- From: <bugzilla@jessica.w3.org>
- Date: Tue, 08 Oct 2013 07:48:40 +0000
- To: public-script-coord@w3.org
https://www.w3.org/Bugs/Public/show_bug.cgi?id=21929
Tom Van Cutsem <tomvc.be@gmail.com> changed:
What |Removed |Added
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CC| |tomvc.be@gmail.com
--- Comment #4 from Tom Van Cutsem <tomvc.be@gmail.com> ---
(In reply to Travis Leithead [MSFT] from comment #3)
> Is this behavior for [[DefineOwnProperty]], now basically the same as if the
> named properties object were considered non-extensible?
No, an object marked non-extensible cannot acquire new own properties (whether
via [[DefineOwnProperty]] or via some external means). That's what it means to
be non-extensible.
I believe Cameron's fix of simply making [[DefineOwnProperty]] reject any
updates is fine in terms of ES6 invariants. This could be self-hosted as a
proxy that just returns 'false' from its defineOwnProperty trap.
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Received on Tuesday, 8 October 2013 07:48:45 UTC