Benchmark: luxon vs datefns vs moment-timezone

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/luxon@1.26.0/build/global/luxon.min.js"></script>
<script src="https://igor.moomers.org/random/datefns.js"></script>
<script src='https://momentjs.com/downloads/moment-with-locales.min.js'></script>
<script src='https://momentjs.com/downloads/moment-timezone-with-data-10-year-range.min.js'></script>

Script Preparation code:

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

Tests:

datefns
window.datefns.parseISO(window.ds)
luxon
luxon.DateTime.fromISO(ds);
moment-timezone
moment.utc(ds)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
datefns
luxon
moment-timezone

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks.

**Benchmark Overview**

The benchmark compares three libraries: Luxon, Datefns, and Moment-Timezone, specifically for parsing ISO-formatted date strings. The goal is to determine which library performs better in terms of execution speed.

**Options Compared**

The benchmark tests the following options:

1. **Luxon**: `luxon.DateTime.fromISO(ds)`
2. **Datefns**: `window.datefns.parseISO(window.ds)`
3. **Moment-Timezone**: `moment.utc(ds)`

Each library is tested individually, and their performance is measured in executions per second.

**Pros and Cons of Each Approach**

1. **Luxon**:
	* Pros: Luxon is a modern, designed-for-performance library that takes advantage of native JavaScript features like `Date` objects and typed arrays.
	* Cons: Luxon has a steeper learning curve due to its functional programming style and proprietary data structures.
2. **Datefns**:
	* Pros: Datefns is a lightweight, popular library with a simple API and good performance for many common date-related tasks.
	* Cons: Datefns may not be optimized for performance in all scenarios, especially compared to Luxon.
3. **Moment-Timezone**:
	* Pros: Moment-Timezone is a widely-used library that provides robust functionality for working with dates and times, including timezone support.
	* Cons: Moment-Timezone has a larger codebase than Luxon or Datefns, which can impact performance.

**Library Overview**

1. **Luxon**: A modern date and time library developed by Michael A. Borowy III. Luxon provides high-performance, feature-rich functionality for working with dates and times.
2. **Datefns**: A lightweight date library created by Igor Moiseev. Datefns aims to provide a simple API for common date-related tasks while maintaining performance.
3. **Moment-Timezone**: A popular date and time library developed by Tim.cache (formerly part of the Moment.js project). Moment-Timezone provides robust functionality, including timezone support.

**Special JavaScript Features or Syntax**

None are explicitly mentioned in this benchmark.

**Other Alternatives**

If you're interested in exploring other options for parsing ISO-formatted date strings, consider:

1. **JSDate**: A lightweight date library that aims to be more performant than Datefns.
2. **date-js**: Another lightweight date library with a simple API and good performance.
3. **Date-fns-jp**: A Japanese locale-aware version of Datefns.

Keep in mind that these alternatives might not offer the same level of performance as Luxon, but may still be suitable for certain use cases or preferences.

When choosing a library, consider factors like your project's specific needs, your team's familiarity with JavaScript and date-related tasks, and performance requirements.

Latest run results:

Run details: (Test run date: 4 days ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

Browser/OS: Chrome 130 on Windows

View result in a separate tab

Test name	Executions per second
datefns	480169.9 Ops/sec
luxon	294441.7 Ops/sec
moment-timezone	118679.3 Ops/sec

Related benchmarks:

luxon vs datefns vs moment-timezone (version: 0)

Comparing performance of: datefns vs luxon vs moment-timezone

Created: 2 years ago by: Guest

Jump to the latest result

datefns

luxon

moment-timezone

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):