the process.
 *
 *   ReactMount.render(
 *     component,
 *     document.getElementById('container')
 *   );
 *
 *   <div id="container">                   <-- Supplied `container`.
 *     <div data-reactid=".3">              <-- Rendered reactRoot of React
 *       // ...                                 component.
 *     </div>
 *   </div>
 *
 * Inside of `container`, the first element rendered is the "reactRoot".
 */
var ReactMount = {
  /** Exposed for debugging purposes **/
  _instancesByReactRootID: instancesByReactRootID,

  /**
   * This is a hook provided to support rendering React components while
   * ensuring that the apparent scroll position of its `container` does not
   * change.
   *
   * @param {DOMElement} container The `container` being rendered into.
   * @param {function} renderCallback This must be called once to do the render.
   */
  scrollMonitor: function(container, renderCallback) {
    renderCallback();
  },

  /**
   * Take a component that's already mounted into the DOM and replace its props
   * @param {ReactComponent} prevComponent component instance already in the DOM
   * @param {ReactComponent} nextComponent component instance to render
   * @param {DOMElement} container container to render into
   * @param {?function} callback function triggered on completion
   */
  _updateRootComponent: function(
      prevComponent,
      nextComponent,
      container,
      callback) {
    var nextProps = nextComponent.props;
    ReactMount.scrollMonitor(container, function() {
      prevComponent.replaceProps(nextProps, callback);
    });

    if ("production" !== process.env.NODE_ENV) {
      // Record the root element in case it later gets transplanted.
      rootElementsByReactRootID[getReactRootID(container)] =
        getReactRootElementInContainer(container);
    }

    return prevComponent;
  },

  /**
   * Register a component into the instance map and starts scroll value
   * monitoring
   * @param {ReactComponent} nextComponent component instance to render
   * @param {DOMElement} container container to render into
   * @return {string} reactRoot ID prefix
   */
  _registerComponent: function(nextComponent, container) {
    ("production" !== process.env.NODE_ENV ? invariant(
      container && (
        container.nodeType === ELEMENT_NODE_TYPE ||
        container.nodeType === DOC_NODE_TYPE
      ),
      '_registerComponent(...): Target container is not a DOM element.'
    ) : invariant(container && (
      container.nodeType === ELEMENT_NODE_TYPE ||
      container.nodeType === DOC_NODE_TYPE
    )));

    ReactBrowserEventEmitter.ensureScrollValueMonitoring();

    var reactRootID = ReactMount.registerContainer(container);
    instancesByReactRootID[reactRootID] = nextComponent;
    return reactRootID;
  },

  /**
   * Render a new component into the DOM.
   * @param {ReactComponent} nextComponent component instance to render
   * @param {DOMElement} container container to render into
   * @param {boolean} shouldReuseMarkup if we should skip the markup insertion
   * @return {ReactComponent} nextComponent
   */
  _renderNewRootComponent: ReactPerf.measure(
    'ReactMount',
    '_renderNewRootComponent',
    function(
        nextComponent,
        container,
        shouldReuseMarkup) {
      // Various parts of our code (such as ReactCompositeComponent's
      // _renderValidatedComponent) assume that calls to render aren't nested;
      // verify that that's the case.
      ("production" !== process.env.NODE_ENV ? warning(
        ReactCurrentOwner.current == null,
        '_renderNewRootComponent(): Render methods should be a pure function ' +
        'of props and state; triggering nested component updates from ' +
        'render is not allowed. If necessary, trigger nested updates in ' +
        'componentDidUpdate.'
      ) : null);

      var componentInstance = instantiateReactComponent(nextComponent, null);
      var reactRootID = ReactMount._registerComponent(
        componentInstance,
        container
      );
      componentInstance.mountComponentIntoNode(
        reactRootID,
        container,
        shouldReuseMarkup
      );

      if ("production" !== process.env.NODE_ENV) {
        // Record the root element in case it later gets transplanted.
        rootElementsByReactRootID[reactRootID] =
          getReactRootElementInContainer(container);
      }

      return componentInstance;
    }
  ),

  /**
   * Renders a React component into the DOM in the supplied `container`.
   *
   * If the React component was previously rendered into `container`, this will
   * perform an update on it and only mutate the DOM as necessary to reflect the
   * latest React component.
   *
   * @param {ReactElement} nextElement Component element to render.
   * @param {DOMElement} container DOM element to render into.
   * @param {?function} callback function triggered on completion
   * @return {ReactComponent} Component instance rendered in `container`.
   */
  render: function(nextElement, container, callback) {
    ("production" !== process.env.NODE_ENV ? invariant(
      ReactElement.isValidElement(nextElement),
      'renderComponent(): Invalid component element.%s',
      (
        typeof nextElement === 'string' ?
          ' Instead of passing an element string, make sure to instantiate ' +
          'it by passing it to React.createElement.' :
        ReactLegacyElement.isValidFactory(nextElement) ?
          ' Instead of passing a component class, make sure to instantiate ' +
          'it by passing it to React.createElement.' :
        // Check if it quacks like a element
        typeof nextElement.props !== "undefined" ?
          ' This may be caused by unintentionally loading two independent ' +
          'copies of React.' :
          ''
      )
    ) : invariant(ReactElement.isValidElement(nextElement)));

    var prevComponent = instancesByReactRootID[getReactRootID(container)];

    if (prevComponent) {
      var prevElement = prevComponent._currentElement;
      if (shouldUpdateReactComponent(prevElement, nextElement)) {
        return ReactMount._updateRootComponent(
          prevComponent,
          nextElement,
          container,
          callback
        );
      } else {
        ReactMount.unmountComponentAtNode(container);
      }
    }

    var reactRootElement = getReactRootElementInContainer(container);
    var containerHasReactMarkup =
      reactRootElement && ReactMount.isRenderedByReact(reactRootElement);

    var shouldReuseMarkup = containerHasReactMarkup && !prevComponent;

    var component = ReactMount._renderNewRootComponent(
      nextElement,
      container,
      shouldReuseMarkup
    );
    callback && callback.call(component);
    return component;
  },

  /**
   * Constructs a component instance of `constructor` with `initialProps` and
   * renders it into the supplied `container`.
   *
   * @param {function} constructor React component constructor.
   * @param {?object} props Initial props of the component instance.
   * @param {DOMElement} container DOM element to render into.
   * @return {ReactComponent} Component instance rendered in `container`.
   */
  constructAndRenderComponent: function(constructor, props, container) {
    var element = createElement(constructor, props);
    return ReactMount.render(element, container);
  },

  /**
   * Constructs a component instance of `constructor` with `initialProps` and
   * renders it into a container node identified by supplied `id`.
   *
   * @param {function} componentConstructor React component constructor
   * @param {?object} props Initial props of the component instance.
   * @param {string} id ID of the DOM element to render into.
   * @return {ReactComponent} Component instance rendered in the container node.
   */
  constructAndRenderComponentByID: function(constructor, props, id) {
    var domNode = document.getElementById(id);
    ("production" !== process.env.NODE_ENV ? invariant(
      domNode,
      'Tried to get element with id of "%s" but it is not present on the page.',
      id
    ) : invariant(domNode));
    return ReactMount.constructAndRenderComponent(constructor, props, domNode);
  },

  /**
   * Registers a container node into which React components will be rendered.
   * This also creates the "reactRoot" ID that will be assigned to the element
   * rendered within.
   *
   * @param {DOMElement} container DOM element to register as a container.
   * @return {string} The "reactRoot" ID of elements rendered within.
   */
  registerContainer: function(container) {
    var reactRootID = getReactRootID(container);
    if (reactRootID) {
      // If one exists, make sure it is a valid "reactRoot" ID.
      reactRootID = ReactInstanceHandles.getReactRootIDFromNodeID(reactRootID);
    }
    if (!reactRootID) {
      // No valid "reactRoot" ID found, create one.
      reactRootID = ReactInstanceHandles.createReactRootID();
    }
    containersByReactRootID[reactRootID] = container;
    return reactRootID;
  },

  /**
   * Unmounts and destroys the React component rendered in the `container`.
   *
   * @param {DOMElement} container DOM element containing a React component.
   * @return {boolean} True if a component was found in and unmounted from
   *                   `container`
   */
  unmountComponentAtNode: function(container) {
    // Various parts of our code (such as ReactCompositeComponent's
    // _renderValidatedComponent) assume that calls to render aren't nested;
    // verify that that's the case. (Strictly speaking, unmounting won't cause a
    // render but we still don't expect to be in a render call here.)
    ("production" !== process.env.NODE_ENV ? warning(
      ReactCurrentOwner.current == null,
      'unmountComponentAtNode(): Render methods should be a pure function of ' +
      'props and state; triggering nested component updates from render is ' +
      'not allowed. If necessary, trigger nested updates in ' +
      'componentDidUpdate.'
    ) : null);

    var reactRootID = getReactRootID(container);
    var component = instancesByReactRootID[reactRootID];
    if (!component) {
      return false;
    }
    ReactMount.unmountComponentFromNode(component, container);
    delete instancesByReactRootID[reactRootID];
    delete containersByReactRootID[reactRootID];
    if ("production" !== process.env.NODE_ENV) {
      delete rootElementsByReactRootID[reactRootID];
    }
    return true;
  },

  /**
   * Unmounts a component and removes it from the DOM.
   *
   * @param {ReactComponent} instance React component instance.
   * @param {DOMElement} container DOM element to unmount from.
   * @final
   * @internal
   * @see {ReactMount.unmountComponentAtNode}
   */
  unmountComponentFromNode: function(instance, container) {
    instance.unmountComponent();

    if (container.nodeType === DOC_NODE_TYPE) {
      container = container.documentElement;
    }

    // http://jsperf.com/emptying-a-node
    while (container.lastChild) {
      container.removeChild(container.lastChild);
    }
  },

  /**
   * Finds the container DOM element that contains React component to which the
   * supplied DOM `id` belongs.
   *
   * @param {string} id The ID of an element rendered by a React component.
   * @return {?DOMElement} DOM element that contains the `id`.
   */
  findReactContainerForID: function(id) {
    var reactRootID = ReactInstanceHandles.getReactRootIDFromNodeID(id);
    var container = containersByReactRootID[reactRootID];

    if ("production" !== process.env.NODE_ENV) {
      var rootElement = rootElementsByReactRootID[reactRootID];
      if (rootElement && rootElement.parentNode !== container) {
        ("production" !== process.env.NODE_ENV ? invariant(
          // Call internalGetID here because getID calls isValid which calls
          // findReactContainerForID (this function).
          internalGetID(rootElement) === reactRootID,
          'ReactMount: Root element ID differed from reactRootID.'
        ) : invariant(// Call internalGetID here because getID calls isValid which calls
        // findReactContainerForID (this function).
        internalGetID(rootElement) === reactRootID));

        var containerChild = container.firstChild;
        if (containerChild &&
            reactRootID === internalGetID(containerChild)) {
          // If the container has a new child with the same ID as the old
          // root element, then rootElementsByReactRootID[reactRootID] is
          // just stale and needs to be updated. The case that deserves a
          // warning is when the container is empty.
          rootElementsByReactRootID[reactRootID] = containerChild;
        } else {
          console.warn(
            'ReactMount: Root element has been removed from its original ' +
            'container. New container:', rootElement.parentNode
          );
        }
      }
    }

    return container;
  },

  /**
   * Finds an element rendered by React with the supplied ID.
   *
   * @param {string} id ID of a DOM node in the React component.
   * @return {DOMElement} Root DOM node of the React component.
   */
  findReactNodeByID: function(id) {
    var reactRoot = ReactMount.findReactContainerForID(id);
    return ReactMount.findComponentRoot(reactRoot, id);
  },

  /**
   * True if the supplied `node` is rendered by React.
   *
   * @param {*} node DOM Element to check.
   * @return {boolean} True if the DOM Element appears to be rendered by React.
   * @internal
   */
  isRenderedByReact: function(node) {
    if (node.nodeType !== 1) {
      // Not a DOMElement, therefore not a React component
      return false;
    }
    var id = ReactMount.getID(node);
    return id ? id.charAt(0) === SEPARATOR : false;
  },

  /**
   * Traverses up the ancestors of the supplied node to find a node that is a
   * DOM representation of a React component.
   *
   * @param {*} node
   * @return {?DOMEventTarget}
   * @internal
   */
  getFirstReactDOM: function(node) {
    var current = node;
    while (current && current.parentNode !== current) {
      if (ReactMount.isRenderedByReact(current)) {
        return current;
      }
      current = current.parentNode;
    }
    return null;
  },

  /**
   * Finds a node with the supplied `targetID` inside of the supplied
   * `ancestorNode`.  Exploits the ID naming scheme to perform the search
   * quickly.
   *
   * @param {DOMEventTarget} ancestorNode Search from this root.
   * @pararm {string} targetID ID of the DOM representation of the component.
   * @return {DOMEventTarget} DOM node with the supplied `targetID`.
   * @internal
   */
  findComponentRoot: function(ancestorNode, targetID) {
    var firstChildren = findComponentRootReusableArray;
    var childIndex = 0;

    var deepestAncestor = findDeepestCachedAncestor(targetID) || ancestorNode;

    firstChildren[0] = deepestAncestor.firstChild;
    firstChildren.length = 1;

    while (childIndex < firstChildren.length) {
      var child = firstChildren[childIndex++];
      var targetChild;

      while (child) {
        var childID = ReactMount.getID(child);
        if (childID) {
          // Even if we find the node we're looking for, we finish looping
          // through its siblings to ensure they're cached so that we don't have
          // to revisit this node again. Otherwise, we make n^2 calls to getID
          // when visiting the many children of a single node in order.

          if (targetID === childID) {
            targetChild = child;
          } else if (ReactInstanceHandles.isAncestorIDOf(childID, targetID)) {
            // If we find a child whose ID is an ancestor of the given ID,
            // then we can be sure that we only want to search the subtree
            // rooted at this child, so we can throw out the rest of the
            // search state.
            firstChildren.length = childIndex = 0;
            firstChildren.push(child.firstChild);
          }

        } else {
          // If this child had no ID, then there's a chance that it was
          // injected automatically by the browser, as when a `<table>`
          // element sprouts an extra `<tbody>` child as a side effect of
          // `.innerHTML` parsing. Optimistically continue down this
          // branch, but not before examining the other siblings.
          firstChildren.push(child.firstChild);
        }

        child = child.nextSibling;
      }

      if (targetChild) {
        // Emptying firstChildren/findComponentRootReusableArray is
        // not necessary for correctness, but it helps the GC reclaim
        // any nodes that were left at the end of the search.
        firstChildren.length = 0;

        return targetChild;
      }
    }

    firstChildren.length = 0;

    ("production" !== process.env.NODE_ENV ? invariant(
      false,
      'findComponentRoot(..., %s): Unable to find element. This probably ' +
      'means the DOM was unexpectedly mutated (e.g., by the browser), ' +
      'usually due to forgetting a <tbody> when using tables, nesting tags ' +
      'like <form>, <p>, or <a>, or using non-SVG elements in an <svg> ' +
      'parent. ' +
      'Try inspecting the child nodes of the element with React ID `%s`.',
      targetID,
      ReactMount.getID(ancestorNode)
    ) : invariant(false));
  },


  /**
   * React ID utilities.
   */

  getReactRootID: getReactRootID,

  getID: getID,

  setID: setID,

  getNode: getNode,

  purgeID: purgeID
};

// Deprecations (remove for 0.13)
ReactMount.renderComponent = deprecated(
  'ReactMount',
  'renderComponent',
  'render',
  this,
  ReactMount.render
);

module.exports = ReactMount;

}).call(this,require('_process'))
},{"./DOMProperty":118,"./ReactBrowserEventEmitter":139,"./ReactCurrentOwner":148,"./ReactElement":164,"./ReactInstanceHandles":172,"./ReactLegacyElement":173,"./ReactPerf":181,"./containsNode":221,"./deprecated":227,"./getReactRootElementInContainer":241,"./instantiateReactComponent":246,"./invariant":247,"./shouldUpdateReactComponent":263,"./warning":267,"_process":91}],177:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactMultiChild
 * @typechecks static-only
 */

"use strict";

var ReactComponent = require("./ReactComponent");
var ReactMultiChildUpdateTypes = require("./ReactMultiChildUpdateTypes");

var flattenChildren = require("./flattenChildren");
var instantiateReactComponent = require("./instantiateReactComponent");
var shouldUpdateReactComponent = require("./shouldUpdateReactComponent");

/**
 * Updating children of a component may trigger recursive updates. The depth is
 * used to batch recursive updates to render markup more efficiently.
 *
 * @type {number}
 * @private
 */
var updateDepth = 0;

/**
 * Queue of update configuration objects.
 *
 * Each object has a `type` property that is in `ReactMultiChildUpdateTypes`.
 *
 * @type {array<object>}
 * @private
 */
var updateQueue = [];

/**
 * Queue of markup to be rendered.
 *
 * @type {array<string>}
 * @private
 */
var markupQueue = [];

/**
 * Enqueues markup to be rendered and inserted at a supplied index.
 *
 * @param {string} parentID ID of the parent component.
 * @param {string} markup Markup that renders into an element.
 * @param {number} toIndex Destination index.
 * @private
 */
function enqueueMarkup(parentID, markup, toIndex) {
  // NOTE: Null values reduce hidden classes.
  updateQueue.push({
    parentID: parentID,
    parentNode: null,
    type: ReactMultiChildUpdateTypes.INSERT_MARKUP,
    markupIndex: markupQueue.push(markup) - 1,
    textContent: null,
    fromIndex: null,
    toIndex: toIndex
  });
}

/**
 * Enqueues moving an existing element to another index.
 *
 * @param {string} parentID ID of the parent component.
 * @param {number} fromIndex Source index of the existing element.
 * @param {number} toIndex Destination index of the element.
 * @private
 */
function enqueueMove(parentID, fromIndex, toIndex) {
  // NOTE: Null values reduce hidden classes.
  updateQueue.push({
    parentID: parentID,
    parentNode: null,
    type: ReactMultiChildUpdateTypes.MOVE_EXISTING,
    markupIndex: null,
    textContent: null,
    fromIndex: fromIndex,
    toIndex: toIndex
  });
}

/**
 * Enqueues removing an element at an index.
 *
 * @param {string} parentID ID of the parent component.
 * @param {number} fromIndex Index of the element to remove.
 * @private
 */
function enqueueRemove(parentID, fromIndex) {
  // NOTE: Null values reduce hidden classes.
  updateQueue.push({
    parentID: parentID,
    parentNode: null,
    type: ReactMultiChildUpdateTypes.REMOVE_NODE,
    markupIndex: null,
    textContent: null,
    fromIndex: fromIndex,
    toIndex: null
  });
}

/**
 * Enqueues setting the text content.
 *
 * @param {string} parentID ID of the parent component.
 * @param {string} textContent Text content to set.
 * @private
 */
function enqueueTextContent(parentID, textContent) {
  // NOTE: Null values reduce hidden classes.
  updateQueue.push({
    parentID: parentID,
    parentNode: null,
    type: ReactMultiChildUpdateTypes.TEXT_CONTENT,
    markupIndex: null,
    textContent: textContent,
    fromIndex: null,
    toIndex: null
  });
}

/**
 * Processes any enqueued updates.
 *
 * @private
 */
function processQueue() {
  if (updateQueue.length) {
    ReactComponent.BackendIDOperations.dangerouslyProcessChildrenUpdates(
      updateQueue,
      markupQueue
    );
    clearQueue();
  }
}

/**
 * Clears any enqueued updates.
 *
 * @private
 */
function clearQueue() {
  updateQueue.length = 0;
  markupQueue.length = 0;
}

/**
 * ReactMultiChild are capable of reconciling multiple children.
 *
 * @class ReactMultiChild
 * @internal
 */
var ReactMultiChild = {

  /**
   * Provides common functionality for components that must reconcile multiple
   * children. This is used by `ReactDOMComponent` to mount, update, and
   * unmount child components.
   *
   * @lends {ReactMultiChild.prototype}
   */
  Mixin: {

    /**
     * Generates a "mount image" for each of the supplied children. In the case
     * of `ReactDOMComponent`, a mount image is a string of markup.
     *
     * @param {?object} nestedChildren Nested child maps.
     * @return {array} An array of mounted representations.
     * @internal
     */
    mountChildren: function(nestedChildren, transaction) {
      var children = flattenChildren(nestedChildren);
      var mountImages = [];
      var index = 0;
      this._renderedChildren = children;
      for (var name in children) {
        var child = children[name];
        if (children.hasOwnProperty(name)) {
          // The rendered children must be turned into instances as they're
          // mounted.
          var childInstance = instantiateReactComponent(child, null);
          children[name] = childInstance;
          // Inlined for performance, see `ReactInstanceHandles.createReactID`.
          var rootID = this._rootNodeID + name;
          var mountImage = childInstance.mountComponent(
            rootID,
            transaction,
            this._mountDepth + 1
          );
          childInstance._mountIndex = index;
          mountImages.push(mountImage);
          index++;
        }
      }
      return mountImages;
    },

    /**
     * Replaces any rendered children with a text content string.
     *
     * @param {string} nextContent String of content.
     * @internal
     */
    updateTextContent: function(nextContent) {
      updateDepth++;
      var errorThrown = true;
      try {
        var prevChildren = this._renderedChildren;
        // Remove any rendered children.
        for (var name in prevChildren) {
          if (prevChildren.hasOwnProperty(name)) {
            this._unmountChildByName(prevChildren[name], name);
          }
        }
        // Set new text content.
        this.setTextContent(nextContent);
        errorThrown = false;
      } finally {
        updateDepth--;
        if (!updateDepth) {
          errorThrown ? clearQueue() : processQueue();
        }
      }
    },

    /**
     * Updates the rendered children with new children.
     *
     * @param {?object} nextNestedChildren Nested child maps.
     * @param {ReactReconcileTransaction} transaction
     * @internal
     */
    updateChildren: function(nextNestedChildren, transaction) {
      updateDepth++;
      var errorThrown = true;
      try {
        this._updateChildren(nextNestedChildren, transaction);
        errorThrown = false;
      } finally {
        updateDepth--;
        if (!updateDepth) {
          errorThrown ? clearQueue() : processQueue();
        }
      }
    },

    /**
     * Improve performance by isolating this hot code path from the try/catch
     * block in `updateChildren`.
     *
     * @param {?object} nextNestedChildren Nested child maps.
     * @param {ReactReconcileTransaction} transaction
     * @final
     * @protected
     */
    _updateChildren: function(nextNestedChildren, transaction) {
      var nextChildren = flattenChildren(nextNestedChildren);
      var prevChildren = this._renderedChildren;
      if (!nextChildren && !prevChildren) {
        return;
      }
      var name;
      // `nextIndex` will increment for each child in `nextChildren`, but
      // `lastIndex` will be the last index visited in `prevChildren`.
      var lastIndex = 0;
      var nextIndex = 0;
      for (name in nextChildren) {
        if (!nextChildren.hasOwnProperty(name)) {
          continue;
        }
        var prevChild = prevChildren && prevChildren[name];
        var prevElement = prevChild && prevChild._currentElement;
        var nextElement = nextChildren[name];
        if (shouldUpdateReactComponent(prevElement, nextElement)) {
          this.moveChild(prevChild, nextIndex, lastIndex);
          lastIndex = Math.max(prevChild._mountIndex, lastIndex);
          prevChild.receiveComponent(nextElement, transaction);
          prevChild._mountIndex = nextIndex;
        } else {
          if (prevChild) {
            // Update `lastIndex` before `_mountIndex` gets unset by unmounting.
            lastIndex = Math.max(prevChild._mountIndex, lastIndex);
            this._unmountChildByName(prevChild, name);
          }
          // The child must be instantiated before it's mounted.
          var nextChildInstance = instantiateReactComponent(
            nextElement,
            null
          );
          this._mountChildByNameAtIndex(
            nextChildInstance, name, nextIndex, transaction
          );
        }
        nextIndex++;
      }
      // Remove children that are no longer present.
      for (name in prevChildren) {
        if (prevChildren.hasOwnProperty(name) &&
            !(nextChildren && nextChildren[name])) {
          this._unmountChildByName(prevChildren[name], name);
        }
      }
    },

    /**
     * Unmounts all rendered children. This should be used to clean up children
     * when this component is unmounted.
     *
     * @internal
     */
    unmountChildren: function() {
      var renderedChildren = this._renderedChildren;
      for (var name in renderedChildren) {
        var renderedChild = renderedChildren[name];
        // TODO: When is this not true?
        if (renderedChild.unmountComponent) {
          renderedChild.unmountComponent();
        }
      }
      this._renderedChildren = null;
    },

    /**
     * Moves a child component to the supplied index.
     *
     * @param {ReactComponent} child Component to move.
     * @param {number} toIndex Destination index of the element.
     * @param {number} lastIndex Last index visited of the siblings of `child`.
     * @protected
     */
    moveChild: function(child, toIndex, lastIndex) {
      // If the index of `child` is less than `lastIndex`, then it needs to
      // be moved. Otherwise, we do not need to move it because a child will be
      // inserted or moved before `child`.
      if (child._mountIndex < lastIndex) {
        enqueueMove(this._rootNodeID, child._mountIndex, toIndex);
      }
    },

    /**
     * Creates a child component.
     *
     * @param {ReactComponent} child Component to create.
     * @param {string} mountImage Markup to insert.
     * @protected
     */
    createChild: function(child, mountImage) {
      enqueueMarkup(this._rootNodeID, mountImage, child._mountIndex);
    },

    /**
     * Removes a child component.
     *
     * @param {ReactComponent} child Child to remove.
     * @protected
     */
    removeChild: function(child) {
      enqueueRemove(this._rootNodeID, child._mountIndex);
    },

    /**
     * Sets this text content string.
     *
     * @param {string} textContent Text content to set.
     * @protected
     */
    setTextContent: function(textContent) {
      enqueueTextContent(this._rootNodeID, textContent);
    },

    /**
     * Mounts a child with the supplied name.
     *
     * NOTE: This is part of `updateChildren` and is here for readability.
     *
     * @param {ReactComponent} child Component to mount.
     * @param {string} name Name of the child.
     * @param {number} index Index at which to insert the child.
     * @param {ReactReconcileTransaction} transaction
     * @private
     */
    _mountChildByNameAtIndex: function(child, name, index, transaction) {
      // Inlined for performance, see `ReactInstanceHandles.createReactID`.
      var rootID = this._rootNodeID + name;
      var mountImage = child.mountComponent(
        rootID,
        transaction,
        this._mountDepth + 1
      );
      child._mountIndex = index;
      this.createChild(child, mountImage);
      this._renderedChildren = this._renderedChildren || {};
      this._renderedChildren[name] = child;
    },

    /**
     * Unmounts a rendered child by name.
     *
     * NOTE: This is part of `updateChildren` and is here for readability.
     *
     * @param {ReactComponent} child Component to unmount.
     * @param {string} name Name of the child in `this._renderedChildren`.
     * @private
     */
    _unmountChildByName: function(child, name) {
      this.removeChild(child);
      child._mountIndex = null;
      child.unmountComponent();
      delete this._renderedChildren[name];
    }

  }

};

module.exports = ReactMultiChild;

},{"./ReactComponent":143,"./ReactMultiChildUpdateTypes":178,"./flattenChildren":231,"./instantiateReactComponent":246,"./shouldUpdateReactComponent":263}],178:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactMultiChildUpdateTypes
 */

"use strict";

var keyMirror = require("./keyMirror");

/**
 * When a component's children are updated, a series of update configuration
 * objects are created in order to batch and serialize the required changes.
 *
 * Enumerates all the possible types of update configurations.
 *
 * @internal
 */
var ReactMultiChildUpdateTypes = keyMirror({
  INSERT_MARKUP: null,
  MOVE_EXISTING: null,
  REMOVE_NODE: null,
  TEXT_CONTENT: null
});

module.exports = ReactMultiChildUpdateTypes;

},{"./keyMirror":253}],179:[function(require,module,exports){
(function (process){
/**
 * Copyright 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactNativeComponent
 */

"use strict";

var assign = require("./Object.assign");
var invariant = require("./invariant");

var genericComponentClass = null;
// This registry keeps track of wrapper classes around native tags
var tagToComponentClass = {};

var ReactNativeComponentInjection = {
  // This accepts a class that receives the tag string. This is a catch all
  // that can render any kind of tag.
  injectGenericComponentClass: function(componentClass) {
    genericComponentClass = componentClass;
  },
  // This accepts a keyed object with classes as values. Each key represents a
  // tag. That particular tag will use this class instead of the generic one.
  injectComponentClasses: function(componentClasses) {
    assign(tagToComponentClass, componentClasses);
  }
};

/**
 * Create an internal class for a specific tag.
 *
 * @param {string} tag The tag for which to create an internal instance.
 * @param {any} props The props passed to the instance constructor.
 * @return {ReactComponent} component The injected empty component.
 */
function createInstanceForTag(tag, props, parentType) {
  var componentClass = tagToComponentClass[tag];
  if (componentClass == null) {
    ("production" !== process.env.NODE_ENV ? invariant(
      genericComponentClass,
      'There is no registered component for the tag %s',
      tag
    ) : invariant(genericComponentClass));
    return new genericComponentClass(tag, props);
  }
  if (parentType === tag) {
    // Avoid recursion
    ("production" !== process.env.NODE_ENV ? invariant(
      genericComponentClass,
      'There is no registered component for the tag %s',
      tag
    ) : invariant(genericComponentClass));
    return new genericComponentClass(tag, props);
  }
  // Unwrap legacy factories
  return new componentClass.type(props);
}

var ReactNativeComponent = {
  createInstanceForTag: createInstanceForTag,
  injection: ReactNativeComponentInjection
};

module.exports = ReactNativeComponent;

}).call(this,require('_process'))
},{"./Object.assign":135,"./invariant":247,"_process":91}],180:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactOwner
 */

"use strict";

var emptyObject = require("./emptyObject");
var invariant = require("./invariant");

/**
 * ReactOwners are capable of storing references to owned components.
 *
 * All components are capable of //being// referenced by owner components, but
 * only ReactOwner components are capable of //referencing// owned components.
 * The named reference is known as a "ref".
 *
 * Refs are available when mounted and updated during reconciliation.
 *
 *   var MyComponent = React.createClass({
 *     render: function() {
 *       return (
 *         <div onClick={this.handleClick}>
 *           <CustomComponent ref="custom" />
 *         </div>
 *       );
 *     },
 *     handleClick: function() {
 *       this.refs.custom.handleClick();
 *     },
 *     componentDidMount: function() {
 *       this.refs.custom.initialize();
 *     }
 *   });
 *
 * Refs should rarely be used. When refs are used, they should only be done to
 * control data that is not handled by React's data flow.
 *
 * @class ReactOwner
 */
var ReactOwner = {

  /**
   * @param {?object} object
   * @return {boolean} True if `object` is a valid owner.
   * @final
   */
  isValidOwner: function(object) {
    return !!(
      object &&
      typeof object.attachRef === 'function' &&
      typeof object.detachRef === 'function'
    );
  },

