What are some reasons this is interesting when great embedded JavaScript/TypeScript runtimes (like Moddable's XS, which runs on microcontrollers with as little as 32 KB RAM) exist?
Having only looked at both projects and not using either, to me there are 2 standout features berry has over xs.
1. It appears straight forward to add native functionality to berry.
2. Berry has the ability to compile code to ROM.
Maybe xs has that functionality too, but I don't see it anywhere in the top levels of it's docs. One thing I see missing from the berry docs is the debugging process. That could be a rather significant drawback of it isn't easy.
