Run results for: Array immutable union: lodash union vs flatten and creating a new set

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36

Browser: Chrome 118

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
lodash union	742543.5 Ops/sec
Set from flatten	604264.6 Ops/sec

HTML Preparation code:

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

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

Script Preparation code:

var list = [[ 'a', 'b', 'c' ], [ 'b', 'd', 'a', 'e', 'f' ]];

 
var list = [[ 'a', 'b', 'c' ], [ 'b', 'd', 'a', 'e', 'f' ]];

Tests:

lodash union
var c = _.union(...list);
var c = _.union(...list);
Set from flatten
var c = new Set(_.flatten(list))
var c = new Set(_.flatten(list))