  /**
   * Adds a component by ref to an owner component.
   *
   * @param {ReactComponent} component Component to reference.
   * @param {string} ref Name by which to refer to the component.
   * @param {ReactOwner} owner Component on which to record the ref.
   * @final
   * @internal
   */
  addComponentAsRefTo: function(component, ref, owner) {
    ("production" !== process.env.NODE_ENV ? invariant(
      ReactOwner.isValidOwner(owner),
      'addComponentAsRefTo(...): Only a ReactOwner can have refs. This ' +
      'usually means that you\'re trying to add a ref to a component that ' +
      'doesn\'t have an owner (that is, was not created inside of another ' +
      'component\'s `render` method). Try rendering this component inside of ' +
      'a new top-level component which will hold the ref.'
    ) : invariant(ReactOwner.isValidOwner(owner)));
    owner.attachRef(ref, component);
  },

  /**
   * Removes a component by ref from an owner component.
   *
   * @param {ReactComponent} component Component to dereference.
   * @param {string} ref Name of the ref to remove.
   * @param {ReactOwner} owner Component on which the ref is recorded.
   * @final
   * @internal
   */
  removeComponentAsRefFrom: function(component, ref, owner) {
    ("production" !== process.env.NODE_ENV ? invariant(
      ReactOwner.isValidOwner(owner),
      'removeComponentAsRefFrom(...): Only a ReactOwner can have refs. This ' +
      'usually means that you\'re trying to remove a ref to a component that ' +
      'doesn\'t have an owner (that is, was not created inside of another ' +
      'component\'s `render` method). Try rendering this component inside of ' +
      'a new top-level component which will hold the ref.'
    ) : invariant(ReactOwner.isValidOwner(owner)));
    // Check that `component` is still the current ref because we do not want to
    // detach the ref if another component stole it.
    if (owner.refs[ref] === component) {
      owner.detachRef(ref);
    }
  },

  /**
   * A ReactComponent must mix this in to have refs.
   *
   * @lends {ReactOwner.prototype}
   */
  Mixin: {

    construct: function() {
      this.refs = emptyObject;
    },

    /**
     * Lazily allocates the refs object and stores `component` as `ref`.
     *
     * @param {string} ref Reference name.
     * @param {component} component Component to store as `ref`.
     * @final
     * @private
     */
    attachRef: function(ref, component) {
      ("production" !== process.env.NODE_ENV ? invariant(
        component.isOwnedBy(this),
        'attachRef(%s, ...): Only a component\'s owner can store a ref to it.',
        ref
      ) : invariant(component.isOwnedBy(this)));
      var refs = this.refs === emptyObject ? (this.refs = {}) : this.refs;
      refs[ref] = component;
    },

    /**
     * Detaches a reference name.
     *
     * @param {string} ref Name to dereference.
     * @final
     * @private
     */
    detachRef: function(ref) {
      delete this.refs[ref];
    }

  }

};

module.exports = ReactOwner;

}).call(this,require('_process'))
},{"./emptyObject":229,"./invariant":247,"_process":91}],181:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactPerf
 * @typechecks static-only
 */

"use strict";

/**
 * ReactPerf is a general AOP system designed to measure performance. This
 * module only has the hooks: see ReactDefaultPerf for the analysis tool.
 */
var ReactPerf = {
  /**
   * Boolean to enable/disable measurement. Set to false by default to prevent
   * accidental logging and perf loss.
   */
  enableMeasure: false,

  /**
   * Holds onto the measure function in use. By default, don't measure
   * anything, but we'll override this if we inject a measure function.
   */
  storedMeasure: _noMeasure,

  /**
   * Use this to wrap methods you want to measure. Zero overhead in production.
   *
   * @param {string} objName
   * @param {string} fnName
   * @param {function} func
   * @return {function}
   */
  measure: function(objName, fnName, func) {
    if ("production" !== process.env.NODE_ENV) {
      var measuredFunc = null;
      var wrapper = function() {
        if (ReactPerf.enableMeasure) {
          if (!measuredFunc) {
            measuredFunc = ReactPerf.storedMeasure(objName, fnName, func);
          }
          return measuredFunc.apply(this, arguments);
        }
        return func.apply(this, arguments);
      };
      wrapper.displayName = objName + '_' + fnName;
      return wrapper;
    }
    return func;
  },

  injection: {
    /**
     * @param {function} measure
     */
    injectMeasure: function(measure) {
      ReactPerf.storedMeasure = measure;
    }
  }
};

/**
 * Simply passes through the measured function, without measuring it.
 *
 * @param {string} objName
 * @param {string} fnName
 * @param {function} func
 * @return {function}
 */
function _noMeasure(objName, fnName, func) {
  return func;
}

module.exports = ReactPerf;

}).call(this,require('_process'))
},{"_process":91}],182:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactPropTransferer
 */

"use strict";

var assign = require("./Object.assign");
var emptyFunction = require("./emptyFunction");
var invariant = require("./invariant");
var joinClasses = require("./joinClasses");
var warning = require("./warning");

var didWarn = false;

/**
 * Creates a transfer strategy that will merge prop values using the supplied
 * `mergeStrategy`. If a prop was previously unset, this just sets it.
 *
 * @param {function} mergeStrategy
 * @return {function}
 */
function createTransferStrategy(mergeStrategy) {
  return function(props, key, value) {
    if (!props.hasOwnProperty(key)) {
      props[key] = value;
    } else {
      props[key] = mergeStrategy(props[key], value);
    }
  };
}

var transferStrategyMerge = createTransferStrategy(function(a, b) {
  // `merge` overrides the first object's (`props[key]` above) keys using the
  // second object's (`value`) keys. An object's style's existing `propA` would
  // get overridden. Flip the order here.
  return assign({}, b, a);
});

/**
 * Transfer strategies dictate how props are transferred by `transferPropsTo`.
 * NOTE: if you add any more exceptions to this list you should be sure to
 * update `cloneWithProps()` accordingly.
 */
var TransferStrategies = {
  /**
   * Never transfer `children`.
   */
  children: emptyFunction,
  /**
   * Transfer the `className` prop by merging them.
   */
  className: createTransferStrategy(joinClasses),
  /**
   * Transfer the `style` prop (which is an object) by merging them.
   */
  style: transferStrategyMerge
};

/**
 * Mutates the first argument by transferring the properties from the second
 * argument.
 *
 * @param {object} props
 * @param {object} newProps
 * @return {object}
 */
function transferInto(props, newProps) {
  for (var thisKey in newProps) {
    if (!newProps.hasOwnProperty(thisKey)) {
      continue;
    }

    var transferStrategy = TransferStrategies[thisKey];

    if (transferStrategy && TransferStrategies.hasOwnProperty(thisKey)) {
      transferStrategy(props, thisKey, newProps[thisKey]);
    } else if (!props.hasOwnProperty(thisKey)) {
      props[thisKey] = newProps[thisKey];
    }
  }
  return props;
}

/**
 * ReactPropTransferer are capable of transferring props to another component
 * using a `transferPropsTo` method.
 *
 * @class ReactPropTransferer
 */
var ReactPropTransferer = {

  TransferStrategies: TransferStrategies,

  /**
   * Merge two props objects using TransferStrategies.
   *
   * @param {object} oldProps original props (they take precedence)
   * @param {object} newProps new props to merge in
   * @return {object} a new object containing both sets of props merged.
   */
  mergeProps: function(oldProps, newProps) {
    return transferInto(assign({}, oldProps), newProps);
  },

  /**
   * @lends {ReactPropTransferer.prototype}
   */
  Mixin: {

    /**
     * Transfer props from this component to a target component.
     *
     * Props that do not have an explicit transfer strategy will be transferred
     * only if the target component does not already have the prop set.
     *
     * This is usually used to pass down props to a returned root component.
     *
     * @param {ReactElement} element Component receiving the properties.
     * @return {ReactElement} The supplied `component`.
     * @final
     * @protected
     */
    transferPropsTo: function(element) {
      ("production" !== process.env.NODE_ENV ? invariant(
        element._owner === this,
        '%s: You can\'t call transferPropsTo() on a component that you ' +
        'don\'t own, %s. This usually means you are calling ' +
        'transferPropsTo() on a component passed in as props or children.',
        this.constructor.displayName,
        typeof element.type === 'string' ?
        element.type :
        element.type.displayName
      ) : invariant(element._owner === this));

      if ("production" !== process.env.NODE_ENV) {
        if (!didWarn) {
          didWarn = true;
          ("production" !== process.env.NODE_ENV ? warning(
            false,
            'transferPropsTo is deprecated. ' +
            'See http://fb.me/react-transferpropsto for more information.'
          ) : null);
        }
      }

      // Because elements are immutable we have to merge into the existing
      // props object rather than clone it.
      transferInto(element.props, this.props);

      return element;
    }

  }
};

module.exports = ReactPropTransferer;

}).call(this,require('_process'))
},{"./Object.assign":135,"./emptyFunction":228,"./invariant":247,"./joinClasses":252,"./warning":267,"_process":91}],183:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactPropTypeLocationNames
 */

"use strict";

var ReactPropTypeLocationNames = {};

if ("production" !== process.env.NODE_ENV) {
  ReactPropTypeLocationNames = {
    prop: 'prop',
    context: 'context',
    childContext: 'child context'
  };
}

module.exports = ReactPropTypeLocationNames;

}).call(this,require('_process'))
},{"_process":91}],184:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactPropTypeLocations
 */

"use strict";

var keyMirror = require("./keyMirror");

var ReactPropTypeLocations = keyMirror({
  prop: null,
  context: null,
  childContext: null
});

module.exports = ReactPropTypeLocations;

},{"./keyMirror":253}],185:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactPropTypes
 */

"use strict";

var ReactElement = require("./ReactElement");
var ReactPropTypeLocationNames = require("./ReactPropTypeLocationNames");

var deprecated = require("./deprecated");
var emptyFunction = require("./emptyFunction");

/**
 * Collection of methods that allow declaration and validation of props that are
 * supplied to React components. Example usage:
 *
 *   var Props = require('ReactPropTypes');
 *   var MyArticle = React.createClass({
 *     propTypes: {
 *       // An optional string prop named "description".
 *       description: Props.string,
 *
 *       // A required enum prop named "category".
 *       category: Props.oneOf(['News','Photos']).isRequired,
 *
 *       // A prop named "dialog" that requires an instance of Dialog.
 *       dialog: Props.instanceOf(Dialog).isRequired
 *     },
 *     render: function() { ... }
 *   });
 *
 * A more formal specification of how these methods are used:
 *
 *   type := array|bool|func|object|number|string|oneOf([...])|instanceOf(...)
 *   decl := ReactPropTypes.{type}(.isRequired)?
 *
 * Each and every declaration produces a function with the same signature. This
 * allows the creation of custom validation functions. For example:
 *
 *  var MyLink = React.createClass({
 *    propTypes: {
 *      // An optional string or URI prop named "href".
 *      href: function(props, propName, componentName) {
 *        var propValue = props[propName];
 *        if (propValue != null && typeof propValue !== 'string' &&
 *            !(propValue instanceof URI)) {
 *          return new Error(
 *            'Expected a string or an URI for ' + propName + ' in ' +
 *            componentName
 *          );
 *        }
 *      }
 *    },
 *    render: function() {...}
 *  });
 *
 * @internal
 */

var ANONYMOUS = '<<anonymous>>';

var elementTypeChecker = createElementTypeChecker();
var nodeTypeChecker = createNodeChecker();

var ReactPropTypes = {
  array: createPrimitiveTypeChecker('array'),
  bool: createPrimitiveTypeChecker('boolean'),
  func: createPrimitiveTypeChecker('function'),
  number: createPrimitiveTypeChecker('number'),
  object: createPrimitiveTypeChecker('object'),
  string: createPrimitiveTypeChecker('string'),

  any: createAnyTypeChecker(),
  arrayOf: createArrayOfTypeChecker,
  element: elementTypeChecker,
  instanceOf: createInstanceTypeChecker,
  node: nodeTypeChecker,
  objectOf: createObjectOfTypeChecker,
  oneOf: createEnumTypeChecker,
  oneOfType: createUnionTypeChecker,
  shape: createShapeTypeChecker,

  component: deprecated(
    'React.PropTypes',
    'component',
    'element',
    this,
    elementTypeChecker
  ),
  renderable: deprecated(
    'React.PropTypes',
    'renderable',
    'node',
    this,
    nodeTypeChecker
  )
};

function createChainableTypeChecker(validate) {
  function checkType(isRequired, props, propName, componentName, location) {
    componentName = componentName || ANONYMOUS;
    if (props[propName] == null) {
      var locationName = ReactPropTypeLocationNames[location];
      if (isRequired) {
        return new Error(
          ("Required " + locationName + " `" + propName + "` was not specified in ")+
          ("`" + componentName + "`.")
        );
      }
    } else {
      return validate(props, propName, componentName, location);
    }
  }

  var chainedCheckType = checkType.bind(null, false);
  chainedCheckType.isRequired = checkType.bind(null, true);

  return chainedCheckType;
}

function createPrimitiveTypeChecker(expectedType) {
  function validate(props, propName, componentName, location) {
    var propValue = props[propName];
    var propType = getPropType(propValue);
    if (propType !== expectedType) {
      var locationName = ReactPropTypeLocationNames[location];
      // `propValue` being instance of, say, date/regexp, pass the 'object'
      // check, but we can offer a more precise error message here rather than
      // 'of type `object`'.
      var preciseType = getPreciseType(propValue);

      return new Error(
        ("Invalid " + locationName + " `" + propName + "` of type `" + preciseType + "` ") +
        ("supplied to `" + componentName + "`, expected `" + expectedType + "`.")
      );
    }
  }
  return createChainableTypeChecker(validate);
}

function createAnyTypeChecker() {
  return createChainableTypeChecker(emptyFunction.thatReturns());
}

function createArrayOfTypeChecker(typeChecker) {
  function validate(props, propName, componentName, location) {
    var propValue = props[propName];
    if (!Array.isArray(propValue)) {
      var locationName = ReactPropTypeLocationNames[location];
      var propType = getPropType(propValue);
      return new Error(
        ("Invalid " + locationName + " `" + propName + "` of type ") +
        ("`" + propType + "` supplied to `" + componentName + "`, expected an array.")
      );
    }
    for (var i = 0; i < propValue.length; i++) {
      var error = typeChecker(propValue, i, componentName, location);
      if (error instanceof Error) {
        return error;
      }
    }
  }
  return createChainableTypeChecker(validate);
}

function createElementTypeChecker() {
  function validate(props, propName, componentName, location) {
    if (!ReactElement.isValidElement(props[propName])) {
      var locationName = ReactPropTypeLocationNames[location];
      return new Error(
        ("Invalid " + locationName + " `" + propName + "` supplied to ") +
        ("`" + componentName + "`, expected a ReactElement.")
      );
    }
  }
  return createChainableTypeChecker(validate);
}

function createInstanceTypeChecker(expectedClass) {
  function validate(props, propName, componentName, location) {
    if (!(props[propName] instanceof expectedClass)) {
      var locationName = ReactPropTypeLocationNames[location];
      var expectedClassName = expectedClass.name || ANONYMOUS;
      return new Error(
        ("Invalid " + locationName + " `" + propName + "` supplied to ") +
        ("`" + componentName + "`, expected instance of `" + expectedClassName + "`.")
      );
    }
  }
  return createChainableTypeChecker(validate);
}

function createEnumTypeChecker(expectedValues) {
  function validate(props, propName, componentName, location) {
    var propValue = props[propName];
    for (var i = 0; i < expectedValues.length; i++) {
      if (propValue === expectedValues[i]) {
        return;
      }
    }

    var locationName = ReactPropTypeLocationNames[location];
    var valuesString = JSON.stringify(expectedValues);
    return new Error(
      ("Invalid " + locationName + " `" + propName + "` of value `" + propValue + "` ") +
      ("supplied to `" + componentName + "`, expected one of " + valuesString + ".")
    );
  }
  return createChainableTypeChecker(validate);
}

function createObjectOfTypeChecker(typeChecker) {
  function validate(props, propName, componentName, location) {
    var propValue = props[propName];
    var propType = getPropType(propValue);
    if (propType !== 'object') {
      var locationName = ReactPropTypeLocationNames[location];
      return new Error(
        ("Invalid " + locationName + " `" + propName + "` of type ") +
        ("`" + propType + "` supplied to `" + componentName + "`, expected an object.")
      );
    }
    for (var key in propValue) {
      if (propValue.hasOwnProperty(key)) {
        var error = typeChecker(propValue, key, componentName, location);
        if (error instanceof Error) {
          return error;
        }
      }
    }
  }
  return createChainableTypeChecker(validate);
}

function createUnionTypeChecker(arrayOfTypeCheckers) {
  function validate(props, propName, componentName, location) {
    for (var i = 0; i < arrayOfTypeCheckers.length; i++) {
      var checker = arrayOfTypeCheckers[i];
      if (checker(props, propName, componentName, location) == null) {
        return;
      }
    }

    var locationName = ReactPropTypeLocationNames[location];
    return new Error(
      ("Invalid " + locationName + " `" + propName + "` supplied to ") +
      ("`" + componentName + "`.")
    );
  }
  return createChainableTypeChecker(validate);
}

function createNodeChecker() {
  function validate(props, propName, componentName, location) {
    if (!isNode(props[propName])) {
      var locationName = ReactPropTypeLocationNames[location];
      return new Error(
        ("Invalid " + locationName + " `" + propName + "` supplied to ") +
        ("`" + componentName + "`, expected a ReactNode.")
      );
    }
  }
  return createChainableTypeChecker(validate);
}

function createShapeTypeChecker(shapeTypes) {
  function validate(props, propName, componentName, location) {
    var propValue = props[propName];
    var propType = getPropType(propValue);
    if (propType !== 'object') {
      var locationName = ReactPropTypeLocationNames[location];
      return new Error(
        ("Invalid " + locationName + " `" + propName + "` of type `" + propType + "` ") +
        ("supplied to `" + componentName + "`, expected `object`.")
      );
    }
    for (var key in shapeTypes) {
      var checker = shapeTypes[key];
      if (!checker) {
        continue;
      }
      var error = checker(propValue, key, componentName, location);
      if (error) {
        return error;
      }
    }
  }
  return createChainableTypeChecker(validate, 'expected `object`');
}

function isNode(propValue) {
  switch(typeof propValue) {
    case 'number':
    case 'string':
      return true;
    case 'boolean':
      return !propValue;
    case 'object':
      if (Array.isArray(propValue)) {
        return propValue.every(isNode);
      }
      if (ReactElement.isValidElement(propValue)) {
        return true;
      }
      for (var k in propValue) {
        if (!isNode(propValue[k])) {
          return false;
        }
      }
      return true;
    default:
      return false;
  }
}

// Equivalent of `typeof` but with special handling for array and regexp.
function getPropType(propValue) {
  var propType = typeof propValue;
  if (Array.isArray(propValue)) {
    return 'array';
  }
  if (propValue instanceof RegExp) {
    // Old webkits (at least until Android 4.0) return 'function' rather than
    // 'object' for typeof a RegExp. We'll normalize this here so that /bla/
    // passes PropTypes.object.
    return 'object';
  }
  return propType;
}

// This handles more types than `getPropType`. Only used for error messages.
// See `createPrimitiveTypeChecker`.
function getPreciseType(propValue) {
  var propType = getPropType(propValue);
  if (propType === 'object') {
    if (propValue instanceof Date) {
      return 'date';
    } else if (propValue instanceof RegExp) {
      return 'regexp';
    }
  }
  return propType;
}

module.exports = ReactPropTypes;

},{"./ReactElement":164,"./ReactPropTypeLocationNames":183,"./deprecated":227,"./emptyFunction":228}],186:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactPutListenerQueue
 */

"use strict";

var PooledClass = require("./PooledClass");
var ReactBrowserEventEmitter = require("./ReactBrowserEventEmitter");

var assign = require("./Object.assign");

function ReactPutListenerQueue() {
  this.listenersToPut = [];
}

assign(ReactPutListenerQueue.prototype, {
  enqueuePutListener: function(rootNodeID, propKey, propValue) {
    this.listenersToPut.push({
      rootNodeID: rootNodeID,
      propKey: propKey,
      propValue: propValue
    });
  },

  putListeners: function() {
    for (var i = 0; i < this.listenersToPut.length; i++) {
      var listenerToPut = this.listenersToPut[i];
      ReactBrowserEventEmitter.putListener(
        listenerToPut.rootNodeID,
        listenerToPut.propKey,
        listenerToPut.propValue
      );
    }
  },

  reset: function() {
    this.listenersToPut.length = 0;
  },

  destructor: function() {
    this.reset();
  }
});

PooledClass.addPoolingTo(ReactPutListenerQueue);

module.exports = ReactPutListenerQueue;

},{"./Object.assign":135,"./PooledClass":136,"./ReactBrowserEventEmitter":139}],187:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactReconcileTransaction
 * @typechecks static-only
 */

"use strict";

var CallbackQueue = require("./CallbackQueue");
var PooledClass = require("./PooledClass");
var ReactBrowserEventEmitter = require("./ReactBrowserEventEmitter");
var ReactInputSelection = require("./ReactInputSelection");
var ReactPutListenerQueue = require("./ReactPutListenerQueue");
var Transaction = require("./Transaction");

var assign = require("./Object.assign");

/**
 * Ensures that, when possible, the selection range (currently selected text
 * input) is not disturbed by performing the transaction.
 */
var SELECTION_RESTORATION = {
  /**
   * @return {Selection} Selection information.
   */
  initialize: ReactInputSelection.getSelectionInformation,
  /**
   * @param {Selection} sel Selection information returned from `initialize`.
   */
  close: ReactInputSelection.restoreSelection
};

/**
 * Suppresses events (blur/focus) that could be inadvertently dispatched due to
 * high level DOM manipulations (like temporarily removing a text input from the
 * DOM).
 */
var EVENT_SUPPRESSION = {
  /**
   * @return {boolean} The enabled status of `ReactBrowserEventEmitter` before
   * the reconciliation.
   */
  initialize: function() {
    var currentlyEnabled = ReactBrowserEventEmitter.isEnabled();
    ReactBrowserEventEmitter.setEnabled(false);
    return currentlyEnabled;
  },

  /**
   * @param {boolean} previouslyEnabled Enabled status of
   *   `ReactBrowserEventEmitter` before the reconciliation occured. `close`
   *   restores the previous value.
   */
  close: function(previouslyEnabled) {
    ReactBrowserEventEmitter.setEnabled(previouslyEnabled);
  }
};

/**
 * Provides a queue for collecting `componentDidMount` and
 * `componentDidUpdate` callbacks during the the transaction.
 */
var ON_DOM_READY_QUEUEING = {
  /**
   * Initializes the internal `onDOMReady` queue.
   */
  initialize: function() {
    this.reactMountReady.reset();
  },

  /**
   * After DOM is flushed, invoke all registered `onDOMReady` callbacks.
   */
  close: function() {
    this.reactMountReady.notifyAll();
  }
};

var PUT_LISTENER_QUEUEING = {
  initialize: function() {
    this.putListenerQueue.reset();
  },

  close: function() {
    this.putListenerQueue.putListeners();
  }
};

/**
 * Executed within the scope of the `Transaction` instance. Consider these as
 * being member methods, but with an implied ordering while being isolated from
 * each other.
 */
var TRANSACTION_WRAPPERS = [
  PUT_LISTENER_QUEUEING,
  SELECTION_RESTORATION,
  EVENT_SUPPRESSION,
  ON_DOM_READY_QUEUEING
];

/**
 * Currently:
 * - The order that these are listed in the transaction is critical:
 * - Suppresses events.
 * - Restores selection range.
 *
 * Future:
 * - Restore document/overflow scroll positions that were unintentionally
 *   modified via DOM insertions above the top viewport boundary.
 * - Implement/integrate with customized constraint based layout system and keep
 *   track of which dimensions must be remeasured.
 *
 * @class ReactReconcileTransaction
 */
function ReactReconcileTransaction() {
  this.reinitializeTransaction();
  // Only server-side rendering really needs this option (see
  // `ReactServerRendering`), but server-side uses
  // `ReactServerRenderingTransaction` instead. This option is here so that it's
  // accessible and defaults to false when `ReactDOMComponent` and
  // `ReactTextComponent` checks it in `mountComponent`.`
  this.renderToStaticMarkup = false;
  this.reactMountReady = CallbackQueue.getPooled(null);
  this.putListenerQueue = ReactPutListenerQueue.getPooled();
}

var Mixin = {
  /**
   * @see Transaction
   * @abstract
   * @final
   * @return {array<object>} List of operation wrap proceedures.
   *   TODO: convert to array<TransactionWrapper>
   */
  getTransactionWrappers: function() {
    return TRANSACTION_WRAPPERS;
  },

  /**
   * @return {object} The queue to collect `onDOMReady` callbacks with.
   */
  getReactMountReady: function() {
    return this.reactMountReady;
  },

  getPutListenerQueue: function() {
    return this.putListenerQueue;
  },

  /**
   * `PooledClass` looks for this, and will invoke this before allowing this
   * instance to be resused.
   */
  destructor: function() {
    CallbackQueue.release(this.reactMountReady);
    this.reactMountReady = null;

    ReactPutListenerQueue.release(this.putListenerQueue);
    this.putListenerQueue = null;
  }
};


assign(ReactReconcileTransaction.prototype, Transaction.Mixin, Mixin);

PooledClass.addPoolingTo(ReactReconcileTransaction);

module.exports = ReactReconcileTransaction;

},{"./CallbackQueue":113,"./Object.assign":135,"./PooledClass":136,"./ReactBrowserEventEmitter":139,"./ReactInputSelection":171,"./ReactPutListenerQueue":186,"./Transaction":214}],188:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactRootIndex
 * @typechecks
 */

"use strict";

var ReactRootIndexInjection = {
  /**
   * @param {function} _createReactRootIndex
   */
  injectCreateReactRootIndex: function(_createReactRootIndex) {
    ReactRootIndex.createReactRootIndex = _createReactRootIndex;
  }
};

var ReactRootIndex = {
  createReactRootIndex: null,
  injection: ReactRootIndexInjection
};

module.exports = ReactRootIndex;

},{}],189:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @typechecks static-only
 * @providesModule ReactServerRendering
 */
"use strict";

var ReactElement = require("./ReactElement");
var ReactInstanceHandles = require("./ReactInstanceHandles");
var ReactMarkupChecksum = require("./ReactMarkupChecksum");
var ReactServerRenderingTransaction =
  require("./ReactServerRenderingTransaction");

var instantiateReactComponent = require("./instantiateReactComponent");
var invariant = require("./invariant");

/**
 * @param {ReactElement} element
 * @return {string} the HTML markup
 */
function renderToString(element) {
  ("production" !== process.env.NODE_ENV ? invariant(
    ReactElement.isValidElement(element),
    'renderToString(): You must pass a valid ReactElement.'
  ) : invariant(ReactElement.isValidElement(element)));

  var transaction;
  try {
    var id = ReactInstanceHandles.createReactRootID();
    transaction = ReactServerRenderingTransaction.getPooled(false);

    return transaction.perform(function() {
      var componentInstance = instantiateReactComponent(element, null);
      var markup = componentInstance.mountComponent(id, transaction, 0);
      return ReactMarkupChecksum.addChecksumToMarkup(markup);
    }, null);
  } finally {
    ReactServerRenderingTransaction.release(transaction);
  }
}

/**
 * @param {ReactElement} element
 * @return {string} the HTML markup, without the extra React ID and checksum
 * (for generating static pages)
 */
function renderToStaticMarkup(element) {
  ("production" !== process.env.NODE_ENV ? invariant(
    ReactElement.isValidElement(element),
    'renderToStaticMarkup(): You must pass a valid ReactElement.'
  ) : invariant(ReactElement.isValidElement(element)));

  var transaction;
  try {
    var id = ReactInstanceHandles.createReactRootID();
    transaction = ReactServerRenderingTransaction.getPooled(true);

    return transaction.perform(function() {
      var componentInstance = instantiateReactComponent(element, null);
      return componentInstance.mountComponent(id, transaction, 0);
    }, null);
  } finally {
    ReactServerRenderingTransaction.release(transaction);
  }
}

module.exports = {
  renderToString: renderToString,
  renderToStaticMarkup: renderToStaticMarkup
};

}).call(this,require('_process'))
},{"./ReactElement":164,"./ReactInstanceHandles":172,"./ReactMarkupChecksum":175,"./ReactServerRenderingTransaction":190,"./instantiateReactComponent":246,"./invariant":247,"_process":91}],190:[function(require,module,exports){
/**
 * Copyright 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactServerRenderingTransaction
 * @typechecks
 */

"use strict";

var PooledClass = require("./PooledClass");
var CallbackQueue = require("./CallbackQueue");
var ReactPutListenerQueue = require("./ReactPutListenerQueue");
var Transaction = require("./Transaction");

var assign = require("./Object.assign");
var emptyFunction = require("./emptyFunction");

/**
 * Provides a `CallbackQueue` queue for collecting `onDOMReady` callbacks
 * during the performing of the transaction.
 */
var ON_DOM_READY_QUEUEING = {
  /**
   * Initializes the internal `onDOMReady` queue.
   */
  initialize: function() {
    this.reactMountReady.reset();
  },

  close: emptyFunction
};

var PUT_LISTENER_QUEUEING = {
  initialize: function() {
    this.putListenerQueue.reset();
  },

  close: emptyFunction
};

/**
 * Executed within the scope of the `Transaction` instance. Consider these as
 * being member methods, but with an implied ordering while being isolated from
 * each other.
 */
var TRANSACTION_WRAPPERS = [
  PUT_LISTENER_QUEUEING,
  ON_DOM_READY_QUEUEING
];

/**
 * @class ReactServerRenderingTransaction
 * @param {boolean} renderToStaticMarkup
 */
function ReactServerRenderingTransaction(renderToStaticMarkup) {
  this.reinitializeTransaction();
  this.renderToStaticMarkup = renderToStaticMarkup;
  this.reactMountReady = CallbackQueue.getPooled(null);
  this.putListenerQueue = ReactPutListenerQueue.getPooled();
}

var Mixin = {
  /**
   * @see Transaction
   * @abstract
   * @final
   * @return {array} Empty list of operation wrap proceedures.
   */
  getTransactionWrappers: function() {
    return TRANSACTION_WRAPPERS;
  },

  /**
   * @return {object} The queue to collect `onDOMReady` callbacks with.
   */
  getReactMountReady: function() {
    return this.reactMountReady;
  },

  getPutListenerQueue: function() {
    return this.putListenerQueue;
  },

  /**
   * `PooledClass` looks for this, and will invoke this before allowing this
   * instance to be resused.
   */
  destructor: function() {
    CallbackQueue.release(this.reactMountReady);
    this.reactMountReady = null;

    ReactPutListenerQueue.release(this.putListenerQueue);
    this.putListenerQueue = null;
  }
};


assign(
  ReactServerRenderingTransaction.prototype,
  Transaction.Mixin,
  Mixin
);

