[Harmony Proxies] On property descriptor auto-completion in defineProperty/get{Own}PropertyDescriptor traps (derived from: [Harmony Proxies] Proposal: Property fixing)

[Tom Van Cutsem]

>
> Going in the direction you're describing would open the door for a
> Object.getPrototypeOf trap (which I'm fine with).
>
> David
>

How exactly would Allen's suggestion of relaxing the fix trap/configurable
constraints open the door for supporting mutable prototypes via a
getPrototypeOf trap? I must be missing something.

Cheers,
Tom
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