--- /dev/null
+'use strict';
+
+var callable = require('./valid-callable')
+ , forEach = require('./for-each')
+
+ , call = Function.prototype.call
+
+ , defaultCb = function (value, key) { return [key, value]; };
+
+module.exports = function (obj/*, cb, thisArg, compareFn*/) {
+ var a = [], cb = arguments[1], thisArg = arguments[2];
+ cb = (cb == null) ? defaultCb : callable(cb);
+
+ forEach(obj, function (value, key, obj, index) {
+ a.push(call.call(cb, thisArg, value, key, this, index));
+ }, obj, arguments[3]);
+ return a;
+};