countdown.hook.tsx

const Freshers = () => {
  const { seconds, minutes, hours, days } = useCountdown(new Date(2019, 11, 6));


  return (
    <div>
        <div>{days}</div>
        <div>Days</div>

        <div>{hours}</div>
        <div>Hours</div>

        <div>{seconds}</div>
        <div>Seconds</div>
    </div>
  )
}

countdown.prop.tsx

<Countdown target={new Date(2019, 11, 6)} render={({ days, hours, seconds }) => (
    <div>
        <div>{days}</div>
        <div>Days</div>

        <div>{hours}</div>
        <div>Hours</div>

        <div>{seconds}</div>
        <div>Seconds</div>
    </div>
)} />