On Thu, Jun 16, 2011 at 7:14 PM, Allen Wirfs-Brock <[email protected]>wrote:
> > On Jun 16, 2011, at 6:52 PM, Mark S. Miller wrote: > > > [object a] → [object b] → [Object prototype object] → null > > > > a is a proxy object and b is a normal object. If you define a non- > > configurable property on b, and you look up that property on a, can it > > still be reported as non-configurable? > > Perhaps I'm missing something here, but isn't the only way to actually > inspect (report?) the attributes of a property is via > Object.getOwnPropertyDescriptor so you can't use a to inspect the attributes > of a property of b, regardless or whether or not b is a Proxy. I believe > that the only operations on a that are sensitive to the value of the > configurable attribute only apply to own properties. > Was true until < http://wiki.ecmascript.org/doku.php?id=harmony:extended_object_api>. Perhaps we should simply withdraw the getPropertyDescriptor trap and avoid the whole problem? When in doubt, leave it out. -- Cheers, --MarkM
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