Run results for: test sort uniq2

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36

Browser: Chrome 119

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

nospread

140/s

new2

85/s

nodate

71/s

new

14/s

slow

2/s

View exact numbers

Test name	Executions per second
✓ nospread	140 Ops/sec
new2	85 Ops/sec
nodate	71 Ops/sec
new	14 Ops/sec
slow	2 Ops/sec

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/ramda/0.27.0/ramda.min.js"></script>

Script Preparation code:

var data = []

function getRandomDate() {
  const startMillis = new Date('2020-06-02T00:00:00.000Z').getTime();
  const endMillis = new Date().getTime();
  const randomMillis = startMillis + Math.random() * (endMillis - startMillis);
  const randomDate = new Date(randomMillis);

  return randomDate;
}

for (var i = 0; i < 14000; i++) {
     data.push({ customerId: `CTM-${i % 10}`, worklistId: `WL-${i % 100}`, createdDateTime: getRandomDate() });
}

Tests:

slow
var result = R.uniqBy( R.props(['worklistId', 'customerId']), [...data].sort( (a, b) => new Date(a.createdDateTime).getTime() - new Date(b.createdDateTime).getTime(), ), )
new
var result = R.uniqWith( (a, b) => a.customerId === b.customerId && a.worklistId === b.worklistId, [...data].sort( (a, b) => new Date(a.createdDateTime).getTime() - new Date(b.createdDateTime).getTime(), ), )
new2
var result = R.uniqWith( (a, b) => a.customerId === b.customerId && a.worklistId === b.worklistId, data.sort( (a, b) => a.createdDateTime - b.createdDateTime, ), )
nospread
var result = R.uniqWith( (a, b) => a.customerId === b.customerId && a.worklistId === b.worklistId, [...data].sort( (a, b) => a.createdDateTime - b.createdDateTime, ), )
nodate
var result = R.uniqWith( (a, b) => a.customerId === b.customerId && a.worklistId === b.worklistId, data.sort( (a, b) => new Date(a.createdDateTime).getTime() - new Date(b.createdDateTime).getTime(), ), )