Add karma-es6-shim for ES6 support (React16 uses Set) for phantomJS

Author: kevinzwhuang

karma.conf.js

@@ -15,7 +15,8 @@ module.exports = function(karma) {
     singleRun: false,
     frameworks: [
       'jasmine',
-      'phantomjs-shim'
+      'phantomjs-shim',
+      'es6-shim'
     ],
     preprocessors: {
       'tests.webpack.js': 'webpack'

package-lock.json

@@ -58,6 +58,7 @@
     "json-loader": "^0.5.4",
     "karma": "^0.13.22",
     "karma-coverage": "^1.0.0",
+    "karma-es6-shim": "^1.0.0",
     "karma-jasmine": "^1.0.2",
     "karma-phantomjs-launcher": "^1.0.0",
     "karma-phantomjs-shim": "^1.4.0",