PooledClass.addPoolingTo(ReactServerRenderingTransaction);

module.exports = ReactServerRenderingTransaction;

},{"./CallbackQueue":113,"./Object.assign":135,"./PooledClass":136,"./ReactPutListenerQueue":186,"./Transaction":214,"./emptyFunction":228}],191:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactStateSetters
 */

"use strict";

var ReactStateSetters = {
  /**
   * Returns a function that calls the provided function, and uses the result
   * of that to set the component's state.
   *
   * @param {ReactCompositeComponent} component
   * @param {function} funcReturningState Returned callback uses this to
   *                                      determine how to update state.
   * @return {function} callback that when invoked uses funcReturningState to
   *                    determined the object literal to setState.
   */
  createStateSetter: function(component, funcReturningState) {
    return function(a, b, c, d, e, f) {
      var partialState = funcReturningState.call(component, a, b, c, d, e, f);
      if (partialState) {
        component.setState(partialState);
      }
    };
  },

  /**
   * Returns a single-argument callback that can be used to update a single
   * key in the component's state.
   *
   * Note: this is memoized function, which makes it inexpensive to call.
   *
   * @param {ReactCompositeComponent} component
   * @param {string} key The key in the state that you should update.
   * @return {function} callback of 1 argument which calls setState() with
   *                    the provided keyName and callback argument.
   */
  createStateKeySetter: function(component, key) {
    // Memoize the setters.
    var cache = component.__keySetters || (component.__keySetters = {});
    return cache[key] || (cache[key] = createStateKeySetter(component, key));
  }
};

function createStateKeySetter(component, key) {
  // Partial state is allocated outside of the function closure so it can be
  // reused with every call, avoiding memory allocation when this function
  // is called.
  var partialState = {};
  return function stateKeySetter(value) {
    partialState[key] = value;
    component.setState(partialState);
  };
}

ReactStateSetters.Mixin = {
  /**
   * Returns a function that calls the provided function, and uses the result
   * of that to set the component's state.
   *
   * For example, these statements are equivalent:
   *
   *   this.setState({x: 1});
   *   this.createStateSetter(function(xValue) {
   *     return {x: xValue};
   *   })(1);
   *
   * @param {function} funcReturningState Returned callback uses this to
   *                                      determine how to update state.
   * @return {function} callback that when invoked uses funcReturningState to
   *                    determined the object literal to setState.
   */
  createStateSetter: function(funcReturningState) {
    return ReactStateSetters.createStateSetter(this, funcReturningState);
  },

  /**
   * Returns a single-argument callback that can be used to update a single
   * key in the component's state.
   *
   * For example, these statements are equivalent:
   *
   *   this.setState({x: 1});
   *   this.createStateKeySetter('x')(1);
   *
   * Note: this is memoized function, which makes it inexpensive to call.
   *
   * @param {string} key The key in the state that you should update.
   * @return {function} callback of 1 argument which calls setState() with
   *                    the provided keyName and callback argument.
   */
  createStateKeySetter: function(key) {
    return ReactStateSetters.createStateKeySetter(this, key);
  }
};

module.exports = ReactStateSetters;

},{}],192:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactTestUtils
 */

"use strict";

var EventConstants = require("./EventConstants");
var EventPluginHub = require("./EventPluginHub");
var EventPropagators = require("./EventPropagators");
var React = require("./React");
var ReactElement = require("./ReactElement");
var ReactBrowserEventEmitter = require("./ReactBrowserEventEmitter");
var ReactMount = require("./ReactMount");
var ReactTextComponent = require("./ReactTextComponent");
var ReactUpdates = require("./ReactUpdates");
var SyntheticEvent = require("./SyntheticEvent");

var assign = require("./Object.assign");

var topLevelTypes = EventConstants.topLevelTypes;

function Event(suffix) {}

/**
 * @class ReactTestUtils
 */

/**
 * Todo: Support the entire DOM.scry query syntax. For now, these simple
 * utilities will suffice for testing purposes.
 * @lends ReactTestUtils
 */
var ReactTestUtils = {
  renderIntoDocument: function(instance) {
    var div = document.createElement('div');
    // None of our tests actually require attaching the container to the
    // DOM, and doing so creates a mess that we rely on test isolation to
    // clean up, so we're going to stop honoring the name of this method
    // (and probably rename it eventually) if no problems arise.
    // document.documentElement.appendChild(div);
    return React.render(instance, div);
  },

  isElement: function(element) {
    return ReactElement.isValidElement(element);
  },

  isElementOfType: function(inst, convenienceConstructor) {
    return (
      ReactElement.isValidElement(inst) &&
      inst.type === convenienceConstructor.type
    );
  },

  isDOMComponent: function(inst) {
    return !!(inst && inst.mountComponent && inst.tagName);
  },

  isDOMComponentElement: function(inst) {
    return !!(inst &&
              ReactElement.isValidElement(inst) &&
              !!inst.tagName);
  },

  isCompositeComponent: function(inst) {
    return typeof inst.render === 'function' &&
           typeof inst.setState === 'function';
  },

  isCompositeComponentWithType: function(inst, type) {
    return !!(ReactTestUtils.isCompositeComponent(inst) &&
             (inst.constructor === type.type));
  },

  isCompositeComponentElement: function(inst) {
    if (!ReactElement.isValidElement(inst)) {
      return false;
    }
    // We check the prototype of the type that will get mounted, not the
    // instance itself. This is a future proof way of duck typing.
    var prototype = inst.type.prototype;
    return (
      typeof prototype.render === 'function' &&
      typeof prototype.setState === 'function'
    );
  },

  isCompositeComponentElementWithType: function(inst, type) {
    return !!(ReactTestUtils.isCompositeComponentElement(inst) &&
             (inst.constructor === type));
  },

  isTextComponent: function(inst) {
    return inst instanceof ReactTextComponent.type;
  },

  findAllInRenderedTree: function(inst, test) {
    if (!inst) {
      return [];
    }
    var ret = test(inst) ? [inst] : [];
    if (ReactTestUtils.isDOMComponent(inst)) {
      var renderedChildren = inst._renderedChildren;
      var key;
      for (key in renderedChildren) {
        if (!renderedChildren.hasOwnProperty(key)) {
          continue;
        }
        ret = ret.concat(
          ReactTestUtils.findAllInRenderedTree(renderedChildren[key], test)
        );
      }
    } else if (ReactTestUtils.isCompositeComponent(inst)) {
      ret = ret.concat(
        ReactTestUtils.findAllInRenderedTree(inst._renderedComponent, test)
      );
    }
    return ret;
  },

  /**
   * Finds all instance of components in the rendered tree that are DOM
   * components with the class name matching `className`.
   * @return an array of all the matches.
   */
  scryRenderedDOMComponentsWithClass: function(root, className) {
    return ReactTestUtils.findAllInRenderedTree(root, function(inst) {
      var instClassName = inst.props.className;
      return ReactTestUtils.isDOMComponent(inst) && (
        instClassName &&
        (' ' + instClassName + ' ').indexOf(' ' + className + ' ') !== -1
      );
    });
  },

  /**
   * Like scryRenderedDOMComponentsWithClass but expects there to be one result,
   * and returns that one result, or throws exception if there is any other
   * number of matches besides one.
   * @return {!ReactDOMComponent} The one match.
   */
  findRenderedDOMComponentWithClass: function(root, className) {
    var all =
      ReactTestUtils.scryRenderedDOMComponentsWithClass(root, className);
    if (all.length !== 1) {
      throw new Error('Did not find exactly one match for class:' + className);
    }
    return all[0];
  },


  /**
   * Finds all instance of components in the rendered tree that are DOM
   * components with the tag name matching `tagName`.
   * @return an array of all the matches.
   */
  scryRenderedDOMComponentsWithTag: function(root, tagName) {
    return ReactTestUtils.findAllInRenderedTree(root, function(inst) {
      return ReactTestUtils.isDOMComponent(inst) &&
            inst.tagName === tagName.toUpperCase();
    });
  },

  /**
   * Like scryRenderedDOMComponentsWithTag but expects there to be one result,
   * and returns that one result, or throws exception if there is any other
   * number of matches besides one.
   * @return {!ReactDOMComponent} The one match.
   */
  findRenderedDOMComponentWithTag: function(root, tagName) {
    var all = ReactTestUtils.scryRenderedDOMComponentsWithTag(root, tagName);
    if (all.length !== 1) {
      throw new Error('Did not find exactly one match for tag:' + tagName);
    }
    return all[0];
  },


  /**
   * Finds all instances of components with type equal to `componentType`.
   * @return an array of all the matches.
   */
  scryRenderedComponentsWithType: function(root, componentType) {
    return ReactTestUtils.findAllInRenderedTree(root, function(inst) {
      return ReactTestUtils.isCompositeComponentWithType(
        inst,
        componentType
      );
    });
  },

  /**
   * Same as `scryRenderedComponentsWithType` but expects there to be one result
   * and returns that one result, or throws exception if there is any other
   * number of matches besides one.
   * @return {!ReactComponent} The one match.
   */
  findRenderedComponentWithType: function(root, componentType) {
    var all = ReactTestUtils.scryRenderedComponentsWithType(
      root,
      componentType
    );
    if (all.length !== 1) {
      throw new Error(
        'Did not find exactly one match for componentType:' + componentType
      );
    }
    return all[0];
  },

  /**
   * Pass a mocked component module to this method to augment it with
   * useful methods that allow it to be used as a dummy React component.
   * Instead of rendering as usual, the component will become a simple
   * <div> containing any provided children.
   *
   * @param {object} module the mock function object exported from a
   *                        module that defines the component to be mocked
   * @param {?string} mockTagName optional dummy root tag name to return
   *                              from render method (overrides
   *                              module.mockTagName if provided)
   * @return {object} the ReactTestUtils object (for chaining)
   */
  mockComponent: function(module, mockTagName) {
    mockTagName = mockTagName || module.mockTagName || "div";

    var ConvenienceConstructor = React.createClass({displayName: "ConvenienceConstructor",
      render: function() {
        return React.createElement(
          mockTagName,
          null,
          this.props.children
        );
      }
    });

    module.mockImplementation(ConvenienceConstructor);

    module.type = ConvenienceConstructor.type;
    module.isReactLegacyFactory = true;

    return this;
  },

  /**
   * Simulates a top level event being dispatched from a raw event that occured
   * on an `Element` node.
   * @param topLevelType {Object} A type from `EventConstants.topLevelTypes`
   * @param {!Element} node The dom to simulate an event occurring on.
   * @param {?Event} fakeNativeEvent Fake native event to use in SyntheticEvent.
   */
  simulateNativeEventOnNode: function(topLevelType, node, fakeNativeEvent) {
    fakeNativeEvent.target = node;
    ReactBrowserEventEmitter.ReactEventListener.dispatchEvent(
      topLevelType,
      fakeNativeEvent
    );
  },

  /**
   * Simulates a top level event being dispatched from a raw event that occured
   * on the `ReactDOMComponent` `comp`.
   * @param topLevelType {Object} A type from `EventConstants.topLevelTypes`.
   * @param comp {!ReactDOMComponent}
   * @param {?Event} fakeNativeEvent Fake native event to use in SyntheticEvent.
   */
  simulateNativeEventOnDOMComponent: function(
      topLevelType,
      comp,
      fakeNativeEvent) {
    ReactTestUtils.simulateNativeEventOnNode(
      topLevelType,
      comp.getDOMNode(),
      fakeNativeEvent
    );
  },

  nativeTouchData: function(x, y) {
    return {
      touches: [
        {pageX: x, pageY: y}
      ]
    };
  },

  Simulate: null,
  SimulateNative: {}
};

/**
 * Exports:
 *
 * - `ReactTestUtils.Simulate.click(Element/ReactDOMComponent)`
 * - `ReactTestUtils.Simulate.mouseMove(Element/ReactDOMComponent)`
 * - `ReactTestUtils.Simulate.change(Element/ReactDOMComponent)`
 * - ... (All keys from event plugin `eventTypes` objects)
 */
function makeSimulator(eventType) {
  return function(domComponentOrNode, eventData) {
    var node;
    if (ReactTestUtils.isDOMComponent(domComponentOrNode)) {
      node = domComponentOrNode.getDOMNode();
    } else if (domComponentOrNode.tagName) {
      node = domComponentOrNode;
    }

    var fakeNativeEvent = new Event();
    fakeNativeEvent.target = node;
    // We don't use SyntheticEvent.getPooled in order to not have to worry about
    // properly destroying any properties assigned from `eventData` upon release
    var event = new SyntheticEvent(
      ReactBrowserEventEmitter.eventNameDispatchConfigs[eventType],
      ReactMount.getID(node),
      fakeNativeEvent
    );
    assign(event, eventData);
    EventPropagators.accumulateTwoPhaseDispatches(event);

    ReactUpdates.batchedUpdates(function() {
      EventPluginHub.enqueueEvents(event);
      EventPluginHub.processEventQueue();
    });
  };
}

function buildSimulators() {
  ReactTestUtils.Simulate = {};

  var eventType;
  for (eventType in ReactBrowserEventEmitter.eventNameDispatchConfigs) {
    /**
     * @param {!Element || ReactDOMComponent} domComponentOrNode
     * @param {?object} eventData Fake event data to use in SyntheticEvent.
     */
    ReactTestUtils.Simulate[eventType] = makeSimulator(eventType);
  }
}

// Rebuild ReactTestUtils.Simulate whenever event plugins are injected
var oldInjectEventPluginOrder = EventPluginHub.injection.injectEventPluginOrder;
EventPluginHub.injection.injectEventPluginOrder = function() {
  oldInjectEventPluginOrder.apply(this, arguments);
  buildSimulators();
};
var oldInjectEventPlugins = EventPluginHub.injection.injectEventPluginsByName;
EventPluginHub.injection.injectEventPluginsByName = function() {
  oldInjectEventPlugins.apply(this, arguments);
  buildSimulators();
};

buildSimulators();

/**
 * Exports:
 *
 * - `ReactTestUtils.SimulateNative.click(Element/ReactDOMComponent)`
 * - `ReactTestUtils.SimulateNative.mouseMove(Element/ReactDOMComponent)`
 * - `ReactTestUtils.SimulateNative.mouseIn/ReactDOMComponent)`
 * - `ReactTestUtils.SimulateNative.mouseOut(Element/ReactDOMComponent)`
 * - ... (All keys from `EventConstants.topLevelTypes`)
 *
 * Note: Top level event types are a subset of the entire set of handler types
 * (which include a broader set of "synthetic" events). For example, onDragDone
 * is a synthetic event. Except when testing an event plugin or React's event
 * handling code specifically, you probably want to use ReactTestUtils.Simulate
 * to dispatch synthetic events.
 */

function makeNativeSimulator(eventType) {
  return function(domComponentOrNode, nativeEventData) {
    var fakeNativeEvent = new Event(eventType);
    assign(fakeNativeEvent, nativeEventData);
    if (ReactTestUtils.isDOMComponent(domComponentOrNode)) {
      ReactTestUtils.simulateNativeEventOnDOMComponent(
        eventType,
        domComponentOrNode,
        fakeNativeEvent
      );
    } else if (!!domComponentOrNode.tagName) {
      // Will allow on actual dom nodes.
      ReactTestUtils.simulateNativeEventOnNode(
        eventType,
        domComponentOrNode,
        fakeNativeEvent
      );
    }
  };
}

var eventType;
for (eventType in topLevelTypes) {
  // Event type is stored as 'topClick' - we transform that to 'click'
  var convenienceName = eventType.indexOf('top') === 0 ?
    eventType.charAt(3).toLowerCase() + eventType.substr(4) : eventType;
  /**
   * @param {!Element || ReactDOMComponent} domComponentOrNode
   * @param {?Event} nativeEventData Fake native event to use in SyntheticEvent.
   */
  ReactTestUtils.SimulateNative[convenienceName] =
    makeNativeSimulator(eventType);
}

module.exports = ReactTestUtils;

},{"./EventConstants":123,"./EventPluginHub":125,"./EventPropagators":128,"./Object.assign":135,"./React":137,"./ReactBrowserEventEmitter":139,"./ReactElement":164,"./ReactMount":176,"./ReactTextComponent":193,"./ReactUpdates":197,"./SyntheticEvent":206}],193:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactTextComponent
 * @typechecks static-only
 */

"use strict";

var DOMPropertyOperations = require("./DOMPropertyOperations");
var ReactComponent = require("./ReactComponent");
var ReactElement = require("./ReactElement");

var assign = require("./Object.assign");
var escapeTextForBrowser = require("./escapeTextForBrowser");

/**
 * Text nodes violate a couple assumptions that React makes about components:
 *
 *  - When mounting text into the DOM, adjacent text nodes are merged.
 *  - Text nodes cannot be assigned a React root ID.
 *
 * This component is used to wrap strings in elements so that they can undergo
 * the same reconciliation that is applied to elements.
 *
 * TODO: Investigate representing React components in the DOM with text nodes.
 *
 * @class ReactTextComponent
 * @extends ReactComponent
 * @internal
 */
var ReactTextComponent = function(props) {
  // This constructor and it's argument is currently used by mocks.
};

assign(ReactTextComponent.prototype, ReactComponent.Mixin, {

  /**
   * Creates the markup for this text node. This node is not intended to have
   * any features besides containing text content.
   *
   * @param {string} rootID DOM ID of the root node.
   * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction
   * @param {number} mountDepth number of components in the owner hierarchy
   * @return {string} Markup for this text node.
   * @internal
   */
  mountComponent: function(rootID, transaction, mountDepth) {
    ReactComponent.Mixin.mountComponent.call(
      this,
      rootID,
      transaction,
      mountDepth
    );

    var escapedText = escapeTextForBrowser(this.props);

    if (transaction.renderToStaticMarkup) {
      // Normally we'd wrap this in a `span` for the reasons stated above, but
      // since this is a situation where React won't take over (static pages),
      // we can simply return the text as it is.
      return escapedText;
    }

    return (
      '<span ' + DOMPropertyOperations.createMarkupForID(rootID) + '>' +
        escapedText +
      '</span>'
    );
  },

  /**
   * Updates this component by updating the text content.
   *
   * @param {object} nextComponent Contains the next text content.
   * @param {ReactReconcileTransaction} transaction
   * @internal
   */
  receiveComponent: function(nextComponent, transaction) {
    var nextProps = nextComponent.props;
    if (nextProps !== this.props) {
      this.props = nextProps;
      ReactComponent.BackendIDOperations.updateTextContentByID(
        this._rootNodeID,
        nextProps
      );
    }
  }

});

var ReactTextComponentFactory = function(text) {
  // Bypass validation and configuration
  return new ReactElement(ReactTextComponent, null, null, null, null, text);
};

ReactTextComponentFactory.type = ReactTextComponent;

module.exports = ReactTextComponentFactory;

},{"./DOMPropertyOperations":119,"./Object.assign":135,"./ReactComponent":143,"./ReactElement":164,"./escapeTextForBrowser":230}],194:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @typechecks static-only
 * @providesModule ReactTransitionChildMapping
 */

"use strict";

var ReactChildren = require("./ReactChildren");

var ReactTransitionChildMapping = {
  /**
   * Given `this.props.children`, return an object mapping key to child. Just
   * simple syntactic sugar around ReactChildren.map().
   *
   * @param {*} children `this.props.children`
   * @return {object} Mapping of key to child
   */
  getChildMapping: function(children) {
    return ReactChildren.map(children, function(child) {
      return child;
    });
  },

  /**
   * When you're adding or removing children some may be added or removed in the
   * same render pass. We want to show *both* since we want to simultaneously
   * animate elements in and out. This function takes a previous set of keys
   * and a new set of keys and merges them with its best guess of the correct
   * ordering. In the future we may expose some of the utilities in
   * ReactMultiChild to make this easy, but for now React itself does not
   * directly have this concept of the union of prevChildren and nextChildren
   * so we implement it here.
   *
   * @param {object} prev prev children as returned from
   * `ReactTransitionChildMapping.getChildMapping()`.
   * @param {object} next next children as returned from
   * `ReactTransitionChildMapping.getChildMapping()`.
   * @return {object} a key set that contains all keys in `prev` and all keys
   * in `next` in a reasonable order.
   */
  mergeChildMappings: function(prev, next) {
    prev = prev || {};
    next = next || {};

    function getValueForKey(key) {
      if (next.hasOwnProperty(key)) {
        return next[key];
      } else {
        return prev[key];
      }
    }

    // For each key of `next`, the list of keys to insert before that key in
    // the combined list
    var nextKeysPending = {};

    var pendingKeys = [];
    for (var prevKey in prev) {
      if (next.hasOwnProperty(prevKey)) {
        if (pendingKeys.length) {
          nextKeysPending[prevKey] = pendingKeys;
          pendingKeys = [];
        }
      } else {
        pendingKeys.push(prevKey);
      }
    }

    var i;
    var childMapping = {};
    for (var nextKey in next) {
      if (nextKeysPending.hasOwnProperty(nextKey)) {
        for (i = 0; i < nextKeysPending[nextKey].length; i++) {
          var pendingNextKey = nextKeysPending[nextKey][i];
          childMapping[nextKeysPending[nextKey][i]] = getValueForKey(
            pendingNextKey
          );
        }
      }
      childMapping[nextKey] = getValueForKey(nextKey);
    }

    // Finally, add the keys which didn't appear before any key in `next`
    for (i = 0; i < pendingKeys.length; i++) {
      childMapping[pendingKeys[i]] = getValueForKey(pendingKeys[i]);
    }

    return childMapping;
  }
};

module.exports = ReactTransitionChildMapping;

},{"./ReactChildren":142}],195:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactTransitionEvents
 */

"use strict";

var ExecutionEnvironment = require("./ExecutionEnvironment");

/**
 * EVENT_NAME_MAP is used to determine which event fired when a
 * transition/animation ends, based on the style property used to
 * define that event.
 */
var EVENT_NAME_MAP = {
  transitionend: {
    'transition': 'transitionend',
    'WebkitTransition': 'webkitTransitionEnd',
    'MozTransition': 'mozTransitionEnd',
    'OTransition': 'oTransitionEnd',
    'msTransition': 'MSTransitionEnd'
  },

  animationend: {
    'animation': 'animationend',
    'WebkitAnimation': 'webkitAnimationEnd',
    'MozAnimation': 'mozAnimationEnd',
    'OAnimation': 'oAnimationEnd',
    'msAnimation': 'MSAnimationEnd'
  }
};

var endEvents = [];

function detectEvents() {
  var testEl = document.createElement('div');
  var style = testEl.style;

  // On some platforms, in particular some releases of Android 4.x,
  // the un-prefixed "animation" and "transition" properties are defined on the
  // style object but the events that fire will still be prefixed, so we need
  // to check if the un-prefixed events are useable, and if not remove them
  // from the map
  if (!('AnimationEvent' in window)) {
    delete EVENT_NAME_MAP.animationend.animation;
  }

  if (!('TransitionEvent' in window)) {
    delete EVENT_NAME_MAP.transitionend.transition;
  }

  for (var baseEventName in EVENT_NAME_MAP) {
    var baseEvents = EVENT_NAME_MAP[baseEventName];
    for (var styleName in baseEvents) {
      if (styleName in style) {
        endEvents.push(baseEvents[styleName]);
        break;
      }
    }
  }
}

if (ExecutionEnvironment.canUseDOM) {
  detectEvents();
}

// We use the raw {add|remove}EventListener() call because EventListener
// does not know how to remove event listeners and we really should
// clean up. Also, these events are not triggered in older browsers
// so we should be A-OK here.

function addEventListener(node, eventName, eventListener) {
  node.addEventListener(eventName, eventListener, false);
}

function removeEventListener(node, eventName, eventListener) {
  node.removeEventListener(eventName, eventListener, false);
}

var ReactTransitionEvents = {
  addEndEventListener: function(node, eventListener) {
    if (endEvents.length === 0) {
      // If CSS transitions are not supported, trigger an "end animation"
      // event immediately.
      window.setTimeout(eventListener, 0);
      return;
    }
    endEvents.forEach(function(endEvent) {
      addEventListener(node, endEvent, eventListener);
    });
  },

  removeEndEventListener: function(node, eventListener) {
    if (endEvents.length === 0) {
      return;
    }
    endEvents.forEach(function(endEvent) {
      removeEventListener(node, endEvent, eventListener);
    });
  }
};

module.exports = ReactTransitionEvents;

},{"./ExecutionEnvironment":129}],196:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactTransitionGroup
 */

"use strict";

var React = require("./React");
var ReactTransitionChildMapping = require("./ReactTransitionChildMapping");

var assign = require("./Object.assign");
var cloneWithProps = require("./cloneWithProps");
var emptyFunction = require("./emptyFunction");

var ReactTransitionGroup = React.createClass({
  displayName: 'ReactTransitionGroup',

  propTypes: {
    component: React.PropTypes.any,
    childFactory: React.PropTypes.func
  },

  getDefaultProps: function() {
    return {
      component: 'span',
      childFactory: emptyFunction.thatReturnsArgument
    };
  },

  getInitialState: function() {
    return {
      children: ReactTransitionChildMapping.getChildMapping(this.props.children)
    };
  },

  componentWillReceiveProps: function(nextProps) {
    var nextChildMapping = ReactTransitionChildMapping.getChildMapping(
      nextProps.children
    );
    var prevChildMapping = this.state.children;

    this.setState({
      children: ReactTransitionChildMapping.mergeChildMappings(
        prevChildMapping,
        nextChildMapping
      )
    });

    var key;

    for (key in nextChildMapping) {
      var hasPrev = prevChildMapping && prevChildMapping.hasOwnProperty(key);
      if (nextChildMapping[key] && !hasPrev &&
          !this.currentlyTransitioningKeys[key]) {
        this.keysToEnter.push(key);
      }
    }

    for (key in prevChildMapping) {
      var hasNext = nextChildMapping && nextChildMapping.hasOwnProperty(key);
      if (prevChildMapping[key] && !hasNext &&
          !this.currentlyTransitioningKeys[key]) {
        this.keysToLeave.push(key);
      }
    }

    // If we want to someday check for reordering, we could do it here.
  },

  componentWillMount: function() {
    this.currentlyTransitioningKeys = {};
    this.keysToEnter = [];
    this.keysToLeave = [];
  },

  componentDidUpdate: function() {
    var keysToEnter = this.keysToEnter;
    this.keysToEnter = [];
    keysToEnter.forEach(this.performEnter);

    var keysToLeave = this.keysToLeave;
    this.keysToLeave = [];
    keysToLeave.forEach(this.performLeave);
  },

  performEnter: function(key) {
    this.currentlyTransitioningKeys[key] = true;

    var component = this.refs[key];

    if (component.componentWillEnter) {
      component.componentWillEnter(
        this._handleDoneEntering.bind(this, key)
      );
    } else {
      this._handleDoneEntering(key);
    }
  },

  _handleDoneEntering: function(key) {
    var component = this.refs[key];
    if (component.componentDidEnter) {
      component.componentDidEnter();
    }

    delete this.currentlyTransitioningKeys[key];

    var currentChildMapping = ReactTransitionChildMapping.getChildMapping(
      this.props.children
    );

    if (!currentChildMapping || !currentChildMapping.hasOwnProperty(key)) {
      // This was removed before it had fully entered. Remove it.
      this.performLeave(key);
    }
  },

  performLeave: function(key) {
    this.currentlyTransitioningKeys[key] = true;

    var component = this.refs[key];
    if (component.componentWillLeave) {
      component.componentWillLeave(this._handleDoneLeaving.bind(this, key));
    } else {
      // Note that this is somewhat dangerous b/c it calls setState()
      // again, effectively mutating the component before all the work
      // is done.
      this._handleDoneLeaving(key);
    }
  },

  _handleDoneLeaving: function(key) {
    var component = this.refs[key];

    if (component.componentDidLeave) {
      component.componentDidLeave();
    }

    delete this.currentlyTransitioningKeys[key];

    var currentChildMapping = ReactTransitionChildMapping.getChildMapping(
      this.props.children
    );

    if (currentChildMapping && currentChildMapping.hasOwnProperty(key)) {
      // This entered again before it fully left. Add it again.
      this.performEnter(key);
    } else {
      var newChildren = assign({}, this.state.children);
      delete newChildren[key];
      this.setState({children: newChildren});
    }
  },

  render: function() {
    // TODO: we could get rid of the need for the wrapper node
    // by cloning a single child
    var childrenToRender = {};
    for (var key in this.state.children) {
      var child = this.state.children[key];
      if (child) {
        // You may need to apply reactive updates to a child as it is leaving.
        // The normal React way to do it won't work since the child will have
        // already been removed. In case you need this behavior you can provide
        // a childFactory function to wrap every child, even the ones that are
        // leaving.
        childrenToRender[key] = cloneWithProps(
          this.props.childFactory(child),
          {ref: key}
        );
      }
    }
    return React.createElement(
      this.props.component,
      this.props,
      childrenToRender
    );
  }
});

module.exports = ReactTransitionGroup;

},{"./Object.assign":135,"./React":137,"./ReactTransitionChildMapping":194,"./cloneWithProps":220,"./emptyFunction":228}],197:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactUpdates
 */

"use strict";

var CallbackQueue = require("./CallbackQueue");
var PooledClass = require("./PooledClass");
var ReactCurrentOwner = require("./ReactCurrentOwner");
var ReactPerf = require("./ReactPerf");
var Transaction = require("./Transaction");

var assign = require("./Object.assign");
var invariant = require("./invariant");
var warning = require("./warning");

var dirtyComponents = [];
var asapCallbackQueue = CallbackQueue.getPooled();
var asapEnqueued = false;

var batchingStrategy = null;

function ensureInjected() {
  ("production" !== process.env.NODE_ENV ? invariant(
    ReactUpdates.ReactReconcileTransaction && batchingStrategy,
    'ReactUpdates: must inject a reconcile transaction class and batching ' +
    'strategy'
  ) : invariant(ReactUpdates.ReactReconcileTransaction && batchingStrategy));
}

var NESTED_UPDATES = {
  initialize: function() {
    this.dirtyComponentsLength = dirtyComponents.length;
  },
  close: function() {
    if (this.dirtyComponentsLength !== dirtyComponents.length) {
      // Additional updates were enqueued by componentDidUpdate handlers or
      // similar; before our own UPDATE_QUEUEING wrapper closes, we want to run
      // these new updates so that if A's componentDidUpdate calls setState on
      // B, B will update before the callback A's updater provided when calling
      // setState.
      dirtyComponents.splice(0, this.dirtyComponentsLength);
      flushBatchedUpdates();
    } else {
      dirtyComponents.length = 0;
    }
  }
};

var UPDATE_QUEUEING = {
  initialize: function() {
    this.callbackQueue.reset();
  },
  close: function() {
    this.callbackQueue.notifyAll();
  }
};

var TRANSACTION_WRAPPERS = [NESTED_UPDATES, UPDATE_QUEUEING];

function ReactUpdatesFlushTransaction() {
  this.reinitializeTransaction();
  this.dirtyComponentsLength = null;
  this.callbackQueue = CallbackQueue.getPooled();
  this.reconcileTransaction =
    ReactUpdates.ReactReconcileTransaction.getPooled();
}

assign(
  ReactUpdatesFlushTransaction.prototype,
  Transaction.Mixin, {
  getTransactionWrappers: function() {
    return TRANSACTION_WRAPPERS;
  },

  destructor: function() {
    this.dirtyComponentsLength = null;
    CallbackQueue.release(this.callbackQueue);
    this.callbackQueue = null;
    ReactUpdates.ReactReconcileTransaction.release(this.reconcileTransaction);
    this.reconcileTransaction = null;
  },

  perform: function(method, scope, a) {
    // Essentially calls `this.reconcileTransaction.perform(method, scope, a)`
    // with this transaction's wrappers around it.
    return Transaction.Mixin.perform.call(
      this,
      this.reconcileTransaction.perform,
      this.reconcileTransaction,
      method,
      scope,
      a
    );
  }
});

