Run results for: Flatmaps with native (large array)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.16; rv:85.0) Gecko/20100101 Firefox/85.0

Browser: Firefox 85

Operating system: Mac OS X 10.16

Device Platform: Desktop

Date tested: 3 years ago

Script Preparation code:

var arr = Array(1000).fill().map(el => Array(10).fill(1));

Tests:

flatMap Concat
const flatMap = (array) => { return [].concat(...array) } flatMap(arr);
flatMap reduce
const flatMap = (array) => { return array.reduce((acc, val) => acc.concat(val)); } flatMap(arr);
flatMap native
const flatMap = (array) => { return array.flatMap(i => i); } flatMap(arr);