import moment from "moment";
import TrackerByDate from "./traker_by_date/tabs";

export default function Calender() {
  const [value] = useState(new Date());
  const [show, setTracker] = useState(false);

  const [dateState, setDateState] = useState(new Date());
  const changeDate = (e) => {
    setDateState(e);
  };
  var pikerdate = moment(dateState).format("YYYY-MM-DD");
  function clickTracker(e) {
    setTracker(!show);
  }

  return (
    <>
      {show ? <TrackerByDate dataFromParent={pikerdate} /> : null}
      <div style={{ width: "260px" }} className="res-calendar">
        <Calendar
          className={["c1", "c2"]}
          onChange={changeDate}
          onClickDay={clickTracker}
          value={dateState}
        />
      </div>
    </>
  );

I am trying to pass 'pikerdate' to a js file called diet. callander.js and diet.js are not parent or child

I want to get a date in diet.js when the date is clicked on callender.js