/**
 * 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';

/**
 * `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.
 *
 * Note that this module is currently shared and assumed to be stateless.
 * If this becomes an actual Map, that will break.
 */

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._reactInternalFiber = undefined;
  },

  get: function(key) {
    return key._reactInternalFiber;
  },

  has: function(key) {
    return key._reactInternalFiber !== undefined;
  },

  set: function(key, value) {
    key._reactInternalFiber = value;
  },
};

module.exports = ReactInstanceMap;