Get nearest period (with moment.js)

gistfile1.txt

function nearestMinutes(interval, someMoment) {
  const roundedMinutes = Math.round(someMoment.clone().minute() / interval) * interval;
  return someMoment.clone().minute(roundedMinutes).second(0);
}

function nearestPastMinutes(interval, someMoment) {
  const roundedMinutes = Math.floor(someMoment.minute() / interval) * interval;
  return someMoment.clone().minute(roundedMinutes).second(0);
}

function nearestFutureMinutes(interval, someMoment) {
  const roundedMinutes = Math.ceil(someMoment.minute() / interval) * interval;
  return someMoment.clone().minute(roundedMinutes).second(0);
}


const now = moment();
const nearest5min = nearestMinutes(5, now);
const nearest15min = nearestMinutes(15, now);
const nearest30min = nearestMinutes(30, now);
const nearestFuture5min = nearestFutureMinutes(5, now);
const nearestPast5min = nearestPastMinutes(5, now);