Support ref unwrapping in `state`

[posva]

Currently, passing a ref to the state is unwrapped because the store is a reactive object but the types do not reflect it:

const useStore = defineStore({ state: () => ({ n: ref(0) }) })

const store = useStore()
store.n // Ref<number> instead of number (the actual type)

This is useful to use external use* functions: #485 (reply in thread)

[philippedasilva-orizone]

Any hint @posva where to look at exactly so that I don't get to understand the whole project but just focus on this part of the code? Or do you believe it'd have impacts on multiple parts?

[posva]

I think this should be a possible contribution, using a type UnwrapRef from vue or inspiring yourself from the typing of reactive should help. It should be a typescript only change