Benchmark: JS Date vs luxon

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/luxon@3.6.1/build/global/luxon.min.js"></script>

Script Preparation code:

window.value = '2020-02-19T00:51:53.623839+00:00';

Tests:

JS Date
new Date(value)
Luxon
luxon.DateTime.fromISO(value)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
JS Date
Luxon

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:140.0) Gecko/20100101 Firefox/140.0

Browser/OS: Firefox 140 on Mac OS X 10.15

View result in a separate tab

JS Date

16.3M/s

Luxon

337K/s

View exact numbers

Test name	Executions per second
✓ JS Date	16,268,811 Ops/sec
Luxon	337,275 Ops/sec

Autogenerated LLM Summary (model gpt-4o-mini, generated one year ago):

LLMs can make mistakes. Check important info.

In the provided benchmark, two approaches for handling date-time parsing in JavaScript are compared: the built-in JavaScript `Date` object and the `luxon` library.

### Options Compared

1. **JavaScript Date Object (`new Date(value)`):**
   - **Test Name:** JS Date
   - **Benchmark Definition:** `new Date(value)`
   - **Purpose:** The native JavaScript `Date` object is used to represent dates and times in a way that's easy to manipulate and display. It supports several date and time formats and has methods to get parts of a `Date`, like year, month, day, etc.

2. **Luxon Library (`luxon.DateTime.fromISO(value)`):**
   - **Test Name:** Luxon
   - **Benchmark Definition:** `luxon.DateTime.fromISO(value)`
   - **Purpose:** Luxon is a modern library for working with dates and times in JavaScript. It provides a more extensive and user-friendly API compared to the native `Date` object. Luxon supports time zones, formatting, and easier manipulation of dates and times, making it preferable for complex date handling scenarios.

### Performance Results

According to the benchmark results:

- **JS Date:**
  - **Executions per Second:** 50,594,344.0
- **Luxon:**
  - **Executions per Second:** 474,025.0

Clearly, the JavaScript `Date` object significantly outperforms Luxon in terms of the number of executions per second, which suggests that for simple date parsing and handling, the native option is faster.

### Pros and Cons

**JavaScript Date Object:**

**Pros:**
- Very fast for basic operations, as evident in the benchmark results.
- Built-in, so no additional libraries or dependencies are required.

**Cons:**
- Limited functionality regarding time zones and more complex date manipulations.
- Parsing can be inconsistent with different date formats, leading to potential errors.

**Luxon Library:**

**Pros:**
- User-friendly API with features like timezone handling and easy formatting.
- Offers extensive capabilities for complex date manipulations, such as intervals, durations, and localized formatting.

**Cons:**
- Performance is slower compared to the native `Date` object, as shown in the results.
- Requires an additional library which adds to the initial load time and can increase bundle size.

### Other Considerations

When choosing between the JavaScript `Date` object and Luxon, developers should consider the specific needs of their application:

- **For Simple Tasks:** If the application primarily deals with basic date math or formatting and speed is critical, the native `Date` object may be the best choice.
  
- **For Complex Date Handling:** If time zones and complex date manipulations are required, investing in Luxon can save time in development and reduce bugs.

### Alternatives

Beyond `Date` and Luxon, there are other libraries that also assist with date/time management in JavaScript:

1. **Day.js:** A lightweight alternative to Moment.js, offering an API similar to Moment.js but with better performance and smaller size.
2. **Moment.js:** Although a widely used library, it has been marked as a legacy project and is generally not recommended for new projects due to its size and performance limitations.
3. **date-fns:** A modular date utility library that allows you to import only the functions you need, making it more lightweight and potentially more performant.

In summary, the benchmark is a straightforward comparison of date parsing between the native JavaScript `Date` object and the Luxon library, highlighting the trade-offs between performance and functionality in date/time management in JavaScript applications.

JS Date vs luxon (version: 1)

Comparing performance of: `JS Date vs Luxon`

Created: one year ago by: Guest

Go to the latest result

JS Date

Luxon

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model gpt-4o-mini, generated one year ago):

JS Date vs luxon (version: 1)

Comparing performance of: JS Date vs Luxon

Created: one year ago by: Guest

Go to the latest result

JS Date

Luxon

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model gpt-4o-mini, generated one year ago):

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Comparing performance of: `JS Date vs Luxon`