Merge branch 'MDL-55856-master' of git://github.com/danpoltawski/moodle

Gruntfile.js

@@ -30,7 +30,15 @@ module.exports = function(grunt) {
         cwd = process.env.PWD || process.cwd(),
         async = require('async'),
         DOMParser = require('xmldom').DOMParser,
-        xpath = require('xpath');
+        xpath = require('xpath'),
+        semver = require('semver');
+
+    // Verify the node version is new enough.
+    var expected = semver.validRange(grunt.file.readJSON('package.json').engines.node);
+    var actual = semver.valid(process.version);
+    if (!semver.satisfies(actual, expected)) {
+        grunt.fail.fatal('Node version too old. Require ' + expected + ', version installed: ' + actual);
+    }
 
     // Windows users can't run grunt in a subdirectory, so allow them to set
     // the root by passing --root=path/to/dir.

package.json

@@ -11,6 +11,7 @@
     "grunt-contrib-watch": "1.0.0",
     "grunt-eslint": "19.0.0",
     "grunt-stylelint": "0.6.0",
+    "semver": "5.3.0",
     "shifter": "0.5.0",
     "stylelint-checkstyle-formatter": "0.1.0",
     "xmldom": "0.1.22",