--- /dev/null
+'use strict';
+
+var mixin = require('../../object/mixin')
+ , validFunction = require('../valid-function')
+
+ , re = /^\s*function\s*([\0-'\)-\uffff]+)*\s*\(([\0-\(\*-\uffff]*)\)\s*\{/;
+
+module.exports = function () {
+ var match = String(validFunction(this)).match(re), fn;
+
+ fn = new Function('fn', 'return function ' + match[1].trim() + '(' +
+ match[2] + ') { return fn.apply(this, arguments); };')(this);
+ try { mixin(fn, this); } catch (ignore) {}
+ return fn;
+};