/**
 * 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 reactKeys
 */

"use strict";

/**
 * Similar to Object.keys() but does not fail on empty parameter.
 */
var keys = function(obj) {
  var ret = [], aKey;
  for (aKey in obj) {
    if (obj.hasOwnProperty(aKey)) {
      ret.push(aKey);
    }
  }
  return ret;
};

module.exports = keys;
