Run results for: Date JS VS MomentJS VS Date-Fns - isValid

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: 9 months ago

Test name	Executions per second
Date JS	872294.1 Ops/sec
MomentJS	115006.2 Ops/sec
Date-Fns	344609.3 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/moment@2.29.4/moment.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/date-fns/cdn.min.js"></script>

Script Preparation code:

const isoDateFormatRegExp = /^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d{3}Z$/;

Tests:

Date JS
const dateString = new Date().toISOString(); let isValid; if (!isoDateFormatRegExp.test(dateString)) { isValid = false; } isValid = !isNaN(new Date(dateString).getTime());
MomentJS
const isValid = moment(new Date().toISOString(), 'YYYY-MM-DDTHH:mm:ss.SSSZ', true).isValid();
Date-Fns
const dateString = new Date().toISOString(); const isValid = dateFns.isValid(dateFns.parseISO(dateString));