qosenergy / shared-store-hook Goto Github PK

Is there a way to make this awesome statemanagement library compatible with SSR?

Now React throws this warning:

Warning: useLayoutEffect does nothing on the server, because its effect cannot be encoded into the server renderer's output format. This will lead to a mismatch between the initial, non-hydrated UI and the intended UI. To avoid this, useLayoutEffect should only be used in components that render exclusively on the client

BTW thx for making a alternative for "use-global-hook" this library is way beter and migrating was quite easy thanks to you.

When a new subscribing component calls a shared store hook, the state it will get back is first computed, and then adding this component to the subscribers set is done in a useEffect.

If a state update happens between these two steps (after the return value is computed but before the addition to the subscribers set is performed), the component may get a pre-update state back, and may not be re-rendered on this update.

To avoid this, a useLayoutEffect has to be used in place of the UseEffect, to make sure that the subscription happens before the state change.

How would you approach modifying the state of one store from another? Is this a sign that the states should be merged into one? Please see a contrived example below (with an obvious misuse of hooks):

const useUser = createSharedStoreHook(...);
const useCart = createSharedStoreHook({
  actions: {
    updateCartBasedOnUserState() {
       // const [userState] = useUser();
       // ...
    }
  },
})