Run results for: native-slice-vs-chunk-real-map

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.64 Safari/537.36

Browser: Chrome 101

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Native slice	12171.9 Ops/sec
lodash chunk	2834.2 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 rq = {
  files: Array.from({ length: 100000 }, () => Math.random()),
  foo: 'foo',
  bar: 'bar',
}

var chunk = function(arr, chunkSize) {
    const res = [];
    for (let i = 0; i < arr.length; i += chunkSize) {
        const chunk = arr.slice(i, i + chunkSize);
        res.push(chunk);
    }
    return res;
}

Tests:

Native slice
chunk(rq.files,5000).map(files => ({...rq, files}))
lodash chunk
_.chunk(rq.files,5000).map(files => ({...rq, files}))

Run results for: native-slice-vs-chunk-real-map

Native slice

lodash chunk