import { getISOWeek } from "https://deno.land/x/date_fns@v2.0.0-alpha.34/index.js";
Examples
// Which week of the ISO-week numbering year is 2 January 2005?
var result = getISOWeek(new Date(2005, 0, 2))
//=> 53
// Which week of the ISO-week numbering year is 2 January 2005? var result = getISOWeek(new Date(2005, 0, 2)) //=> 53