PooledClass.addPoolingTo(ReactUpdatesFlushTransaction);

function batchedUpdates(callback, a, b) {
  ensureInjected();
  batchingStrategy.batchedUpdates(callback, a, b);
}

/**
 * Array comparator for ReactComponents by owner depth
 *
 * @param {ReactComponent} c1 first component you're comparing
 * @param {ReactComponent} c2 second component you're comparing
 * @return {number} Return value usable by Array.prototype.sort().
 */
function mountDepthComparator(c1, c2) {
  return c1._mountDepth - c2._mountDepth;
}

function runBatchedUpdates(transaction) {
  var len = transaction.dirtyComponentsLength;
  ("production" !== process.env.NODE_ENV ? invariant(
    len === dirtyComponents.length,
    'Expected flush transaction\'s stored dirty-components length (%s) to ' +
    'match dirty-components array length (%s).',
    len,
    dirtyComponents.length
  ) : invariant(len === dirtyComponents.length));

  // Since reconciling a component higher in the owner hierarchy usually (not
  // always -- see shouldComponentUpdate()) will reconcile children, reconcile
  // them before their children by sorting the array.
  dirtyComponents.sort(mountDepthComparator);

  for (var i = 0; i < len; i++) {
    // If a component is unmounted before pending changes apply, ignore them
    // TODO: Queue unmounts in the same list to avoid this happening at all
    var component = dirtyComponents[i];
    if (component.isMounted()) {
      // If performUpdateIfNecessary happens to enqueue any new updates, we
      // shouldn't execute the callbacks until the next render happens, so
      // stash the callbacks first
      var callbacks = component._pendingCallbacks;
      component._pendingCallbacks = null;
      component.performUpdateIfNecessary(transaction.reconcileTransaction);

      if (callbacks) {
        for (var j = 0; j < callbacks.length; j++) {
          transaction.callbackQueue.enqueue(
            callbacks[j],
            component
          );
        }
      }
    }
  }
}

var flushBatchedUpdates = ReactPerf.measure(
  'ReactUpdates',
  'flushBatchedUpdates',
  function() {
    // ReactUpdatesFlushTransaction's wrappers will clear the dirtyComponents
    // array and perform any updates enqueued by mount-ready handlers (i.e.,
    // componentDidUpdate) but we need to check here too in order to catch
    // updates enqueued by setState callbacks and asap calls.
    while (dirtyComponents.length || asapEnqueued) {
      if (dirtyComponents.length) {
        var transaction = ReactUpdatesFlushTransaction.getPooled();
        transaction.perform(runBatchedUpdates, null, transaction);
        ReactUpdatesFlushTransaction.release(transaction);
      }

      if (asapEnqueued) {
        asapEnqueued = false;
        var queue = asapCallbackQueue;
        asapCallbackQueue = CallbackQueue.getPooled();
        queue.notifyAll();
        CallbackQueue.release(queue);
      }
    }
  }
);

/**
 * Mark a component as needing a rerender, adding an optional callback to a
 * list of functions which will be executed once the rerender occurs.
 */
function enqueueUpdate(component, callback) {
  ("production" !== process.env.NODE_ENV ? invariant(
    !callback || typeof callback === "function",
    'enqueueUpdate(...): You called `setProps`, `replaceProps`, ' +
    '`setState`, `replaceState`, or `forceUpdate` with a callback that ' +
    'isn\'t callable.'
  ) : invariant(!callback || typeof callback === "function"));
  ensureInjected();

  // Various parts of our code (such as ReactCompositeComponent's
  // _renderValidatedComponent) assume that calls to render aren't nested;
  // verify that that's the case. (This is called by each top-level update
  // function, like setProps, setState, forceUpdate, etc.; creation and
  // destruction of top-level components is guarded in ReactMount.)
  ("production" !== process.env.NODE_ENV ? warning(
    ReactCurrentOwner.current == null,
    'enqueueUpdate(): Render methods should be a pure function of props ' +
    'and state; triggering nested component updates from render is not ' +
    'allowed. If necessary, trigger nested updates in ' +
    'componentDidUpdate.'
  ) : null);

  if (!batchingStrategy.isBatchingUpdates) {
    batchingStrategy.batchedUpdates(enqueueUpdate, component, callback);
    return;
  }

  dirtyComponents.push(component);

  if (callback) {
    if (component._pendingCallbacks) {
      component._pendingCallbacks.push(callback);
    } else {
      component._pendingCallbacks = [callback];
    }
  }
}

/**
 * Enqueue a callback to be run at the end of the current batching cycle. Throws
 * if no updates are currently being performed.
 */
function asap(callback, context) {
  ("production" !== process.env.NODE_ENV ? invariant(
    batchingStrategy.isBatchingUpdates,
    'ReactUpdates.asap: Can\'t enqueue an asap callback in a context where' +
    'updates are not being batched.'
  ) : invariant(batchingStrategy.isBatchingUpdates));
  asapCallbackQueue.enqueue(callback, context);
  asapEnqueued = true;
}

var ReactUpdatesInjection = {
  injectReconcileTransaction: function(ReconcileTransaction) {
    ("production" !== process.env.NODE_ENV ? invariant(
      ReconcileTransaction,
      'ReactUpdates: must provide a reconcile transaction class'
    ) : invariant(ReconcileTransaction));
    ReactUpdates.ReactReconcileTransaction = ReconcileTransaction;
  },

  injectBatchingStrategy: function(_batchingStrategy) {
    ("production" !== process.env.NODE_ENV ? invariant(
      _batchingStrategy,
      'ReactUpdates: must provide a batching strategy'
    ) : invariant(_batchingStrategy));
    ("production" !== process.env.NODE_ENV ? invariant(
      typeof _batchingStrategy.batchedUpdates === 'function',
      'ReactUpdates: must provide a batchedUpdates() function'
    ) : invariant(typeof _batchingStrategy.batchedUpdates === 'function'));
    ("production" !== process.env.NODE_ENV ? invariant(
      typeof _batchingStrategy.isBatchingUpdates === 'boolean',
      'ReactUpdates: must provide an isBatchingUpdates boolean attribute'
    ) : invariant(typeof _batchingStrategy.isBatchingUpdates === 'boolean'));
    batchingStrategy = _batchingStrategy;
  }
};

var ReactUpdates = {
  /**
   * React references `ReactReconcileTransaction` using this property in order
   * to allow dependency injection.
   *
   * @internal
   */
  ReactReconcileTransaction: null,

  batchedUpdates: batchedUpdates,
  enqueueUpdate: enqueueUpdate,
  flushBatchedUpdates: flushBatchedUpdates,
  injection: ReactUpdatesInjection,
  asap: asap
};

module.exports = ReactUpdates;

}).call(this,require('_process'))
},{"./CallbackQueue":113,"./Object.assign":135,"./PooledClass":136,"./ReactCurrentOwner":148,"./ReactPerf":181,"./Transaction":214,"./invariant":247,"./warning":267,"_process":91}],198:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ReactWithAddons
 */

/**
 * This module exists purely in the open source project, and is meant as a way
 * to create a separate standalone build of React. This build has "addons", or
 * functionality we've built and think might be useful but doesn't have a good
 * place to live inside React core.
 */

"use strict";

var LinkedStateMixin = require("./LinkedStateMixin");
var React = require("./React");
var ReactComponentWithPureRenderMixin =
  require("./ReactComponentWithPureRenderMixin");
var ReactCSSTransitionGroup = require("./ReactCSSTransitionGroup");
var ReactTransitionGroup = require("./ReactTransitionGroup");
var ReactUpdates = require("./ReactUpdates");

var cx = require("./cx");
var cloneWithProps = require("./cloneWithProps");
var update = require("./update");

React.addons = {
  CSSTransitionGroup: ReactCSSTransitionGroup,
  LinkedStateMixin: LinkedStateMixin,
  PureRenderMixin: ReactComponentWithPureRenderMixin,
  TransitionGroup: ReactTransitionGroup,

  batchedUpdates: ReactUpdates.batchedUpdates,
  classSet: cx,
  cloneWithProps: cloneWithProps,
  update: update
};

if ("production" !== process.env.NODE_ENV) {
  React.addons.Perf = require("./ReactDefaultPerf");
  React.addons.TestUtils = require("./ReactTestUtils");
}

module.exports = React;

}).call(this,require('_process'))
},{"./LinkedStateMixin":131,"./React":137,"./ReactCSSTransitionGroup":140,"./ReactComponentWithPureRenderMixin":145,"./ReactDefaultPerf":162,"./ReactTestUtils":192,"./ReactTransitionGroup":196,"./ReactUpdates":197,"./cloneWithProps":220,"./cx":225,"./update":266,"_process":91}],199:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule SVGDOMPropertyConfig
 */

/*jslint bitwise: true*/

"use strict";

var DOMProperty = require("./DOMProperty");

var MUST_USE_ATTRIBUTE = DOMProperty.injection.MUST_USE_ATTRIBUTE;

var SVGDOMPropertyConfig = {
  Properties: {
    cx: MUST_USE_ATTRIBUTE,
    cy: MUST_USE_ATTRIBUTE,
    d: MUST_USE_ATTRIBUTE,
    dx: MUST_USE_ATTRIBUTE,
    dy: MUST_USE_ATTRIBUTE,
    fill: MUST_USE_ATTRIBUTE,
    fillOpacity: MUST_USE_ATTRIBUTE,
    fontFamily: MUST_USE_ATTRIBUTE,
    fontSize: MUST_USE_ATTRIBUTE,
    fx: MUST_USE_ATTRIBUTE,
    fy: MUST_USE_ATTRIBUTE,
    gradientTransform: MUST_USE_ATTRIBUTE,
    gradientUnits: MUST_USE_ATTRIBUTE,
    markerEnd: MUST_USE_ATTRIBUTE,
    markerMid: MUST_USE_ATTRIBUTE,
    markerStart: MUST_USE_ATTRIBUTE,
    offset: MUST_USE_ATTRIBUTE,
    opacity: MUST_USE_ATTRIBUTE,
    patternContentUnits: MUST_USE_ATTRIBUTE,
    patternUnits: MUST_USE_ATTRIBUTE,
    points: MUST_USE_ATTRIBUTE,
    preserveAspectRatio: MUST_USE_ATTRIBUTE,
    r: MUST_USE_ATTRIBUTE,
    rx: MUST_USE_ATTRIBUTE,
    ry: MUST_USE_ATTRIBUTE,
    spreadMethod: MUST_USE_ATTRIBUTE,
    stopColor: MUST_USE_ATTRIBUTE,
    stopOpacity: MUST_USE_ATTRIBUTE,
    stroke: MUST_USE_ATTRIBUTE,
    strokeDasharray: MUST_USE_ATTRIBUTE,
    strokeLinecap: MUST_USE_ATTRIBUTE,
    strokeOpacity: MUST_USE_ATTRIBUTE,
    strokeWidth: MUST_USE_ATTRIBUTE,
    textAnchor: MUST_USE_ATTRIBUTE,
    transform: MUST_USE_ATTRIBUTE,
    version: MUST_USE_ATTRIBUTE,
    viewBox: MUST_USE_ATTRIBUTE,
    x1: MUST_USE_ATTRIBUTE,
    x2: MUST_USE_ATTRIBUTE,
    x: MUST_USE_ATTRIBUTE,
    y1: MUST_USE_ATTRIBUTE,
    y2: MUST_USE_ATTRIBUTE,
    y: MUST_USE_ATTRIBUTE
  },
  DOMAttributeNames: {
    fillOpacity: 'fill-opacity',
    fontFamily: 'font-family',
    fontSize: 'font-size',
    gradientTransform: 'gradientTransform',
    gradientUnits: 'gradientUnits',
    markerEnd: 'marker-end',
    markerMid: 'marker-mid',
    markerStart: 'marker-start',
    patternContentUnits: 'patternContentUnits',
    patternUnits: 'patternUnits',
    preserveAspectRatio: 'preserveAspectRatio',
    spreadMethod: 'spreadMethod',
    stopColor: 'stop-color',
    stopOpacity: 'stop-opacity',
    strokeDasharray: 'stroke-dasharray',
    strokeLinecap: 'stroke-linecap',
    strokeOpacity: 'stroke-opacity',
    strokeWidth: 'stroke-width',
    textAnchor: 'text-anchor',
    viewBox: 'viewBox'
  }
};

module.exports = SVGDOMPropertyConfig;

},{"./DOMProperty":118}],200:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule SelectEventPlugin
 */

"use strict";

var EventConstants = require("./EventConstants");
var EventPropagators = require("./EventPropagators");
var ReactInputSelection = require("./ReactInputSelection");
var SyntheticEvent = require("./SyntheticEvent");

var getActiveElement = require("./getActiveElement");
var isTextInputElement = require("./isTextInputElement");
var keyOf = require("./keyOf");
var shallowEqual = require("./shallowEqual");

var topLevelTypes = EventConstants.topLevelTypes;

var eventTypes = {
  select: {
    phasedRegistrationNames: {
      bubbled: keyOf({onSelect: null}),
      captured: keyOf({onSelectCapture: null})
    },
    dependencies: [
      topLevelTypes.topBlur,
      topLevelTypes.topContextMenu,
      topLevelTypes.topFocus,
      topLevelTypes.topKeyDown,
      topLevelTypes.topMouseDown,
      topLevelTypes.topMouseUp,
      topLevelTypes.topSelectionChange
    ]
  }
};

var activeElement = null;
var activeElementID = null;
var lastSelection = null;
var mouseDown = false;

/**
 * Get an object which is a unique representation of the current selection.
 *
 * The return value will not be consistent across nodes or browsers, but
 * two identical selections on the same node will return identical objects.
 *
 * @param {DOMElement} node
 * @param {object}
 */
function getSelection(node) {
  if ('selectionStart' in node &&
      ReactInputSelection.hasSelectionCapabilities(node)) {
    return {
      start: node.selectionStart,
      end: node.selectionEnd
    };
  } else if (window.getSelection) {
    var selection = window.getSelection();
    return {
      anchorNode: selection.anchorNode,
      anchorOffset: selection.anchorOffset,
      focusNode: selection.focusNode,
      focusOffset: selection.focusOffset
    };
  } else if (document.selection) {
    var range = document.selection.createRange();
    return {
      parentElement: range.parentElement(),
      text: range.text,
      top: range.boundingTop,
      left: range.boundingLeft
    };
  }
}

/**
 * Poll selection to see whether it's changed.
 *
 * @param {object} nativeEvent
 * @return {?SyntheticEvent}
 */
function constructSelectEvent(nativeEvent) {
  // Ensure we have the right element, and that the user is not dragging a
  // selection (this matches native `select` event behavior). In HTML5, select
  // fires only on input and textarea thus if there's no focused element we
  // won't dispatch.
  if (mouseDown ||
      activeElement == null ||
      activeElement != getActiveElement()) {
    return;
  }

  // Only fire when selection has actually changed.
  var currentSelection = getSelection(activeElement);
  if (!lastSelection || !shallowEqual(lastSelection, currentSelection)) {
    lastSelection = currentSelection;

    var syntheticEvent = SyntheticEvent.getPooled(
      eventTypes.select,
      activeElementID,
      nativeEvent
    );

    syntheticEvent.type = 'select';
    syntheticEvent.target = activeElement;

    EventPropagators.accumulateTwoPhaseDispatches(syntheticEvent);

    return syntheticEvent;
  }
}

/**
 * This plugin creates an `onSelect` event that normalizes select events
 * across form elements.
 *
 * Supported elements are:
 * - input (see `isTextInputElement`)
 * - textarea
 * - contentEditable
 *
 * This differs from native browser implementations in the following ways:
 * - Fires on contentEditable fields as well as inputs.
 * - Fires for collapsed selection.
 * - Fires after user input.
 */
var SelectEventPlugin = {

  eventTypes: eventTypes,

  /**
   * @param {string} topLevelType Record from `EventConstants`.
   * @param {DOMEventTarget} topLevelTarget The listening component root node.
   * @param {string} topLevelTargetID ID of `topLevelTarget`.
   * @param {object} nativeEvent Native browser event.
   * @return {*} An accumulation of synthetic events.
   * @see {EventPluginHub.extractEvents}
   */
  extractEvents: function(
      topLevelType,
      topLevelTarget,
      topLevelTargetID,
      nativeEvent) {

    switch (topLevelType) {
      // Track the input node that has focus.
      case topLevelTypes.topFocus:
        if (isTextInputElement(topLevelTarget) ||
            topLevelTarget.contentEditable === 'true') {
          activeElement = topLevelTarget;
          activeElementID = topLevelTargetID;
          lastSelection = null;
        }
        break;
      case topLevelTypes.topBlur:
        activeElement = null;
        activeElementID = null;
        lastSelection = null;
        break;

      // Don't fire the event while the user is dragging. This matches the
      // semantics of the native select event.
      case topLevelTypes.topMouseDown:
        mouseDown = true;
        break;
      case topLevelTypes.topContextMenu:
      case topLevelTypes.topMouseUp:
        mouseDown = false;
        return constructSelectEvent(nativeEvent);

      // Chrome and IE fire non-standard event when selection is changed (and
      // sometimes when it hasn't).
      // Firefox doesn't support selectionchange, so check selection status
      // after each key entry. The selection changes after keydown and before
      // keyup, but we check on keydown as well in the case of holding down a
      // key, when multiple keydown events are fired but only one keyup is.
      case topLevelTypes.topSelectionChange:
      case topLevelTypes.topKeyDown:
      case topLevelTypes.topKeyUp:
        return constructSelectEvent(nativeEvent);
    }
  }
};

module.exports = SelectEventPlugin;

},{"./EventConstants":123,"./EventPropagators":128,"./ReactInputSelection":171,"./SyntheticEvent":206,"./getActiveElement":234,"./isTextInputElement":250,"./keyOf":254,"./shallowEqual":262}],201:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ServerReactRootIndex
 * @typechecks
 */

"use strict";

/**
 * Size of the reactRoot ID space. We generate random numbers for React root
 * IDs and if there's a collision the events and DOM update system will
 * get confused. In the future we need a way to generate GUIDs but for
 * now this will work on a smaller scale.
 */
var GLOBAL_MOUNT_POINT_MAX = Math.pow(2, 53);

var ServerReactRootIndex = {
  createReactRootIndex: function() {
    return Math.ceil(Math.random() * GLOBAL_MOUNT_POINT_MAX);
  }
};

module.exports = ServerReactRootIndex;

},{}],202:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule SimpleEventPlugin
 */

"use strict";

var EventConstants = require("./EventConstants");
var EventPluginUtils = require("./EventPluginUtils");
var EventPropagators = require("./EventPropagators");
var SyntheticClipboardEvent = require("./SyntheticClipboardEvent");
var SyntheticEvent = require("./SyntheticEvent");
var SyntheticFocusEvent = require("./SyntheticFocusEvent");
var SyntheticKeyboardEvent = require("./SyntheticKeyboardEvent");
var SyntheticMouseEvent = require("./SyntheticMouseEvent");
var SyntheticDragEvent = require("./SyntheticDragEvent");
var SyntheticTouchEvent = require("./SyntheticTouchEvent");
var SyntheticUIEvent = require("./SyntheticUIEvent");
var SyntheticWheelEvent = require("./SyntheticWheelEvent");

var getEventCharCode = require("./getEventCharCode");

var invariant = require("./invariant");
var keyOf = require("./keyOf");
var warning = require("./warning");

var topLevelTypes = EventConstants.topLevelTypes;

var eventTypes = {
  blur: {
    phasedRegistrationNames: {
      bubbled: keyOf({onBlur: true}),
      captured: keyOf({onBlurCapture: true})
    }
  },
  click: {
    phasedRegistrationNames: {
      bubbled: keyOf({onClick: true}),
      captured: keyOf({onClickCapture: true})
    }
  },
  contextMenu: {
    phasedRegistrationNames: {
      bubbled: keyOf({onContextMenu: true}),
      captured: keyOf({onContextMenuCapture: true})
    }
  },
  copy: {
    phasedRegistrationNames: {
      bubbled: keyOf({onCopy: true}),
      captured: keyOf({onCopyCapture: true})
    }
  },
  cut: {
    phasedRegistrationNames: {
      bubbled: keyOf({onCut: true}),
      captured: keyOf({onCutCapture: true})
    }
  },
  doubleClick: {
    phasedRegistrationNames: {
      bubbled: keyOf({onDoubleClick: true}),
      captured: keyOf({onDoubleClickCapture: true})
    }
  },
  drag: {
    phasedRegistrationNames: {
      bubbled: keyOf({onDrag: true}),
      captured: keyOf({onDragCapture: true})
    }
  },
  dragEnd: {
    phasedRegistrationNames: {
      bubbled: keyOf({onDragEnd: true}),
      captured: keyOf({onDragEndCapture: true})
    }
  },
  dragEnter: {
    phasedRegistrationNames: {
      bubbled: keyOf({onDragEnter: true}),
      captured: keyOf({onDragEnterCapture: true})
    }
  },
  dragExit: {
    phasedRegistrationNames: {
      bubbled: keyOf({onDragExit: true}),
      captured: keyOf({onDragExitCapture: true})
    }
  },
  dragLeave: {
    phasedRegistrationNames: {
      bubbled: keyOf({onDragLeave: true}),
      captured: keyOf({onDragLeaveCapture: true})
    }
  },
  dragOver: {
    phasedRegistrationNames: {
      bubbled: keyOf({onDragOver: true}),
      captured: keyOf({onDragOverCapture: true})
    }
  },
  dragStart: {
    phasedRegistrationNames: {
      bubbled: keyOf({onDragStart: true}),
      captured: keyOf({onDragStartCapture: true})
    }
  },
  drop: {
    phasedRegistrationNames: {
      bubbled: keyOf({onDrop: true}),
      captured: keyOf({onDropCapture: true})
    }
  },
  focus: {
    phasedRegistrationNames: {
      bubbled: keyOf({onFocus: true}),
      captured: keyOf({onFocusCapture: true})
    }
  },
  input: {
    phasedRegistrationNames: {
      bubbled: keyOf({onInput: true}),
      captured: keyOf({onInputCapture: true})
    }
  },
  keyDown: {
    phasedRegistrationNames: {
      bubbled: keyOf({onKeyDown: true}),
      captured: keyOf({onKeyDownCapture: true})
    }
  },
  keyPress: {
    phasedRegistrationNames: {
      bubbled: keyOf({onKeyPress: true}),
      captured: keyOf({onKeyPressCapture: true})
    }
  },
  keyUp: {
    phasedRegistrationNames: {
      bubbled: keyOf({onKeyUp: true}),
      captured: keyOf({onKeyUpCapture: true})
    }
  },
  load: {
    phasedRegistrationNames: {
      bubbled: keyOf({onLoad: true}),
      captured: keyOf({onLoadCapture: true})
    }
  },
  error: {
    phasedRegistrationNames: {
      bubbled: keyOf({onError: true}),
      captured: keyOf({onErrorCapture: true})
    }
  },
  // Note: We do not allow listening to mouseOver events. Instead, use the
  // onMouseEnter/onMouseLeave created by `EnterLeaveEventPlugin`.
  mouseDown: {
    phasedRegistrationNames: {
      bubbled: keyOf({onMouseDown: true}),
      captured: keyOf({onMouseDownCapture: true})
    }
  },
  mouseMove: {
    phasedRegistrationNames: {
      bubbled: keyOf({onMouseMove: true}),
      captured: keyOf({onMouseMoveCapture: true})
    }
  },
  mouseOut: {
    phasedRegistrationNames: {
      bubbled: keyOf({onMouseOut: true}),
      captured: keyOf({onMouseOutCapture: true})
    }
  },
  mouseOver: {
    phasedRegistrationNames: {
      bubbled: keyOf({onMouseOver: true}),
      captured: keyOf({onMouseOverCapture: true})
    }
  },
  mouseUp: {
    phasedRegistrationNames: {
      bubbled: keyOf({onMouseUp: true}),
      captured: keyOf({onMouseUpCapture: true})
    }
  },
  paste: {
    phasedRegistrationNames: {
      bubbled: keyOf({onPaste: true}),
      captured: keyOf({onPasteCapture: true})
    }
  },
  reset: {
    phasedRegistrationNames: {
      bubbled: keyOf({onReset: true}),
      captured: keyOf({onResetCapture: true})
    }
  },
  scroll: {
    phasedRegistrationNames: {
      bubbled: keyOf({onScroll: true}),
      captured: keyOf({onScrollCapture: true})
    }
  },
  submit: {
    phasedRegistrationNames: {
      bubbled: keyOf({onSubmit: true}),
      captured: keyOf({onSubmitCapture: true})
    }
  },
  touchCancel: {
    phasedRegistrationNames: {
      bubbled: keyOf({onTouchCancel: true}),
      captured: keyOf({onTouchCancelCapture: true})
    }
  },
  touchEnd: {
    phasedRegistrationNames: {
      bubbled: keyOf({onTouchEnd: true}),
      captured: keyOf({onTouchEndCapture: true})
    }
  },
  touchMove: {
    phasedRegistrationNames: {
      bubbled: keyOf({onTouchMove: true}),
      captured: keyOf({onTouchMoveCapture: true})
    }
  },
  touchStart: {
    phasedRegistrationNames: {
      bubbled: keyOf({onTouchStart: true}),
      captured: keyOf({onTouchStartCapture: true})
    }
  },
  wheel: {
    phasedRegistrationNames: {
      bubbled: keyOf({onWheel: true}),
      captured: keyOf({onWheelCapture: true})
    }
  }
};

var topLevelEventsToDispatchConfig = {
  topBlur:        eventTypes.blur,
  topClick:       eventTypes.click,
  topContextMenu: eventTypes.contextMenu,
  topCopy:        eventTypes.copy,
  topCut:         eventTypes.cut,
  topDoubleClick: eventTypes.doubleClick,
  topDrag:        eventTypes.drag,
  topDragEnd:     eventTypes.dragEnd,
  topDragEnter:   eventTypes.dragEnter,
  topDragExit:    eventTypes.dragExit,
  topDragLeave:   eventTypes.dragLeave,
  topDragOver:    eventTypes.dragOver,
  topDragStart:   eventTypes.dragStart,
  topDrop:        eventTypes.drop,
  topError:       eventTypes.error,
  topFocus:       eventTypes.focus,
  topInput:       eventTypes.input,
  topKeyDown:     eventTypes.keyDown,
  topKeyPress:    eventTypes.keyPress,
  topKeyUp:       eventTypes.keyUp,
  topLoad:        eventTypes.load,
  topMouseDown:   eventTypes.mouseDown,
  topMouseMove:   eventTypes.mouseMove,
  topMouseOut:    eventTypes.mouseOut,
  topMouseOver:   eventTypes.mouseOver,
  topMouseUp:     eventTypes.mouseUp,
  topPaste:       eventTypes.paste,
  topReset:       eventTypes.reset,
  topScroll:      eventTypes.scroll,
  topSubmit:      eventTypes.submit,
  topTouchCancel: eventTypes.touchCancel,
  topTouchEnd:    eventTypes.touchEnd,
  topTouchMove:   eventTypes.touchMove,
  topTouchStart:  eventTypes.touchStart,
  topWheel:       eventTypes.wheel
};

for (var topLevelType in topLevelEventsToDispatchConfig) {
  topLevelEventsToDispatchConfig[topLevelType].dependencies = [topLevelType];
}

var SimpleEventPlugin = {

  eventTypes: eventTypes,

  /**
   * Same as the default implementation, except cancels the event when return
   * value is false. This behavior will be disabled in a future release.
   *
   * @param {object} Event to be dispatched.
   * @param {function} Application-level callback.
   * @param {string} domID DOM ID to pass to the callback.
   */
  executeDispatch: function(event, listener, domID) {
    var returnValue = EventPluginUtils.executeDispatch(event, listener, domID);

    ("production" !== process.env.NODE_ENV ? warning(
      typeof returnValue !== 'boolean',
      'Returning `false` from an event handler is deprecated and will be ' +
      'ignored in a future release. Instead, manually call ' +
      'e.stopPropagation() or e.preventDefault(), as appropriate.'
    ) : null);

    if (returnValue === false) {
      event.stopPropagation();
      event.preventDefault();
    }
  },

  /**
   * @param {string} topLevelType Record from `EventConstants`.
   * @param {DOMEventTarget} topLevelTarget The listening component root node.
   * @param {string} topLevelTargetID ID of `topLevelTarget`.
   * @param {object} nativeEvent Native browser event.
   * @return {*} An accumulation of synthetic events.
   * @see {EventPluginHub.extractEvents}
   */
  extractEvents: function(
      topLevelType,
      topLevelTarget,
      topLevelTargetID,
      nativeEvent) {
    var dispatchConfig = topLevelEventsToDispatchConfig[topLevelType];
    if (!dispatchConfig) {
      return null;
    }
    var EventConstructor;
    switch (topLevelType) {
      case topLevelTypes.topInput:
      case topLevelTypes.topLoad:
      case topLevelTypes.topError:
      case topLevelTypes.topReset:
      case topLevelTypes.topSubmit:
        // HTML Events
        // @see http://www.w3.org/TR/html5/index.html#events-0
        EventConstructor = SyntheticEvent;
        break;
      case topLevelTypes.topKeyPress:
        // FireFox creates a keypress event for function keys too. This removes
        // the unwanted keypress events. Enter is however both printable and
        // non-printable. One would expect Tab to be as well (but it isn't).
        if (getEventCharCode(nativeEvent) === 0) {
          return null;
        }
        /* falls through */
      case topLevelTypes.topKeyDown:
      case topLevelTypes.topKeyUp:
        EventConstructor = SyntheticKeyboardEvent;
        break;
      case topLevelTypes.topBlur:
      case topLevelTypes.topFocus:
        EventConstructor = SyntheticFocusEvent;
        break;
      case topLevelTypes.topClick:
        // Firefox creates a click event on right mouse clicks. This removes the
        // unwanted click events.
        if (nativeEvent.button === 2) {
          return null;
        }
        /* falls through */
      case topLevelTypes.topContextMenu:
      case topLevelTypes.topDoubleClick:
      case topLevelTypes.topMouseDown:
      case topLevelTypes.topMouseMove:
      case topLevelTypes.topMouseOut:
      case topLevelTypes.topMouseOver:
      case topLevelTypes.topMouseUp:
        EventConstructor = SyntheticMouseEvent;
        break;
      case topLevelTypes.topDrag:
      case topLevelTypes.topDragEnd:
      case topLevelTypes.topDragEnter:
      case topLevelTypes.topDragExit:
      case topLevelTypes.topDragLeave:
      case topLevelTypes.topDragOver:
      case topLevelTypes.topDragStart:
      case topLevelTypes.topDrop:
        EventConstructor = SyntheticDragEvent;
        break;
      case topLevelTypes.topTouchCancel:
      case topLevelTypes.topTouchEnd:
      case topLevelTypes.topTouchMove:
      case topLevelTypes.topTouchStart:
        EventConstructor = SyntheticTouchEvent;
        break;
      case topLevelTypes.topScroll:
        EventConstructor = SyntheticUIEvent;
        break;
      case topLevelTypes.topWheel:
        EventConstructor = SyntheticWheelEvent;
        break;
      case topLevelTypes.topCopy:
      case topLevelTypes.topCut:
      case topLevelTypes.topPaste:
        EventConstructor = SyntheticClipboardEvent;
        break;
    }
    ("production" !== process.env.NODE_ENV ? invariant(
      EventConstructor,
      'SimpleEventPlugin: Unhandled event type, `%s`.',
      topLevelType
    ) : invariant(EventConstructor));
    var event = EventConstructor.getPooled(
      dispatchConfig,
      topLevelTargetID,
      nativeEvent
    );
    EventPropagators.accumulateTwoPhaseDispatches(event);
    return event;
  }

