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33 lines
743 B
JavaScript
33 lines
743 B
JavaScript
// Copyright (C) 2015 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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es6id: 9.5.12
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description: >
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If target is not extensible, the result must contain all the keys of the own
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properties of the target object.
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info: >
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[[OwnPropertyKeys]] ( )
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...
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23. Repeat, for each key that is an element of targetConfigurableKeys,
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a. If key is not an element of uncheckedResultKeys, throw a TypeError
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exception.
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---*/
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var target = {
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foo: 1,
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bar: 2
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};
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var p = new Proxy(target, {
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ownKeys: function() {
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return ["foo"];
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}
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});
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Object.preventExtensions(target);
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assert.throws(TypeError, function() {
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Object.keys(p);
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});
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