Notification proxies (Was: possible excessive proxy invariants for Object.keys/etc??)

Tom Van Cutsem at
Sun Dec 2 08:27:16 PST 2012

2012/11/28 Brandon Benvie <brandon at>

> Object.observe would fit under "after" correct?

Yes, with two remarks:
- it only traps updating operations
- the traps are called in a separate turn (i.e. asynchronously), so they
cannot change the result of the operation

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