Function isEqualYear

packages/@internationalized/date/src/queries.ts:58–60

(a: DateValue, b: DateValue)

/** Returns whether the given dates occur in the same year, and are of the same calendar system. */
export function isEqualYear(a: DateValue, b: DateValue): boolean {
  return isEqualCalendar(a.calendar, b.calendar) && isSameYear(a, b);
}

/** Returns whether two calendars are the same. */
export function isEqualCalendar(a: Calendar, b: Calendar): boolean {