Run results for: classcat, clsx, obj-str, vanilla, merge-class-names

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 15_2_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.2 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 15

Operating system: iOS 15.2.1

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
classcat(arr)	1301120.0 Ops/sec
classcat(obj)	1969741.0 Ops/sec
clsx(arr)	1666188.0 Ops/sec
clsx(obj)	2048807.0 Ops/sec
objstr(obj)	2002987.0 Ops/sec
arr.filter(Boolean).join(" ")	1541669.0 Ops/sec
merge-class-names(arr)	887899.7 Ops/sec
merge-class-names(obj)	1278299.0 Ops/sec

HTML Preparation code:

<script type="module">
    import classcat from "https://unpkg.com/classcat?module"
    window.classcat = classcat
</script>
<script type="module">
    import objstr from "https://unpkg.com/obj-str?module"
    window.objstr = objstr
</script>
<script type="module"> 
	import mergeClassNames from "https://unpkg.com/merge-class-names?module"
	window.mcn = mergeClassNames
</script>
<script src='https://unpkg.com/clsx@latest/dist/clsx.min.js'></script>

Script Preparation code:

var obj = {
    one: true,
    abcd: Math.random() <= 0.5,
    efghijkl: Math.random() <= 0.5,
    mnopqrstuvwxyz: Math.random() <= 0.5,
    efghijklmnopqrstuvwxyz: Math.random() <= 0.5,
    abcdefghijklmnopqrstuvwxyz: Math.random() <= 0.5,
    abcd: Math.random() <= 0.5,
    efghijkl: Math.random() <= 0.5,
    mnopqrstuvwxyz: Math.random() <= 0.5,
    efghijklmnopqrstuvwxyz: Math.random() <= 0.5,
    abcdefghijklmnopqrstuvwxyz: Math.random() <= 0.5,
    two: false,
    three: true
}

var arr = [
    true && "one",
    Math.random() <= 0.5 && "abcd",
    Math.random() <= 0.5 && "efghijkl",
    Math.random() <= 0.5 && "mnopqrstuvwxyz",
    Math.random() <= 0.5 && "efghijklmnopqrstuvwxyz",
    Math.random() <= 0.5 && "abcdefghijklmnopqrstuvwxyz",
    Math.random() <= 0.5 && "abcd",
    Math.random() <= 0.5 && "efghijkl",
    Math.random() <= 0.5 && "mnopqrstuvwxyz",
    Math.random() <= 0.5 && "efghijklmnopqrstuvwxyz",
    Math.random() <= 0.5 && "abcdefghijklmnopqrstuvwxyz",
    false && "two",
    true && "three",
]

Tests:

classcat(arr)
window.classcat(arr)
classcat(obj)
window.classcat(obj)
clsx(arr)
clsx(arr)
clsx(obj)
clsx(obj)
objstr(obj)
window.objstr(obj)
arr.filter(Boolean).join(" ")
arr.filter(Boolean).join(" ")
merge-class-names(arr)
window.mcn(arr)
merge-class-names(obj)
window.mcn(obj)

Run results for: classcat, clsx, obj-str, vanilla, merge-class-names

classcat(arr)

classcat(obj)

clsx(arr)

clsx(obj)

objstr(obj)

arr.filter(Boolean).join(" ")

merge-class-names(arr)

merge-class-names(obj)