Source code
Revision control
Copy as Markdown
Other Tools
// Copyright (C) 2017 Caio Lima. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: Mapped arguments property descriptor change with non-configurable property
info: |
Mapping keep working when property is set to non-configurable and its
value is changed using arguments[i] where "i" is the argument index.
flags: [noStrict]
esid: sec-arguments-exotic-objects-defineownproperty-p-desc
includes: [propertyHelper.js]
---*/
function argumentsAndSetByIndex(a) {
Object.defineProperty(arguments, "0", {configurable: false});
arguments[0] = 2;
assert.sameValue(a, 2);
verifyProperty(arguments, "0", {
value: 2,
writable: true,
enumerable: true,
configurable: false,
});
}
argumentsAndSetByIndex(1);
reportCompare(0, 0);