This is the relevant GitHub issue to subscribe to for updates:
https://github.com/gosu/gosu/issues/406It's unlikely that I'll just implement this on a weekend though. I am not a web developer, and I also wonder if it really makes sense to port Gosu to the browser. Is the interface even a good fit in terms of performance? I don't know.
My personal hope is that someone else figures out how to deploy Ruby everywhere (even Windows and macOS are a pain to be honest), and then I'll piggyback on that with Gosu :)