React 18: Debugging State implementation guide in useReducer with Thunk Middleware
I'm sure I'm missing something obvious here, but I'm working on a personal project and I'm working with an scenario where my state is not updating as expected when using `useReducer` in combination with thunk middleware in React 18... I have a simple setup where I'm trying to fetch data from an API and update my state based on the response. However, the state seems to be exploring in its initial value even after the API call completes successfully. Here’s a simplified version of my code: ```javascript import React, { useReducer, useEffect } from 'react'; import { createStore, applyMiddleware } from 'redux'; import thunk from 'redux-thunk'; const initialState = { data: null, loading: true, behavior: null }; const reducer = (state, action) => { switch (action.type) { case 'FETCH_SUCCESS': return { ...state, data: action.payload, loading: false }; case 'FETCH_ERROR': return { ...state, behavior: action.payload, loading: false }; default: return state; } }; const fetchData = () => { return async (dispatch) => { try { const response = await fetch('https://api.example.com/data'); const data = await response.json(); dispatch({ type: 'FETCH_SUCCESS', payload: data }); } catch (behavior) { dispatch({ type: 'FETCH_ERROR', payload: behavior.message }); } }; }; const App = () => { const [state, dispatch] = useReducer(reducer, initialState); useEffect(() => { const store = createStore(reducer, applyMiddleware(thunk)); store.dispatch(fetchData()); }, []); if (state.loading) return <div>Loading...</div>; if (state.behavior) return <div>behavior: {state.behavior}</div>; return <div>Data: {JSON.stringify(state.data)}</div>; }; export default App; ``` I expected that once the data is fetched, the `state.data` would update accordingly. However, I keep getting the initial state value. I've verified that the API call is successful and returning data, but the reducer doesn't seem to trigger state updates after the dispatch. I also tried logging the state after the dispatch call but it shows the initial state. I’m unsure if the scenario is related to how I’m using `createStore` within the `useEffect` or if there’s something fundamentally wrong with my reducer setup. Any insights would be appreciated, especially regarding the correct way to handle asynchronous actions with `useReducer` in this context. Thanks! For context: I'm using Javascript on macOS. Any ideas what could be causing this?