es7 proposal/polyfill?: base Map/WeakMap off Proxy + Weak References

Boris Zbarsky bzbarsky at
Fri Feb 19 20:59:50 UTC 2016

On 2/19/16 3:50 PM, Coroutines wrote:
> Side discussion: Why does Javascript have this limitation? - what I
> view as a limitation?  You'd think this could be supported without
> breaking older JS..

I don't see how it could.  I'll bet $50 someone out there is using 
obj[location] for example.


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