Use uglify-es for ES6 support (#6402)

install/package.json

@@ -100,7 +100,7 @@
         "spdx-license-list": "^3.0.1",
         "spider-detector": "1.0.18",
         "toobusy-js": "^0.5.1",
-        "uglify-js": "^3.3.4",
+        "uglify-es": "^3.3.9",
         "validator": "9.2.0",
         "winston": "^2.4.0",
         "xml": "^1.0.1",

install/web.js

@@ -8,7 +8,7 @@ var path = require('path');
 var childProcess = require('child_process');
 var less = require('less');
 var async = require('async');
-var uglify = require('uglify-js');
+var uglify = require('uglify-es');
 var nconf = require('nconf');
 var Benchpress = require('benchpressjs');
 

src/meta/minifier.js

@@ -2,7 +2,7 @@
 
 var fs = require('fs');
 var os = require('os');
-var uglifyjs = require('uglify-js');
+var uglify = require('uglify-es');
 var async = require('async');
 var winston = require('winston');
 var less = require('less');
@@ -178,7 +178,7 @@ function minifyJS_batch(data, callback) {
 			scripts[filename] = file;
 
 			try {
-				var minified = uglifyjs.minify(scripts, {
+				var minified = uglify.minify(scripts, {
 					sourceMap: {
 						filename: filename,
 						url: filename + '.map',
@@ -229,7 +229,7 @@ function minifyJS(data, callback) {
 			scripts[ref.filename] = ref.source;
 		});
 
-		var minified = uglifyjs.minify(scripts, {
+		var minified = uglify.minify(scripts, {
 			sourceMap: {
 				filename: data.filename,
 				url: data.filename + '.map',