/**
 * Copyright 2013 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 merge
 */

"use strict";

var mergeInto = require('mergeInto');

/**
 * Shallow merges two structures into a return value, without mutating either.
 *
 * @param {?object} one Optional object with properties to merge from.
 * @param {?object} two Optional object with properties to merge from.
 * @return {object} The shallow extension of one by two.
 */
var merge = function(one, two) {
  var result = {};
  mergeInto(result, one);
  mergeInto(result, two);
  return result;
};

module.exports = merge;
