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Issue 776143005: Optimize Object.seal and Object.preventExtensions (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Add support for preventExtensions Created 6 years ago
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1 // Copyright 2014 the V8 project authors. All rights reserved. 1 // Copyright 2014 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 for (var x in this) {}; 5 Object.freeze(this);
6 JSON.stringify(this); 6 assertTrue(Object.isFrozen(this));
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