Izmjenjena struktura, dodan backand

web/node_modules/react/lib/ReactElementSymbol.js

@@ -0,0 +1,17 @@
+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * 
+ */
+
+'use strict';
+
+// The Symbol used to tag the ReactElement type. If there is no native Symbol
+// nor polyfill, then a plain number is used for performance.
+
+var REACT_ELEMENT_TYPE = typeof Symbol === 'function' && Symbol['for'] && Symbol['for']('react.element') || 0xeac7;
+
+module.exports = REACT_ELEMENT_TYPE;