test/built-ins/Proxy/preventExtensions/null-handler.js


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// 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.
---*/

var p = Proxy.revocable({}, {});

p.revoke();

assert.throws(TypeError, function() {
  Object.preventExtensions(p.proxy);
});