public static msToTime (ms: number): string {
  const date = new Date(ms)
  const h = date.getHours()
  const m = date.getMinutes()
  const s = date.getSeconds()

  return `${h < 10 ? `0${h}` : h}:${m < 10 ? `0${m}` : m}:${s < 10 ? `0${s}` : s}`
}