test262/test/built-ins/Proxy/preventExtensions/trap-is-undefined.js

14 lines
375 B
JavaScript

// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 9.5.4
description: >
Return target.[[PreventExtensions]]() if target is undefined.
features: [Proxy, Reflect]
---*/
var target = {};
var p = new Proxy(target, {});
assert.sameValue(Reflect.preventExtensions(p), true);