On Apr 21, 2013, at 11:12 AM, Brendan Eich wrote:
> David Herman wrote:
>> On Apr 21, 2013, at 8:55 AM, Allen Wirfs-Brock<[email protected]> wrote:
>>
>>> Deleting Object.prototype.__proto__ will not be be specified as disabling
>>> {__proto__: foo}.
>>
>> Was that what we'd agreed to?
>
> I think what Allen means is, whether or not there's a magic
> Object.prototype.__proto__, you can define (as in [[DefineOwnProperty]]) a
> plain old data property (or an accessor, for that matter, just different
> syntax) whose name is '__proto__' in an object literal.
No, see the spec. strawman I posted.
What I mean is that:
let obj = {__proto__: null}
will always create an object whose [[Prototype]] is null. Regardless of
whether or not anybody has done:
delete Object.prototype.__proto__.
There is no good reason to link the semantics of __proto__ in an object literal
to the existence of Dunder proto on Object.prototype. The standard semantics
of object literal properties in ES5 have no dependencies upon the shape of
Object.prototype.
>
>
> This is specified by ES5, already.
Doesn't matter because what ES5 specifies is already incompatible with web
reality when the property name is __proto__.
Allen
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