Difficulty managing local storage state synchronization in a React app
I can't seem to get Quick question that's been bugging me - I'm collaborating on a project where I'm sure I'm missing something obvious here, but I am building a React application where I need to synchronize a piece of state with the browser's local storage..... The state is an object containing user preferences, and I want it to be updated in local storage every time the user makes a change. However, I am encountering issues where the local storage does not seem to update correctly, or it sometimes reads stale data when the component re-renders. Here's what I have tried: I set up an effect to synchronize the state with local storage: ```javascript import React, { useState, useEffect } from 'react'; const UserPreferences = () => { const [preferences, setPreferences] = useState( JSON.parse(localStorage.getItem('userPreferences')) || {} ); useEffect(() => { localStorage.setItem('userPreferences', JSON.stringify(preferences)); }, [preferences]); const updatePreference = (key, value) => { setPreferences((prev) => ({ ...prev, [key]: value })); }; return ( <div> <button onClick={() => updatePreference('theme', 'dark')}>Set Dark Theme</button> </div> ); }; ``` However, I noticed that sometimes the local storage doesn't reflect the changes made in the state immediately. For example, if I update the theme and then check local storage right after, it still shows the previous value. Additionally, when I reload the page, the state sometimes initializes with an incorrect value from local storage that doesn't match the latest update. I have verified that the `updatePreference` function is being called and that `preferences` is updating correctly, but the local storage syncing seems off. Am I missing something regarding the timing of updates or the way React batches state updates? Any insights would be appreciated! This is part of a larger API I'm building. Has anyone else encountered this? My team is using Javascript for this REST API. What's the correct way to implement this?