On Jul 10, 2011, at 6:58 PM, Brendan Eich wrote:
> On Jul 10, 2011, at 10:54 AM, Allen Wirfs-Brock wrote:
>
>>>>
>>
>> Why not a non-writable,non-enumerable non-configurable data property on
>> Function.prototype.
>
> We're talking about isGenerator, right? There is no Generator constructor, no
> shadowing opportunity. Function can create a generator if yield occurs in the
> body string.
Oops, forgot we were talking about isGenerator. So why not internally defined
const __generatorProto__ = Object.create(Function.prototype, {isGenerator:
{value: true}});
and specify that function containing yield are created as if by:
__generatorProto__ <| function (...) {...yield...}
In other words, generator functions have a different [[Prototype]] than
regulator functions.
Alternatively, isGenerator could be a method, but that's the the point here.
Allen
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