import { toDate } from "./toDate.mjs"; /** * @name getISODay * @category Weekday Helpers * @summary Get the day of the ISO week of the given date. * * @description * Get the day of the ISO week of the given date, * which is 7 for Sunday, 1 for Monday etc. * * ISO week-numbering year: http://en.wikipedia.org/wiki/ISO_week_date * * @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc). * * @param date - The given date * * @returns The day of ISO week * * @example * // Which day of the ISO week is 26 February 2012? * const result = getISODay(new Date(2012, 1, 26)) * //=> 7 */ export function getISODay(date) { const _date = toDate(date); let day = _date.getDay(); if (day === 0) { day = 7; } return day; } // Fallback for modularized imports: export default getISODay;