Function startOfQuarter

pkgs/core/src/startOfQuarter/index.ts:33–46

(
  date: DateArg<DateType>,
  options?: StartOfQuarterOptions<ResultDate> | undefined,
)

 * //=> Tue Jul 01 2014 00:00:00
 */
export function startOfQuarter<
  DateType extends Date,
  ResultDate extends Date = DateType,
>(
  date: DateArg<DateType>,
  options?: StartOfQuarterOptions<ResultDate> | undefined,
): ResultDate {
  const _date = toDate(date, options?.in);
  const currentMonth = _date.getMonth();
  const month = currentMonth - (currentMonth % 3);
  _date.setMonth(month, 1);
  _date.setHours(0, 0, 0, 0);
  return _date;
}