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: one year ago

lodash chunk

5K/s

native slice

5K/s

native reduce

815/s

View exact numbers

HTML Preparation code:

<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())

Tests:

native slice
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; }, []);
lodash chunk
_.chunk(test,80)