Run results for: Dayjs Date-fns format and add day comparison

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36 Edg/138.0.0.0

Browser: Chrome 138

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Date-fns

362K/s

Dayjs

331K/s

View exact numbers

Test name	Executions per second
✓ Date-fns	362,382 Ops/sec
Dayjs	331,173 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 Preparation code:

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

Tests:

Date-fns
window.datefns.parseISO(window.ds); window.datefns.format(new Date(), "mm-dd-yyyy"); window.datefns.add(new Date(), { weeks: 1 });
Dayjs
dayjs(ds) dayjs().format("MM-DD-YYYY"); dayjs().add(1, 'days');