Benchmark: Date timezones between librariesz

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment-timezone/0.5.34/moment-timezone.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.4/moment.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/luxon/3.0.1/luxon.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/date-fns-tz@1.3.6/index.min.js"></script>

Script Preparation code:

window.data = []
for( let i = 0 ; i < 10000;i ++) {
	data[`2022-${Math.floor(Math.random() * 12) + 1}-${Math.floor(Math.random() * 25) + 1}`,`${Math.floor(Math.random() * 24).toString().padStart(2,'0')}:${Math.floor(Math.random() * 60).toString().padStart(2,'0')}`,'America/Los_Angeles'] 
}

Tests:

moment timezone
for(const [dateStr,timeStr,timezone] of data) { moment.tz(`${dateStr} ${timeStr}`, timezone); }
luxon timezone
for(const [dateStr,timeStr,zone] of data) { DateTime.fromISO(`${dateStr}T${timeStr}:00`, { zone }); }
date-fn timezone
for(const [dateStr,timeStr,timezone] of data) { formatInTimeZone(new Date(`${dateStr}T${timeStr}:00Z`), timezone, 'yyyy-MM-dd HH:mm:ssXXX') }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
moment timezone
luxon timezone
date-fn timezone

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

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

**Benchmark Overview**

The benchmark measures the performance of three JavaScript libraries: Moment.js, Luxon, and Date-FNS (also known as date-fns-tz). The goal is to compare their performance when performing timezone conversions on a large dataset of randomly generated datetime strings.

**Options Being Compared**

There are three test cases:

1. **Moment.js Timezone**: This test case uses the `moment.tz` function to convert datetime strings to specific timezones.
2. **Luxon Timezone**: This test case uses the `DateTime.fromISO` function to convert datetime strings to specific timezones.
3. **Date-FNS (date-fns-tz) Timezone**: This test case uses the `formatInTimeZone` function to convert datetime strings to specific timezones.

**Pros and Cons of Each Approach**

1. **Moment.js Timezone**:
	* Pros: Wide adoption, extensive documentation, and a large community.
	* Cons: Can be slower than other libraries due to its complexity and the need for additional dependencies.
2. **Luxon Timezone**:
	* Pros: Modern design, high performance, and easy-to-use API.
	* Cons: Smaller community compared to Moment.js, but still actively maintained.
3. **Date-FNS (date-fns-tz)**:
	* Pros: High-performance, lightweight, and a simple API.
	* Cons: Smaller community compared to Moment.js or Luxon.

**Library Purpose**

1. **Moment.js**: A popular JavaScript library for working with dates and times, providing a wide range of features for date arithmetic, formatting, and timezone conversions.
2. **Luxon**: A modern JavaScript library for working with dates and times, providing an elegant and high-performance API for timezone conversions and other date-related tasks.
3. **Date-FNS (date-fns-tz)**: A lightweight JavaScript library that extends the original `date-fns` library to provide timezone conversion capabilities.

**Other Considerations**

* The benchmark uses a large dataset of randomly generated datetime strings, which helps to eliminate any effects due to small input sizes or edge cases.
* The test cases use different approaches to convert datetime strings to specific timezones, which allows for a fair comparison between the libraries.
* The benchmark results are displayed as `ExecutionsPerSecond`, which measures the performance in terms of the number of executions per second.

**Alternatives**

If you're interested in exploring alternative JavaScript libraries for timezone conversions, some notable mentions include:

1. **Day.js**: A modern JavaScript library for working with dates and times, providing a simple and high-performance API.
2. **Datepicker.js**: A lightweight JavaScript library that provides a simple way to handle date-related tasks, including timezone conversions.

Ultimately, the choice of library depends on your specific use case, performance requirements, and personal preferences.

Related benchmarks:

Date timezones between librariesz (version: 0)

Comparing performance of: moment timezone vs luxon timezone vs date-fn timezone

Created: 3 years ago by: Guest

Jump to the latest result

moment timezone

luxon timezone

date-fn timezone

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):