Benchmark: Moment Dayjs Date-fns date format benchmark

HTML Preparation code:

<script src="https://unpkg.com/dayjs@1.8.21/dayjs.min.js"></script>
<script src="https://igor.moomers.org/random/datefns.js"></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.0/moment.min.js'></script>

Script Preparation code:

window.dsStart = "2020-02-19T00:51:53.623839+00:00";
window.dsEnd = "2020-02-19T01:23:10.283748+00:00";

Tests:

date
var from = new Date(dsStart) var to = new Date(dsEnd) var res = from.getTime()-to.getTime()
Momentjs
var from = moment(dsStart) var to = moment(dsEnd) var res = from.diff(to, 'seconds')
Dayjs
var from = moment(dsStart) var to = moment(dsEnd) var res = from.diff(to, 'seconds')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
date
Momentjs
Dayjs

Fastest: N/A

Slowest: N/A

Autogenerated LLM Sumamry (model llama3.2:3b, generated 2 days ago):

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks and explore what's being tested in this specific benchmark.

**Benchmark Overview**

The benchmark is designed to compare the performance of three date formatting libraries: Moment.js, Day.js, and Date-fns. The test case involves creating two dates from a predefined start and end time using each library, and then calculating the difference between these two dates in seconds.

**Options Compared**

The options being compared are:

1. **Moment.js**: A popular JavaScript library for working with dates.
2. **Day.js**: A modern alternative to Moment.js, designed to be faster and more efficient.
3. **Date-fns**: A small, lightweight library that provides utility functions for working with dates.

**Pros and Cons of Each Approach**

1. **Moment.js**:
	* Pros: Well-established library with a large community, extensive feature set, and good documentation.
	* Cons: Can be slow due to its complex internal workings, may have performance issues with very large date ranges.
2. **Day.js**:
	* Pros: Designed for speed and efficiency, uses a simpler approach to calculating dates, which can lead to better performance.
	* Cons: Smaller community compared to Moment.js, fewer features available out of the box.
3. **Date-fns**:
	* Pros: Extremely lightweight and fast, easy to use and understand, suitable for simple date-related tasks.
	* Cons: Limited feature set compared to Moment.js, may not be suitable for complex date calculations.

**Library Usage**

The test case uses the following libraries:

1. **Moment.js**: Used in two test cases (`Momentjs` and `Dayjs`) with slight variations.
2. **Day.js**: Used in its own test case (`Dayjs`).
3. **Date-fns**: Not used directly in any of the test cases, but its date formatting functions are available through the included HTML scripts.

**Special JS Features or Syntax**

There doesn't appear to be any special JavaScript features or syntax being used in this benchmark. The focus is on comparing the performance of different libraries for simple date calculations.

**Other Alternatives**

If you're looking for alternative libraries for working with dates, some other options include:

1. **Luxon**: A modern, lightweight library that provides a wide range of date and time functions.
2. **JSDate**: A small, fast library that provides basic date-related functionality.
3. **date-fns**: As mentioned earlier, this is a lightweight library that provides utility functions for working with dates.

These alternatives may offer better performance or additional features compared to the libraries being tested in this benchmark.

Latest run results:

Run details: (Test run date: 16 days ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36

Browser/OS: Chrome 129 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
date	1951549.0 Ops/sec
Momentjs	108381.8 Ops/sec
Dayjs	108156.0 Ops/sec

Related benchmarks:

Moment Dayjs Date-fns date format benchmark (version: 0)

Moment Dayjs Date-fns format benchmark

Comparing performance of: date vs Momentjs vs Dayjs

Created: 16 days ago by: Guest

Jump to the latest result

date

Momentjs

Dayjs

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Sumamry (model llama3.2:3b, generated 2 days ago):