This is nice. I tried to work out with a home-baked version of that for a while, because it had to be done, basically it is Cycle.js without the "drivers" thing, which is annoying.

Then I moved to some hybrid approach with dreno[1].

But since there were some corner cases which the framework didn't cover, I've settled later with karet[2], but using it like I did with dreno, not treating state as semi-local as they do on the TodoMVC.

[1]: https://github.com/fiatjaf/dreno/blob/master/docs/why.md

[2]: https://github.com/calmm-js/karet