/* * SonarQube * Copyright (C) 2009-2024 SonarSource SA * mailto:info AT sonarsource DOT com * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 3 of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ import React from 'react'; import { get, save } from '../helpers/storage'; export default function useLocalStorage(key: string, initialValue?: T) { const lsValue = React.useCallback(() => { const v = get(key); try { return JSON.parse(v as string); } catch { return v; } }, [key]); const [storedValue, setStoredValue] = React.useState(lsValue() ?? initialValue); const changeValue = React.useCallback( (value: T) => { save(key, JSON.stringify(value)); setStoredValue(lsValue()); }, [key, lsValue], ); React.useEffect(() => { setStoredValue(lsValue() ?? initialValue); }, [lsValue, initialValue]); return [storedValue, changeValue]; }