Run results for: lodash keyBy beforehand access vs lodash find vs js find

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36

Browser: Chrome 135

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

keyby done beforehand

119.8M/s

lodash find

2K/s

js find

1K/s

View exact numbers

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.21/lodash.min.js'></script>

Script Preparation code:

const array = _.shuffle([...Array.from({ length: 100000 }, () => ({ a: crypto.randomUUID() })), {a:'1'}]);
const a = _.keyBy(array, 'a')

Tests: