Benchmark: Latest Classnames vs CLSX vs Alternatives

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 Preparation code:

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

Tests:

classnames
let result = window.classNames(str, obj, arr, 'test classname')
clsx
let result = window.clsx(str, obj, arr, 'test classname')
Array based
function ts(...args){ let template = []; args.forEach(arg => { if (typeof arg === 'string') { template.push(arg); return; } if (arg.join) { template = [...template, ...arg]; return; } let entries = Object.entries(arg); if (entries.length) { entries.forEach(entry => { if(entry[1]) template.push(entry[0]) }) } }) return template.join(' '); } let result = ts(str, obj, arr, 'test classname')
String based (return struct)
function ts(...args){ let template = ''; args.forEach(arg => { if (typeof arg === 'string') { template += ' '+arg; return; } if (arg.join) { arg.forEach((e) => { template += ' ' + e; }) return; } let entries = Object.entries(arg); if (entries.length) { entries.forEach(entry => { if(entry[1]) template += ' ' + entry[0] }) } }) return template; } let result = ts(str, obj, arr, 'test classname')
String based (if-else struct)
function ts(...args){ let template = ''; args.forEach(arg => { if (typeof arg === 'string') { template += ' '+arg; } else if (arg.join) { arg.forEach((e) => { template += ' ' + e; }) } else { let entries = Object.entries(arg); if (entries.length) { entries.forEach(entry => { if(entry[1]) template += ' ' + entry[0] }) } } }) return template; } let result = ts(str, obj, arr, 'test classname')
Entries, filter, map, join
let objStyle = Object.entries(obj).filter((style)=>style[1]).map(style => style[0]).join(' '); let arrComb = arr.join(' ') let result = `${str} ${objStyle} ${arrComb} test classname`

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
classnames
clsx
Array based
String based (return struct)
String based (if-else struct)
Entries, filter, map, join

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:109.0) Gecko/20100101 Firefox/111.0

Browser/OS: Firefox 111 on Windows 7

View result in a separate tab

Test name	Executions per second
classnames	1347137.1 Ops/sec
clsx	2195093.8 Ops/sec
Array based	1309586.8 Ops/sec
String based (return struct)	2261340.2 Ops/sec
String based (if-else struct)	2264991.2 Ops/sec
Entries, filter, map, join	2219996.5 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated 2 months ago):

LLMs can make mistakes. Check important info.

Let's dive into the benchmark and explain what's being tested.

**Benchmark Definition**

The benchmark is designed to compare four approaches for creating template strings with different class names:

1. `classnames`
2. `clsx`
3. An own implementation of creating a template string (not specified in the benchmark definition)
4. Three variations of the above implementation: `String based (return struct)`, `String based (if-else struct)`, and `Entries, filter, map, join`

**What is being tested?**

The benchmark tests how fast each approach can generate a template string with the given class names. The test cases use a predefined script preparation code and HTML preparation code to set up the environment.

Here's a brief explanation of what each approach does:

* `classnames` and `clsx`: These are two popular libraries that provide a simple way to conditionally include class names in a template string.
	+ `classnames` uses an array-based approach, where it iterates over the classes and checks if they should be included using a conditional statement.
	+ `clsx` uses a functional programming-style approach, where it applies functions to each element of the input arrays to determine whether to include the class name in the output string.
* The own implementation: This is not specified in the benchmark definition, so we'll assume it's a custom implementation that needs to be analyzed and compared with the other approaches.
* `String based (return struct)` and `String based (if-else struct)`: These are two variations of an array-based approach. The difference lies in how the string is constructed: using a return statement or if-else statements, respectively.
* `Entries, filter, map, join`: This approach uses four functional programming operations to process the input arrays and generate the final template string.

**Results**

The benchmark results show the execution speed of each approach on different browsers and devices. The fastest execution time is recorded for `String based (if-else struct)`, followed by `Entries, filter, map, join`. The other approaches are slower.

In general, the results suggest that:

* Functional programming-style approaches like `clsx` tend to be faster than array-based approaches.
* Using built-in functions and operations can lead to better performance compared to custom implementations or complex conditional statements.
* The order of operations and the use of caching mechanisms (e.g., memoization) can significantly impact performance.

**Takeaways**

The benchmark highlights the importance of considering performance when choosing a library or implementing a template string generation algorithm. By analyzing different approaches and their trade-offs, developers can make informed decisions about how to optimize their code for better execution speed.

Related benchmarks:

Latest Classnames vs CLSX vs Alternatives (version: 0)

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

Comparing performance of: classnames vs clsx vs Array based vs String based (return struct) vs String based (if-else struct) vs Entries, filter, map, join

Created: one year ago by: Guest

Jump to the latest result

classnames

clsx

Array based

String based (return struct)

String based (if-else struct)

Entries, filter, map, join

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 2 months ago):