[Webkit-unassigned] [Bug 143239] No way to quickly make non-enumerable instance properties

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=143239

--- Comment #9 from Ryosuke Niwa <rniwa at webkit.org> ---
(In reply to comment #7)
>
> Anyway, it's completely wrong to conclude that something is fast the
> baseline (accessing .foo) is an order of magnitude slower than Chrome.

I don't think anyone is claiming that here.

This bug is about Ember.js wanting to define and access non-enumerable property without runtime penalty. Either making defineProperty fast or symbols perform as fast as strings would work (although we should really do both!)

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