[keedot]

No, you don't have to use TypeScript, the angular dev team has been clear on this. You don't have to use atscript either. That said, typescript is pretty slick, and is essentially ES6+, I'd recommend giving it a shot before dismissing it.

[user1241320]

Great. As far as I know there's no atscript anymore. So that's clear. But again browsing around https://angular.io/ one would read TS all over the place and, surprisingly, es6 is barely ever mentioned.

edit

I'm not dismissing TypeScript (in fact I love types being also a Scala dev)... I was just surprised Angular2 skips es6 altogether. That's it.

[ShMcK]

Actually, the ES6 and TypeScript versions are virtually indistinguishable, so it's not worth posting both on the site. The only difference being the types/interfaces are dropped in ES6.