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37 lines
1.2 KiB
JavaScript
37 lines
1.2 KiB
JavaScript
// Copyright (C) 2020 Rick Waldron. 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.seal
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description: >
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Object.seal RegExp
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info: |
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If Type(O) is not Object, return O.
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Let status be ? SetIntegrityLevel(O, sealed).
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SetIntegrityLevel ( O, level )
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Assert: Type(O) is Object.
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Assert: level is either sealed or frozen.
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Let status be ? O.[[PreventExtensions]]().
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If status is false, return false.
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Let keys be ? O.[[OwnPropertyKeys]]().
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If level is sealed, then
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For each element k of keys, do
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Perform ? DefinePropertyOrThrow(O, k, PropertyDescriptor { [[Configurable]]: false }).
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Else,
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Assert: level is frozen.
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For each element k of keys, do
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Let currentDesc be ? O.[[GetOwnProperty]](k).
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If currentDesc is not undefined, then
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If IsAccessorDescriptor(currentDesc) is true, then
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Let desc be the PropertyDescriptor { [[Configurable]]: false }.
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Else,
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Let desc be the PropertyDescriptor { [[Configurable]]: false, [[Writable]]: false }.
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Perform ? DefinePropertyOrThrow(O, k, desc).
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Return true.
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---*/
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Object.seal(new RegExp(""));
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