Benchmark: date-fns vs momentjs date formatting

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.1/moment.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/date-fns/1.30.1/date_fns.min.js"></script>

Script Preparation code:

window.__date__ = new Date();
window.__expected__ = '2021/09/26';

Tests:

moment
const actual = moment(__date__).format('DD/MM/YYYY hh:mm A'); const actual2 = moment(__date__).format("hh:mm A");
date-fns
const actual = dateFns.format(__date__, 'DD/MM/YYYY hh:mm A'); const actual2 = dateFns.format(__date__, 'hh:mm A');

Historical Performance Data aggregated from 9 community runs

Desktop Results:

Chrome 9 runs

moment

333K/s

date-fns

263K/s

Fastest: moment (1.3x faster)

View exact numbers

✓ moment: 333,438 ops/sec
• date-fns: 262,606 ops/sec

Results show median performance across all community submissions. Run this benchmark yourself to verify on your device.

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
moment
date-fns

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/136.0.0.0 Safari/537.36

Browser/OS: Chrome 136 on Windows

View result in a separate tab

moment

699K/s

date-fns

418K/s

View exact numbers

Test name	Executions per second
✓ moment	699,475 Ops/sec
date-fns	417,516 Ops/sec

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 its results.

**What is being tested?**

The provided JSON represents a JavaScript microbenchmarking test that compares two libraries: Moment.js and date-fns. The test focuses on the `date` formatting functionality of these libraries, specifically the formatting of dates in different formats (e.g., 'DD/MM/YYYY hh:mm A' vs 'hh:mm A').

**Options being compared**

Two options are being compared:

1. **Moment.js**: A popular JavaScript library for working with dates and times.
2. **date-fns**: A lightweight, modern alternative to Moment.js for date and time calculations.

**Pros and Cons of each approach:**

* **Moment.js**: Pros:
	+ Widely adopted and well-maintained
	+ Supports a wide range of date and time formats
	+ Has a large community of developers contributing to its development
* Cons:
	+ Can be slower and more memory-intensive than date-fns
	+ Can be overwhelming due to its extensive feature set
* **date-fns**: Pros:
	+ Lightweight (smaller bundle size) and fast
	+ Simple and intuitive API
	+ Designed for modern JavaScript environments
* Cons:
	+ Smaller community compared to Moment.js
	+ Limited support for some advanced date and time formats

**Library usage:**

In the provided benchmark, both libraries are used in their `date` formatting functionality. The test code uses the `moment()` function from Moment.js to format dates, while date-fns is used with its `format()` method.

**Special JavaScript features or syntax:**

No special JavaScript features or syntax are being tested in this benchmark. It's a straightforward comparison of two libraries' functionality.

**Other considerations:**

When choosing between Moment.js and date-fns for your project, consider the following factors:

* Performance: If you prioritize speed and efficiency, date-fns might be a better choice.
* Feature set: If you need advanced date and time formatting capabilities, Moment.js might be more suitable.
* Learning curve: If you're new to either library, date-fns has a simpler API that's easier to learn.

**Alternatives:**

If you're not satisfied with Moment.js or date-fns, other alternatives for JavaScript date and time libraries include:

1. **Luxon**: A modern, high-performance library for working with dates and times.
2. **Day.js**: A lightweight, easy-to-use library that provides a simple API for working with dates and times.
3. **Dateutil**: A popular library for working with dates and times in JavaScript, although it's older than the others mentioned.

These alternatives might offer different trade-offs between performance, feature set, and ease of use, so be sure to evaluate them based on your specific needs.

date-fns vs momentjs date formatting (version: 0)

It's not a deep validation; I'm just comparing ONE function that those two libraries have in common.

Comparing performance of: `moment vs date-fns`

Created: 4 years ago by: Guest

Go to the latest result

moment

date-fns

Historical Performance Data aggregated from 9 community runs

Desktop Results:

Chrome 9 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

date-fns vs momentjs date formatting (version: 0)

It's not a deep validation; I'm just comparing ONE function that those two libraries have in common.

Comparing performance of: moment vs date-fns

Created: 4 years ago by: Guest

Go to the latest result

moment

date-fns

Historical Performance Data aggregated from 9 community runs

Desktop Results:

Chrome 9 runs

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: `moment vs date-fns`