};

module.exports = SimpleEventPlugin;

}).call(this,require('_process'))
},{"./EventConstants":123,"./EventPluginUtils":127,"./EventPropagators":128,"./SyntheticClipboardEvent":203,"./SyntheticDragEvent":205,"./SyntheticEvent":206,"./SyntheticFocusEvent":207,"./SyntheticKeyboardEvent":209,"./SyntheticMouseEvent":210,"./SyntheticTouchEvent":211,"./SyntheticUIEvent":212,"./SyntheticWheelEvent":213,"./getEventCharCode":235,"./invariant":247,"./keyOf":254,"./warning":267,"_process":91}],203:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule SyntheticClipboardEvent
 * @typechecks static-only
 */

"use strict";

var SyntheticEvent = require("./SyntheticEvent");

/**
 * @interface Event
 * @see http://www.w3.org/TR/clipboard-apis/
 */
var ClipboardEventInterface = {
  clipboardData: function(event) {
    return (
      'clipboardData' in event ?
        event.clipboardData :
        window.clipboardData
    );
  }
};

/**
 * @param {object} dispatchConfig Configuration used to dispatch this event.
 * @param {string} dispatchMarker Marker identifying the event target.
 * @param {object} nativeEvent Native browser event.
 * @extends {SyntheticUIEvent}
 */
function SyntheticClipboardEvent(dispatchConfig, dispatchMarker, nativeEvent) {
  SyntheticEvent.call(this, dispatchConfig, dispatchMarker, nativeEvent);
}

SyntheticEvent.augmentClass(SyntheticClipboardEvent, ClipboardEventInterface);

module.exports = SyntheticClipboardEvent;


},{"./SyntheticEvent":206}],204:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule SyntheticCompositionEvent
 * @typechecks static-only
 */

"use strict";

var SyntheticEvent = require("./SyntheticEvent");

/**
 * @interface Event
 * @see http://www.w3.org/TR/DOM-Level-3-Events/#events-compositionevents
 */
var CompositionEventInterface = {
  data: null
};

/**
 * @param {object} dispatchConfig Configuration used to dispatch this event.
 * @param {string} dispatchMarker Marker identifying the event target.
 * @param {object} nativeEvent Native browser event.
 * @extends {SyntheticUIEvent}
 */
function SyntheticCompositionEvent(
  dispatchConfig,
  dispatchMarker,
  nativeEvent) {
  SyntheticEvent.call(this, dispatchConfig, dispatchMarker, nativeEvent);
}

SyntheticEvent.augmentClass(
  SyntheticCompositionEvent,
  CompositionEventInterface
);

module.exports = SyntheticCompositionEvent;


},{"./SyntheticEvent":206}],205:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule SyntheticDragEvent
 * @typechecks static-only
 */

"use strict";

var SyntheticMouseEvent = require("./SyntheticMouseEvent");

/**
 * @interface DragEvent
 * @see http://www.w3.org/TR/DOM-Level-3-Events/
 */
var DragEventInterface = {
  dataTransfer: null
};

/**
 * @param {object} dispatchConfig Configuration used to dispatch this event.
 * @param {string} dispatchMarker Marker identifying the event target.
 * @param {object} nativeEvent Native browser event.
 * @extends {SyntheticUIEvent}
 */
function SyntheticDragEvent(dispatchConfig, dispatchMarker, nativeEvent) {
  SyntheticMouseEvent.call(this, dispatchConfig, dispatchMarker, nativeEvent);
}

SyntheticMouseEvent.augmentClass(SyntheticDragEvent, DragEventInterface);

module.exports = SyntheticDragEvent;

},{"./SyntheticMouseEvent":210}],206:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule SyntheticEvent
 * @typechecks static-only
 */

"use strict";

var PooledClass = require("./PooledClass");

var assign = require("./Object.assign");
var emptyFunction = require("./emptyFunction");
var getEventTarget = require("./getEventTarget");

/**
 * @interface Event
 * @see http://www.w3.org/TR/DOM-Level-3-Events/
 */
var EventInterface = {
  type: null,
  target: getEventTarget,
  // currentTarget is set when dispatching; no use in copying it here
  currentTarget: emptyFunction.thatReturnsNull,
  eventPhase: null,
  bubbles: null,
  cancelable: null,
  timeStamp: function(event) {
    return event.timeStamp || Date.now();
  },
  defaultPrevented: null,
  isTrusted: null
};

/**
 * Synthetic events are dispatched by event plugins, typically in response to a
 * top-level event delegation handler.
 *
 * These systems should generally use pooling to reduce the frequency of garbage
 * collection. The system should check `isPersistent` to determine whether the
 * event should be released into the pool after being dispatched. Users that
 * need a persisted event should invoke `persist`.
 *
 * Synthetic events (and subclasses) implement the DOM Level 3 Events API by
 * normalizing browser quirks. Subclasses do not necessarily have to implement a
 * DOM interface; custom application-specific events can also subclass this.
 *
 * @param {object} dispatchConfig Configuration used to dispatch this event.
 * @param {string} dispatchMarker Marker identifying the event target.
 * @param {object} nativeEvent Native browser event.
 */
function SyntheticEvent(dispatchConfig, dispatchMarker, nativeEvent) {
  this.dispatchConfig = dispatchConfig;
  this.dispatchMarker = dispatchMarker;
  this.nativeEvent = nativeEvent;

  var Interface = this.constructor.Interface;
  for (var propName in Interface) {
    if (!Interface.hasOwnProperty(propName)) {
      continue;
    }
    var normalize = Interface[propName];
    if (normalize) {
      this[propName] = normalize(nativeEvent);
    } else {
      this[propName] = nativeEvent[propName];
    }
  }

  var defaultPrevented = nativeEvent.defaultPrevented != null ?
    nativeEvent.defaultPrevented :
    nativeEvent.returnValue === false;
  if (defaultPrevented) {
    this.isDefaultPrevented = emptyFunction.thatReturnsTrue;
  } else {
    this.isDefaultPrevented = emptyFunction.thatReturnsFalse;
  }
  this.isPropagationStopped = emptyFunction.thatReturnsFalse;
}

assign(SyntheticEvent.prototype, {

  preventDefault: function() {
    this.defaultPrevented = true;
    var event = this.nativeEvent;
    event.preventDefault ? event.preventDefault() : event.returnValue = false;
    this.isDefaultPrevented = emptyFunction.thatReturnsTrue;
  },

  stopPropagation: function() {
    var event = this.nativeEvent;
    event.stopPropagation ? event.stopPropagation() : event.cancelBubble = true;
    this.isPropagationStopped = emptyFunction.thatReturnsTrue;
  },

  /**
   * We release all dispatched `SyntheticEvent`s after each event loop, adding
   * them back into the pool. This allows a way to hold onto a reference that
   * won't be added back into the pool.
   */
  persist: function() {
    this.isPersistent = emptyFunction.thatReturnsTrue;
  },

  /**
   * Checks if this event should be released back into the pool.
   *
   * @return {boolean} True if this should not be released, false otherwise.
   */
  isPersistent: emptyFunction.thatReturnsFalse,

  /**
   * `PooledClass` looks for `destructor` on each instance it releases.
   */
  destructor: function() {
    var Interface = this.constructor.Interface;
    for (var propName in Interface) {
      this[propName] = null;
    }
    this.dispatchConfig = null;
    this.dispatchMarker = null;
    this.nativeEvent = null;
  }

});

SyntheticEvent.Interface = EventInterface;

/**
 * Helper to reduce boilerplate when creating subclasses.
 *
 * @param {function} Class
 * @param {?object} Interface
 */
SyntheticEvent.augmentClass = function(Class, Interface) {
  var Super = this;

  var prototype = Object.create(Super.prototype);
  assign(prototype, Class.prototype);
  Class.prototype = prototype;
  Class.prototype.constructor = Class;

  Class.Interface = assign({}, Super.Interface, Interface);
  Class.augmentClass = Super.augmentClass;

  PooledClass.addPoolingTo(Class, PooledClass.threeArgumentPooler);
};

PooledClass.addPoolingTo(SyntheticEvent, PooledClass.threeArgumentPooler);

module.exports = SyntheticEvent;

},{"./Object.assign":135,"./PooledClass":136,"./emptyFunction":228,"./getEventTarget":238}],207:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule SyntheticFocusEvent
 * @typechecks static-only
 */

"use strict";

var SyntheticUIEvent = require("./SyntheticUIEvent");

/**
 * @interface FocusEvent
 * @see http://www.w3.org/TR/DOM-Level-3-Events/
 */
var FocusEventInterface = {
  relatedTarget: null
};

/**
 * @param {object} dispatchConfig Configuration used to dispatch this event.
 * @param {string} dispatchMarker Marker identifying the event target.
 * @param {object} nativeEvent Native browser event.
 * @extends {SyntheticUIEvent}
 */
function SyntheticFocusEvent(dispatchConfig, dispatchMarker, nativeEvent) {
  SyntheticUIEvent.call(this, dispatchConfig, dispatchMarker, nativeEvent);
}

SyntheticUIEvent.augmentClass(SyntheticFocusEvent, FocusEventInterface);

module.exports = SyntheticFocusEvent;

},{"./SyntheticUIEvent":212}],208:[function(require,module,exports){
/**
 * Copyright 2013 Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule SyntheticInputEvent
 * @typechecks static-only
 */

"use strict";

var SyntheticEvent = require("./SyntheticEvent");

/**
 * @interface Event
 * @see http://www.w3.org/TR/2013/WD-DOM-Level-3-Events-20131105
 *      /#events-inputevents
 */
var InputEventInterface = {
  data: null
};

/**
 * @param {object} dispatchConfig Configuration used to dispatch this event.
 * @param {string} dispatchMarker Marker identifying the event target.
 * @param {object} nativeEvent Native browser event.
 * @extends {SyntheticUIEvent}
 */
function SyntheticInputEvent(
  dispatchConfig,
  dispatchMarker,
  nativeEvent) {
  SyntheticEvent.call(this, dispatchConfig, dispatchMarker, nativeEvent);
}

SyntheticEvent.augmentClass(
  SyntheticInputEvent,
  InputEventInterface
);

module.exports = SyntheticInputEvent;


},{"./SyntheticEvent":206}],209:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule SyntheticKeyboardEvent
 * @typechecks static-only
 */

"use strict";

var SyntheticUIEvent = require("./SyntheticUIEvent");

var getEventCharCode = require("./getEventCharCode");
var getEventKey = require("./getEventKey");
var getEventModifierState = require("./getEventModifierState");

/**
 * @interface KeyboardEvent
 * @see http://www.w3.org/TR/DOM-Level-3-Events/
 */
var KeyboardEventInterface = {
  key: getEventKey,
  location: null,
  ctrlKey: null,
  shiftKey: null,
  altKey: null,
  metaKey: null,
  repeat: null,
  locale: null,
  getModifierState: getEventModifierState,
  // Legacy Interface
  charCode: function(event) {
    // `charCode` is the result of a KeyPress event and represents the value of
    // the actual printable character.

    // KeyPress is deprecated, but its replacement is not yet final and not
    // implemented in any major browser. Only KeyPress has charCode.
    if (event.type === 'keypress') {
      return getEventCharCode(event);
    }
    return 0;
  },
  keyCode: function(event) {
    // `keyCode` is the result of a KeyDown/Up event and represents the value of
    // physical keyboard key.

    // The actual meaning of the value depends on the users' keyboard layout
    // which cannot be detected. Assuming that it is a US keyboard layout
    // provides a surprisingly accurate mapping for US and European users.
    // Due to this, it is left to the user to implement at this time.
    if (event.type === 'keydown' || event.type === 'keyup') {
      return event.keyCode;
    }
    return 0;
  },
  which: function(event) {
    // `which` is an alias for either `keyCode` or `charCode` depending on the
    // type of the event.
    if (event.type === 'keypress') {
      return getEventCharCode(event);
    }
    if (event.type === 'keydown' || event.type === 'keyup') {
      return event.keyCode;
    }
    return 0;
  }
};

/**
 * @param {object} dispatchConfig Configuration used to dispatch this event.
 * @param {string} dispatchMarker Marker identifying the event target.
 * @param {object} nativeEvent Native browser event.
 * @extends {SyntheticUIEvent}
 */
function SyntheticKeyboardEvent(dispatchConfig, dispatchMarker, nativeEvent) {
  SyntheticUIEvent.call(this, dispatchConfig, dispatchMarker, nativeEvent);
}

SyntheticUIEvent.augmentClass(SyntheticKeyboardEvent, KeyboardEventInterface);

module.exports = SyntheticKeyboardEvent;

},{"./SyntheticUIEvent":212,"./getEventCharCode":235,"./getEventKey":236,"./getEventModifierState":237}],210:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule SyntheticMouseEvent
 * @typechecks static-only
 */

"use strict";

var SyntheticUIEvent = require("./SyntheticUIEvent");
var ViewportMetrics = require("./ViewportMetrics");

var getEventModifierState = require("./getEventModifierState");

/**
 * @interface MouseEvent
 * @see http://www.w3.org/TR/DOM-Level-3-Events/
 */
var MouseEventInterface = {
  screenX: null,
  screenY: null,
  clientX: null,
  clientY: null,
  ctrlKey: null,
  shiftKey: null,
  altKey: null,
  metaKey: null,
  getModifierState: getEventModifierState,
  button: function(event) {
    // Webkit, Firefox, IE9+
    // which:  1 2 3
    // button: 0 1 2 (standard)
    var button = event.button;
    if ('which' in event) {
      return button;
    }
    // IE<9
    // which:  undefined
    // button: 0 0 0
    // button: 1 4 2 (onmouseup)
    return button === 2 ? 2 : button === 4 ? 1 : 0;
  },
  buttons: null,
  relatedTarget: function(event) {
    return event.relatedTarget || (
      event.fromElement === event.srcElement ?
        event.toElement :
        event.fromElement
    );
  },
  // "Proprietary" Interface.
  pageX: function(event) {
    return 'pageX' in event ?
      event.pageX :
      event.clientX + ViewportMetrics.currentScrollLeft;
  },
  pageY: function(event) {
    return 'pageY' in event ?
      event.pageY :
      event.clientY + ViewportMetrics.currentScrollTop;
  }
};

/**
 * @param {object} dispatchConfig Configuration used to dispatch this event.
 * @param {string} dispatchMarker Marker identifying the event target.
 * @param {object} nativeEvent Native browser event.
 * @extends {SyntheticUIEvent}
 */
function SyntheticMouseEvent(dispatchConfig, dispatchMarker, nativeEvent) {
  SyntheticUIEvent.call(this, dispatchConfig, dispatchMarker, nativeEvent);
}

SyntheticUIEvent.augmentClass(SyntheticMouseEvent, MouseEventInterface);

module.exports = SyntheticMouseEvent;

},{"./SyntheticUIEvent":212,"./ViewportMetrics":215,"./getEventModifierState":237}],211:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule SyntheticTouchEvent
 * @typechecks static-only
 */

"use strict";

var SyntheticUIEvent = require("./SyntheticUIEvent");

var getEventModifierState = require("./getEventModifierState");

/**
 * @interface TouchEvent
 * @see http://www.w3.org/TR/touch-events/
 */
var TouchEventInterface = {
  touches: null,
  targetTouches: null,
  changedTouches: null,
  altKey: null,
  metaKey: null,
  ctrlKey: null,
  shiftKey: null,
  getModifierState: getEventModifierState
};

/**
 * @param {object} dispatchConfig Configuration used to dispatch this event.
 * @param {string} dispatchMarker Marker identifying the event target.
 * @param {object} nativeEvent Native browser event.
 * @extends {SyntheticUIEvent}
 */
function SyntheticTouchEvent(dispatchConfig, dispatchMarker, nativeEvent) {
  SyntheticUIEvent.call(this, dispatchConfig, dispatchMarker, nativeEvent);
}

SyntheticUIEvent.augmentClass(SyntheticTouchEvent, TouchEventInterface);

module.exports = SyntheticTouchEvent;

},{"./SyntheticUIEvent":212,"./getEventModifierState":237}],212:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule SyntheticUIEvent
 * @typechecks static-only
 */

"use strict";

var SyntheticEvent = require("./SyntheticEvent");

var getEventTarget = require("./getEventTarget");

/**
 * @interface UIEvent
 * @see http://www.w3.org/TR/DOM-Level-3-Events/
 */
var UIEventInterface = {
  view: function(event) {
    if (event.view) {
      return event.view;
    }

    var target = getEventTarget(event);
    if (target != null && target.window === target) {
      // target is a window object
      return target;
    }

    var doc = target.ownerDocument;
    // TODO: Figure out why `ownerDocument` is sometimes undefined in IE8.
    if (doc) {
      return doc.defaultView || doc.parentWindow;
    } else {
      return window;
    }
  },
  detail: function(event) {
    return event.detail || 0;
  }
};

/**
 * @param {object} dispatchConfig Configuration used to dispatch this event.
 * @param {string} dispatchMarker Marker identifying the event target.
 * @param {object} nativeEvent Native browser event.
 * @extends {SyntheticEvent}
 */
function SyntheticUIEvent(dispatchConfig, dispatchMarker, nativeEvent) {
  SyntheticEvent.call(this, dispatchConfig, dispatchMarker, nativeEvent);
}

SyntheticEvent.augmentClass(SyntheticUIEvent, UIEventInterface);

module.exports = SyntheticUIEvent;

},{"./SyntheticEvent":206,"./getEventTarget":238}],213:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule SyntheticWheelEvent
 * @typechecks static-only
 */

"use strict";

var SyntheticMouseEvent = require("./SyntheticMouseEvent");

/**
 * @interface WheelEvent
 * @see http://www.w3.org/TR/DOM-Level-3-Events/
 */
var WheelEventInterface = {
  deltaX: function(event) {
    return (
      'deltaX' in event ? event.deltaX :
      // Fallback to `wheelDeltaX` for Webkit and normalize (right is positive).
      'wheelDeltaX' in event ? -event.wheelDeltaX : 0
    );
  },
  deltaY: function(event) {
    return (
      'deltaY' in event ? event.deltaY :
      // Fallback to `wheelDeltaY` for Webkit and normalize (down is positive).
      'wheelDeltaY' in event ? -event.wheelDeltaY :
      // Fallback to `wheelDelta` for IE<9 and normalize (down is positive).
      'wheelDelta' in event ? -event.wheelDelta : 0
    );
  },
  deltaZ: null,

  // Browsers without "deltaMode" is reporting in raw wheel delta where one
  // notch on the scroll is always +/- 120, roughly equivalent to pixels.
  // A good approximation of DOM_DELTA_LINE (1) is 5% of viewport size or
  // ~40 pixels, for DOM_DELTA_SCREEN (2) it is 87.5% of viewport size.
  deltaMode: null
};

/**
 * @param {object} dispatchConfig Configuration used to dispatch this event.
 * @param {string} dispatchMarker Marker identifying the event target.
 * @param {object} nativeEvent Native browser event.
 * @extends {SyntheticMouseEvent}
 */
function SyntheticWheelEvent(dispatchConfig, dispatchMarker, nativeEvent) {
  SyntheticMouseEvent.call(this, dispatchConfig, dispatchMarker, nativeEvent);
}

SyntheticMouseEvent.augmentClass(SyntheticWheelEvent, WheelEventInterface);

module.exports = SyntheticWheelEvent;

},{"./SyntheticMouseEvent":210}],214:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule Transaction
 */

"use strict";

var invariant = require("./invariant");

/**
 * `Transaction` creates a black box that is able to wrap any method such that
 * certain invariants are maintained before and after the method is invoked
 * (Even if an exception is thrown while invoking the wrapped method). Whoever
 * instantiates a transaction can provide enforcers of the invariants at
 * creation time. The `Transaction` class itself will supply one additional
 * automatic invariant for you - the invariant that any transaction instance
 * should not be run while it is already being run. You would typically create a
 * single instance of a `Transaction` for reuse multiple times, that potentially
 * is used to wrap several different methods. Wrappers are extremely simple -
 * they only require implementing two methods.
 *
 * <pre>
 *                       wrappers (injected at creation time)
 *                                      +        +
 *                                      |        |
 *                    +-----------------|--------|--------------+
 *                    |                 v        |              |
 *                    |      +---------------+   |              |
 *                    |   +--|    wrapper1   |---|----+         |
 *                    |   |  +---------------+   v    |         |
 *                    |   |          +-------------+  |         |
 *                    |   |     +----|   wrapper2  |--------+   |
 *                    |   |     |    +-------------+  |     |   |
 *                    |   |     |                     |     |   |
 *                    |   v     v                     v     v   | wrapper
 *                    | +---+ +---+   +---------+   +---+ +---+ | invariants
 * perform(anyMethod) | |   | |   |   |         |   |   | |   | | maintained
 * +----------------->|-|---|-|---|-->|anyMethod|---|---|-|---|-|-------->
 *                    | |   | |   |   |         |   |   | |   | |
 *                    | |   | |   |   |         |   |   | |   | |
 *                    | |   | |   |   |         |   |   | |   | |
 *                    | +---+ +---+   +---------+   +---+ +---+ |
 *                    |  initialize                    close    |
 *                    +-----------------------------------------+
 * </pre>
 *
 * Use cases:
 * - Preserving the input selection ranges before/after reconciliation.
 *   Restoring selection even in the event of an unexpected error.
 * - Deactivating events while rearranging the DOM, preventing blurs/focuses,
 *   while guaranteeing that afterwards, the event system is reactivated.
 * - Flushing a queue of collected DOM mutations to the main UI thread after a
 *   reconciliation takes place in a worker thread.
 * - Invoking any collected `componentDidUpdate` callbacks after rendering new
 *   content.
 * - (Future use case): Wrapping particular flushes of the `ReactWorker` queue
 *   to preserve the `scrollTop` (an automatic scroll aware DOM).
 * - (Future use case): Layout calculations before and after DOM upates.
 *
 * Transactional plugin API:
 * - A module that has an `initialize` method that returns any precomputation.
 * - and a `close` method that accepts the precomputation. `close` is invoked
 *   when the wrapped process is completed, or has failed.
 *
 * @param {Array<TransactionalWrapper>} transactionWrapper Wrapper modules
 * that implement `initialize` and `close`.
 * @return {Transaction} Single transaction for reuse in thread.
 *
 * @class Transaction
 */
var Mixin = {
  /**
   * Sets up this instance so that it is prepared for collecting metrics. Does
   * so such that this setup method may be used on an instance that is already
   * initialized, in a way that does not consume additional memory upon reuse.
   * That can be useful if you decide to make your subclass of this mixin a
   * "PooledClass".
   */
  reinitializeTransaction: function() {
    this.transactionWrappers = this.getTransactionWrappers();
    if (!this.wrapperInitData) {
      this.wrapperInitData = [];
    } else {
      this.wrapperInitData.length = 0;
    }
    this._isInTransaction = false;
  },

  _isInTransaction: false,

  /**
   * @abstract
   * @return {Array<TransactionWrapper>} Array of transaction wrappers.
   */
  getTransactionWrappers: null,

  isInTransaction: function() {
    return !!this._isInTransaction;
  },

  /**
   * Executes the function within a safety window. Use this for the top level
   * methods that result in large amounts of computation/mutations that would
   * need to be safety checked.
   *
   * @param {function} method Member of scope to call.
   * @param {Object} scope Scope to invoke from.
   * @param {Object?=} args... Arguments to pass to the method (optional).
   *                           Helps prevent need to bind in many cases.
   * @return Return value from `method`.
   */
  perform: function(method, scope, a, b, c, d, e, f) {
    ("production" !== process.env.NODE_ENV ? invariant(
      !this.isInTransaction(),
      'Transaction.perform(...): Cannot initialize a transaction when there ' +
      'is already an outstanding transaction.'
    ) : invariant(!this.isInTransaction()));
    var errorThrown;
    var ret;
    try {
      this._isInTransaction = true;
      // Catching errors makes debugging more difficult, so we start with
      // errorThrown set to true before setting it to false after calling
      // close -- if it's still set to true in the finally block, it means
      // one of these calls threw.
      errorThrown = true;
      this.initializeAll(0);
      ret = method.call(scope, a, b, c, d, e, f);
      errorThrown = false;
    } finally {
      try {
        if (errorThrown) {
          // If `method` throws, prefer to show that stack trace over any thrown
          // by invoking `closeAll`.
          try {
            this.closeAll(0);
          } catch (err) {
          }
        } else {
          // Since `method` didn't throw, we don't want to silence the exception
          // here.
          this.closeAll(0);
        }
      } finally {
        this._isInTransaction = false;
      }
    }
    return ret;
  },

  initializeAll: function(startIndex) {
    var transactionWrappers = this.transactionWrappers;
    for (var i = startIndex; i < transactionWrappers.length; i++) {
      var wrapper = transactionWrappers[i];
      try {
        // Catching errors makes debugging more difficult, so we start with the
        // OBSERVED_ERROR state before overwriting it with the real return value
        // of initialize -- if it's still set to OBSERVED_ERROR in the finally
        // block, it means wrapper.initialize threw.
        this.wrapperInitData[i] = Transaction.OBSERVED_ERROR;
        this.wrapperInitData[i] = wrapper.initialize ?
          wrapper.initialize.call(this) :
          null;
      } finally {
        if (this.wrapperInitData[i] === Transaction.OBSERVED_ERROR) {
          // The initializer for wrapper i threw an error; initialize the
          // remaining wrappers but silence any exceptions from them to ensure
          // that the first error is the one to bubble up.
          try {
            this.initializeAll(i + 1);
          } catch (err) {
          }
        }
      }
    }
  },

  /**
   * Invokes each of `this.transactionWrappers.close[i]` functions, passing into
   * them the respective return values of `this.transactionWrappers.init[i]`
   * (`close`rs that correspond to initializers that failed will not be
   * invoked).
   */
  closeAll: function(startIndex) {
    ("production" !== process.env.NODE_ENV ? invariant(
      this.isInTransaction(),
      'Transaction.closeAll(): Cannot close transaction when none are open.'
    ) : invariant(this.isInTransaction()));
    var transactionWrappers = this.transactionWrappers;
    for (var i = startIndex; i < transactionWrappers.length; i++) {
      var wrapper = transactionWrappers[i];
      var initData = this.wrapperInitData[i];
      var errorThrown;
      try {
        // Catching errors makes debugging more difficult, so we start with
        // errorThrown set to true before setting it to false after calling
        // close -- if it's still set to true in the finally block, it means
        // wrapper.close threw.
        errorThrown = true;
        if (initData !== Transaction.OBSERVED_ERROR) {
          wrapper.close && wrapper.close.call(this, initData);
        }
        errorThrown = false;
      } finally {
        if (errorThrown) {
          // The closer for wrapper i threw an error; close the remaining
          // wrappers but silence any exceptions from them to ensure that the
          // first error is the one to bubble up.
          try {
            this.closeAll(i + 1);
          } catch (e) {
          }
        }
      }
    }
    this.wrapperInitData.length = 0;
  }
};

var Transaction = {

  Mixin: Mixin,

  /**
   * Token to look for to determine if an error occured.
   */
  OBSERVED_ERROR: {}

};

module.exports = Transaction;

}).call(this,require('_process'))
},{"./invariant":247,"_process":91}],215:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule ViewportMetrics
 */

"use strict";

var getUnboundedScrollPosition = require("./getUnboundedScrollPosition");

var ViewportMetrics = {

  currentScrollLeft: 0,

  currentScrollTop: 0,

  refreshScrollValues: function() {
    var scrollPosition = getUnboundedScrollPosition(window);
    ViewportMetrics.currentScrollLeft = scrollPosition.x;
    ViewportMetrics.currentScrollTop = scrollPosition.y;
  }

};

module.exports = ViewportMetrics;

},{"./getUnboundedScrollPosition":243}],216:[function(require,module,exports){
(function (process){
/**
 * Copyright 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule accumulateInto
 */

"use strict";

var invariant = require("./invariant");

/**
 *
 * Accumulates items that must not be null or undefined into the first one. This
 * is used to conserve memory by avoiding array allocations, and thus sacrifices
 * API cleanness. Since `current` can be null before being passed in and not
 * null after this function, make sure to assign it back to `current`:
 *
 * `a = accumulateInto(a, b);`
 *
 * This API should be sparingly used. Try `accumulate` for something cleaner.
 *
 * @return {*|array<*>} An accumulation of items.
 */

function accumulateInto(current, next) {
  ("production" !== process.env.NODE_ENV ? invariant(
    next != null,
    'accumulateInto(...): Accumulated items must not be null or undefined.'
  ) : invariant(next != null));
  if (current == null) {
    return next;
  }

  // Both are not empty. Warning: Never call x.concat(y) when you are not
  // certain that x is an Array (x could be a string with concat method).
  var currentIsArray = Array.isArray(current);
  var nextIsArray = Array.isArray(next);

  if (currentIsArray && nextIsArray) {
    current.push.apply(current, next);
    return current;
  }

  if (currentIsArray) {
    current.push(next);
    return current;
  }

  if (nextIsArray) {
    // A bit too dangerous to mutate `next`.
    return [current].concat(next);
  }

  return [current, next];
}

module.exports = accumulateInto;

}).call(this,require('_process'))
},{"./invariant":247,"_process":91}],217:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule adler32
 */

/* jslint bitwise:true */

"use strict";

var MOD = 65521;

// This is a clean-room implementation of adler32 designed for detecting
// if markup is not what we expect it to be. It does not need to be
// cryptographically strong, only reasonably good at detecting if markup
// generated on the server is different than that on the client.
function adler32(data) {
  var a = 1;
  var b = 0;
  for (var i = 0; i < data.length; i++) {
    a = (a + data.charCodeAt(i)) % MOD;
    b = (b + a) % MOD;
  }
  return a | (b << 16);
}

module.exports = adler32;

