Benchmark: Object.fromEntries vs lodash fromPairs vs Object.assign

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Tests:

Object.fromEntries
var a = [['a', 1], ['b', 2], ['c', 3]]; var b = Object.fromEntries(a);
_.fromPairs
var a = [['a', 1], ['b', 2], ['c', 3]]; var b = _.fromPairs(a);
Object.assign
var obj = {}; Object.assign(obj, { a: 1 }); Object.assign(obj, { b: 2 }); Object.assign(obj, { c: 3 });

Rendered benchmark preparation results:

Previous results

Latest run results:

Run details: (Test run date: one year ago)

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/OS: Chrome 131 on Mac OS X 10.15.7

_.fromPairs

28.1M/s

Object.assign

19.6M/s

Object.fromEntries

9.0M/s

View exact numbers

Object.fromEntries vs lodash fromPairs vs Object.assign (version: 1)