Izmjenjena struktura, dodan backand

web/node_modules/core-js/modules/$.get-names.js

@@ -0,0 +1,20 @@
+// fallback for IE11 buggy Object.getOwnPropertyNames with iframe and window
+var toIObject = require('./$.to-iobject')
+  , getNames  = require('./$').getNames
+  , toString  = {}.toString;
+
+var windowNames = typeof window == 'object' && Object.getOwnPropertyNames
+  ? Object.getOwnPropertyNames(window) : [];
+
+var getWindowNames = function(it){
+  try {
+    return getNames(it);
+  } catch(e){
+    return windowNames.slice();
+  }
+};
+
+module.exports.get = function getOwnPropertyNames(it){
+  if(windowNames && toString.call(it) == '[object Window]')return getWindowNames(it);
+  return getNames(toIObject(it));
+};