import toDate from "../../toDate/index.js"; import startOfUTCWeek from "../startOfUTCWeek/index.js"; import startOfUTCWeekYear from "../startOfUTCWeekYear/index.js"; import requiredArgs from "../requiredArgs/index.js"; var MILLISECONDS_IN_WEEK = 604800000; export default function getUTCWeek(dirtyDate, options) { requiredArgs(1, arguments); var date = toDate(dirtyDate); var diff = startOfUTCWeek(date, options).getTime() - startOfUTCWeekYear(date, options).getTime(); // Round the number of days to the nearest integer // because the number of milliseconds in a week is not constant // (e.g. it's different in the week of the daylight saving time clock shift) return Math.round(diff / MILLISECONDS_IN_WEEK) + 1; }