Run results for: Moment Dayjs Date-fns format benchmark

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_6_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/139.0.7258.76 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 139

Operating system: iOS 18.6.0

Device Platform: Mobile

Date tested: one year ago

Dayjs

574K/s

Date-fns

379K/s

Momentjs

234K/s

View exact numbers

Test name	Executions per second
✓ Dayjs	573,714 Ops/sec
Date-fns	378,768 Ops/sec
Momentjs	233,732 Ops/sec

HTML Preparation code:

<script src="https://unpkg.com/dayjs@1.8.21/dayjs.min.js"></script>
<script src="https://igor.moomers.org/random/datefns.js"></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.0/moment.min.js'></script>

Script Preparation code:

window.ds = "2020-02-19T00:51:53.623839+00:00";

Tests:

Date-fns
window.datefns.format(window.datefns.parseISO(window.ds), "yyyy-mm-dd")
Momentjs
moment(ds).format("YYYY-MM-DD")
Dayjs
dayjs(ds).format("YYYY-MM-DD")