Source code
Revision control
Copy as Markdown
Other Tools
// 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: >
Throws a TypeError exception if trap is not callable.
info: |
[[PreventExtensions]] ( )
...
1. Let handler be the value of the [[ProxyHandler]] internal slot of O.
...
5. Let trap be GetMethod(handler, "preventExtensions").
...
7.3.9 GetMethod (O, P)
...
2. Let func be GetV(O, P).
5. If IsCallable(func) is false, throw a TypeError exception.
...
features: [Proxy]
---*/
var target = {};
var p = new Proxy(target, {
preventExtensions: {}
});
assert.throws(TypeError, function() {
Object.preventExtensions(p);
});
reportCompare(0, 0);