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