Benchmark: date utils test - MeasureThat.net

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/dayjs/1.11.7/dayjs.min.js"></script>
<script src="https://igor.moomers.org/random/datefns.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.4/moment.min.js"></script>

Script Preparation code:

window.ds = "2023-02-19T00:51:53.623839+00:00";

Tests:

moment
moment(window.ds) moment().format("MM-DD-YYYY")
day.js
dayjs(ds) dayjs().format("MM-DD-YYYY")
date-fns
window.datefns.parseISO(window.ds); window.datefns.format(new Date(), "mm-dd-yyyy");

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
moment
day.js
date-fns

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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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 definition and test cases to understand what is being tested.

**Overview**

The benchmark measures the performance of three different date utility libraries: moment.js, day.js, and date-fns. The tests focus on parsing and formatting dates using these libraries.

**Script Preparation Code**

The script preparation code sets up an environment for the benchmark by defining a JavaScript variable `ds` with a specific date string: "2023-02-19T00:51:53.623839+00:00". This date is used in all test cases.

**Html Preparation Code**

The HTML preparation code includes links to external libraries:

1. dayjs (version 1.11.7)
2. moment.js (version 2.29.4)
3. date-fns

These libraries are loaded before the benchmark script runs, ensuring that they are available for use in the test cases.

**Individual Test Cases**

Each test case consists of a single JavaScript expression that uses one of the three date utility libraries to parse and format a date:

1. `moment(window.ds)`: Uses moment.js to parse the date string defined earlier and formats it as "MM-DD-YYYY".
2. `dayjs(ds)`: Uses day.js to parse the same date string and formats it as "MM-DD-YYYY".
3. `window.datefns.parseISO(window.ds); window.datefns.format(new Date(), "mm-dd-yyyy")`: Uses date-fns to parse the date string (using ISO 8601 format) and then formats a new date object using the desired output format.

**Pros and Cons of Each Approach**

Here's a brief summary of the pros and cons of each approach:

1. **Moment.js**
	* Pros: Mature library with a wide range of features, well-documented, and widely adopted.
	* Cons: Can be complex to use, has a steeper learning curve, and might require additional setup for certain use cases.
2. **Day.js**
	* Pros: Lightweight, simple, and easy to use, making it suitable for small projects or prototyping.
	* Cons: Smaller user base compared to moment.js, which can limit its support and documentation resources.
3. **Date-fns**
	* Pros: Focuses on simplicity and ease of use, with a strong emphasis on functional programming principles. It's also designed to be highly performant.
	* Cons: Still relatively new library, might lack the extensive feature set of moment.js or day.js.

**Library Purpose**

Here's a brief overview of each library:

1. **Moment.js**: A popular JavaScript library for working with dates and times, offering a wide range of features such as formatting, parsing, and calculations.
2. **Day.js**: A lightweight alternative to moment.js, designed for simplicity and ease of use. It provides basic date and time functionality while being easy to integrate into projects.
3. **Date-fns**: A modern JavaScript library focused on providing simple, functional, and performant solutions for working with dates and times.

**Special JS Feature or Syntax**

The benchmark uses the `window` object to define a global variable `ds`, which is used as input data for each test case. This approach allows the benchmark to use a specific date string without requiring users to set up their own environment.

In summary, this benchmark compares the performance of three different date utility libraries (moment.js, day.js, and date-fns) in terms of parsing and formatting dates. The results provide insights into the relative speed and efficiency of each library in performing these tasks.

Related benchmarks:

date utils test (version: 0)

Comparing performance of: moment vs day.js vs date-fns

Created: 3 years ago by: Guest

Jump to the latest result

moment

day.js

date-fns

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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