analytics/assets/js/dashboard/number-formatter.js

const THOUSAND = 1000
const HUNDRED_THOUSAND = 100000
const MILLION = 1000000
const HUNDRED_MILLION = 100000000

export default function numberFormatter(num) {
  if (num >= THOUSAND && num < MILLION) {
    const thousands = num / THOUSAND
    if (thousands === Math.floor(thousands) || num >= HUNDRED_THOUSAND) {
      return Math.floor(thousands) + 'k'
    } else {
      return (Math.floor(thousands * 10) / 10) + 'k'
    }
  } else if (num >= MILLION && num < HUNDRED_MILLION) {
    const millions = num / MILLION
    if (millions === Math.floor(millions)) {
      return Math.floor(millions) + 'M'
    } else {
      return (Math.floor(millions * 10) / 10) + 'M'
    }
  } else {
    return num
  }
}

function pad(num, size) {
  return ('000' + num).slice(size * -1);
}

export function durationFormatter(duration) {
  const hours = Math.floor(duration / 60 / 60)
  const minutes = Math.floor(duration / 60) % 60
  const seconds = Math.floor(duration - (minutes * 60) - (hours * 60 * 60))
  if (hours > 0) {
    return `${hours}h ${minutes}m ${seconds}s`
  } else if (minutes > 0) {
    return `${minutes}m ${pad(seconds, 2)}s`
  } else {
    return `${seconds}s`
  }
}