getWeek
import { getWeek } from "https://esm.sh/v135/date-fns@3.6.0/index.d.mts";@example
// Which week of the local week numbering year is 2 January 2005 with default options?
const result = getWeek(new Date(2005, 0, 2))
//=> 2
@example
// Which week of the local week numbering year is 2 January 2005,
// if Monday is the first day of the week,
// and the first week of the year always contains 4 January?
const result = getWeek(new Date(2005, 0, 2), {
weekStartsOn: 1,
firstWeekContainsDate: 4
})
//=> 53
function getWeek<DateType extends Date>(date: DateType | number | string, options?: GetWeekOptions): number;