A helper function to properly set a date at midnight of the current browser's timezone.

newDateInCurrentTimezone.ts

/**
 * Since Javascript's Date object will always return the time at midnight GMT
 * but will then cast to the timezone on the client.
 * Example: if you give 1/1/2022 12:00AM, EST people will see 12/31/2021 6:00PM EST.
 * This function will account for the offset and return the correct time.
 * Example: if you give 1/1/2022 12:00AM, EST people will see 1/1/2022 12:00AM EST.
 * Taken from https://stackoverflow.com/a/39209842/864596
 *
 * @param date: the date to be converted
 * @returns the date in the current timezone with at the same Time
 */
const newDateInCurrentTimezone = (date: Date | string) => {
  const newDate = new Date(date);
  const userTimezoneOffset = newDate.getTimezoneOffset() * 60000;
  return new Date(newDate.getTime() + userTimezoneOffset);
};

export default newDateInCurrentTimezone;