Run results for: Lodash partition VS native reduce

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.6 Safari/605.1.15

Browser: Safari 16

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Lodash

251K/s

Native reduce

2K/s

View exact numbers

Test name	Executions per second
✓ Lodash	251,181 Ops/sec
Native reduce	1,671 Ops/sec

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var arr = [];

for (i = 0; i < 1000; i++) {
  arr[i] = i;
}

Tests:

Lodash
var [met, rest] = _.partition(arr, function(i) { return i % 2 === 0 });
Native reduce
var [met, rest] = arr.reduce(function([p1, p2], i) { return i % 2 === 0 ? [[...p1, i], p2] : [p1, [...p2, i]] }, [[], []])