Run results for: luxon vs dayjs vs date-fns vs ff native temporal vs moment (formatting)

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:139.0) Gecko/20100101 Firefox/139.0

Browser: Firefox 139

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

dayjs v1.11.13

1.0M/s

luxon v3.5.0

343K/s

moment.js v2.29.1

277K/s

Native Temporal (Firefox 139)

20K/s

date-fns v4.1.0

20K/s

View exact numbers

Test name	Executions per second
✓ dayjs v1.11.13	1,034,707 Ops/sec
luxon v3.5.0	342,856 Ops/sec
moment.js v2.29.1	277,101 Ops/sec
Native Temporal (Firefox 139)	20,243 Ops/sec
date-fns v4.1.0	19,917 Ops/sec

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/luxon/3.5.0/luxon.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/dayjs/1.11.13/dayjs.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/date-fns/4.1.0/cdn.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.1/moment.min.js"></script>

Script Preparation code:

window.timestamp = 1735660089
window.intlFormat = {
  year: "numeric",
  month: "2-digit",
  day: "2-digit",
  hour: "numeric",
  minute: "numeric",
  hour12: true,
}

Tests: