Function negateDuration

src/relative-time-element.ts:58–69

(duration: Duration)

}

function negateDuration(duration: Duration): Duration {
  return new Duration(
    -duration.years,
    -duration.months,
    -duration.weeks,
    -duration.days,
    -duration.hours,
    -duration.minutes,
    -duration.seconds,
    -duration.milliseconds,
  )
}

function getExplicitThreshold(el: RelativeTimeElement): string | null {
  const threshold = el.getAttribute('threshold')