React 18: Strange Behavior When Using useReducer for Complex Nested State with Multiple Dispatch Calls
Can someone help me understand This might be a silly question, but I'm trying to figure out I'm experiencing unexpected behavior when using `useReducer` to manage complex nested state in my React 18 application. I have a reducer that handles a form with multiple sections, and I'm trying to update the state based on user input. However, when I dispatch multiple actions in quick succession, the state doesn't seem to reflect the correct values. Here's a simplified version of my reducer: ```javascript const initialState = { personalInfo: { name: '', email: '' }, preferences: { newsletter: false, notifications: false } }; const reducer = (state, action) => { switch (action.type) { case 'SET_NAME': return { ...state, personalInfo: { ...state.personalInfo, name: action.payload } }; case 'SET_EMAIL': return { ...state, personalInfo: { ...state.personalInfo, email: action.payload } }; case 'TOGGLE_NEWSLETTER': return { ...state, preferences: { ...state.preferences, newsletter: !state.preferences.newsletter } }; default: return state; } }; ``` In my component, I'm dispatching these actions based on user input: ```javascript const [state, dispatch] = useReducer(reducer, initialState); const handleNameChange = (e) => { dispatch({ type: 'SET_NAME', payload: e.target.value }); }; const handleEmailChange = (e) => { dispatch({ type: 'SET_EMAIL', payload: e.target.value }); }; const toggleNewsletter = () => { dispatch({ type: 'TOGGLE_NEWSLETTER' }); }; ``` The scenario arises when I try to update both the name and email fields in rapid succession. I notice that the `personalInfo` state doesn't always reflect the latest updates correctly. Sometimes, it seems to revert to the previous state unexpectedly. I've tried wrapping the dispatch calls in a `useCallback`, but the scenario continues. Additionally, I'm not seeing any console errors or warnings that could provide insight into what's going wrong. Is there a best practice for managing state updates in `useReducer` when dealing with rapid inputs? Should I be handling these updates in a different way to ensure the state reflects the latest values correctly? This is part of a larger application I'm building. Thanks in advance! This is part of a larger CLI tool I'm building. What's the best practice here? I recently upgraded to Javascript stable. Could someone point me to the right documentation? Has anyone else encountered this?