[Mitranim]

I guess this needs a bigger answer.

A well-designed tool should minimise the amount of states the program can be in. Asynchronous programming is already horrifically bad, it generates combinatorial explosions of intermediary states. Adding imperative, mutative programming and an event-driven API only exacerbates the problem, increasing the amount of possible state sequences even further. I don't think xtream provides a good API.