},{}],218:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule camelize
 * @typechecks
 */

var _hyphenPattern = /-(.)/g;

/**
 * Camelcases a hyphenated string, for example:
 *
 *   > camelize('background-color')
 *   < "backgroundColor"
 *
 * @param {string} string
 * @return {string}
 */
function camelize(string) {
  return string.replace(_hyphenPattern, function(_, character) {
    return character.toUpperCase();
  });
}

module.exports = camelize;

},{}],219:[function(require,module,exports){
/**
 * Copyright 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule camelizeStyleName
 * @typechecks
 */

"use strict";

var camelize = require("./camelize");

var msPattern = /^-ms-/;

/**
 * Camelcases a hyphenated CSS property name, for example:
 *
 *   > camelizeStyleName('background-color')
 *   < "backgroundColor"
 *   > camelizeStyleName('-moz-transition')
 *   < "MozTransition"
 *   > camelizeStyleName('-ms-transition')
 *   < "msTransition"
 *
 * As Andi Smith suggests
 * (http://www.andismith.com/blog/2012/02/modernizr-prefixed/), an `-ms` prefix
 * is converted to lowercase `ms`.
 *
 * @param {string} string
 * @return {string}
 */
function camelizeStyleName(string) {
  return camelize(string.replace(msPattern, 'ms-'));
}

module.exports = camelizeStyleName;

},{"./camelize":218}],220:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @typechecks
 * @providesModule cloneWithProps
 */

"use strict";

var ReactElement = require("./ReactElement");
var ReactPropTransferer = require("./ReactPropTransferer");

var keyOf = require("./keyOf");
var warning = require("./warning");

var CHILDREN_PROP = keyOf({children: null});

/**
 * Sometimes you want to change the props of a child passed to you. Usually
 * this is to add a CSS class.
 *
 * @param {object} child child component you'd like to clone
 * @param {object} props props you'd like to modify. They will be merged
 * as if you used `transferPropsTo()`.
 * @return {object} a clone of child with props merged in.
 */
function cloneWithProps(child, props) {
  if ("production" !== process.env.NODE_ENV) {
    ("production" !== process.env.NODE_ENV ? warning(
      !child.ref,
      'You are calling cloneWithProps() on a child with a ref. This is ' +
      'dangerous because you\'re creating a new child which will not be ' +
      'added as a ref to its parent.'
    ) : null);
  }

  var newProps = ReactPropTransferer.mergeProps(props, child.props);

  // Use `child.props.children` if it is provided.
  if (!newProps.hasOwnProperty(CHILDREN_PROP) &&
      child.props.hasOwnProperty(CHILDREN_PROP)) {
    newProps.children = child.props.children;
  }

  // The current API doesn't retain _owner and _context, which is why this
  // doesn't use ReactElement.cloneAndReplaceProps.
  return ReactElement.createElement(child.type, newProps);
}

module.exports = cloneWithProps;

}).call(this,require('_process'))
},{"./ReactElement":164,"./ReactPropTransferer":182,"./keyOf":254,"./warning":267,"_process":91}],221:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule containsNode
 * @typechecks
 */

var isTextNode = require("./isTextNode");

/*jslint bitwise:true */

/**
 * Checks if a given DOM node contains or is another DOM node.
 *
 * @param {?DOMNode} outerNode Outer DOM node.
 * @param {?DOMNode} innerNode Inner DOM node.
 * @return {boolean} True if `outerNode` contains or is `innerNode`.
 */
function containsNode(outerNode, innerNode) {
  if (!outerNode || !innerNode) {
    return false;
  } else if (outerNode === innerNode) {
    return true;
  } else if (isTextNode(outerNode)) {
    return false;
  } else if (isTextNode(innerNode)) {
    return containsNode(outerNode, innerNode.parentNode);
  } else if (outerNode.contains) {
    return outerNode.contains(innerNode);
  } else if (outerNode.compareDocumentPosition) {
    return !!(outerNode.compareDocumentPosition(innerNode) & 16);
  } else {
    return false;
  }
}

module.exports = containsNode;

},{"./isTextNode":251}],222:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule createArrayFrom
 * @typechecks
 */

var toArray = require("./toArray");

/**
 * Perform a heuristic test to determine if an object is "array-like".
 *
 *   A monk asked Joshu, a Zen master, "Has a dog Buddha nature?"
 *   Joshu replied: "Mu."
 *
 * This function determines if its argument has "array nature": it returns
 * true if the argument is an actual array, an `arguments' object, or an
 * HTMLCollection (e.g. node.childNodes or node.getElementsByTagName()).
 *
 * It will return false for other array-like objects like Filelist.
 *
 * @param {*} obj
 * @return {boolean}
 */
function hasArrayNature(obj) {
  return (
    // not null/false
    !!obj &&
    // arrays are objects, NodeLists are functions in Safari
    (typeof obj == 'object' || typeof obj == 'function') &&
    // quacks like an array
    ('length' in obj) &&
    // not window
    !('setInterval' in obj) &&
    // no DOM node should be considered an array-like
    // a 'select' element has 'length' and 'item' properties on IE8
    (typeof obj.nodeType != 'number') &&
    (
      // a real array
      (// HTMLCollection/NodeList
      (Array.isArray(obj) ||
      // arguments
      ('callee' in obj) || 'item' in obj))
    )
  );
}

/**
 * Ensure that the argument is an array by wrapping it in an array if it is not.
 * Creates a copy of the argument if it is already an array.
 *
 * This is mostly useful idiomatically:
 *
 *   var createArrayFrom = require('createArrayFrom');
 *
 *   function takesOneOrMoreThings(things) {
 *     things = createArrayFrom(things);
 *     ...
 *   }
 *
 * This allows you to treat `things' as an array, but accept scalars in the API.
 *
 * If you need to convert an array-like object, like `arguments`, into an array
 * use toArray instead.
 *
 * @param {*} obj
 * @return {array}
 */
function createArrayFrom(obj) {
  if (!hasArrayNature(obj)) {
    return [obj];
  } else if (Array.isArray(obj)) {
    return obj.slice();
  } else {
    return toArray(obj);
  }
}

module.exports = createArrayFrom;

},{"./toArray":264}],223:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule createFullPageComponent
 * @typechecks
 */

"use strict";

// Defeat circular references by requiring this directly.
var ReactCompositeComponent = require("./ReactCompositeComponent");
var ReactElement = require("./ReactElement");

var invariant = require("./invariant");

/**
 * Create a component that will throw an exception when unmounted.
 *
 * Components like <html> <head> and <body> can't be removed or added
 * easily in a cross-browser way, however it's valuable to be able to
 * take advantage of React's reconciliation for styling and <title>
 * management. So we just document it and throw in dangerous cases.
 *
 * @param {string} tag The tag to wrap
 * @return {function} convenience constructor of new component
 */
function createFullPageComponent(tag) {
  var elementFactory = ReactElement.createFactory(tag);

  var FullPageComponent = ReactCompositeComponent.createClass({
    displayName: 'ReactFullPageComponent' + tag,

    componentWillUnmount: function() {
      ("production" !== process.env.NODE_ENV ? invariant(
        false,
        '%s tried to unmount. Because of cross-browser quirks it is ' +
        'impossible to unmount some top-level components (eg <html>, <head>, ' +
        'and <body>) reliably and efficiently. To fix this, have a single ' +
        'top-level component that never unmounts render these elements.',
        this.constructor.displayName
      ) : invariant(false));
    },

    render: function() {
      return elementFactory(this.props);
    }
  });

  return FullPageComponent;
}

module.exports = createFullPageComponent;

}).call(this,require('_process'))
},{"./ReactCompositeComponent":146,"./ReactElement":164,"./invariant":247,"_process":91}],224:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule createNodesFromMarkup
 * @typechecks
 */

/*jslint evil: true, sub: true */

var ExecutionEnvironment = require("./ExecutionEnvironment");

var createArrayFrom = require("./createArrayFrom");
var getMarkupWrap = require("./getMarkupWrap");
var invariant = require("./invariant");

/**
 * Dummy container used to render all markup.
 */
var dummyNode =
  ExecutionEnvironment.canUseDOM ? document.createElement('div') : null;

/**
 * Pattern used by `getNodeName`.
 */
var nodeNamePattern = /^\s*<(\w+)/;

/**
 * Extracts the `nodeName` of the first element in a string of markup.
 *
 * @param {string} markup String of markup.
 * @return {?string} Node name of the supplied markup.
 */
function getNodeName(markup) {
  var nodeNameMatch = markup.match(nodeNamePattern);
  return nodeNameMatch && nodeNameMatch[1].toLowerCase();
}

/**
 * Creates an array containing the nodes rendered from the supplied markup. The
 * optionally supplied `handleScript` function will be invoked once for each
 * <script> element that is rendered. If no `handleScript` function is supplied,
 * an exception is thrown if any <script> elements are rendered.
 *
 * @param {string} markup A string of valid HTML markup.
 * @param {?function} handleScript Invoked once for each rendered <script>.
 * @return {array<DOMElement|DOMTextNode>} An array of rendered nodes.
 */
function createNodesFromMarkup(markup, handleScript) {
  var node = dummyNode;
  ("production" !== process.env.NODE_ENV ? invariant(!!dummyNode, 'createNodesFromMarkup dummy not initialized') : invariant(!!dummyNode));
  var nodeName = getNodeName(markup);

  var wrap = nodeName && getMarkupWrap(nodeName);
  if (wrap) {
    node.innerHTML = wrap[1] + markup + wrap[2];

    var wrapDepth = wrap[0];
    while (wrapDepth--) {
      node = node.lastChild;
    }
  } else {
    node.innerHTML = markup;
  }

  var scripts = node.getElementsByTagName('script');
  if (scripts.length) {
    ("production" !== process.env.NODE_ENV ? invariant(
      handleScript,
      'createNodesFromMarkup(...): Unexpected <script> element rendered.'
    ) : invariant(handleScript));
    createArrayFrom(scripts).forEach(handleScript);
  }

  var nodes = createArrayFrom(node.childNodes);
  while (node.lastChild) {
    node.removeChild(node.lastChild);
  }
  return nodes;
}

module.exports = createNodesFromMarkup;

}).call(this,require('_process'))
},{"./ExecutionEnvironment":129,"./createArrayFrom":222,"./getMarkupWrap":239,"./invariant":247,"_process":91}],225:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule cx
 */

/**
 * This function is used to mark string literals representing CSS class names
 * so that they can be transformed statically. This allows for modularization
 * and minification of CSS class names.
 *
 * In static_upstream, this function is actually implemented, but it should
 * eventually be replaced with something more descriptive, and the transform
 * that is used in the main stack should be ported for use elsewhere.
 *
 * @param string|object className to modularize, or an object of key/values.
 *                      In the object case, the values are conditions that
 *                      determine if the className keys should be included.
 * @param [string ...]  Variable list of classNames in the string case.
 * @return string       Renderable space-separated CSS className.
 */
function cx(classNames) {
  if (typeof classNames == 'object') {
    return Object.keys(classNames).filter(function(className) {
      return classNames[className];
    }).join(' ');
  } else {
    return Array.prototype.join.call(arguments, ' ');
  }
}

module.exports = cx;

},{}],226:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule dangerousStyleValue
 * @typechecks static-only
 */

"use strict";

var CSSProperty = require("./CSSProperty");

var isUnitlessNumber = CSSProperty.isUnitlessNumber;

/**
 * Convert a value into the proper css writable value. The style name `name`
 * should be logical (no hyphens), as specified
 * in `CSSProperty.isUnitlessNumber`.
 *
 * @param {string} name CSS property name such as `topMargin`.
 * @param {*} value CSS property value such as `10px`.
 * @return {string} Normalized style value with dimensions applied.
 */
function dangerousStyleValue(name, value) {
  // Note that we've removed escapeTextForBrowser() calls here since the
  // whole string will be escaped when the attribute is injected into
  // the markup. If you provide unsafe user data here they can inject
  // arbitrary CSS which may be problematic (I couldn't repro this):
  // https://www.owasp.org/index.php/XSS_Filter_Evasion_Cheat_Sheet
  // http://www.thespanner.co.uk/2007/11/26/ultimate-xss-css-injection/
  // This is not an XSS hole but instead a potential CSS injection issue
  // which has lead to a greater discussion about how we're going to
  // trust URLs moving forward. See #2115901

  var isEmpty = value == null || typeof value === 'boolean' || value === '';
  if (isEmpty) {
    return '';
  }

  var isNonNumeric = isNaN(value);
  if (isNonNumeric || value === 0 ||
      isUnitlessNumber.hasOwnProperty(name) && isUnitlessNumber[name]) {
    return '' + value; // cast to string
  }

  if (typeof value === 'string') {
    value = value.trim();
  }
  return value + 'px';
}

module.exports = dangerousStyleValue;

},{"./CSSProperty":111}],227:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule deprecated
 */

var assign = require("./Object.assign");
var warning = require("./warning");

/**
 * This will log a single deprecation notice per function and forward the call
 * on to the new API.
 *
 * @param {string} namespace The namespace of the call, eg 'React'
 * @param {string} oldName The old function name, eg 'renderComponent'
 * @param {string} newName The new function name, eg 'render'
 * @param {*} ctx The context this forwarded call should run in
 * @param {function} fn The function to forward on to
 * @return {*} Will be the value as returned from `fn`
 */
function deprecated(namespace, oldName, newName, ctx, fn) {
  var warned = false;
  if ("production" !== process.env.NODE_ENV) {
    var newFn = function() {
      ("production" !== process.env.NODE_ENV ? warning(
        warned,
        (namespace + "." + oldName + " will be deprecated in a future version. ") +
        ("Use " + namespace + "." + newName + " instead.")
      ) : null);
      warned = true;
      return fn.apply(ctx, arguments);
    };
    newFn.displayName = (namespace + "_" + oldName);
    // We need to make sure all properties of the original fn are copied over.
    // In particular, this is needed to support PropTypes
    return assign(newFn, fn);
  }

  return fn;
}

module.exports = deprecated;

}).call(this,require('_process'))
},{"./Object.assign":135,"./warning":267,"_process":91}],228:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule emptyFunction
 */

function makeEmptyFunction(arg) {
  return function() {
    return arg;
  };
}

/**
 * This function accepts and discards inputs; it has no side effects. This is
 * primarily useful idiomatically for overridable function endpoints which
 * always need to be callable, since JS lacks a null-call idiom ala Cocoa.
 */
function emptyFunction() {}

emptyFunction.thatReturns = makeEmptyFunction;
emptyFunction.thatReturnsFalse = makeEmptyFunction(false);
emptyFunction.thatReturnsTrue = makeEmptyFunction(true);
emptyFunction.thatReturnsNull = makeEmptyFunction(null);
emptyFunction.thatReturnsThis = function() { return this; };
emptyFunction.thatReturnsArgument = function(arg) { return arg; };

module.exports = emptyFunction;

},{}],229:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule emptyObject
 */

"use strict";

var emptyObject = {};

if ("production" !== process.env.NODE_ENV) {
  Object.freeze(emptyObject);
}

module.exports = emptyObject;

}).call(this,require('_process'))
},{"_process":91}],230:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule escapeTextForBrowser
 * @typechecks static-only
 */

"use strict";

var ESCAPE_LOOKUP = {
  "&": "&amp;",
  ">": "&gt;",
  "<": "&lt;",
  "\"": "&quot;",
  "'": "&#x27;"
};

var ESCAPE_REGEX = /[&><"']/g;

function escaper(match) {
  return ESCAPE_LOOKUP[match];
}

/**
 * Escapes text to prevent scripting attacks.
 *
 * @param {*} text Text value to escape.
 * @return {string} An escaped string.
 */
function escapeTextForBrowser(text) {
  return ('' + text).replace(ESCAPE_REGEX, escaper);
}

module.exports = escapeTextForBrowser;

},{}],231:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule flattenChildren
 */

"use strict";

var ReactTextComponent = require("./ReactTextComponent");

var traverseAllChildren = require("./traverseAllChildren");
var warning = require("./warning");

/**
 * @param {function} traverseContext Context passed through traversal.
 * @param {?ReactComponent} child React child component.
 * @param {!string} name String name of key path to child.
 */
function flattenSingleChildIntoContext(traverseContext, child, name) {
  // We found a component instance.
  var result = traverseContext;
  var keyUnique = !result.hasOwnProperty(name);
  ("production" !== process.env.NODE_ENV ? warning(
    keyUnique,
    'flattenChildren(...): Encountered two children with the same key, ' +
    '`%s`. Child keys must be unique; when two children share a key, only ' +
    'the first child will be used.',
    name
  ) : null);
  if (keyUnique && child != null) {
    var type = typeof child;
    var normalizedValue;

    if (type === 'string') {
      normalizedValue = ReactTextComponent(child);
    } else if (type === 'number') {
      normalizedValue = ReactTextComponent('' + child);
    } else {
      normalizedValue = child;
    }

    result[name] = normalizedValue;
  }
}

/**
 * Flattens children that are typically specified as `props.children`. Any null
 * children will not be included in the resulting object.
 * @return {!object} flattened children keyed by name.
 */
function flattenChildren(children) {
  if (children == null) {
    return children;
  }
  var result = {};
  traverseAllChildren(children, flattenSingleChildIntoContext, result);
  return result;
}

module.exports = flattenChildren;

}).call(this,require('_process'))
},{"./ReactTextComponent":193,"./traverseAllChildren":265,"./warning":267,"_process":91}],232:[function(require,module,exports){
/**
 * Copyright 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule focusNode
 */

"use strict";

/**
 * @param {DOMElement} node input/textarea to focus
 */
function focusNode(node) {
  // IE8 can throw "Can't move focus to the control because it is invisible,
  // not enabled, or of a type that does not accept the focus." for all kinds of
  // reasons that are too expensive and fragile to test.
  try {
    node.focus();
  } catch(e) {
  }
}

module.exports = focusNode;

},{}],233:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule forEachAccumulated
 */

"use strict";

/**
 * @param {array} an "accumulation" of items which is either an Array or
 * a single item. Useful when paired with the `accumulate` module. This is a
 * simple utility that allows us to reason about a collection of items, but
 * handling the case when there is exactly one item (and we do not need to
 * allocate an array).
 */
var forEachAccumulated = function(arr, cb, scope) {
  if (Array.isArray(arr)) {
    arr.forEach(cb, scope);
  } else if (arr) {
    cb.call(scope, arr);
  }
};

module.exports = forEachAccumulated;

},{}],234:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule getActiveElement
 * @typechecks
 */

/**
 * Same as document.activeElement but wraps in a try-catch block. In IE it is
 * not safe to call document.activeElement if there is nothing focused.
 *
 * The activeElement will be null only if the document body is not yet defined.
 */
function getActiveElement() /*?DOMElement*/ {
  try {
    return document.activeElement || document.body;
  } catch (e) {
    return document.body;
  }
}

module.exports = getActiveElement;

},{}],235:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule getEventCharCode
 * @typechecks static-only
 */

"use strict";

/**
 * `charCode` represents the actual "character code" and is safe to use with
 * `String.fromCharCode`. As such, only keys that correspond to printable
 * characters produce a valid `charCode`, the only exception to this is Enter.
 * The Tab-key is considered non-printable and does not have a `charCode`,
 * presumably because it does not produce a tab-character in browsers.
 *
 * @param {object} nativeEvent Native browser event.
 * @return {string} Normalized `charCode` property.
 */
function getEventCharCode(nativeEvent) {
  var charCode;
  var keyCode = nativeEvent.keyCode;

  if ('charCode' in nativeEvent) {
    charCode = nativeEvent.charCode;

    // FF does not set `charCode` for the Enter-key, check against `keyCode`.
    if (charCode === 0 && keyCode === 13) {
      charCode = 13;
    }
  } else {
    // IE8 does not implement `charCode`, but `keyCode` has the correct value.
    charCode = keyCode;
  }

  // Some non-printable keys are reported in `charCode`/`keyCode`, discard them.
  // Must not discard the (non-)printable Enter-key.
  if (charCode >= 32 || charCode === 13) {
    return charCode;
  }

  return 0;
}

module.exports = getEventCharCode;

},{}],236:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule getEventKey
 * @typechecks static-only
 */

"use strict";

var getEventCharCode = require("./getEventCharCode");

/**
 * Normalization of deprecated HTML5 `key` values
 * @see https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent#Key_names
 */
var normalizeKey = {
  'Esc': 'Escape',
  'Spacebar': ' ',
  'Left': 'ArrowLeft',
  'Up': 'ArrowUp',
  'Right': 'ArrowRight',
  'Down': 'ArrowDown',
  'Del': 'Delete',
  'Win': 'OS',
  'Menu': 'ContextMenu',
  'Apps': 'ContextMenu',
  'Scroll': 'ScrollLock',
  'MozPrintableKey': 'Unidentified'
};

/**
 * Translation from legacy `keyCode` to HTML5 `key`
 * Only special keys supported, all others depend on keyboard layout or browser
 * @see https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent#Key_names
 */
var translateToKey = {
  8: 'Backspace',
  9: 'Tab',
  12: 'Clear',
  13: 'Enter',
  16: 'Shift',
  17: 'Control',
  18: 'Alt',
  19: 'Pause',
  20: 'CapsLock',
  27: 'Escape',
  32: ' ',
  33: 'PageUp',
  34: 'PageDown',
  35: 'End',
  36: 'Home',
  37: 'ArrowLeft',
  38: 'ArrowUp',
  39: 'ArrowRight',
  40: 'ArrowDown',
  45: 'Insert',
  46: 'Delete',
  112: 'F1', 113: 'F2', 114: 'F3', 115: 'F4', 116: 'F5', 117: 'F6',
  118: 'F7', 119: 'F8', 120: 'F9', 121: 'F10', 122: 'F11', 123: 'F12',
  144: 'NumLock',
  145: 'ScrollLock',
  224: 'Meta'
};

/**
 * @param {object} nativeEvent Native browser event.
 * @return {string} Normalized `key` property.
 */
function getEventKey(nativeEvent) {
  if (nativeEvent.key) {
    // Normalize inconsistent values reported by browsers due to
    // implementations of a working draft specification.

    // FireFox implements `key` but returns `MozPrintableKey` for all
    // printable characters (normalized to `Unidentified`), ignore it.
    var key = normalizeKey[nativeEvent.key] || nativeEvent.key;
    if (key !== 'Unidentified') {
      return key;
    }
  }

  // Browser does not implement `key`, polyfill as much of it as we can.
  if (nativeEvent.type === 'keypress') {
    var charCode = getEventCharCode(nativeEvent);

    // The enter-key is technically both printable and non-printable and can
    // thus be captured by `keypress`, no other non-printable key should.
    return charCode === 13 ? 'Enter' : String.fromCharCode(charCode);
  }
  if (nativeEvent.type === 'keydown' || nativeEvent.type === 'keyup') {
    // While user keyboard layout determines the actual meaning of each
    // `keyCode` value, almost all function keys have a universal value.
    return translateToKey[nativeEvent.keyCode] || 'Unidentified';
  }
  return '';
}

module.exports = getEventKey;

},{"./getEventCharCode":235}],237:[function(require,module,exports){
/**
 * Copyright 2013 Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule getEventModifierState
 * @typechecks static-only
 */

"use strict";

/**
 * Translation from modifier key to the associated property in the event.
 * @see http://www.w3.org/TR/DOM-Level-3-Events/#keys-Modifiers
 */

var modifierKeyToProp = {
  'Alt': 'altKey',
  'Control': 'ctrlKey',
  'Meta': 'metaKey',
  'Shift': 'shiftKey'
};

// IE8 does not implement getModifierState so we simply map it to the only
// modifier keys exposed by the event itself, does not support Lock-keys.
// Currently, all major browsers except Chrome seems to support Lock-keys.
function modifierStateGetter(keyArg) {
  /*jshint validthis:true */
  var syntheticEvent = this;
  var nativeEvent = syntheticEvent.nativeEvent;
  if (nativeEvent.getModifierState) {
    return nativeEvent.getModifierState(keyArg);
  }
  var keyProp = modifierKeyToProp[keyArg];
  return keyProp ? !!nativeEvent[keyProp] : false;
}

function getEventModifierState(nativeEvent) {
  return modifierStateGetter;
}

module.exports = getEventModifierState;

},{}],238:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule getEventTarget
 * @typechecks static-only
 */

"use strict";

/**
 * Gets the target node from a native browser event by accounting for
 * inconsistencies in browser DOM APIs.
 *
 * @param {object} nativeEvent Native browser event.
 * @return {DOMEventTarget} Target node.
 */
function getEventTarget(nativeEvent) {
  var target = nativeEvent.target || nativeEvent.srcElement || window;
  // Safari may fire events on text nodes (Node.TEXT_NODE is 3).
  // @see http://www.quirksmode.org/js/events_properties.html
  return target.nodeType === 3 ? target.parentNode : target;
}

module.exports = getEventTarget;

},{}],239:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule getMarkupWrap
 */

var ExecutionEnvironment = require("./ExecutionEnvironment");

var invariant = require("./invariant");

/**
 * Dummy container used to detect which wraps are necessary.
 */
var dummyNode =
  ExecutionEnvironment.canUseDOM ? document.createElement('div') : null;

/**
 * Some browsers cannot use `innerHTML` to render certain elements standalone,
 * so we wrap them, render the wrapped nodes, then extract the desired node.
 *
 * In IE8, certain elements cannot render alone, so wrap all elements ('*').
 */
var shouldWrap = {
  // Force wrapping for SVG elements because if they get created inside a <div>,
  // they will be initialized in the wrong namespace (and will not display).
  'circle': true,
  'defs': true,
  'ellipse': true,
  'g': true,
  'line': true,
  'linearGradient': true,
  'path': true,
  'polygon': true,
  'polyline': true,
  'radialGradient': true,
  'rect': true,
  'stop': true,
  'text': true
};

var selectWrap = [1, '<select multiple="true">', '</select>'];
var tableWrap = [1, '<table>', '</table>'];
var trWrap = [3, '<table><tbody><tr>', '</tr></tbody></table>'];

var svgWrap = [1, '<svg>', '</svg>'];

var markupWrap = {
  '*': [1, '?<div>', '</div>'],

  'area': [1, '<map>', '</map>'],
  'col': [2, '<table><tbody></tbody><colgroup>', '</colgroup></table>'],
  'legend': [1, '<fieldset>', '</fieldset>'],
  'param': [1, '<object>', '</object>'],
  'tr': [2, '<table><tbody>', '</tbody></table>'],

  'optgroup': selectWrap,
  'option': selectWrap,

  'caption': tableWrap,
  'colgroup': tableWrap,
  'tbody': tableWrap,
  'tfoot': tableWrap,
  'thead': tableWrap,

  'td': trWrap,
  'th': trWrap,

  'circle': svgWrap,
  'defs': svgWrap,
  'ellipse': svgWrap,
  'g': svgWrap,
  'line': svgWrap,
  'linearGradient': svgWrap,
  'path': svgWrap,
  'polygon': svgWrap,
  'polyline': svgWrap,
  'radialGradient': svgWrap,
  'rect': svgWrap,
  'stop': svgWrap,
  'text': svgWrap
};

/**
 * Gets the markup wrap configuration for the supplied `nodeName`.
 *
 * NOTE: This lazily detects which wraps are necessary for the current browser.
 *
 * @param {string} nodeName Lowercase `nodeName`.
 * @return {?array} Markup wrap configuration, if applicable.
 */
function getMarkupWrap(nodeName) {
  ("production" !== process.env.NODE_ENV ? invariant(!!dummyNode, 'Markup wrapping node not initialized') : invariant(!!dummyNode));
  if (!markupWrap.hasOwnProperty(nodeName)) {
    nodeName = '*';
  }
  if (!shouldWrap.hasOwnProperty(nodeName)) {
    if (nodeName === '*') {
      dummyNode.innerHTML = '<link />';
    } else {
      dummyNode.innerHTML = '<' + nodeName + '></' + nodeName + '>';
    }
    shouldWrap[nodeName] = !dummyNode.firstChild;
  }
  return shouldWrap[nodeName] ? markupWrap[nodeName] : null;
}


module.exports = getMarkupWrap;

}).call(this,require('_process'))
},{"./ExecutionEnvironment":129,"./invariant":247,"_process":91}],240:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule getNodeForCharacterOffset
 */

"use strict";

/**
 * Given any node return the first leaf node without children.
 *
 * @param {DOMElement|DOMTextNode} node
 * @return {DOMElement|DOMTextNode}
 */
function getLeafNode(node) {
  while (node && node.firstChild) {
    node = node.firstChild;
  }
  return node;
}

/**
 * Get the next sibling within a container. This will walk up the
 * DOM if a node's siblings have been exhausted.
 *
 * @param {DOMElement|DOMTextNode} node
 * @return {?DOMElement|DOMTextNode}
 */
function getSiblingNode(node) {
  while (node) {
    if (node.nextSibling) {
      return node.nextSibling;
    }
    node = node.parentNode;
  }
}

/**
 * Get object describing the nodes which contain characters at offset.
 *
 * @param {DOMElement|DOMTextNode} root
 * @param {number} offset
 * @return {?object}
 */
function getNodeForCharacterOffset(root, offset) {
  var node = getLeafNode(root);
  var nodeStart = 0;
  var nodeEnd = 0;

  while (node) {
    if (node.nodeType == 3) {
      nodeEnd = nodeStart + node.textContent.length;

      if (nodeStart <= offset && nodeEnd >= offset) {
        return {
          node: node,
          offset: offset - nodeStart
        };
      }

      nodeStart = nodeEnd;
    }

    node = getLeafNode(getSiblingNode(node));
  }
}

module.exports = getNodeForCharacterOffset;

},{}],241:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule getReactRootElementInContainer
 */

"use strict";

var DOC_NODE_TYPE = 9;

/**
 * @param {DOMElement|DOMDocument} container DOM element that may contain
 *                                           a React component
 * @return {?*} DOM element that may have the reactRoot ID, or null.
 */
function getReactRootElementInContainer(container) {
  if (!container) {
    return null;
  }

  if (container.nodeType === DOC_NODE_TYPE) {
    return container.documentElement;
  } else {
    return container.firstChild;
  }
}

module.exports = getReactRootElementInContainer;

},{}],242:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule getTextContentAccessor
 */

"use strict";

var ExecutionEnvironment = require("./ExecutionEnvironment");

var contentKey = null;

/**
 * Gets the key used to access text content on a DOM node.
 *
 * @return {?string} Key used to access text content.
 * @internal
 */
function getTextContentAccessor() {
  if (!contentKey && ExecutionEnvironment.canUseDOM) {
    // Prefer textContent to innerText because many browsers support both but
    // SVG <text> elements don't support innerText even when <div> does.
    contentKey = 'textContent' in document.documentElement ?
      'textContent' :
      'innerText';
  }
  return contentKey;
}

module.exports = getTextContentAccessor;

