Run results for: dayjs vs Date

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser: Chrome 137

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Dayjs	5254.4 Ops/sec
luxon	33392.4 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/dayjs@1.11.9/dayjs.min.js"></script>

Script Preparation code:

const dates = Array.from({ length: 300 }, (_, i) => {
  const date = new Date();
  date.setDate(date.getDate() + i);
  return date.toISOString().split('T')[0];
});

Tests:

Dayjs
dates.sort((a,b) => { const dateA = dayjs(a); const dateB = dayjs(b); return dateB.isAfter(dateA) ? 1 : -1; })
luxon
dates.sort((a,b) => { const dateA = new Date(a).getTime(); const dateB = new Date(b).getTime(); return dateB - dateA; })

Run results for: dayjs vs Date

Dayjs

luxon