Run results for: native slice vs native reduce vs lodash chunk

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 3 months ago

Test name	Executions per second
native slice	10737.5 Ops/sec
native reduce	414.4 Ops/sec
lodash chunk	2973.0 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.min.js'></script>

AخA
 
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.min.js'></script>

Script Preparation code:

var test = Array.from({
    length: 100000
}, () => Math.random())

 
var test = Array.from({    length: 100000}, () => Math.random())

Tests:

native slice

const chunkSize = 80;
const chunks = [];

for (let i = 0; i <= test.length; i += chunkSize) {
  chunks.push(test.slice(i, i + chunkSize));
}

​x
 
const chunkSize = 80;const chunks = [];​for (let i = 0; i <= test.length; i += chunkSize) {  chunks.push(test.slice(i, i + chunkSize));}

native reduce

const chunkSize = 80;
test.reduce((accu, element, idx) => {
  if (idx % chunkSize === 0) {
    accu.push([]);
  }
  const chunk = accu[accu.length - 1];

  chunk.push(element);
  return accu;
}, []);

 
const chunkSize = 80;test.reduce((accu, element, idx) => {  if (idx % chunkSize === 0) {    accu.push([]);  }  const chunk = accu[accu.length - 1];​  chunk.push(element);  return accu;}, []);

lodash chunk
_.chunk(test,80)
_.chunk(test,80)

Run results for: native slice vs native reduce vs lodash chunk

native slice vs lodash chunk

native slice

native reduce

lodash chunk