Benchmark: Date timezones between libraries

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 < 1000;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} ${timeStr}`, timezone); }
luxon timezone
for(const [dateStr,timeStr,timezone] of data) { DateTime.fromISO(`${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.

The provided JSON represents a benchmark test for comparing the performance of different libraries for working with date and time zones in JavaScript.

The three libraries being compared are:

1. **Moment.js**: A popular JavaScript library for working with dates and times, which includes support for time zones.
2. **Luxon**: A modern JavaScript library for working with dates and times, which provides a robust set of features for handling time zones.
3. **date-fns**: A lightweight JavaScript library for working with dates and times, which includes support for time zones.

**Options being compared:**

Each test case is comparing the performance of one of these libraries when performing a specific operation on an array of date and time strings in different time zones.

The operations being measured are:

* Moment.js: `moment.tz(`${dateStr} ${timeStr}`, timezone)`
* Luxon: `DateTime.fromISO(`${dateStr}T${timeStr}:00`, { zone })`
* date-fns: `formatInTimeZone(new Date(`${dateStr}T${timeStr}:00Z`), timezone, 'yyyy-MM-dd HH:mm:ssXXX')`

**Pros and Cons of each approach:**

1. **Moment.js**:
	* Pros: Wide adoption, extensive feature set, well-documented.
	* Cons: Can be slow for large datasets, has some issues with time zone handling.
2. **Luxon**:
	* Pros: Modern architecture, robust time zone handling, easy to use.
	* Cons: Smaller community compared to Moment.js, might require more setup.
3. **date-fns**:
	* Pros: Lightweight and fast, simple API, well-maintained.
	* Cons: Smaller feature set compared to Moment.js and Luxon, might not be suitable for complex use cases.

**Other considerations:**

* The benchmark test uses a random array of date and time strings in different time zones, which helps to distribute the workloads evenly across the three libraries.
* Each library is tested on the same browser (Firefox 100) and device platform (Desktop Linux), which minimizes differences due to environment.
* The results will show the execution speed of each library for performing the specified operations.

**Library usage:**

All three libraries are used in their respective test cases. Moment.js uses `moment.tz` to parse and convert date strings with time zones. Luxon uses `DateTime.fromISO` to parse and convert ISO-formatted date strings with time zones. date-fns uses `formatInTimeZone` to format a Date object with a specific time zone.

**Special JS feature or syntax:**

None of the libraries require special JavaScript features or syntax that are not widely supported. They can be used in most modern browsers and environments without issues.

Overall, this benchmark test provides a fair comparison of the performance of three popular JavaScript libraries for working with date and times, including time zones.

Related benchmarks:

Date timezones between libraries (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):