Run results for: Classnames vs CLSX vs fast-

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:106.0) Gecko/20100101 Firefox/106.0

Browser: Firefox 106

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
classnames string	2902630.5 Ops/sec
clsx string	6313313.5 Ops/sec
classnames object	2665690.0 Ops/sec
clsx object	3557924.2 Ops/sec
classnames array	1711824.9 Ops/sec
clsx array	3808581.0 Ops/sec
Fast-ClassNames string	2768156.2 Ops/sec
Fast-ClassNames object	2920690.8 Ops/sec
Fast-ClassNames array	2249122.0 Ops/sec

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/classnames/2.3.2/index.min.js'></script>
<script src='https://unpkg.com/clsx@1.2.1/dist/clsx.min.js'></script>
<script src="https://cdn.jsdelivr.net/npm/fast-classnames/umd.min.js"></script>

Script Preparation code:

var str = 'style';
var obj = {
 	 'style-2': true,
  	 'style-3': false,
 	 'style-4': true,
}
var arr = ['style-5', 'style-6']

Tests:

classnames string
let result = window.classNames(str, 'test classname', 'WORKS')
clsx string
let result = window.clsx(str, 'test classname', 'WORKS')
classnames object
let result = window.classNames(obj, {'test classname':false, 'WORKS':true})
clsx object
let result = window.clsx(obj, {'test classname':false, 'WORKS':true})
classnames array
let result = window.classNames(arr, ['test classname', ['WORKS']])
clsx array
let result = window.clsx(arr, ['test classname', ['WORKS']])
Fast-ClassNames string
let result = window.fastClassnames(str, 'test classname', 'WORKS')
Fast-ClassNames object
let result = window.fastClassnames(obj, {'test classname':false, 'WORKS':true})
Fast-ClassNames array
let result = window.fastClassnames(arr, ['test classname', ['WORKS']])

Run results for: Classnames vs CLSX vs fast-

Compare CLSX vs Classnames vs templateLiterals

classnames string

clsx string

classnames object

clsx object

classnames array

clsx array

Fast-ClassNames string

Fast-ClassNames object

Fast-ClassNames array