Benchmark: luxon-v-Intl format, luxon-v-Date native parse

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/luxon@2.0.2/build/global/luxon.min.js"></script>

Script Preparation code:

window.__dateISO__ = '2021-09-24T07:36:51+0000'
window.__date__ = new Date(__dateISO__);
window.__expected__ = '09/24/2021';
window.__intlFormatter = new Intl.DateTimeFormat('en', {
  year: '2-digit',
  month: '2-digit',
  day: '2-digit',
});

Tests:

moment/luxon - format
var actual = luxon.DateTime.fromJSDate(__date__).toLocaleString(); console.assert(actual === __expected__);
Intl - format
var actual = window.__intlFormatter.format(__date__); console.assert(actual === __expected__);
moment/luxon - parse
var actual = luxon.DateTime.fromISO(__dateISO__).toJSDate(); console.assert(__date__.getTime() === actual.getTime());
Native parse
var actual = new Date(__dateISO__); console.assert(__date__.getTime() === actual.getTime());

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
moment/luxon - format
Intl - format
moment/luxon - parse
Native parse

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what is being tested.

**Overall Purpose:**
The test cases measure the performance of different approaches to parse and format dates using JavaScript libraries.

**Test Cases:**

1. **luxon DateTime.fromJSDate()**: Tests the parsing of a date object from a JavaScript Date instance.
2. **Intl - format**: Tests the formatting of a date object using the Intl.DateTimeFormat API.
3. **moment/luxon - parse**: Tests the parsing of an ISO-formatted string into a JavaScript Date instance (using both Luxon and Moment.js).
4. **Native parse**: Tests the direct parsing of an ISO-formatted string into a JavaScript Date instance.

**Options Compared:**

* Luxon DateTime.fromJSDate() vs. Intl.DateTimeFormat API
* Luxon DateTime.fromISO() vs. Native parse
* Moment.js vs. Luxon for parsing ISO-formatted strings

**Pros and Cons:**

1. **Luxon DateTime.fromJSDate() vs. Intl.DateTimeFormat API**:
	* Luxon is a popular, actively maintained library with good performance.
	* Intl.DateTimeFormat provides a more flexible way to format dates, but may be slower due to the complexity of the formatting options.
2. **Luxon DateTime.fromISO() vs. Native parse**:
	* Luxon's fromISO method is faster and more efficient than parsing an ISO-formatted string directly.
	* Direct parsing can lead to precision issues if not done correctly (e.g., handling timezones).
3. **Moment.js vs. Luxon for parsing ISO-formatted strings**:
	* Moment.js is a well-established library, but its performance may not be as good as Luxon's.
	* Luxon is generally considered more lightweight and efficient.

**Library Descriptions:**

1. **Luxon**: A modern, open-source date and time library that provides a simple and consistent API for working with dates and times. It includes features like parsing and formatting of various date formats, handling of timezones, and support for internationalization.
2. **Intl.DateTimeFormat**: The Internationalized Locales API in JavaScript, which allows developers to format dates according to the user's locale settings.

**Special JS Features/Syntax:**

1. **JSR-310 (ISO-formatted strings)**: A Java Standard Edition (SE) specification that defines a set of date and time formats, including ISO 8601. The test cases use this standard for formatting dates.
2. **Intl.DateTimeFormat options**: The Intl.DateTimeFormat API allows developers to customize the formatting options, such as the locale, year, month, and day styles.

**Other Alternatives:**

* Other JavaScript libraries for working with dates and times, such as Day.js or date-fns.
* Native JavaScript APIs like Date and RegExp, which can be used for simple date manipulation but may not offer the same level of functionality as dedicated libraries like Luxon.

Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:93.0) Gecko/20100101 Firefox/93.0

Browser/OS: Firefox 93 on Mac OS X 10.15

View result in a separate tab

Test name	Executions per second
moment/luxon - format	32742.1 Ops/sec
Intl - format	41999.8 Ops/sec
moment/luxon - parse	125257.4 Ops/sec
Native parse	3189029.2 Ops/sec

Related benchmarks:

luxon-v-Intl format, luxon-v-Date native parse (version: 0)

Comparing performance of: moment/luxon - format vs Intl - format vs moment/luxon - parse vs Native parse

Created: 3 years ago by: Guest

Jump to the latest result

moment/luxon - format

Intl - format

moment/luxon - parse

Native parse

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):