Run results for: this is a testd

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36 Edg/132.0.0.0

Browser: Chrome 132

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

js native

6.9M/s

luxon

196K/s

View exact numbers

Test name	Executions per second
✓ js native	6,888,188 Ops/sec
luxon	195,773 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/luxon@1.26.0/build/global/luxon.min.js"></script>

Script Preparation code:

const TIME_ZONE = "America/New_York";
const ms = 1789465498465;

function getFormattedDateTime(ms = undefined) {
  const now = new Date(ms);

  // Extract components
  const year = now.getFullYear();
  const month = String(now.getMonth() + 1).padStart(2, "0");
  const day = String(now.getDate()).padStart(2, "0");
  const hours = String(now.getHours()).padStart(2, "0");
  const minutes = String(now.getMinutes()).padStart(2, "0");
  const seconds = String(now.getSeconds()).padStart(2, "0");

  // Milliseconds (3-digit precision)
  const milliseconds = String(now.getMilliseconds()).padStart(3, "0");

  return `${year}-${month}-${day} ${hours}:${minutes}:${seconds}.${milliseconds}`;
}

Tests:

luxon
const minuteStart = luxon.DateTime.fromMillis(ms, { zone: TIME_ZONE }).toSQL({ includeOffset: false });
js native
const minuteStart = getFormattedDateTime(ms);