State of store can change before the provider subscribes

[joshjg]

Currently, there is a timing issue when children dispatch an action inside useEffect during their first render. Here's the order of events:

1. Some consumer reads the initial value via useMapState
2. A child of the provider dispatches an action inside useEffect
3. The provider itself subscribes to the store via useEffect

As a result, consumers are not updated with the new state value. Here's how react-redux handles this: https://github.com/reduxjs/react-redux/blob/72ed6db1947913bdd4900b324243c43a490b4c5a/src/components/Provider.js#L56

[esamattis]

Thanks for bringing this up. Will look into it.

[esamattis]

Fix released in v0.5.4