WeekYear
WeekYear dodaje API .weekYear() do uzyskiwania roku tygodnia zgodnie z ustawieniami regionalnymi.
javascript
var weekYear = require('dayjs/plugin/weekYear'); // Wymaga wtyczki weekYear
// import weekYear from 'dayjs/plugin/weekYear' // ES 2015
var weekOfYear = require('dayjs/plugin/weekOfYear');
// import weekOfYear from 'dayjs/plugin/weekOfYear' // ES 2015
dayjs.extend(weekOfYear);
dayjs.extend(weekYear);
dayjs().weekYear();