Despite all the hype, I don't think this will ever realistically happen. interface-types is (supposedly) here but it can't really hold onto DOM objects, it can only reference them, and nobody has made DOM bindings for interface-types yet. GC is an extraordinarily hard problem, and they've talked about scoping out "mini-mini-MVPs" for about a year now, with basically no progress.

I wrote an essay about this a few years ago but never decided to publish it because I felt it was too harsh, but I think it gives a better overview of the challenges involved: https://gist.github.com/magcius/8959ca1f5bbde4bd66b98b6d5dc7...

This is the proposal tracking this: https://github.com/WebAssembly/proposals/issues/16

No recent updates unfortunately.