},{"./ExecutionEnvironment":129}],243:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule getUnboundedScrollPosition
 * @typechecks
 */

"use strict";

/**
 * Gets the scroll position of the supplied element or window.
 *
 * The return values are unbounded, unlike `getScrollPosition`. This means they
 * may be negative or exceed the element boundaries (which is possible using
 * inertial scrolling).
 *
 * @param {DOMWindow|DOMElement} scrollable
 * @return {object} Map with `x` and `y` keys.
 */
function getUnboundedScrollPosition(scrollable) {
  if (scrollable === window) {
    return {
      x: window.pageXOffset || document.documentElement.scrollLeft,
      y: window.pageYOffset || document.documentElement.scrollTop
    };
  }
  return {
    x: scrollable.scrollLeft,
    y: scrollable.scrollTop
  };
}

module.exports = getUnboundedScrollPosition;

},{}],244:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule hyphenate
 * @typechecks
 */

var _uppercasePattern = /([A-Z])/g;

/**
 * Hyphenates a camelcased string, for example:
 *
 *   > hyphenate('backgroundColor')
 *   < "background-color"
 *
 * For CSS style names, use `hyphenateStyleName` instead which works properly
 * with all vendor prefixes, including `ms`.
 *
 * @param {string} string
 * @return {string}
 */
function hyphenate(string) {
  return string.replace(_uppercasePattern, '-$1').toLowerCase();
}

module.exports = hyphenate;

},{}],245:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule hyphenateStyleName
 * @typechecks
 */

"use strict";

var hyphenate = require("./hyphenate");

var msPattern = /^ms-/;

/**
 * Hyphenates a camelcased CSS property name, for example:
 *
 *   > hyphenateStyleName('backgroundColor')
 *   < "background-color"
 *   > hyphenateStyleName('MozTransition')
 *   < "-moz-transition"
 *   > hyphenateStyleName('msTransition')
 *   < "-ms-transition"
 *
 * As Modernizr suggests (http://modernizr.com/docs/#prefixed), an `ms` prefix
 * is converted to `-ms-`.
 *
 * @param {string} string
 * @return {string}
 */
function hyphenateStyleName(string) {
  return hyphenate(string).replace(msPattern, '-ms-');
}

module.exports = hyphenateStyleName;

},{"./hyphenate":244}],246:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule instantiateReactComponent
 * @typechecks static-only
 */

"use strict";

var warning = require("./warning");

var ReactElement = require("./ReactElement");
var ReactLegacyElement = require("./ReactLegacyElement");
var ReactNativeComponent = require("./ReactNativeComponent");
var ReactEmptyComponent = require("./ReactEmptyComponent");

/**
 * Given an `element` create an instance that will actually be mounted.
 *
 * @param {object} element
 * @param {*} parentCompositeType The composite type that resolved this.
 * @return {object} A new instance of the element's constructor.
 * @protected
 */
function instantiateReactComponent(element, parentCompositeType) {
  var instance;

  if ("production" !== process.env.NODE_ENV) {
    ("production" !== process.env.NODE_ENV ? warning(
      element && (typeof element.type === 'function' ||
                     typeof element.type === 'string'),
      'Only functions or strings can be mounted as React components.'
    ) : null);

    // Resolve mock instances
    if (element.type._mockedReactClassConstructor) {
      // If this is a mocked class, we treat the legacy factory as if it was the
      // class constructor for future proofing unit tests. Because this might
      // be mocked as a legacy factory, we ignore any warnings triggerd by
      // this temporary hack.
      ReactLegacyElement._isLegacyCallWarningEnabled = false;
      try {
        instance = new element.type._mockedReactClassConstructor(
          element.props
        );
      } finally {
        ReactLegacyElement._isLegacyCallWarningEnabled = true;
      }

      // If the mock implementation was a legacy factory, then it returns a
      // element. We need to turn this into a real component instance.
      if (ReactElement.isValidElement(instance)) {
        instance = new instance.type(instance.props);
      }

      var render = instance.render;
      if (!render) {
        // For auto-mocked factories, the prototype isn't shimmed and therefore
        // there is no render function on the instance. We replace the whole
        // component with an empty component instance instead.
        element = ReactEmptyComponent.getEmptyComponent();
      } else {
        if (render._isMockFunction && !render._getMockImplementation()) {
          // Auto-mocked components may have a prototype with a mocked render
          // function. For those, we'll need to mock the result of the render
          // since we consider undefined to be invalid results from render.
          render.mockImplementation(
            ReactEmptyComponent.getEmptyComponent
          );
        }
        instance.construct(element);
        return instance;
      }
    }
  }

  // Special case string values
  if (typeof element.type === 'string') {
    instance = ReactNativeComponent.createInstanceForTag(
      element.type,
      element.props,
      parentCompositeType
    );
  } else {
    // Normal case for non-mocks and non-strings
    instance = new element.type(element.props);
  }

  if ("production" !== process.env.NODE_ENV) {
    ("production" !== process.env.NODE_ENV ? warning(
      typeof instance.construct === 'function' &&
      typeof instance.mountComponent === 'function' &&
      typeof instance.receiveComponent === 'function',
      'Only React Components can be mounted.'
    ) : null);
  }

  // This actually sets up the internal instance. This will become decoupled
  // from the public instance in a future diff.
  instance.construct(element);

  return instance;
}

module.exports = instantiateReactComponent;

}).call(this,require('_process'))
},{"./ReactElement":164,"./ReactEmptyComponent":166,"./ReactLegacyElement":173,"./ReactNativeComponent":179,"./warning":267,"_process":91}],247:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule invariant
 */

"use strict";

/**
 * Use invariant() to assert state which your program assumes to be true.
 *
 * Provide sprintf-style format (only %s is supported) and arguments
 * to provide information about what broke and what you were
 * expecting.
 *
 * The invariant message will be stripped in production, but the invariant
 * will remain to ensure logic does not differ in production.
 */

var invariant = function(condition, format, a, b, c, d, e, f) {
  if ("production" !== process.env.NODE_ENV) {
    if (format === undefined) {
      throw new Error('invariant requires an error message argument');
    }
  }

  if (!condition) {
    var error;
    if (format === undefined) {
      error = new Error(
        'Minified exception occurred; use the non-minified dev environment ' +
        'for the full error message and additional helpful warnings.'
      );
    } else {
      var args = [a, b, c, d, e, f];
      var argIndex = 0;
      error = new Error(
        'Invariant Violation: ' +
        format.replace(/%s/g, function() { return args[argIndex++]; })
      );
    }

    error.framesToPop = 1; // we don't care about invariant's own frame
    throw error;
  }
};

module.exports = invariant;

}).call(this,require('_process'))
},{"_process":91}],248:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule isEventSupported
 */

"use strict";

var ExecutionEnvironment = require("./ExecutionEnvironment");

var useHasFeature;
if (ExecutionEnvironment.canUseDOM) {
  useHasFeature =
    document.implementation &&
    document.implementation.hasFeature &&
    // always returns true in newer browsers as per the standard.
    // @see http://dom.spec.whatwg.org/#dom-domimplementation-hasfeature
    document.implementation.hasFeature('', '') !== true;
}

/**
 * Checks if an event is supported in the current execution environment.
 *
 * NOTE: This will not work correctly for non-generic events such as `change`,
 * `reset`, `load`, `error`, and `select`.
 *
 * Borrows from Modernizr.
 *
 * @param {string} eventNameSuffix Event name, e.g. "click".
 * @param {?boolean} capture Check if the capture phase is supported.
 * @return {boolean} True if the event is supported.
 * @internal
 * @license Modernizr 3.0.0pre (Custom Build) | MIT
 */
function isEventSupported(eventNameSuffix, capture) {
  if (!ExecutionEnvironment.canUseDOM ||
      capture && !('addEventListener' in document)) {
    return false;
  }

  var eventName = 'on' + eventNameSuffix;
  var isSupported = eventName in document;

  if (!isSupported) {
    var element = document.createElement('div');
    element.setAttribute(eventName, 'return;');
    isSupported = typeof element[eventName] === 'function';
  }

  if (!isSupported && useHasFeature && eventNameSuffix === 'wheel') {
    // This is the only way to test support for the `wheel` event in IE9+.
    isSupported = document.implementation.hasFeature('Events.wheel', '3.0');
  }

  return isSupported;
}

module.exports = isEventSupported;

},{"./ExecutionEnvironment":129}],249:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule isNode
 * @typechecks
 */

/**
 * @param {*} object The object to check.
 * @return {boolean} Whether or not the object is a DOM node.
 */
function isNode(object) {
  return !!(object && (
    typeof Node === 'function' ? object instanceof Node :
      typeof object === 'object' &&
      typeof object.nodeType === 'number' &&
      typeof object.nodeName === 'string'
  ));
}

module.exports = isNode;

},{}],250:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule isTextInputElement
 */

"use strict";

/**
 * @see http://www.whatwg.org/specs/web-apps/current-work/multipage/the-input-element.html#input-type-attr-summary
 */
var supportedInputTypes = {
  'color': true,
  'date': true,
  'datetime': true,
  'datetime-local': true,
  'email': true,
  'month': true,
  'number': true,
  'password': true,
  'range': true,
  'search': true,
  'tel': true,
  'text': true,
  'time': true,
  'url': true,
  'week': true
};

function isTextInputElement(elem) {
  return elem && (
    (elem.nodeName === 'INPUT' && supportedInputTypes[elem.type]) ||
    elem.nodeName === 'TEXTAREA'
  );
}

module.exports = isTextInputElement;

},{}],251:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule isTextNode
 * @typechecks
 */

var isNode = require("./isNode");

/**
 * @param {*} object The object to check.
 * @return {boolean} Whether or not the object is a DOM text node.
 */
function isTextNode(object) {
  return isNode(object) && object.nodeType == 3;
}

module.exports = isTextNode;

},{"./isNode":249}],252:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule joinClasses
 * @typechecks static-only
 */

"use strict";

/**
 * Combines multiple className strings into one.
 * http://jsperf.com/joinclasses-args-vs-array
 *
 * @param {...?string} classes
 * @return {string}
 */
function joinClasses(className/*, ... */) {
  if (!className) {
    className = '';
  }
  var nextClass;
  var argLength = arguments.length;
  if (argLength > 1) {
    for (var ii = 1; ii < argLength; ii++) {
      nextClass = arguments[ii];
      if (nextClass) {
        className = (className ? className + ' ' : '') + nextClass;
      }
    }
  }
  return className;
}

module.exports = joinClasses;

},{}],253:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule keyMirror
 * @typechecks static-only
 */

"use strict";

var invariant = require("./invariant");

/**
 * Constructs an enumeration with keys equal to their value.
 *
 * For example:
 *
 *   var COLORS = keyMirror({blue: null, red: null});
 *   var myColor = COLORS.blue;
 *   var isColorValid = !!COLORS[myColor];
 *
 * The last line could not be performed if the values of the generated enum were
 * not equal to their keys.
 *
 *   Input:  {key1: val1, key2: val2}
 *   Output: {key1: key1, key2: key2}
 *
 * @param {object} obj
 * @return {object}
 */
var keyMirror = function(obj) {
  var ret = {};
  var key;
  ("production" !== process.env.NODE_ENV ? invariant(
    obj instanceof Object && !Array.isArray(obj),
    'keyMirror(...): Argument must be an object.'
  ) : invariant(obj instanceof Object && !Array.isArray(obj)));
  for (key in obj) {
    if (!obj.hasOwnProperty(key)) {
      continue;
    }
    ret[key] = key;
  }
  return ret;
};

module.exports = keyMirror;

}).call(this,require('_process'))
},{"./invariant":247,"_process":91}],254:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule keyOf
 */

/**
 * Allows extraction of a minified key. Let's the build system minify keys
 * without loosing the ability to dynamically use key strings as values
 * themselves. Pass in an object with a single key/val pair and it will return
 * you the string key of that single record. Suppose you want to grab the
 * value for a key 'className' inside of an object. Key/val minification may
 * have aliased that key to be 'xa12'. keyOf({className: null}) will return
 * 'xa12' in that case. Resolve keys you want to use once at startup time, then
 * reuse those resolutions.
 */
var keyOf = function(oneKeyObj) {
  var key;
  for (key in oneKeyObj) {
    if (!oneKeyObj.hasOwnProperty(key)) {
      continue;
    }
    return key;
  }
  return null;
};


module.exports = keyOf;

},{}],255:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule mapObject
 */

'use strict';

var hasOwnProperty = Object.prototype.hasOwnProperty;

/**
 * Executes the provided `callback` once for each enumerable own property in the
 * object and constructs a new object from the results. The `callback` is
 * invoked with three arguments:
 *
 *  - the property value
 *  - the property name
 *  - the object being traversed
 *
 * Properties that are added after the call to `mapObject` will not be visited
 * by `callback`. If the values of existing properties are changed, the value
 * passed to `callback` will be the value at the time `mapObject` visits them.
 * Properties that are deleted before being visited are not visited.
 *
 * @grep function objectMap()
 * @grep function objMap()
 *
 * @param {?object} object
 * @param {function} callback
 * @param {*} context
 * @return {?object}
 */
function mapObject(object, callback, context) {
  if (!object) {
    return null;
  }
  var result = {};
  for (var name in object) {
    if (hasOwnProperty.call(object, name)) {
      result[name] = callback.call(context, object[name], name, object);
    }
  }
  return result;
}

module.exports = mapObject;

},{}],256:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule memoizeStringOnly
 * @typechecks static-only
 */

"use strict";

/**
 * Memoizes the return value of a function that accepts one string argument.
 *
 * @param {function} callback
 * @return {function}
 */
function memoizeStringOnly(callback) {
  var cache = {};
  return function(string) {
    if (cache.hasOwnProperty(string)) {
      return cache[string];
    } else {
      return cache[string] = callback.call(this, string);
    }
  };
}

module.exports = memoizeStringOnly;

},{}],257:[function(require,module,exports){
(function (process){
/**
 * Copyright 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule monitorCodeUse
 */

"use strict";

var invariant = require("./invariant");

/**
 * Provides open-source compatible instrumentation for monitoring certain API
 * uses before we're ready to issue a warning or refactor. It accepts an event
 * name which may only contain the characters [a-z0-9_] and an optional data
 * object with further information.
 */

function monitorCodeUse(eventName, data) {
  ("production" !== process.env.NODE_ENV ? invariant(
    eventName && !/[^a-z0-9_]/.test(eventName),
    'You must provide an eventName using only the characters [a-z0-9_]'
  ) : invariant(eventName && !/[^a-z0-9_]/.test(eventName)));
}

module.exports = monitorCodeUse;

}).call(this,require('_process'))
},{"./invariant":247,"_process":91}],258:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule onlyChild
 */
"use strict";

var ReactElement = require("./ReactElement");

var invariant = require("./invariant");

/**
 * Returns the first child in a collection of children and verifies that there
 * is only one child in the collection. The current implementation of this
 * function assumes that a single child gets passed without a wrapper, but the
 * purpose of this helper function is to abstract away the particular structure
 * of children.
 *
 * @param {?object} children Child collection structure.
 * @return {ReactComponent} The first and only `ReactComponent` contained in the
 * structure.
 */
function onlyChild(children) {
  ("production" !== process.env.NODE_ENV ? invariant(
    ReactElement.isValidElement(children),
    'onlyChild must be passed a children with exactly one child.'
  ) : invariant(ReactElement.isValidElement(children)));
  return children;
}

module.exports = onlyChild;

}).call(this,require('_process'))
},{"./ReactElement":164,"./invariant":247,"_process":91}],259:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule performance
 * @typechecks
 */

"use strict";

var ExecutionEnvironment = require("./ExecutionEnvironment");

var performance;

if (ExecutionEnvironment.canUseDOM) {
  performance =
    window.performance ||
    window.msPerformance ||
    window.webkitPerformance;
}

module.exports = performance || {};

},{"./ExecutionEnvironment":129}],260:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule performanceNow
 * @typechecks
 */

var performance = require("./performance");

/**
 * Detect if we can use `window.performance.now()` and gracefully fallback to
 * `Date.now()` if it doesn't exist. We need to support Firefox < 15 for now
 * because of Facebook's testing infrastructure.
 */
if (!performance || !performance.now) {
  performance = Date;
}

var performanceNow = performance.now.bind(performance);

module.exports = performanceNow;

},{"./performance":259}],261:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule setInnerHTML
 */

"use strict";

var ExecutionEnvironment = require("./ExecutionEnvironment");

var WHITESPACE_TEST = /^[ \r\n\t\f]/;
var NONVISIBLE_TEST = /<(!--|link|noscript|meta|script|style)[ \r\n\t\f\/>]/;

/**
 * Set the innerHTML property of a node, ensuring that whitespace is preserved
 * even in IE8.
 *
 * @param {DOMElement} node
 * @param {string} html
 * @internal
 */
var setInnerHTML = function(node, html) {
  node.innerHTML = html;
};

if (ExecutionEnvironment.canUseDOM) {
  // IE8: When updating a just created node with innerHTML only leading
  // whitespace is removed. When updating an existing node with innerHTML
  // whitespace in root TextNodes is also collapsed.
  // @see quirksmode.org/bugreports/archives/2004/11/innerhtml_and_t.html

  // Feature detection; only IE8 is known to behave improperly like this.
  var testElement = document.createElement('div');
  testElement.innerHTML = ' ';
  if (testElement.innerHTML === '') {
    setInnerHTML = function(node, html) {
      // Magic theory: IE8 supposedly differentiates between added and updated
      // nodes when processing innerHTML, innerHTML on updated nodes suffers
      // from worse whitespace behavior. Re-adding a node like this triggers
      // the initial and more favorable whitespace behavior.
      // TODO: What to do on a detached node?
      if (node.parentNode) {
        node.parentNode.replaceChild(node, node);
      }

      // We also implement a workaround for non-visible tags disappearing into
      // thin air on IE8, this only happens if there is no visible text
      // in-front of the non-visible tags. Piggyback on the whitespace fix
      // and simply check if any non-visible tags appear in the source.
      if (WHITESPACE_TEST.test(html) ||
          html[0] === '<' && NONVISIBLE_TEST.test(html)) {
        // Recover leading whitespace by temporarily prepending any character.
        // \uFEFF has the potential advantage of being zero-width/invisible.
        node.innerHTML = '\uFEFF' + html;

        // deleteData leaves an empty `TextNode` which offsets the index of all
        // children. Definitely want to avoid this.
        var textNode = node.firstChild;
        if (textNode.data.length === 1) {
          node.removeChild(textNode);
        } else {
          textNode.deleteData(0, 1);
        }
      } else {
        node.innerHTML = html;
      }
    };
  }
}

module.exports = setInnerHTML;

},{"./ExecutionEnvironment":129}],262:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule shallowEqual
 */

"use strict";

/**
 * Performs equality by iterating through keys on an object and returning
 * false when any key has values which are not strictly equal between
 * objA and objB. Returns true when the values of all keys are strictly equal.
 *
 * @return {boolean}
 */
function shallowEqual(objA, objB) {
  if (objA === objB) {
    return true;
  }
  var key;
  // Test for A's keys different from B.
  for (key in objA) {
    if (objA.hasOwnProperty(key) &&
        (!objB.hasOwnProperty(key) || objA[key] !== objB[key])) {
      return false;
    }
  }
  // Test for B's keys missing from A.
  for (key in objB) {
    if (objB.hasOwnProperty(key) && !objA.hasOwnProperty(key)) {
      return false;
    }
  }
  return true;
}

module.exports = shallowEqual;

},{}],263:[function(require,module,exports){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule shouldUpdateReactComponent
 * @typechecks static-only
 */

"use strict";

/**
 * Given a `prevElement` and `nextElement`, determines if the existing
 * instance should be updated as opposed to being destroyed or replaced by a new
 * instance. Both arguments are elements. This ensures that this logic can
 * operate on stateless trees without any backing instance.
 *
 * @param {?object} prevElement
 * @param {?object} nextElement
 * @return {boolean} True if the existing instance should be updated.
 * @protected
 */
function shouldUpdateReactComponent(prevElement, nextElement) {
  if (prevElement && nextElement &&
      prevElement.type === nextElement.type &&
      prevElement.key === nextElement.key &&
      prevElement._owner === nextElement._owner) {
    return true;
  }
  return false;
}

module.exports = shouldUpdateReactComponent;

},{}],264:[function(require,module,exports){
(function (process){
/**
 * Copyright 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule toArray
 * @typechecks
 */

var invariant = require("./invariant");

/**
 * Convert array-like objects to arrays.
 *
 * This API assumes the caller knows the contents of the data type. For less
 * well defined inputs use createArrayFrom.
 *
 * @param {object|function|filelist} obj
 * @return {array}
 */
function toArray(obj) {
  var length = obj.length;

  // Some browse builtin objects can report typeof 'function' (e.g. NodeList in
  // old versions of Safari).
  ("production" !== process.env.NODE_ENV ? invariant(
    !Array.isArray(obj) &&
    (typeof obj === 'object' || typeof obj === 'function'),
    'toArray: Array-like object expected'
  ) : invariant(!Array.isArray(obj) &&
  (typeof obj === 'object' || typeof obj === 'function')));

  ("production" !== process.env.NODE_ENV ? invariant(
    typeof length === 'number',
    'toArray: Object needs a length property'
  ) : invariant(typeof length === 'number'));

  ("production" !== process.env.NODE_ENV ? invariant(
    length === 0 ||
    (length - 1) in obj,
    'toArray: Object should have keys for indices'
  ) : invariant(length === 0 ||
  (length - 1) in obj));

  // Old IE doesn't give collections access to hasOwnProperty. Assume inputs
  // without method will throw during the slice call and skip straight to the
  // fallback.
  if (obj.hasOwnProperty) {
    try {
      return Array.prototype.slice.call(obj);
    } catch (e) {
      // IE < 9 does not support Array#slice on collections objects
    }
  }

  // Fall back to copying key by key. This assumes all keys have a value,
  // so will not preserve sparsely populated inputs.
  var ret = Array(length);
  for (var ii = 0; ii < length; ii++) {
    ret[ii] = obj[ii];
  }
  return ret;
}

module.exports = toArray;

}).call(this,require('_process'))
},{"./invariant":247,"_process":91}],265:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule traverseAllChildren
 */

"use strict";

var ReactElement = require("./ReactElement");
var ReactInstanceHandles = require("./ReactInstanceHandles");

var invariant = require("./invariant");

var SEPARATOR = ReactInstanceHandles.SEPARATOR;
var SUBSEPARATOR = ':';

/**
 * TODO: Test that:
 * 1. `mapChildren` transforms strings and numbers into `ReactTextComponent`.
 * 2. it('should fail when supplied duplicate key', function() {
 * 3. That a single child and an array with one item have the same key pattern.
 * });
 */

var userProvidedKeyEscaperLookup = {
  '=': '=0',
  '.': '=1',
  ':': '=2'
};

var userProvidedKeyEscapeRegex = /[=.:]/g;

function userProvidedKeyEscaper(match) {
  return userProvidedKeyEscaperLookup[match];
}

/**
 * Generate a key string that identifies a component within a set.
 *
 * @param {*} component A component that could contain a manual key.
 * @param {number} index Index that is used if a manual key is not provided.
 * @return {string}
 */
function getComponentKey(component, index) {
  if (component && component.key != null) {
    // Explicit key
    return wrapUserProvidedKey(component.key);
  }
  // Implicit key determined by the index in the set
  return index.toString(36);
}

/**
 * Escape a component key so that it is safe to use in a reactid.
 *
 * @param {*} key Component key to be escaped.
 * @return {string} An escaped string.
 */
function escapeUserProvidedKey(text) {
  return ('' + text).replace(
    userProvidedKeyEscapeRegex,
    userProvidedKeyEscaper
  );
}

/**
 * Wrap a `key` value explicitly provided by the user to distinguish it from
 * implicitly-generated keys generated by a component's index in its parent.
 *
 * @param {string} key Value of a user-provided `key` attribute
 * @return {string}
 */
function wrapUserProvidedKey(key) {
  return '$' + escapeUserProvidedKey(key);
}

/**
 * @param {?*} children Children tree container.
 * @param {!string} nameSoFar Name of the key path so far.
 * @param {!number} indexSoFar Number of children encountered until this point.
 * @param {!function} callback Callback to invoke with each child found.
 * @param {?*} traverseContext Used to pass information throughout the traversal
 * process.
 * @return {!number} The number of children in this subtree.
 */
var traverseAllChildrenImpl =
  function(children, nameSoFar, indexSoFar, callback, traverseContext) {
    var nextName, nextIndex;
    var subtreeCount = 0;  // Count of children found in the current subtree.
    if (Array.isArray(children)) {
      for (var i = 0; i < children.length; i++) {
        var child = children[i];
        nextName = (
          nameSoFar +
          (nameSoFar ? SUBSEPARATOR : SEPARATOR) +
          getComponentKey(child, i)
        );
        nextIndex = indexSoFar + subtreeCount;
        subtreeCount += traverseAllChildrenImpl(
          child,
          nextName,
          nextIndex,
          callback,
          traverseContext
        );
      }
    } else {
      var type = typeof children;
      var isOnlyChild = nameSoFar === '';
      // If it's the only child, treat the name as if it was wrapped in an array
      // so that it's consistent if the number of children grows
      var storageName =
        isOnlyChild ? SEPARATOR + getComponentKey(children, 0) : nameSoFar;
      if (children == null || type === 'boolean') {
        // All of the above are perceived as null.
        callback(traverseContext, null, storageName, indexSoFar);
        subtreeCount = 1;
      } else if (type === 'string' || type === 'number' ||
                 ReactElement.isValidElement(children)) {
        callback(traverseContext, children, storageName, indexSoFar);
        subtreeCount = 1;
      } else if (type === 'object') {
        ("production" !== process.env.NODE_ENV ? invariant(
          !children || children.nodeType !== 1,
          'traverseAllChildren(...): Encountered an invalid child; DOM ' +
          'elements are not valid children of React components.'
        ) : invariant(!children || children.nodeType !== 1));
        for (var key in children) {
          if (children.hasOwnProperty(key)) {
            nextName = (
              nameSoFar + (nameSoFar ? SUBSEPARATOR : SEPARATOR) +
              wrapUserProvidedKey(key) + SUBSEPARATOR +
              getComponentKey(children[key], 0)
            );
            nextIndex = indexSoFar + subtreeCount;
            subtreeCount += traverseAllChildrenImpl(
              children[key],
              nextName,
              nextIndex,
              callback,
              traverseContext
            );
          }
        }
      }
    }
    return subtreeCount;
  };

/**
 * Traverses children that are typically specified as `props.children`, but
 * might also be specified through attributes:
 *
 * - `traverseAllChildren(this.props.children, ...)`
 * - `traverseAllChildren(this.props.leftPanelChildren, ...)`
 *
 * The `traverseContext` is an optional argument that is passed through the
 * entire traversal. It can be used to store accumulations or anything else that
 * the callback might find relevant.
 *
 * @param {?*} children Children tree object.
 * @param {!function} callback To invoke upon traversing each child.
 * @param {?*} traverseContext Context for traversal.
 * @return {!number} The number of children in this subtree.
 */
function traverseAllChildren(children, callback, traverseContext) {
  if (children == null) {
    return 0;
  }

  return traverseAllChildrenImpl(children, '', 0, callback, traverseContext);
}

module.exports = traverseAllChildren;

}).call(this,require('_process'))
},{"./ReactElement":164,"./ReactInstanceHandles":172,"./invariant":247,"_process":91}],266:[function(require,module,exports){
(function (process){
/**
 * Copyright 2013-2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule update
 */

"use strict";

var assign = require("./Object.assign");
var keyOf = require("./keyOf");
var invariant = require("./invariant");

function shallowCopy(x) {
  if (Array.isArray(x)) {
    return x.concat();
  } else if (x && typeof x === 'object') {
    return assign(new x.constructor(), x);
  } else {
    return x;
  }
}

var COMMAND_PUSH = keyOf({$push: null});
var COMMAND_UNSHIFT = keyOf({$unshift: null});
var COMMAND_SPLICE = keyOf({$splice: null});
var COMMAND_SET = keyOf({$set: null});
var COMMAND_MERGE = keyOf({$merge: null});
var COMMAND_APPLY = keyOf({$apply: null});

var ALL_COMMANDS_LIST = [
  COMMAND_PUSH,
  COMMAND_UNSHIFT,
  COMMAND_SPLICE,
  COMMAND_SET,
  COMMAND_MERGE,
  COMMAND_APPLY
];

var ALL_COMMANDS_SET = {};

ALL_COMMANDS_LIST.forEach(function(command) {
  ALL_COMMANDS_SET[command] = true;
});

function invariantArrayCase(value, spec, command) {
  ("production" !== process.env.NODE_ENV ? invariant(
    Array.isArray(value),
    'update(): expected target of %s to be an array; got %s.',
    command,
    value
  ) : invariant(Array.isArray(value)));
  var specValue = spec[command];
  ("production" !== process.env.NODE_ENV ? invariant(
    Array.isArray(specValue),
    'update(): expected spec of %s to be an array; got %s. ' +
    'Did you forget to wrap your parameter in an array?',
    command,
    specValue
  ) : invariant(Array.isArray(specValue)));
}

function update(value, spec) {
  ("production" !== process.env.NODE_ENV ? invariant(
    typeof spec === 'object',
    'update(): You provided a key path to update() that did not contain one ' +
    'of %s. Did you forget to include {%s: ...}?',
    ALL_COMMANDS_LIST.join(', '),
    COMMAND_SET
  ) : invariant(typeof spec === 'object'));

  if (spec.hasOwnProperty(COMMAND_SET)) {
    ("production" !== process.env.NODE_ENV ? invariant(
      Object.keys(spec).length === 1,
      'Cannot have more than one key in an object with %s',
      COMMAND_SET
    ) : invariant(Object.keys(spec).length === 1));

    return spec[COMMAND_SET];
  }

  var nextValue = shallowCopy(value);

  if (spec.hasOwnProperty(COMMAND_MERGE)) {
    var mergeObj = spec[COMMAND_MERGE];
    ("production" !== process.env.NODE_ENV ? invariant(
      mergeObj && typeof mergeObj === 'object',
      'update(): %s expects a spec of type \'object\'; got %s',
      COMMAND_MERGE,
      mergeObj
    ) : invariant(mergeObj && typeof mergeObj === 'object'));
    ("production" !== process.env.NODE_ENV ? invariant(
      nextValue && typeof nextValue === 'object',
      'update(): %s expects a target of type \'object\'; got %s',
      COMMAND_MERGE,
      nextValue
    ) : invariant(nextValue && typeof nextValue === 'object'));
    assign(nextValue, spec[COMMAND_MERGE]);
  }

  if (spec.hasOwnProperty(COMMAND_PUSH)) {
    invariantArrayCase(value, spec, COMMAND_PUSH);
    spec[COMMAND_PUSH].forEach(function(item) {
      nextValue.push(item);
    });
  }

  if (spec.hasOwnProperty(COMMAND_UNSHIFT)) {
    invariantArrayCase(value, spec, COMMAND_UNSHIFT);
    spec[COMMAND_UNSHIFT].forEach(function(item) {
      nextValue.unshift(item);
    });
  }

  if (spec.hasOwnProperty(COMMAND_SPLICE)) {
    ("production" !== process.env.NODE_ENV ? invariant(
      Array.isArray(value),
      'Expected %s target to be an array; got %s',
      COMMAND_SPLICE,
      value
    ) : invariant(Array.isArray(value)));
    ("production" !== process.env.NODE_ENV ? invariant(
      Array.isArray(spec[COMMAND_SPLICE]),
      'update(): expected spec of %s to be an array of arrays; got %s. ' +
      'Did you forget to wrap your parameters in an array?',
      COMMAND_SPLICE,
      spec[COMMAND_SPLICE]
    ) : invariant(Array.isArray(spec[COMMAND_SPLICE])));
    spec[COMMAND_SPLICE].forEach(function(args) {
      ("production" !== process.env.NODE_ENV ? invariant(
        Array.isArray(args),
        'update(): expected spec of %s to be an array of arrays; got %s. ' +
        'Did you forget to wrap your parameters in an array?',
        COMMAND_SPLICE,
        spec[COMMAND_SPLICE]
      ) : invariant(Array.isArray(args)));
      nextValue.splice.apply(nextValue, args);
    });
  }

  if (spec.hasOwnProperty(COMMAND_APPLY)) {
    ("production" !== process.env.NODE_ENV ? invariant(
      typeof spec[COMMAND_APPLY] === 'function',
      'update(): expected spec of %s to be a function; got %s.',
      COMMAND_APPLY,
      spec[COMMAND_APPLY]
    ) : invariant(typeof spec[COMMAND_APPLY] === 'function'));
    nextValue = spec[COMMAND_APPLY](nextValue);
  }

  for (var k in spec) {
    if (!(ALL_COMMANDS_SET.hasOwnProperty(k) && ALL_COMMANDS_SET[k])) {
      nextValue[k] = update(value[k], spec[k]);
    }
  }

  return nextValue;
}

module.exports = update;

