Benchmark: timezone: luxon vs datefns

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/luxon@1.22.0/build/global/luxon.min.js" integrity="sha256-9nOzQsMIG12Bislqz+VUSDS8iyP0q4iCy1FfzoRvbXY=" crossorigin="anonymous"></script>
<script src="https://igor.moomers.org/random/datefns.js"></script>

Script Preparation code:

window.ds = "2020-02-19T00:51:53.623839+00:00";

Tests:

datefns
window.do = window.datefns.parseISO(window.ds) window.intz = window.datefns.addMinutes(window.do, window.do.getTimezoneOffset()) window.datefns.format(window.intz, "yyyy-MM-dd HH:mm:ss 'TZ'")
luxon
window.do = luxon.DateTime.fromISO(ds); window.intz = window.do.toLocal(); window.intz.toFormat("yyyy-MM-dd HH:mm:ss TZ")

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
datefns
luxon

Fastest: N/A

Slowest: N/A

Latest run results:

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

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

**Benchmark Definition**

The benchmark compares the performance of two JavaScript libraries: Luxon and Datefns. Specifically, it tests how long it takes to format UTC time in the local timezone using each library.

**Script Preparation Code**

The script preparation code sets up a constant `ds` with a sample UTC date string: `"2020-02-19T00:51:53.623839+00:00"`.

**Html Preparation Code**

The HTML preparation code includes two JavaScript files:

1. Luxon: `https://cdn.jsdelivr.net/npm/luxon@1.22.0/build/global/luxon.min.js`
2. Datefns: a custom-built file from `igor.moomers.org/random/datefns.js`

**Individual Test Cases**

There are two test cases:

1. **Datefns**
	* The benchmark definition sets up three variables:
		+ `do`: parsed ISO string using `datefns.parseISO`
		+ `intz`: timezone-adjusted date using `addMinutes`
		+ formatted date string using `format`
2. **Luxon**
	* The benchmark definition sets up two variables:
		+ `do`: parsed ISO string using `luxon.DateTime.fromISO`
		+ `intz`: timezone-adjusted date using `toLocal`
		+ formatted date string using `toFormat`

**Comparison**

The benchmark compares the execution time of each library's function calls for each test case.

**Options Compared**

The options being compared are:

* Luxon's `fromISO` and `toLocal` functions
* Datefns' `parseISO`, `addMinutes`, and `format` functions

**Pros and Cons of Each Approach**

Here's a brief summary of the pros and cons of each approach:

1. **Luxon**
	* Pros:
		+ Simpler API with fewer function calls
		+ Faster execution time (as seen in the benchmark result)
	* Cons:
		+ Fewer features compared to Datefns
2. **Datefns**
	* Pros:
		+ More features and flexibility
		+ May be more suitable for complex timezone calculations
	* Cons:
		+ Slower execution time (as seen in the benchmark result)

**Special JS Feature or Syntax**

This benchmark uses JavaScript functions, which is a fundamental aspect of JavaScript. There are no special features or syntax mentioned.

**Library and Purpose**

1. **Luxon**: A modern JavaScript date and time library that provides a simple and consistent API for working with dates and times.
2. **Datefns**: A popular JavaScript date and time library that offers a more extensive set of features, including timezone calculations, formatting, and parsing.

**Other Alternatives**

Some other JavaScript libraries that might be used for timezone calculations or date and time manipulation include:

* Moment.js (although it's not actively maintained)
* js-joda (a Java-inspired library)
* moment-timezone (an extension of Moment.js)

Keep in mind that this is just a general overview, and the specific use case may require different considerations.

Related benchmarks:

timezone: luxon vs datefns (version: 2)

compare how long it takes to format utc time in local timezone using either library

Comparing performance of: datefns vs luxon

Created: 6 years ago by: Registered User

Jump to the latest result

datefns

luxon

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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