Benchmark: Dayjs Date-fns format comparison 6

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 Preparation code:

window.ds = dayjs(new Date("2020-02-19T00:51:53.623839+00:00"));
window.ht = new Date("2020-02-19T00:51:53.623839+00:00");

Tests:

Date-fns
window.datefns.startOfWeek(window.ht);
Dayjs
window.ds.startOf("week")

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Date-fns
Dayjs

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Mobile Safari/537.36

Browser/OS: Chrome Mobile 136 on Android

View result in a separate tab

Test name	Executions per second
Date-fns	1474339.6 Ops/sec
Dayjs	1796615.6 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 JSON data to understand what's being tested.

**Benchmark Definition**

The benchmark is comparing two JavaScript libraries, Dayjs and Date-fns, for formatting dates in a specific way: `startOfWeek`. The test cases are:

1. **Date-fns**: "window.datefns.startOfWeek(window.ht);"
2. **Dayjs**: "window.ds.startOf(\"week\");"

**Options being compared**

The options being compared are the performance of two libraries, Dayjs and Date-fns, for a specific date formatting task (`startOfWeek`).

**Pros and Cons of each approach:**

1. **Date-fns**:
	* Pros:
		+ Optimized for browser performance
		+ Supports various date formats and operations
		+ Easy to use and integrate into projects
	* Cons:
		+ May have additional dependencies or overhead due to its modular design
2. **Dayjs**:
	* Pros:
		+ Lightweight and efficient, making it suitable for small JavaScript applications or those with limited resources
		+ Simple and intuitive API
	* Cons:
		+ Smaller community and fewer documentation resources compared to Date-fns

**Library and its purpose**

1. **Date-fns**: A JavaScript library that provides a set of high-quality date formatting functions, including `startOfWeek`. It's designed for ease of use and performance in browser environments.
2. **Dayjs**: A lightweight JavaScript date library (around 20KB gzipped) that aims to be more efficient than traditional date libraries like Moment.js.

**Special JS feature or syntax**

None mentioned in the provided benchmark data, but it's worth noting that Dayjs supports a simple and concise API with functions like `ds.startOf("week")`, which is easy to read and write.

**Other alternatives**

If you're looking for alternative libraries for date formatting and operations, some popular options include:

1. **Moment.js**: A widely used and well-maintained library that offers advanced features and support for various formats.
2. **Luxon**: Another lightweight and modern JavaScript date library with a strong focus on performance and ease of use.
3. **js-joda**: A JavaScript port of the popular Joda-Time library, offering a comprehensive set of date and time utilities.

When choosing a library for your project, consider factors like performance requirements, community support, documentation resources, and personal preference.

Related benchmarks:

Dayjs Date-fns format comparison 6 (version: 0)

Comparing performance of: Date-fns vs Dayjs

Created: 3 years ago by: Guest

Jump to the latest result

Date-fns

Dayjs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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