| // 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 handler is null. | |
| features: [Proxy] | |
| ---*/ | |
| var p = Proxy.revocable({}, {}); | |
| p.revoke(); | |
| assert.throws(TypeError, function() { | |
| Object.preventExtensions(p.proxy); | |
| }); |