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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36

Browser: Chrome 129

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

clsx

1.5M/s

classnames

1.2M/s

Entries, filter, map, join

1.1M/s

View exact numbers

Test name	Executions per second
✓ clsx	1,522,596 Ops/sec
classnames	1,177,502 Ops/sec
Entries, filter, map, join	1,083,949 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