[morgancmartin]

I'm not familiar with MobX, but I am a big fan of Jotai (https://jotai.pmnd.rs/). It is a spiritual offshoot of Facebook's experimental(?) Recoil library.

It is a bottom up approach to state. Everything is modeled as atoms. Atoms can be defined in any module and are accessed by simply exporting/importing from/to the module. Simply call the useAtom hook and you're now using that state atom.

Under the covers it is scoped via a top-level React context, I believe.

Atom derivation, read/write, async, it's all there. It also hooks into a lot of other popular state libs like redux, XState, Zustand and many others.

I much prefer it to Redux because there is zero boilerplate and extremely flexible. It can be easy to hang yourself with all the extra rope it gives you if you aren't careful though.