Function compareMonth

src/calendar/util.js:24–43

(date1, date2)

}

export function compareMonth(date1, date2) {
  if (!(date1 instanceof Date)) {
    date1 = getDate(date1);
  }

  if (!(date2 instanceof Date)) {
    date2 = getDate(date2);
  }

  const year1 = date1.getFullYear();
  const year2 = date2.getFullYear();
  const month1 = date1.getMonth();
  const month2 = date2.getMonth();

  if (year1 === year2) {
    return month1 === month2 ? 0 : month1 > month2 ? 1 : -1;
  }

  return year1 > year2 ? 1 : -1;
}

export function compareDay(date1, date2) {
  if (!(date1 instanceof Date)) {