react app

react-app/node_modules/react/lib/ServerReactRootIndex.js

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+/**
+ * Copyright 2013-2015, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ * @providesModule ServerReactRootIndex
+ * @typechecks
+ */
+
+'use strict';
+
+/**
+ * Size of the reactRoot ID space. We generate random numbers for React root
+ * IDs and if there's a collision the events and DOM update system will
+ * get confused. In the future we need a way to generate GUIDs but for
+ * now this will work on a smaller scale.
+ */
+var GLOBAL_MOUNT_POINT_MAX = Math.pow(2, 53);
+
+var ServerReactRootIndex = {
+  createReactRootIndex: function() {
+    return Math.ceil(Math.random() * GLOBAL_MOUNT_POINT_MAX);
+  }
+};
+
+module.exports = ServerReactRootIndex;