Function alignEnd

packages/react-stately/src/calendar/utils.ts:74–95

(
  date: CalendarDate,
  duration: DateDuration,
  locale: string,
  minValue?: DateValue | null,
  maxValue?: DateValue | null
)

}

export function alignEnd(
  date: CalendarDate,
  duration: DateDuration,
  locale: string,
  minValue?: DateValue | null,
  maxValue?: DateValue | null
): CalendarDate {
  let d = {...duration};
  // subtract 1 from the smallest unit
  if (d.days) {
    d.days--;
  } else if (d.weeks) {
    d.weeks--;
  } else if (d.months) {
    d.months--;
  } else if (d.years) {
    d.years--;
  }

  let aligned = alignStart(date, duration, locale).subtract(d);
  return constrainStart(date, aligned, duration, locale, minValue, maxValue);
}

export function constrainStart(
  date: CalendarDate,