[BenoitEssiambre]

I'm not sure it's much less code. Especially that async/await is integrated into the language now. It's less state, less corner cases, more encapsulation and better performance.

I'm thinking of trying (if I have time) to build a babel transpiler plug-in so you could use it with keywords like async/await instead of explicitly wrapping generator functions. I think the syntax would end up very simple.