In 2019, Marco Vieth the author of the first Amstrad CPC forr msdos (now maintained by Rainer Lortiz) did release CPCBasic unchained which is converting a Locomotive Basic program of an Amstrad CPC in javascript to use it on a web site.

This version only receive bugs fixes, it's now CPCBasicTS unchained (TS for TypeScript) which is developped, and a new version 0.1.1 was released two weeks ago.