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[Bug 27381] Basing Object.observe() for IDL objects on internal slots

From: <bugzilla@jessica.w3.org>
Date: Thu, 20 Nov 2014 15:46:27 +0000
To: public-script-coord@w3.org
Message-ID: <bug-27381-3890-BlMw97Q7qb@http.www.w3.org/Bugs/Public/>
https://www.w3.org/Bugs/Public/show_bug.cgi?id=27381

Boris Zbarsky <bzbarsky@mit.edu> changed:

           What    |Removed                     |Added
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                 CC|                            |bzbarsky@mit.edu

--- Comment #5 from Boris Zbarsky <bzbarsky@mit.edu> ---
We could think about it.

The requirement to _actually_ have an internal slot (to have the old value
available) as opposed to conceptually having an internal slot as a
specification device should not be made lightly, because it can affect the
ability of engines to space-optimize.

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