--- /dev/null
+'use strict';
+var $export = require('./_export')
+ , aFunction = require('./_a-function')
+ , toObject = require('./_to-object')
+ , fails = require('./_fails')
+ , $sort = [].sort
+ , test = [1, 2, 3];
+
+$export($export.P + $export.F * (fails(function(){
+ // IE8-
+ test.sort(undefined);
+}) || !fails(function(){
+ // V8 bug
+ test.sort(null);
+ // Old WebKit
+}) || !require('./_strict-method')($sort)), 'Array', {
+ // 22.1.3.25 Array.prototype.sort(comparefn)
+ sort: function sort(comparefn){
+ return comparefn === undefined
+ ? $sort.call(toObject(this))
+ : $sort.call(toObject(this), aFunction(comparefn));
+ }
+});
\ No newline at end of file