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6bbc5596b1
PR-URL: https://github.com/nodejs/node/pull/42740 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Richard Lau <rlau@redhat.com>
26 lines
622 B
JavaScript
26 lines
622 B
JavaScript
// Copyright 2022 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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class Base {
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constructor(arg) {
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return arg;
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}
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}
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class ClassNonExtensibleWithIndexField extends Base {
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[0] = (() => {
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Object.preventExtensions(this);
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return 'defined';
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})();
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['nonExtensible'] = 4;
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constructor(arg) {
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super(arg);
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}
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}
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assertThrows(() => {
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new ClassNonExtensibleWithIndexField(globalThis);
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}, TypeError, /Cannot define property 0, object is not extensible/);
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assertEquals("undefined", typeof nonExtensible);
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