1  /*!
 2   * for-in <https://github.com/jonschlinkert/for-in>
 3   *
 4   * Copyright (c) 2014-2017, Jon Schlinkert.
 5   * Released under the MIT License.
 6   */
 7  
 8  'use strict';
 9  
10  module.exports = function forIn(obj, fn, thisArg) {
11    for (var key in obj) {
12      if (fn.call(thisArg, obj[key], key, obj) === false) {
13        break;
14      }
15    }
16  };