Are store reactive?

  const [params, setParams] = createStore<Params>(
    props.value ?? {
      data: [
        { points: 100, requirement: 10 },
        { points: 50, requirement: 5 },
        { points: 0, requirement: 0 },
      ],
    },
  );

  createEffect(() => {
    console.log(params.data.at(0));
  });