Hello, how can i tweak this ?

const [state1, setState1] = useState({
    data: ["a", "b", "c", "d"],
    title: "albhabets"
  });
  const state2 = [{ data: ["e", "f"], title: "albhabets" }];

  const merge = () => {
    setState1([...state1.data, ...state2.data]);
    console.log(state1);
  };

https://codesandbox.io/s/busy-currying-ju23ke?file=/src/App.js:103-367