From a69f8a3db9e83b7d2f250d374eaa6bc1fa43e3bf Mon Sep 17 00:00:00 2001
From: muxator <a.mux@inwind.it>
Date: Fri, 27 Jul 2018 01:51:28 +0200
Subject: [PATCH] runtime: deprecate Node <= 7. From Etherpad 1.8.0 minimum
 Node version will be 8

---
 src/node/server.js            |  5 +++++
 src/node/utils/NodeVersion.js | 17 +++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/src/node/server.js b/src/node/server.js
index 8972f252..9ccedfa6 100755
--- a/src/node/server.js
+++ b/src/node/server.js
@@ -45,6 +45,11 @@ async.waterfall([
     NodeVersion.enforceMinNodeVersion('6.9.0', callback);
   },
 
+  function(callback)
+  {
+    NodeVersion.checkDeprecationStatus('8.9.0', '1.8.0', callback);
+  },
+
   // load npm
   function(callback) {
     npm.load({}, function(er) {
diff --git a/src/node/utils/NodeVersion.js b/src/node/utils/NodeVersion.js
index bee58f02..49c1efe8 100644
--- a/src/node/utils/NodeVersion.js
+++ b/src/node/utils/NodeVersion.js
@@ -35,3 +35,20 @@ exports.enforceMinNodeVersion = function(minNodeVersion, callback) {
     callback();
   }
 };
+
+/**
+ * Prints a warning if running on a supported but deprecated Node version
+ *
+ * @param  {String}    lowestNonDeprecatedNodeVersion   all Node version less than this one are deprecated
+ * @param  {Function}  epRemovalVersion                 Etherpad version that will remove support for deprecated Node releases
+ */
+exports.checkDeprecationStatus = function(lowestNonDeprecatedNodeVersion, epRemovalVersion, callback) {
+  const semver = require('semver');
+  const currentNodeVersion = process.version;
+
+  if (semver.lt(currentNodeVersion, lowestNonDeprecatedNodeVersion)) {
+    console.warn(`Support for Node ${currentNodeVersion} will be removed in Etherpad ${epRemovalVersion}. Please consider updating at least to Node ${lowestNonDeprecatedNodeVersion}`);
+  }
+
+  callback();
+};