      coffeelint: {
        pattern: /^app\/.*\.coffee$/,
        options: {
-@@ -325,6 +329,7 @@ exports.config = {
+@@ -309,6 +314,7 @@ exports.config = {
 
  const dirStack = ['./app'];
  const coffeeFiles = [];

           regJoin('^vendor/scripts/Box2dWeb-2.1.a.3'),
           regJoin('^vendor/scripts/string_score.js'),
           regJoin('^bower_components/underscore.string'),
@@ -154,7 +154,7 @@ exports.config = {

         // - vendor.js, all the vendor libraries
         'javascripts/vendor.js': [
-          regJoin(`^vendor/scripts/(?!(Box2d|coffeescript|difflib|diffview|jasmine|co|${gameLibraries}))`),
+          regJoin(`^vendor/scripts/(?!(Box2d|coffeescript|difflib|diffview|jasmine|polyfill|co|${gameLibraries}))`),
           regJoin(`^bower_components/(?!(aether|d3|treema|three.js|esper.js|jquery-ui|vimeo-player-js|${gameLibraries}))`),
           'bower_components/treema/treema-utils.js',
         ],
@@ -166,7 +166,7 @@ exports.config = {
         ],

         'javascripts/whole-vendor.js': TRAVIS ? [
-          regJoin('^vendor/scripts/(?!(Box2d|jasmine|register-game-libraries))'),
+          regJoin('^vendor/scripts/(?!(Box2d|jasmine|polyfill|register-game-libraries))'),
           regJoin('^bower_components/(?!aether|esper.js)'),
         ] : [],

@@ -192,6 +192,7 @@ exports.config = {
         'javascripts/app/vendor/coffeescript.js': 'vendor/scripts/coffeescript.js',
         'javascripts/app/vendor/difflib.js': 'vendor/scripts/difflib.js',
         'javascripts/app/vendor/diffview.js': 'vendor/scripts/diffview.js',

+  ]
 }
diff --git a/app/views/TestView.js b/app/views/TestView.js
index f155602..145c84c 100644
--- a/app/views/TestView.js
+++ b/app/views/TestView.js
@@ -13,6 +13,7 @@ const template = require('templates/test-view');
 const requireUtils = require('lib/requireUtils');
 const storage = require('core/storage');

