Comment by geon

In typescript/js, you can iterate over async generators with for-await-of. Very ergonomic.

This article sums it up pretty well: https://medium.com/@bhagyarana80/why-async-generators-were-t...

In nodejs, all streams are async iterables, so you can iterate over them. Really nice for handling stuff like connections to a server, or messages on a socket.

I’ve use generators to code ui “sagas”. You await async events like clicks etc, and yield the appropriate state updates. A sub-dialog can be implemented as a separate generator, and the main dialog generator can open it by with the yield* syntax to iterate over and pass on all the events until the generator returns. The return value would be the result of the dialog.

Super nifty.