Yo there's a new release of Spritely's Hoot Scheme->Webassembly compiler... v0.4.0! https://spritely.institute/news/guile-hoot-v040-released.html

And this one, yes, at last includes user-defined module support!

But it's also way better in terms of debugging, disassembly, and like a bajillion bug fixes, not to mention call/cc...!

Scheme in the browser, it's happening!!!