Benchmark: Object.fromEntries vs mapValues

HTML Preparation code:

<!--your preparation HTML code goes here-->
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.21/lodash.min.js'></script>

Script Preparation code:

var data = { ...Array.from(Array(10000).keys()) };

Tests:

fromEntries
Object.fromEntries( Object.entries(data).map( ([key, value]) => ([key, {...value, test: value + 1 }]) ) )
mapValues
_.mapValues(data, (value) => ({ ...value, test: value + 1 }))

Rendered benchmark preparation results:

Previous results

Test case name	Result
fromEntries
mapValues

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/135.0.0.0 Safari/537.36

Browser/OS: Chrome 135 on Mac OS X 10.15.7

mapValues

4K/s

fromEntries

2K/s

View exact numbers

Test name	Executions per second
✓ mapValues	3,718 Ops/sec
fromEntries	1,618 Ops/sec

Object.fromEntries vs mapValues (version: 1)