app/node_modules/date-fns/esm/getDay/index.js

import toDate from "../toDate/index.js";
import requiredArgs from "../_lib/requiredArgs/index.js";
/**
 * @name getDay
 * @category Weekday Helpers
 * @summary Get the day of the week of the given date.
 *
 * @description
 * Get the day of the week of the given date.
 *
 * @param {Date|Number} date - the given date
 * @returns {0|1|2|3|4|5|6} the day of week, 0 represents Sunday
 * @throws {TypeError} 1 argument required
 *
 * @example
 * // Which day of the week is 29 February 2012?
 * const result = getDay(new Date(2012, 1, 29))
 * //=> 3
 */
export default function getDay(dirtyDate) {
  requiredArgs(1, arguments);
  var date = toDate(dirtyDate);
  var day = date.getDay();
  return day;
}