単一の情報源ではない
tsxconst [todos, setTodos] = useState<Todo[]>([]); const [completedTodos, setCompletedTodos] = useState<Todo[]>([]);
const [todos, setTodos] = useState<Todo[]>([]); const [completedTodos, setCompletedTodos] = useState<Todo[]>([]);
Bad Habits of Mid-Level React Developers - DEV Community 👩💻👨💻