Kevin Gibbons

Do note that this is _not_ the same semantics as ES Maps use, because deletion is specified differently. Specifically, for an ES Map, deleting leaves a `~empty~` tombstone rather than...

Offhand nothing else occurs to me, though you might be able to find something in the literature. If you're trying to get exactly ES Map semantics, using the same specification...

I'd like it addressed before stage 3, ideally. But I'm fine with saying that the PR is the canonical spec text for the purposes of stage 3, if you want...

This seems to have gotten off topic - this issue is for an editorial issue with the definition of liveness. If you want to debate whether / how `Symbol.for` symbols...

Duplicate of https://github.com/prettier/prettier/issues/2482.

@B2o5T #2482 is not closed or marked as resolved, as far as I can tell? [Though it was locked, which I've just fixed.]

I believe this is a duplicate of #2482.

This isn't quite what I'd suggested in some of the details, but it makes more sense than what I suggested, and I am very happy with what's here.

@mhofman Implementations are free to use a wrapper internally for performance reasons, just as previously they were free to create an actual copy instead of wrapping. > how would such...

> Note that there seems to be some demand for this on the TC39 side so proxy objects can be serialized, which seems like a legitimate use case. I think...