You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
26 lines
1.1 KiB
26 lines
1.1 KiB
import toDate from '../../toDate/index.js';
|
|
import startOfUTCISOWeek from '../startOfUTCISOWeek/index.js';
|
|
import requiredArgs from '../requiredArgs/index.js'; // This function will be a part of public API when UTC function will be implemented.
|
|
// See issue: https://github.com/date-fns/date-fns/issues/376
|
|
|
|
export default function getUTCISOWeekYear(dirtyDate) {
|
|
requiredArgs(1, arguments);
|
|
var date = toDate(dirtyDate);
|
|
var year = date.getUTCFullYear();
|
|
var fourthOfJanuaryOfNextYear = new Date(0);
|
|
fourthOfJanuaryOfNextYear.setUTCFullYear(year + 1, 0, 4);
|
|
fourthOfJanuaryOfNextYear.setUTCHours(0, 0, 0, 0);
|
|
var startOfNextYear = startOfUTCISOWeek(fourthOfJanuaryOfNextYear);
|
|
var fourthOfJanuaryOfThisYear = new Date(0);
|
|
fourthOfJanuaryOfThisYear.setUTCFullYear(year, 0, 4);
|
|
fourthOfJanuaryOfThisYear.setUTCHours(0, 0, 0, 0);
|
|
var startOfThisYear = startOfUTCISOWeek(fourthOfJanuaryOfThisYear);
|
|
|
|
if (date.getTime() >= startOfNextYear.getTime()) {
|
|
return year + 1;
|
|
} else if (date.getTime() >= startOfThisYear.getTime()) {
|
|
return year;
|
|
} else {
|
|
return year - 1;
|
|
}
|
|
} |