https://github.com/janestreet/bonsai https://github.com/janestreet/bonsai is making some interesting distinctions between "UI state" and "model state". They're

https://github.com/janestreet/bonsai https://github.com/janestreet/bonsai is making some interesting distinctions between "UI state" and "model state". They're kept separate and they're working on utilities to manage the use of composed components.