Run results for: Modern Date Libraries

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.102 Safari/537.36

Browser: Chrome 85

Operating system: Mac OS X 10.15.6

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Luxon	46542.3 Ops/sec
Date-fns	49592.2 Ops/sec
Dayjs	44571.3 Ops/sec

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/date-fns/2.0.0-alpha0/date_fns.min.js" integrity="sha512-0kon+2zxkK5yhflwFqaTaIhLVDKGVH0YH/jm8P8Bab/4EOgC/n7gWyy7WE4EXrfPOVDeNdaebiAng0nsfeFd9A==" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/luxon@1.25.0/build/global/luxon.min.js"></script>
<script src="https://unpkg.com/dayjs@1.8.21/dayjs.min.js"></script>

Script Preparation code:

window.__date__ = new Date();
window.__expected__ = '2000/01/06';

Tests:

Luxon
var actual = luxon.DateTime.fromJSDate(__date__).toFormat('yyyy/MM/dd'); console.assert(actual === __expected__);
Date-fns
var actual = dateFns.format(__date__, 'YYYY/MM/DD'); console.assert(actual === __expected__);
Dayjs
var actual = dayjs(__date__).format('YYYY/MM/DD'); console.assert(actual === __expected__);

Run results for: Modern Date Libraries

Luxon

Date-fns

Dayjs