import { Dayjs } from 'dayjs';

/**
 * see https://github.com/iamkun/dayjs/blob/305f54099172ada45d10ba4c9bb5ec95e2a9d441/src/plugin/isoWeek/index.js#L37
 */
export function isoWeekday(day: Dayjs): number {
  return day.day() || 7;
}