What's the point of starting anything new, when something like it already exists? Why become a doctor when there are already good doctors? Why write a book when there are already good books? Why sing a song when somebody else already sings it better?

I suppose this could be useful when generating a statistically compiled binary

Well, maybe they will come with a better Google Closure in Go

Because Google Closure Compiler is unbelievably slow

At least two concrete reasons:

1. No cgo required. 2. Portable to any platform Go runs on that V8 doesn't.