text: /**
   * Copyright 2013-2014 Facebook, Inc.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   *
   * @providesModule shallowEqual
   */
  
  "use strict";
  
  /**
   * Performs equality by iterating through keys on an object and returning
   * false when any key has values which are not strictly equal between
   * objA and objB. Returns true when the values of all keys are strictly equal.
   *
   * @return {boolean}
   */
  function shallowEqual(objA, objB) {
    if (objA === objB) {
      return true;
    }
    var key;
    // Test for A's keys different from B.
    for (key in objA) {
      if (objA.hasOwnProperty(key) &&
          (!objB.hasOwnProperty(key) || objA[key] !== objB[key])) {
        return false;
      }
    }
    // Test for B's keys missing from A.
    for (key in objB) {
      if (objB.hasOwnProperty(key) && !objA.hasOwnProperty(key)) {
        return false;
      }
    }
    return true;
  }
  
  module.exports = shallowEqual;
  