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29 lines
711 B
JavaScript
29 lines
711 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: 9.5.6
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description: >
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Throw a TypeError exception if Desc is not configurable and target is not
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extensible, and trap result is true.
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info: |
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[[DefineOwnProperty]] (P, Desc)
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...
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19. If targetDesc is undefined, then
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a. If extensibleTarget is false, throw a TypeError exception.
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...
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---*/
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var target = {};
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var p = new Proxy(target, {
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defineProperty: function(t, prop, desc) {
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return true;
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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.defineProperty(p, "foo", {});
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});
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