Benchmark: date diff - MeasureThat.net

HTML Preparation code:

<script src="https://igor.moomers.org/random/datefns.js"></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/dayjs/1.11.7/dayjs.min.js'></script>

Script Preparation code:

window.dsFrom = "2020-02-19T00:51:53.623839+00:00";
window.dsTo = "2023-02-19T00:51:53.623839+00:00";

Tests:

date-fns
window.datefns.differenceInHours(window.dsTo, window.dsFrom)
dayjs
const dateTo = dayjs(window.dsTo) dateTo.diff(window.dsFrom, 'hours')

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

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and its test cases.

**Benchmark Overview**

The benchmark, named "date diff", measures the performance of two date manipulation libraries: `datefns` and `dayjs`. The script preparation code sets up test dates `dsFrom` and `dsTo`, which are used as input for the benchmark tests. The HTML preparation code loads these libraries.

**Test Cases**

There are two individual test cases:

1. **date-fns**
The benchmark definition is: `window.datefns.differenceInHours(window.dsTo, window.dsFrom)`. This function calculates the difference in hours between the two dates.
	* Pros:
		+ Simple and straightforward implementation
		+ Possibly optimized for performance by the library authors
	* Cons:
		+ Might be slower due to library overhead or unnecessary computations
2. **dayjs**
The benchmark definition is: `const dateTo = dayjs(window.dsTo); dateTo.diff(window.dsFrom, 'hours')`. This function creates a new `dayjs` object for the input date and then calculates the difference in hours.
	* Pros:
		+ Possibly faster due to using a more lightweight and optimized library
	* Cons:
		+ Requires creating a new object instance, which might be slower than direct access

**Library Descriptions**

1. **datefns**: `datefns` is a small, lightweight JavaScript library for date manipulation and formatting. It provides various functions for calculating differences, parsing dates, and more.
2. **dayjs**: `dayjs` is a popular JavaScript library for working with dates and times. It offers a wide range of features, including date arithmetic, formatting, and parsing.

**Special JS Feature or Syntax**

None mentioned in this specific benchmark.

**Other Alternatives**

For comparison, other libraries that might be used for date manipulation include:

* Moment.js
* Luxon

These libraries offer similar functionality to `datefns` and `dayjs`, but with different approaches and trade-offs. Moment.js is a widely-used library with a large community, while Luxon is designed to be more lightweight and efficient.

**Considerations**

When choosing a date manipulation library, consider factors such as:

* Performance: How fast does the library need to be for your use case?
* Feature set: What specific features do you require (e.g., formatting, parsing, arithmetic)?
* Library size and overhead: Smaller libraries might be faster but also more prone to errors or lack certain features.
* Community support: A large community can provide valuable resources and help when issues arise.

Ultimately, the choice of library depends on your specific needs and priorities.

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/117.0.0.0 Safari/537.36

Browser/OS: Chrome 117 on Windows

View result in a separate tab

Test name	Executions per second
date-fns	29177.6 Ops/sec
dayjs	132343.9 Ops/sec

Related benchmarks:

date diff (version: 0)

Comparing performance of: date-fns vs dayjs

Created: one year ago by: Guest

Jump to the latest result

date-fns

dayjs

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):