Izmjenjena struktura, dodan backand

web/node_modules/react-dom/lib/ReactReifiedYield.js

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+/**
+ * Copyright (c) 2013-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';
+
+var _require = require('./ReactFiber'),
+    createFiberFromElementType = _require.createFiberFromElementType;
+
+exports.createReifiedYield = function (yieldNode) {
+  var fiber = createFiberFromElementType(yieldNode.continuation, yieldNode.key);
+  return {
+    continuation: fiber,
+    props: yieldNode.props
+  };
+};
+
+exports.createUpdatedReifiedYield = function (previousYield, yieldNode) {
+  return {
+    continuation: previousYield.continuation,
+    props: yieldNode.props
+  };
+};