ReactJS - Unexpected re-renders with context provider and useReducer implementation guide state correctly
After trying multiple solutions online, I still can't figure this out. I'm working with an scenario with my React application where using a context provider with `useReducer` seems to cause unexpected re-renders. I have a setup where I manage global state using context, but after dispatching an action, the components that consume this context are re-rendering more than I anticipated. Here's a simplified version of my code: ```javascript import React, { createContext, useReducer, useContext } from 'react'; const initialState = { count: 0 }; const MyContext = createContext(); const reducer = (state, action) => { switch (action.type) { case 'increment': return { ...state, count: state.count + 1 }; case 'decrement': return { ...state, count: state.count - 1 }; default: return state; } }; export const MyProvider = ({ children }) => { const [state, dispatch] = useReducer(reducer, initialState); return <MyContext.Provider value={{ state, dispatch }}>{children}</MyContext.Provider>; }; export const useMyContext = () => useContext(MyContext); ``` In one of my child components, I’m using the context like this: ```javascript import React from 'react'; import { useMyContext } from './MyProvider'; const Counter = () => { const { state, dispatch } = useMyContext(); return ( <div> <p>Count: {state.count}</p> <button onClick={() => dispatch({ type: 'increment' })}>Increment</button> <button onClick={() => dispatch({ type: 'decrement' })}>Decrement</button> </div> ); }; export default Counter; ``` The question occurs when I perform the actions; I notice that the `Counter` component re-renders every time I dispatch an action, even if the state didn't change. This leads to performance optimization, especially when I have multiple components consuming the same context. I’ve tried using `React.memo` on the `Counter` component to prevent unnecessary re-renders, but that didn’t help. I also checked that my `reducer` is correctly returning new state objects, and I verified that the state isn't mutating unexpectedly. I'm using React version 17.0.2 and I've ensured that the context value is properly memoized. However, the unexpected re-renders continue. Can someone guide to identify what I might be missing or provide insights into why this behavior is occurring? For context: I'm using Javascript on Ubuntu.