}).call(this,require('_process'))
},{"./Object.assign":135,"./invariant":247,"./keyOf":254,"_process":91}],267:[function(require,module,exports){
(function (process){
/**
 * Copyright 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule warning
 */

"use strict";

var emptyFunction = require("./emptyFunction");

/**
 * Similar to invariant but only logs a warning if the condition is not met.
 * This can be used to log issues in development environments in critical
 * paths. Removing the logging code for production environments will keep the
 * same logic and follow the same code paths.
 */

var warning = emptyFunction;

if ("production" !== process.env.NODE_ENV) {
  warning = function(condition, format ) {for (var args=[],$__0=2,$__1=arguments.length;$__0<$__1;$__0++) args.push(arguments[$__0]);
    if (format === undefined) {
      throw new Error(
        '`warning(condition, format, ...args)` requires a warning ' +
        'message argument'
      );
    }

    if (!condition) {
      var argIndex = 0;
      console.warn('Warning: ' + format.replace(/%s/g, function()  {return args[argIndex++];}));
    }
  };
}

module.exports = warning;

}).call(this,require('_process'))
},{"./emptyFunction":228,"_process":91}],268:[function(require,module,exports){
'use strict';
/*eslint-env browser*/
/*var _ = */require('lodash');
var reactTemplates = require('../src/reactTemplates');
window.reactTemplates = reactTemplates;





},{"../src/reactTemplates":271,"lodash":107}],269:[function(require,module,exports){
'use strict';

/**
 * @param {string} html
 * @param node
 * @return {{line: number, col: number}}}
 */
function getLine(html, node) {
    if (!node) {
        return {col: 1, line: 1};
    }
    var linesUntil = html.substring(0, node.startIndex).split('\n');
    return {line: linesUntil.length, col: linesUntil[linesUntil.length - 1].length + 1};
}

//function getLine(node) {
//    if (!node) {
//        return 0;
//    }
//    var line = 0;
//    var prev = node.prev;
//    while (prev) {
//        var nl = prev.data.split('\n').length - 1;
//        line += nl;
//        prev = prev.prev;
//    }
//
//    line += getLine(node.parent);
//    return line + 1;
//}

//function RTCodeError(message, line) {
//    this.name = 'RTCodeError';
//    this.message = message || '';
//    this.line = line || -1;
//}
//RTCodeError.prototype = Error.prototype;

// Redefine properties on Error to be enumerable
/*eslint no-extend-native:0*/
Object.defineProperty(Error.prototype, 'message', {configurable: true, enumerable: true});
Object.defineProperty(Error.prototype, 'stack', {configurable: true, enumerable: true});
//Object.defineProperty(Error.prototype, 'line', { configurable: true, enumerable: true });

/**
 * @param {string} message
 * @param {number=} startOffset
 * @param {number=} endOffset
 * @param {number=} line
 * @param {number=} column
 * @constructor
 */
function RTCodeError(message, startOffset, endOffset, line, column) {
    Error.captureStackTrace(this, RTCodeError);
    this.name = 'RTCodeError';
    this.message = message || '';
    this.index = norm(startOffset);
    this.startOffset = norm(startOffset);
    this.endOffset = norm(endOffset);
    this.line = norm(line);
    this.column = norm(column);
}

function norm(n) {
    return n === undefined ? -1 : n;
}

RTCodeError.prototype = Object.create(Error.prototype);

RTCodeError.build = buildError;
RTCodeError.norm = norm;

RTCodeError.prototype.toIssue = function () {
};

/**
 * @param {string} msg
 * @param {*} context
 * @param {*} node
 * @return {RTCodeError}
 */
function buildError(msg, context, node) {
    var pos = getLine(context.html, node);
    var end;
    if (node.data) {
        end = node.startIndex + node.data.length;
    } else if (node.next) {
        end = node.next.startIndex;
    } else {
        end = context.html.length;
    }
    return new RTCodeError(msg, node.startIndex, end, pos.line, pos.col);
}

module.exports = {
    RTCodeError: RTCodeError
};

},{}],270:[function(require,module,exports){
/**
 * Created by avim on 12/4/2014.
 */
'use strict';
var ver0_12_0 = ['a', 'abbr', 'address', 'area', 'article', 'aside', 'audio', 'b', 'base', 'bdi', 'bdo', 'big', 'blockquote', 'body', 'br', 'button', 'canvas', 'caption', 'cite', 'code', 'col', 'colgroup', 'data', 'datalist', 'dd', 'del', 'details', 'dfn', 'dialog', 'div', 'dl', 'dt', 'em', 'embed', 'fieldset', 'figcaption', 'figure', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'header', 'hr', 'html', 'i', 'iframe', 'img', 'input', 'ins', 'kbd', 'keygen', 'label', 'legend', 'li', 'link', 'main', 'map', 'mark', 'menu', 'menuitem', 'meta', 'meter', 'nav', 'noscript', 'object', 'ol', 'optgroup', 'option', 'output', 'p', 'param', 'picture', 'pre', 'progress', 'q', 'rp', 'rt', 'ruby', 's', 'samp', 'script', 'section', 'select', 'small', 'source', 'span', 'strong', 'style', 'sub', 'summary', 'sup', 'table', 'tbody', 'td', 'textarea', 'tfoot', 'th', 'thead', 'time', 'title', 'tr', 'track', 'u', 'ul', 'var', 'video', 'wbr', 'circle', 'defs', 'ellipse', 'g', 'line', 'linearGradient', 'mask', 'path', 'pattern', 'polygon', 'polyline', 'radialGradient', 'rect', 'stop', 'svg', 'text', 'tspan'];
var ver0_11_2 = ['a', 'abbr', 'address', 'area', 'article', 'aside', 'audio', 'b', 'base', 'bdi', 'bdo', 'big', 'blockquote', 'body', 'br', 'button', 'canvas', 'caption', 'cite', 'code', 'col', 'colgroup', 'data', 'datalist', 'dd', 'del', 'details', 'dfn', 'dialog', 'div', 'dl', 'dt', 'em', 'embed', 'fieldset', 'figcaption', 'figure', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'header', 'hr', 'html', 'i', 'iframe', 'img', 'input', 'ins', 'kbd', 'keygen', 'label', 'legend', 'li', 'link', 'main', 'map', 'mark', 'menu', 'menuitem', 'meta', 'meter', 'nav', 'noscript', 'object', 'ol', 'optgroup', 'option', 'output', 'p', 'param', 'picture', 'pre', 'progress', 'q', 'rp', 'rt', 'ruby', 's', 'samp', 'script', 'section', 'select', 'small', 'source', 'span', 'strong', 'style', 'sub', 'summary', 'sup', 'table', 'tbody', 'td', 'textarea', 'tfoot', 'th', 'thead', 'time', 'title', 'tr', 'track', 'u', 'ul', 'var', 'video', 'wbr', 'circle', 'defs', 'ellipse', 'g', 'line', 'linearGradient', 'mask', 'path', 'pattern', 'polygon', 'polyline', 'radialGradient', 'rect', 'stop', 'svg', 'text', 'tspan', 'injection'];
var ver0_11_0 = ['a', 'abbr', 'address', 'area', 'article', 'aside', 'audio', 'b', 'base', 'bdi', 'bdo', 'big', 'blockquote', 'body', 'br', 'button', 'canvas', 'caption', 'cite', 'code', 'col', 'colgroup', 'data', 'datalist', 'dd', 'del', 'details', 'dfn', 'div', 'dl', 'dt', 'em', 'embed', 'fieldset', 'figcaption', 'figure', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'header', 'hr', 'html', 'i', 'iframe', 'img', 'input', 'ins', 'kbd', 'keygen', 'label', 'legend', 'li', 'link', 'main', 'map', 'mark', 'menu', 'menuitem', 'meta', 'meter', 'nav', 'noscript', 'object', 'ol', 'optgroup', 'option', 'output', 'p', 'param', 'pre', 'progress', 'q', 'rp', 'rt', 'ruby', 's', 'samp', 'script', 'section', 'select', 'small', 'source', 'span', 'strong', 'style', 'sub', 'summary', 'sup', 'table', 'tbody', 'td', 'textarea', 'tfoot', 'th', 'thead', 'time', 'title', 'tr', 'track', 'u', 'ul', 'var', 'video', 'wbr', 'circle', 'defs', 'ellipse', 'g', 'line', 'linearGradient', 'mask', 'path', 'pattern', 'polygon', 'polyline', 'radialGradient', 'rect', 'stop', 'svg', 'text', 'tspan', 'injection'];
var ver0_10_0 = ['a', 'abbr', 'address', 'area', 'article', 'aside', 'audio', 'b', 'base', 'bdi', 'bdo', 'big', 'blockquote', 'body', 'br', 'button', 'canvas', 'caption', 'cite', 'code', 'col', 'colgroup', 'data', 'datalist', 'dd', 'del', 'details', 'dfn', 'div', 'dl', 'dt', 'em', 'embed', 'fieldset', 'figcaption', 'figure', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'header', 'hr', 'html', 'i', 'iframe', 'img', 'input', 'ins', 'kbd', 'keygen', 'label', 'legend', 'li', 'link', 'main', 'map', 'mark', 'menu', 'menuitem', 'meta', 'meter', 'nav', 'noscript', 'object', 'ol', 'optgroup', 'option', 'output', 'p', 'param', 'pre', 'progress', 'q', 'rp', 'rt', 'ruby', 's', 'samp', 'script', 'section', 'select', 'small', 'source', 'span', 'strong', 'style', 'sub', 'summary', 'sup', 'table', 'tbody', 'td', 'textarea', 'tfoot', 'th', 'thead', 'time', 'title', 'tr', 'track', 'u', 'ul', 'var', 'video', 'wbr', 'circle', 'defs', 'g', 'line', 'linearGradient', 'path', 'polygon', 'polyline', 'radialGradient', 'rect', 'stop', 'svg', 'text', 'injection'];


var versions = {
    '0.12.2': ver0_12_0,
    '0.12.1': ver0_12_0,
    '0.12.0': ver0_12_0,
    '0.11.2': ver0_11_2,
    '0.11.1': ver0_11_0,
    '0.11.0': ver0_11_0,
    '0.10.0': ver0_10_0
};

module.exports = versions;
},{}],271:[function(require,module,exports){
/**
 * Created by avim on 11/9/2014.
 */
'use strict';
var cheerio = require('cheerio');
var _ = require('lodash');
var esprima = require('esprima-harmony');
var escodegen = require('escodegen');
var reactDOMSupport = require('./reactDOMSupport');
var stringUtils = require('./stringUtils');
var rtError = require('./RTCodeError');
var RTCodeError = rtError.RTCodeError;

var repeatTemplate = _.template('_.map(<%= collection %>,<%= repeatFunction %>.bind(<%= repeatBinds %>))');
var ifTemplate = _.template('((<%= condition %>)?(<%= body %>):null)');
var propsTemplate = _.template('_.merge({}, <%= generatedProps %>, <%= rtProps %>)');
var classSetTemplate = _.template('React.addons.classSet(<%= classSet %>)');
var simpleTagTemplate = _.template('<%= name %>(<%= props %><%= children %>)');
var tagTemplate = _.template('<%= name %>.apply(this,_.flatten([<%= props %><%= children %>]))');
var simpleTagTemplateCreateElement = _.template('React.createElement(<%= name %>,<%= props %><%= children %>)');
var tagTemplateCreateElement = _.template('React.createElement.apply(this,_.flatten([<%= name %>,<%= props %><%= children %>]))');
var commentTemplate = _.template(' /* <%= data %> */ ');

var templateAMDTemplate = _.template("define(<%= name ? '\"'+name + '\", ' : '' %>[<%= requirePaths %>], function (<%= requireNames %>) {\n'use strict';\n <%= injectedFunctions %>\nreturn function(){ return <%= body %>};\n});");
var templateCommonJSTemplate = _.template("'use strict';\n<%= vars %>\n\n<%= injectedFunctions %>\nmodule.exports = function(){ return <%= body %>};\n");
var templateES6Template = _.template('<%= vars %>\n\n<%= injectedFunctions %>\nexport default function(){ return <%= body %>}\n');
var templatePJSTemplate = _.template('var <%= name %> = function () {\n' +
                                '<%= injectedFunctions %>\n' +
                                'return <%= body %>\n' +
                                '};\n');
var templateTypescriptTemplate = _.template('<%= vars %>\n\n<%= injectedFunctions %>\nvar fn = function() { return <%= body %> };\nexport = fn\n');

var templates = {
    amd: templateAMDTemplate,
    commonjs: templateCommonJSTemplate,
    typescript: templateTypescriptTemplate,
    es6: templateES6Template,
    none: templatePJSTemplate
};

var htmlSelfClosingTags = ['area', 'base', 'br', 'col', 'command', 'embed', 'hr', 'img', 'input', 'keygen', 'link', 'meta', 'param', 'source', 'track', 'wbr'];

var templateProp = 'rt-repeat';
var ifProp = 'rt-if';
var classSetProp = 'rt-class';
var scopeProp = 'rt-scope';
var propsProp = 'rt-props';

var defaultOptions = {modules: 'amd', version: false, force: false, format: 'stylish', targetVersion: '0.12.2'};

/**
 * @param context
 * @return {boolean}
 */
function shouldUseCreateElement(context) {
    switch (context.options.targetVersion) {
        case '0.11.2':
        case '0.11.1':
        case '0.11.0':
        case '0.10.0':
            return false;
        default:
            return true;
    }
}

var reactSupportedAttributes = ['accept', 'acceptCharset', 'accessKey', 'action', 'allowFullScreen', 'allowTransparency', 'alt', 'async', 'autoComplete', 'autoPlay', 'cellPadding', 'cellSpacing', 'charSet', 'checked', 'classID', 'className', 'cols', 'colSpan', 'content', 'contentEditable', 'contextMenu', 'controls', 'coords', 'crossOrigin', 'data', 'dateTime', 'defer', 'dir', 'disabled', 'download', 'draggable', 'encType', 'form', 'formNoValidate', 'frameBorder', 'height', 'hidden', 'href', 'hrefLang', 'htmlFor', 'httpEquiv', 'icon', 'id', 'label', 'lang', 'list', 'loop', 'manifest', 'max', 'maxLength', 'media', 'mediaGroup', 'method', 'min', 'multiple', 'muted', 'name', 'noValidate', 'open', 'pattern', 'placeholder', 'poster', 'preload', 'radioGroup', 'readOnly', 'rel', 'required', 'role', 'rows', 'rowSpan', 'sandbox', 'scope', 'scrolling', 'seamless', 'selected', 'shape', 'size', 'sizes', 'span', 'spellCheck', 'src', 'srcDoc', 'srcSet', 'start', 'step', 'style', 'tabIndex', 'target', 'title', 'type', 'useMap', 'value', 'width', 'wmode'];
var attributesMapping = {'class': 'className', 'rt-class': 'className'};
_.forEach(reactSupportedAttributes, function (attributeReactName) {
    if (attributeReactName !== attributeReactName.toLowerCase()) {
        attributesMapping[attributeReactName.toLowerCase()] = attributeReactName;
    }
});

/**
 * @param children
 * @return {string}
 */
function concatChildren(children) {
    var res = '';
    _.forEach(children, function (child) {
        if (child && child.indexOf(' /*') !== 0 ) {
            res += ',' + child;
        } else {
            res += child;
        }
    }, this);
    return res;
}

/**
 * @const
 */
var curlyMap = {'{': 1, '}': -1};

/**
 * @param node
 * @param context
 * @param {string} txt
 * @return {string}
 */
function convertText(node, context, txt) {
    var res = '';
    var first = true;
    var concatChar = node.type === 'text' ? ',' : '+';
    while (txt.indexOf('{') !== -1) {
        var start = txt.indexOf('{');
        var pre = txt.substr(0, start);
        if (pre) {
            res += (first ? '' : concatChar) + JSON.stringify(pre);
            first = false;
        }
        var curlyCounter = 1;
        var end;
        for (end = start + 1; end < txt.length && curlyCounter > 0; end++) {
            curlyCounter += curlyMap[txt.charAt(end)] || 0;
        }
        if (curlyCounter !== 0) {
            throw RTCodeError.build("Failed to parse text '" + txt + "'", context, node);
        } else {
            var needsParens = start !== 0 || end !== txt.length - 1;
            res += (first ? '' : concatChar) + (needsParens ? '(' : '') + txt.substr(start + 1, end - start - 2) + (needsParens ? ')' : '');
            first = false;
            txt = txt.substr(end);
        }
    }
    if (txt) {
        res += (first ? '' : concatChar) + JSON.stringify(txt);
    }
    if (res === '') {
        res = 'true';
    }

    //validateJS(res, node, context);
    return res;
}

/**
 * @param {string} txt
 * @return {boolean}
 */
function isStringOnlyCode(txt) {
    txt = txt.trim();
    return txt.length && txt.charAt(0) === '{' && txt.charAt(txt.length - 1) === '}';
}

function generateInjectedFunc(context, namePrefix, body, params) {
    params = params || context.boundParams;
    var generatedFuncName = namePrefix.replace(',', '') + (context.injectedFunctions.length + 1);
    var funcText = 'function ' + generatedFuncName + '(' + params.join(',');
    funcText += ') {\n' + body + '\n}\n';
    context.injectedFunctions.push(funcText);
    return generatedFuncName;
}

function generateProps(node, context) {
//    console.log(node);
    var props = {};
    _.forOwn(node.attribs, function (val, key) {
        var propKey = attributesMapping[key.toLowerCase()] || key;
        if (props.hasOwnProperty(propKey)) {
            throw RTCodeError.build('duplicate definition of ' + propKey + ' ' + JSON.stringify(node.attribs), context, node);
        }
        if (key.indexOf('on') === 0 && !isStringOnlyCode(val)) {
            var funcParts = val.split('=>');
            if (funcParts.length !== 2) {
                throw RTCodeError.build("when using 'on' events, use lambda '(p1,p2)=>body' notation or use {} to return a callback function. error: [" + key + "='" + val + "']", context, node);
            }
            var evtParams = funcParts[0].replace('(', '').replace(')', '').trim();
            var funcBody = funcParts[1].trim();
            var params = context.boundParams;
            if (evtParams.trim() !== '') {
                params = params.concat([evtParams.trim()]);
            }
            var generatedFuncName = generateInjectedFunc(context, key, funcBody, params);
            props[propKey] = generatedFuncName + '.bind(' + (['this'].concat(context.boundParams)).join(',') + ')';
        } else if (key === 'style' && !isStringOnlyCode(val)) {
            var styleParts = val.trim().split(';');
            styleParts = _.compact(_.map(styleParts, function (str) {
                str = str.trim();
                if (!str || str.indexOf(':') === -1) {
                    return null;
                }
                var res = str.split(':');
                res[0] = res[0].trim();
                res[1] = res.slice(1).join(':').trim();
                return res;
            }));
            var styleArray = [];
            _.forEach(styleParts, function (stylePart) {
                styleArray.push(stringUtils.convertToCamelCase(stylePart[0]) + ' : ' + convertText(node, context, stylePart[1].trim()));
            });
            props[propKey] = '{' + styleArray.join(',') + '}';
        } else if (key === classSetProp) {
            props[propKey] = classSetTemplate({classSet: val});
        } else if (key.indexOf('rt-') !== 0) {
            props[propKey] = convertText(node, context, val.trim());
        }
    });

    return '{' + _.map(props, function (val, key) {
        return JSON.stringify(key) + ' : ' + val;
    }).join(',') + '}';
}

function convertTagNameToConstructor(tagName, context) {
    var isHtmlTag = _.contains(reactDOMSupport[context.options.targetVersion], tagName);
    if (shouldUseCreateElement(context)) {
        isHtmlTag = isHtmlTag || tagName.match(/^\w+(-\w+)$/);
        return isHtmlTag ? "'" + tagName + "'" : tagName;
    }
    return isHtmlTag ? 'React.DOM.' + tagName : tagName;
}

function defaultContext(html, options) {
    return {
        boundParams: [],
        injectedFunctions: [],
        html: html,
        options: options
    };
}

function hasNonSimpleChildren(node) {
    return _.any(node.children, function (child) {
        return child.type === 'tag' && child.attribs[templateProp];
    });
}

function convertHtmlToReact(node, context) {
    if (node.type === 'tag' || node.type === 'style') {
        context = {
            boundParams: _.clone(context.boundParams),
            injectedFunctions: context.injectedFunctions,
            html: context.html,
            options: context.options
        };

        var data = {name: convertTagNameToConstructor(node.name, context)};
        if (node.attribs[scopeProp]) {
            data.scopeMapping = {};
            data.scopeName = '';
            _.each(context.boundParams, function (boundParam) {
                data.scopeMapping[boundParam] = boundParam;
            });
            _.each(node.attribs[scopeProp].split(';'), function (scopePart) {
                var scopeSubParts = scopePart.split(' as ');
                if (scopeSubParts.length < 2) {
                    throw RTCodeError.build("invalid scope part '" + scopePart + "'", context, node);
                }
                var scopeName = scopeSubParts[1].trim();
                validateJS(scopeName, node, context);
                stringUtils.addIfNotThere(context.boundParams, scopeName);
                data.scopeName += stringUtils.capitalize(scopeName);
                data.scopeMapping[scopeName] = scopeSubParts[0].trim();
                validateJS(data.scopeMapping[scopeName], node, context);
            });
        }

        if (node.attribs[templateProp]) {
            var arr = node.attribs[templateProp].split(' in ');
            if (arr.length !== 2) {
                throw RTCodeError.build("rt-repeat invalid 'in' expression '" + node.attribs[templateProp] + "'", context, node);
            }
            data.item = arr[0].trim();
            data.collection = arr[1].trim();
            validateJS(data.item, node, context);
            validateJS(data.collection, node, context);
            stringUtils.addIfNotThere(context.boundParams, data.item);
            stringUtils.addIfNotThere(context.boundParams, data.item + 'Index');
        }
        data.props = generateProps(node, context);
        if (node.attribs[propsProp]) {
            data.props = propsTemplate({generatedProps: data.props, rtProps: node.attribs[propsProp]});
        }
        if (node.attribs[ifProp]) {
            data.condition = node.attribs[ifProp].trim();
        }
        data.children = node.children ? concatChildren(_.map(node.children, function (child) {
            var code = convertHtmlToReact(child, context);
            validateJS(code, child, context);
            return code;
        })) : '';

        if (hasNonSimpleChildren(node)) {
            data.body = shouldUseCreateElement(context) ? tagTemplateCreateElement(data) : tagTemplate(data);
        } else {
            data.body = shouldUseCreateElement(context) ? simpleTagTemplateCreateElement(data) : simpleTagTemplate(data);
        }

        if (node.attribs[templateProp]) {
            data.repeatFunction = generateInjectedFunc(context, 'repeat' + stringUtils.capitalize(data.item), 'return ' + data.body);
            data.repeatBinds = ['this'].concat(_.reject(context.boundParams, function (param) {
                return (param === data.item || param === data.item + 'Index');
            }));
            data.body = repeatTemplate(data);
        }
        if (node.attribs[ifProp]) {
            data.body = ifTemplate(data);
        }
        if (node.attribs[scopeProp]) {
            var generatedFuncName = generateInjectedFunc(context, 'scope' + data.scopeName, 'return ' + data.body, _.keys(data.scopeMapping));
            data.body = generatedFuncName + '.apply(this, [' + _.values(data.scopeMapping).join(',') + '])';
        }
        return data.body;
    } else if (node.type === 'comment') {
        return (commentTemplate(node));
    } else if (node.type === 'text') {
        if (node.data.trim()) {
            return convertText(node, context, node.data);
        }
        return '';
    }
}

//function removeDocType(html) {
//  html = html.replace(/^\s*\<\!doctype\s+rt\s*>/mi, function () {
//    return '';
//  });
//  return html;
//}
function isTag(node) {
    return node.type === 'tag';
}

function handleSelfClosingHtmlTags(nodes) {
    return _(nodes)
        .map(function (node) {
            var externalNodes = [];
            node.children = handleSelfClosingHtmlTags(node.children);
            if (node.type === 'tag' && _.contains(htmlSelfClosingTags, node.name)) {
                externalNodes = _.filter(node.children, isTag);
                _.forEach(externalNodes, function (child) {
                    child.parent = node;
                });
                node.children = _.reject(node.children, isTag);
            }
            return [node].concat(externalNodes);
        })
        .flatten()
        .value();
}

/**
 * @param {string} html
 * @param {{modules:string}?} options
 * @return {string}
 */
function convertTemplateToReact(html, options) {
    var rootNode = cheerio.load(html, {lowerCaseTags: false, lowerCaseAttributeNames: false, xmlMode: true, withStartIndices: true});
    options = _.defaults({}, options, defaultOptions);
    var defines = options.defines ? options.defines : {'react/addons': 'React', lodash: '_'};
    var context = defaultContext(html, options);
    var rootTags = _.filter(rootNode.root()[0].children, {type: 'tag'});
    rootTags = handleSelfClosingHtmlTags(rootTags);
    if (!rootTags || rootTags.length === 0) {
        throw new RTCodeError('Document should have a root element');
    }
    var firstTag = null;
    _.forEach(rootTags, function (tag) {
        if (tag.name === 'rt-require') {
            if (!tag.attribs.dependency || !tag.attribs.as) {
                throw RTCodeError.build("rt-require needs 'dependency' and 'as' attributes", context, tag);
            } else if (tag.children.length) {
                throw RTCodeError.build('rt-require may have no children', context, tag);
            }
            //if (options.modules === 'typescript') {
            //    defines['./' + tag.attribs.dependency] = tag.attribs.as;
            //} else {
            defines[tag.attribs.dependency] = tag.attribs.as;
            //}
        } else if (firstTag === null) {
            firstTag = tag;
        } else {
            throw RTCodeError.build('Document should have no more than a single root element', context, tag);
        }
    });
    if (firstTag === null) {
        throw RTCodeError.build('Document should have a single root element', context, rootNode.root()[0]);
    }
    var body = convertHtmlToReact(firstTag, context);
    var requirePaths = _(defines).keys().map(function (reqName) { return '"' + reqName + '"'; }).value().join(',');
    var requireVars = _(defines).values().value().join(',');
    var vars;
    if (options.modules === 'typescript') {
        vars = _(defines).map(function (reqVar, reqPath) { return 'import ' + reqVar + " = require('" + reqPath + "');"; }).join('\n');
    } else if (options.modules === 'es6') {
        vars = _(defines).map(function (reqVar, reqPath) { return 'import {' + reqVar + "} from '" + reqPath + "';"; }).join('\n');
    } else {
        vars = _(defines).map(function (reqVar, reqPath) { return 'var ' + reqVar + " = require('" + reqPath + "');"; }).join('\n');
    }
    var data = {body: body, injectedFunctions: '', requireNames: requireVars, requirePaths: requirePaths, vars: vars, name: options.name};
    data.injectedFunctions = context.injectedFunctions.join('\n');
    var code = generate(data, options);
    if (options.modules !== 'typescript') {
        try {
            var tree = esprima.parse(code, {range: true, tokens: true, comment: true});
            tree = escodegen.attachComments(tree, tree.comments, tree.tokens);
            code = escodegen.generate(tree, {comment: true});
        } catch (e) {
            throw new RTCodeError(e.message, e.index, -1);
        }
    }
    return code;
}

function generate(data, options) {
    var template = templates[options.modules];
    return template(data);
}

/**
 * @param {string} code
 * @param node
 * @param context
 */
function validateJS(code, node, context) {
    try {
        esprima.parse(code);
    } catch (e) {
        throw RTCodeError.build(e.description, context, node);
    }
}

/**
 * @param {string} name
 * @return {string}
 */
function normalizeName(name) {
    return name.replace(/-/g, '_');
}

module.exports = {
    convertTemplateToReact: convertTemplateToReact,
    RTCodeError: RTCodeError,
    normalizeName: normalizeName,
    _test: {
        convertText: convertText
    }
};

},{"./RTCodeError":269,"./reactDOMSupport":270,"./stringUtils":272,"cheerio":1,"escodegen":63,"esprima-harmony":81,"lodash":107}],272:[function(require,module,exports){
'use strict';
var _ = require('lodash');

/**
 * @param {string} str
 * @return {string}
 */
function convertToCamelCase(str) {
    return str.replace(/-([a-z])/g, function (g) { return g[1].toUpperCase(); });
}

/**
 * @param {string} str
 * @return {string}
 */
function capitalize(str) {
    return str[0].toUpperCase() + str.slice(1);
}

/**
 * @param {Array.<*>} array
 * @param {*} obj
 */
function addIfNotThere(array, obj) {
    if (!_.contains(array, obj)) {
        array.push(obj);
    }
}

module.exports = {
    convertToCamelCase: convertToCamelCase,
    capitalize: capitalize,
    addIfNotThere: addIfNotThere
};
},{"lodash":107}],"react/addons":[function(require,module,exports){
module.exports = require('./lib/ReactWithAddons');

},{"./lib/ReactWithAddons":198}]},{},[268]);