Save Object.observe()! (please) + make WeakMap/WeakSet observable.

[Benoit Marchant]

Proxy at the granularity of a property would be perfect for that

> On Nov 5, 2015, at 10:11, Matthew Robb <matthewwrobb at gmail.com> wrote:
> 
> 
>> On Thu, Nov 5, 2015 at 12:49 PM, Tom Van Cutsem <tomvc.be at gmail.com> wrote:
>> O.o is a much safer alternative to Proxy.startTrapping and covers at least part of its use cases.
> 
> ​Hmm.
> 
> Okay so pretend all object's are really just proxies to whatever their internal backing might be. In this scenario perhaps what we might want is `Proxy.observeTraps` which should work just like Object.observe only synchronously and without a baked in ability to intercede. One could, however, respond to a set operation by resetting the old value. What this does is give you something VERY close to a built in observable Model type on top of plain objects.
> 
> 
> 
> - Matthew Robb
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