timezone.js

const changeTimeZone = (date: Date, timeZone: string) =>
  new Date(
    date.getTime() -
      (date.getTime() -
        new Date(date.toLocaleString("en-US", { timeZone })).getTime())
  );

const dateTimeLocalValue = (date: Date) => {
  const pad = (value: number) => value.toString().padStart(2, "0");
  return (
    date.getFullYear() +
    "-" +
    pad(date.getMonth() + 1) +
    "-" +
    pad(date.getDate()) +
    "T" +
    pad(date.getHours()) +
    ":" +
    pad(date.getMinutes())
  );
};