Function getRelativeTimeUnit

src/duration.ts:221–233

(
  duration: Duration,
  opts?: Partial<RoundingOpts>,
)

}

export function getRelativeTimeUnit(
  duration: Duration,
  opts?: Partial<RoundingOpts>,
): [number, Intl.RelativeTimeFormatUnit] {
  const rounded = roundToSingleUnit(duration, opts)
  if (rounded.blank) return [0, 'second']
  for (const unit of unitNames) {
    if (unit === 'millisecond') continue
    const val = rounded[`${unit}s` as keyof Duration] as number
    if (val) return [val, unit]
  }
  return [0, 'second']
}