Run results for: dayjs vs luxon vs js-joda vs date-fns (comparing)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36

Browser: Chrome 116

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Dayjs	1578341.0 Ops/sec
luxon	6067307.5 Ops/sec
js-joda	16074746.0 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/dayjs@1.11.9/dayjs.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/luxon@3.4.3/build/global/luxon.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/@js-joda/core@5.5.3/dist/js-joda.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/date-fns/1.9.0/date_fns.min.js"></script>

Script Preparation code:

var dayjsDate1 = dayjs('2022-09-01T00:00:00+09:00');
var dayjsDate2 = dayjs('2023-09-01T00:00:00+09:00');
var luxonDate1 = luxon.DateTime.fromISO("2022-09-01T00:00:00+09:00");
var luxonDate2 = luxon.DateTime.fromISO("2023-09-01T00:00:00+09:00");
var jsJodaDate1 = JSJoda.ZonedDateTime.parse('2022-09-01T00:00:00+09:00', JSJoda.DateTimeFormatter.ISO_OFFSET_DATE_TIME);
var jsJodaDate2 = JSJoda.ZonedDateTime.parse('2023-09-01T00:00:00+09:00', JSJoda.DateTimeFormatter.ISO_OFFSET_DATE_TIME);
var date1 = new Date('2022-09-01T00:00:00+09:00');
var date2 = new Date('2023-09-01T00:00:00+09:00');

Tests:

Dayjs
dayjsDate1.isBefore(dayjsDate2);
luxon
luxonDate1 < luxonDate2
js-joda
jsJodaDate1.isBefore(jsJodaDate2);
date-fns
dateFns.isBefore(date1, date2);

Run results for: dayjs vs luxon vs js-joda vs date-fns (comparing)

Dayjs

luxon

js-joda

date-fns