Support non typescript applications

[morsdyce]

Hi, this looks like a great tool and even something I thought about building myself a lot of times.

I'm curious why you're using the typescript compiler to parse the application instead of babel (with typescript parser).
It has the exact same api and can support both regular javascript and typescript together.

[nivekcode]

@morsdyce that's a great idea. I only needed it for TypeScript and I was already familiar with TypeScript's AST. But it would be nice to add Babel and to support ES6 as well. 👍