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38 lines
1.2 KiB
JavaScript
38 lines
1.2 KiB
JavaScript
// Copyright (C) 2016 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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esid: sec-object-initializer
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description: Permitted duplicate `__proto__` property
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info: |
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Annex B defines an early error for duplicate PropertyName of `__proto__`,
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but this does not apply to properties created from other productions.
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B.3.1 __proto__ Property Names in Object Initializers
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It is a Syntax Error if PropertyNameList of PropertyDefinitionList contains
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any duplicate entries for "__proto__" and at least two of those entries
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were obtained from productions of the form
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PropertyDefinition : PropertyName : AssignmentExpression .
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features: [generators, async-functions, async-iteration, __proto__]
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---*/
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var obj = {
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__proto__: null,
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__proto_: null,
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__proto: null,
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_proto__: null,
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proto__: null,
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['__proto__']: null,
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__proto__() {},
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* __proto__() {},
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async __proto__() {},
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async * __proto__() {},
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get __proto__() { return 33; },
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set __proto__(_) { return 44; }
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};
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var desc = Object.getOwnPropertyDescriptor(obj, '__proto__');
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assert.sameValue(desc.get(), 33);
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assert.sameValue(desc.set(), 44);
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