What you're looking for is Async Generators [0]. They were in traceur master not too long ago, but I'm not sure if they have been pulled out ([0] indicates tha

What you're looking for is Async Generators [0]. They were in traceur master not too long ago, but I'm not sure if they have been pulled out ([0] indicates that the proposal was pulled and replaced with the lesser Observable). [0] https://github.com/jhusain/asyncgenerator https://github.com/jhusain/asyncgenerator