> it would do extra stuff like adding it to the Windows cert store if you're there, adding it to Firefox if you use it, etc
This is what mkcert does (FF on Windows not done yet, but FF everywhere else and OS root store is).
> And being package it's better to collaborate on than everyone making their own process (and possibly screwing it up)
Not sure the difference between it being an npm package or a Go project on GitHub is that large. Or are you saying "go build" is easier to screw up than "npm install"?
EDIT: My mistake, misunderstood the context of the comment.