getTimeRemaining.ts

type TypeGetTimeRemaining = {
  total: number;
  days: number;
  hours: number;
  minutes: number;
  seconds: number;
};
function getTimeRemaining(endtime: string): TypeGetTimeRemaining {
  let time = Date.parse(endtime) - Date.parse(new Date().toDateString());
  
  const THOUSAND = 1000;
  const HOURS_IN_DAY = 24;
  const MINUTES_IN_HOUR = 60;
  const SECONDS_IN_MINUTE = MINUTES_IN_HOUR;

  let seconds = Math.floor(time / THOUSAND % SECONDS_IN_MINUTE);
  let minutes = Math.floor(
    time / THOUSAND / SECONDS_IN_MINUTE % MINUTES_IN_HOUR
  );
  let hours = Math.floor(
    time / (THOUSAND * SECONDS_IN_MINUTE * MINUTES_IN_HOUR) % HOURS_IN_DAY
  );
  let days = Math.floor(
    time / (THOUSAND * SECONDS_IN_MINUTE * MINUTES_IN_HOUR * HOURS_IN_DAY)
  );
  return {
    total: time,
    days: days,
    hours: hours,
    minutes: minutes,
    seconds: seconds
  };
}