Benchmark: dayjs vs luxon withTimezoneFromString

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/dayjs@1.11.11/dayjs.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/dayjs@1.11.11/plugin/timezone.js"></script>
<script src="https://cdn.jsdelivr.net/npm/dayjs@1.11.11/plugin/utc.js"></script>
<script src="https://cdn.jsdelivr.net/npm/luxon@1.28.0/build/global/luxon.min.js"></script>

Script Preparation code:

dayjs.extend(window.dayjs_plugin_utc)
dayjs.extend(window.dayjs_plugin_timezone)

window.__date__ = '2024-05-27 08:33';
window.__format__ = 'YYYY-MM-DD HH:mm';
window.__timezone__ = 'Europe/Warsaw';
window.__luxon__ = luxon;
window.__dayjs__ = dayjs;

Tests:

luxon
__luxon__.DateTime.fromFormat(__date__, 'yyyy-MM-dd HH:mm', { zone: __timezone__ });
dayjs
__dayjs__.tz(__date__, 'YYYY-MM-DD HH:mm', __timezone__);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
luxon
dayjs

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36

Browser/OS: Chrome 138 on Windows

View result in a separate tab

dayjs

64K/s

luxon

30K/s

View exact numbers

Test name	Executions per second
✓ dayjs	63,696 Ops/sec
luxon	30,445 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into the benchmark and explore what's being tested.

**Benchmark Overview**

The benchmark is designed to compare the performance of two date and time libraries: Day.js and Luxon, in specific scenarios involving timezone conversions. The tests are written as JavaScript microbenchmarks, making it easy for users to create and run their own comparisons.

**Test Case 1: Luxon**

In this test case, Luxon's `DateTime` class is used to convert a date string from the format `'yyyy-MM-dd HH:mm'` to a datetime object with timezone information. The input date string is set to `'2024-05-27 08:33'`, and the timezone is set to `'Europe/Warsaw'`.

**Test Case 2: Day.js**

In this test case, Day.js's `tz` method is used to convert the same date string to a datetime object with timezone information. The input date string is in the format `'YYYY-MM-DD HH:mm'`, and the timezone is set to `'Europe/Warsaw'`.

**Comparison of Options**

The two libraries offer different approaches to handling timezones:

1. **Luxon**: Luxon uses a more traditional, object-based approach to representing dates and times, with a focus on supporting a wide range of formats and features. In this test case, the `DateTime` class is used to handle the timezone conversion.
2. **Day.js**: Day.js takes a more functional programming-inspired approach, using methods like `tz` to perform conversions. This allows for a more concise and expressive API, but may come at the cost of performance.

**Pros and Cons**

* **Luxon:**
	+ Pros:
		- Supports a wide range of formats and features.
		- Provides a robust and well-documented API.
	+ Cons:
		- May be less performant due to its object-based approach.
* **Day.js:**
	+ Pros:
		- Offers a concise and expressive API.
		- May be more suitable for applications that require frequent, lightweight timezone conversions.
	+ Cons:
		- May not support as wide of a range of formats and features.

**Library Considerations**

Both libraries are widely used and well-regarded in the JavaScript community. Luxon is particularly popular among developers working with internationalized applications, while Day.js has gained traction in recent years due to its concise API and strong focus on functional programming principles.

**Special JS Features/Syntax**

Neither library uses any special or syntax-specific features that would make it difficult for non-expert users to understand the benchmarks. However, both libraries rely on modern JavaScript features like ES6 classes (Luxon) and arrow functions (Day.js).

**Other Alternatives**

There are other date and time libraries available in JavaScript, including:

* Moment.js: A widely used library that provides a comprehensive API for working with dates and times.
* js-joda: A Java-inspired library that offers a robust set of features for handling dates and times.
* Moment-Timezone: An extension to Moment.js that adds timezone support.

These libraries may offer different trade-offs in terms of performance, features, and API complexity, which may be worth considering depending on the specific use case.

dayjs vs luxon withTimezoneFromString (version: 0)

Comparing performance of: `luxon vs dayjs`

Created: 2 years ago by: Guest

Go to the latest result

luxon

dayjs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

dayjs vs luxon withTimezoneFromString (version: 0)

Comparing performance of: luxon vs dayjs

Created: 2 years ago by: Guest

Go to the latest result

luxon

dayjs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

Related benchmarks

Comparing performance of: `luxon vs dayjs`