Run results for: Classnames vs CLSX vs [].filter(Boolean).join(" ")

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.7 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 17

Operating system: iOS 17.7

Device Platform: Mobile

Date tested: one year ago

Benchmark engine: Benchmark.js

classnames

4.3M/s

clsx

4.1M/s

Entries, filter, map, join

3.8M/s

View exact numbers

Test name	Executions per second
✓ classnames	4,264,210 Ops/sec
clsx	4,145,277 Ops/sec
Entries, filter, map, join	3,786,452 Ops/sec

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/classnames/2.2.6/index.min.js'></script>
<script src='https://unpkg.com/clsx@1.1.1/dist/clsx.min.js'></script>

Script Preparation code:

var neco = [true, false, undefined, "lorem-ipsum"];

Tests:

classnames
let result = window.classNames("dolor-sit-amet", ...neco, undefined)
clsx
let result = window.clsx("dolor-sit-amet", ...neco, undefined)
Entries, filter, map, join
function cx(...input) { return input.filter(Boolean).join(" "); } let result = cx("dolor-sit-amet", ...neco, undefined)

Run results for: Classnames vs CLSX vs [].filter(Boolean).join(" ")

Compare CLSX vs Classnames vs an simpliest implementation of creating a template string

classnames

clsx

Entries, filter, map, join