No, js is not powerful enough for getting the same features that Emacs have, because emacs is almost an operating system. With js you could create a very simpl

No, js is not powerful enough for getting the same features that Emacs have, because emacs is almost an operating system. With js you could create a very simplified version, if you remove 95% of the emacs codebase. Most people just use 1-2% of emacs anyway, and there are editors that just do that, control a simple text editor with js.