Comment by pizlonator

I'll port Epiphany eventually.

WebKit's JS engine (JavaScriptCore) is super friendly to pointer capabilities. I did not have to change much to make it use the Fil-C GC instead of its own GC and to make it use a capability per JS object.

On the other hand, Chromium's JS engine (V8) does a bunch of crazy stuff with pointer encoding, so the best you could do there is probably a single arena for the whole JS heap.

Also, JavaScriptCore has a well-supported mode that involves not only zero JIT but a fully portable C++ interpreter. Not sure V8 has that.