Weak event listener

Rick Waldron waldron.rick at gmail.com
Tue Mar 26 09:11:41 PDT 2013

On Tue, Mar 26, 2013 at 9:46 AM, Tom Van Cutsem <tomvc.be at gmail.com> wrote:

> 2013/3/26 Juan Ignacio Dopazo <dopazo.juan at gmail.com>
>> 2013/3/25 Erik Arvidsson <erik.arvidsson at gmail.com>
>>> WeakMap would not work in this specific case since a WeakMap cannot be
>>> iteratered.
>> I thought there was an iterable WeakSet for ES6. Was it postponed to ES7
>> or just dropped?
> I doubt there was ever an *iterable* WeakSet proposal, since iteration
> would make GC of the weakly held values observable. This is exactly the
> same reason why WeakMap isn't iterable.
> Cheers,
> Tom
TC39 reached consensus on the inclusion of WeakSet, though it needs to be

Mark Miller proposed semantics for WeakRefs to satisfy security concerns:

Both of these should be discussed at the next meeting.

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