react app

react-app/node_modules/react/lib/ReactInstanceMap.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 ReactInstanceMap
+ */
+
+'use strict';
+
+/**
+ * `ReactInstanceMap` maintains a mapping from a public facing stateful
+ * instance (key) and the internal representation (value). This allows public
+ * methods to accept the user facing instance as an argument and map them back
+ * to internal methods.
+ */
+
+// TODO: Replace this with ES6: var ReactInstanceMap = new Map();
+var ReactInstanceMap = {
+
+  /**
+   * This API should be called `delete` but we'd have to make sure to always
+   * transform these to strings for IE support. When this transform is fully
+   * supported we can rename it.
+   */
+  remove: function(key) {
+    key._reactInternalInstance = undefined;
+  },
+
+  get: function(key) {
+    return key._reactInternalInstance;
+  },
+
+  has: function(key) {
+    return key._reactInternalInstance !== undefined;
+  },
+
+  set: function(key, value) {
+    key._reactInternalInstance = value;
+  }
+
+};
+
+module.exports = ReactInstanceMap;