--- /dev/null
+'use strict';
+
+var callable = require('../../object/valid-callable')
+ , defineLength = require('../_define-length')
+
+ , apply = Function.prototype.apply;
+
+module.exports = function () {
+ var fn = callable(this);
+
+ return defineLength(function () {
+ return !apply.call(fn, this, arguments);
+ }, fn.length);
+};