add dry run option

src/api.js

@@ -7,7 +7,7 @@ var convertTemplateToReact = reactTemplates.convertTemplateToReact;
 
 /**
  * @param {string} source
- * @param {{commonJS:boolean}?} options
+ * @param {{commonJS:boolean, dryRun:boolean}?} options
  * @param {string} target
  * @param {CONTEXT} context
  */
@@ -29,7 +29,9 @@ function convertFile(source, target, options, context) {
         throw new Error('invalid file, missing header');
     }
     var js = convertTemplateToReact(html, options);
-    fs.writeFileSync(target, js);
+    if (!options.dryRun) {
+        fs.writeFileSync(target, js);
+    }
 }
 
 module.exports = {

src/options.js

@@ -46,6 +46,12 @@ module.exports = optionator({
         default: 'false',
         type: 'Boolean',
         description: 'Use Common JS output.'
+    }, {
+        option: 'dry-run',
+        alias: 'd',
+        default: 'false',
+        type: 'Boolean',
+        description: 'Run compilation without creating an output file, used to check if the file is valid'
     }, {
         option: 'force',
         alias: 'r',
@@ -64,7 +70,6 @@ module.exports = optionator({
         alias: 't',
         type: 'String',
         default: '0.12.1',
-        //enum: ['stylish', 'json'],
         description: 'React version to generate code for (' + Object.keys(reactDOMSupport).join(', ') + ')'
     }, {
         option: 'version',