Run results for: Lodash reduce vs transform vs Native reduce on object (Object without prototype)

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 YaBrowser/24.1.0.0 Safari/537.36

Browser: Yandex Browser 24

Operating system: Linux

Device Platform: Desktop

Date tested: 8 months ago

Test name	Executions per second
Lodash reduce	1014323.4 Ops/sec
Native	586052.2 Ops/sec
Lodash transform	1024685.1 Ops/sec

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.min.js"></script>

Script Preparation code:

window.obj = Object.create(null);

for (var i = 0, len = 10; i < len; i++) {
  var arr = []
  obj['key' + i] = arr
  for (var n = 0, len = 10; n < len; n++) {
    arr.push({ ['key' + n]: n });
  }
}

Tests:

Lodash reduce
_.reduce(obj, (acc, val, key) => { acc[key] = val.map(d => ({ label: key, value: val })); return acc; }, Object.create(null))
Native
Object.entries(obj).reduce((acc, [key, val]) => { acc[key] = val.map(d => ({ label: key, value: val })); return acc; }, Object.create(null))
Lodash transform
_.transform(obj, (acc, val, key) => { acc[key] = val.map(d => ({ label: key, value: val })); }, Object.create(null))

Run results for: Lodash reduce vs transform vs Native reduce on object (Object without prototype)

Lodash reduce

Native

Lodash transform