I've debated going back to Perl since javascript is such a mess these days.
You should really look how horribly it's implemented there, and you won't go back. The idea is great, but the idea should be based on some clever scalable implementation idea. There was none.
Are you talking about Perl?
perl6. (ie. parrot and moarvm).
Perl has no grammars builtin. I'e started working on it but it will need a long time.