Benchmark: Object.fromEntries vs lodash fromPairs vs Object.assign vs Object spread with custom func

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 addonDefinitions = { a: 1, b: 2, c: 3 }; var definitionsTupleArray = []; Object.entries(addonDefinitions).forEach(([definitionId, definition]) => { definitionsTupleArray.push([definitionId, definition]); }); var b = _.fromPairs(definitionsTupleArray);
Object.assign
var obj = {}; Object.assign(obj, { a: 1 }); Object.assign(obj, { b: 2 }); Object.assign(obj, { c: 3 });
Object spread
let obj = {}; obj = { ...obj, ...{ a: 1 }}; obj = { ...obj, ...{ b: 2 }}; obj = { ...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

Object.assign

19.6M/s

Object spread

14.8M/s

Object.fromEntries

9.0M/s

_.fromPairs

6.8M/s

View exact numbers

Object.fromEntries vs lodash fromPairs vs Object.assign vs Object spread with custom func (version: 1)