2 * for-in <https://github.com/jonschlinkert/for-in>
4 * Copyright (c) 2014-2017, Jon Schlinkert.
5 * Released under the MIT License.
10 module.exports = function forIn(obj, fn, thisArg) {
11 for (var key in obj) {
12 if (fn.call(thisArg, obj[key], key, obj) === false) {