import {useState, useEffect} from 'react'; const isClient = typeof window === 'object'; const useLocalStorage = (key: string, initialValue?: T, raw?: boolean): [T, (value: T) => void] => { if (!isClient) { return [initialValue as T, () => {}]; } const [state, setState] = useState(() => { try { const localStorageValue = localStorage.getItem(key); if (typeof localStorageValue !== 'string') { localStorage.setItem(key, raw ? String(initialValue) : JSON.stringify(initialValue)); return initialValue; } else { return raw ? localStorageValue : JSON.parse(localStorageValue || 'null'); } } catch { // If user is in private mode or has storage restriction // localStorage can throw. JSON.parse and JSON.stringify // cat throw, too. return initialValue; } }); useEffect(() => { try { const serializedState = raw ? String(state) : JSON.stringify(state); localStorage.setItem(key, serializedState); } catch { // If user is in private mode or has storage restriction // localStorage can throw. Also JSON.stringify can throw. } }); return [state, setState]; }; export default useLocalStorage;