Function getWeeksInMonth

packages/@internationalized/date/src/queries.ts:341–348

(
  date: DateValue,
  locale: string,
  firstDayOfWeek?: DayOfWeek
)

/** Returns the number of weeks in the given month and locale. */
export function getWeeksInMonth(
  date: DateValue,
  locale: string,
  firstDayOfWeek?: DayOfWeek
): number {
  let days = date.calendar.getDaysInMonth(date);
  return Math.ceil((getDayOfWeek(startOfMonth(date), locale, firstDayOfWeek) + days) / 7);
}

/** Returns the lesser of the two provider dates. */
export function minDate<A extends DateValue, B extends DateValue>(