Xstate/store is SSOT or multi?

[popuguytheparrot]

Hi,
I have a question about XState/store. Is it designed as a single source of truth (SSOT), or is it possible to create multiple stores?

Additionally, what are the recommended ways to derive computed data from two different stores?

Thanks in advance!

[davidkpiano]

Currently, XState Store is designed to make it easy to create multiple stores.

You can derive data from two different stores by subscribing to each store and setting the derived data somewhere. Can you provide more information about your use-case?

[popuguytheparrot]

const counter = createStore(0);
const currentUser = createStore('Alex')
const currentUserCounter = ... ???  // here computed state `${currentUser} counter is ${counter}`

[davidkpiano]

Working on this here: #5221