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Dayjs Date-fns format benchmark
(version: 0)
Dayjs Date-fns format benchmark
Comparing performance of:
Date-fns vs Dayjs
Created:
2 years ago
by:
Guest
Go to the latest result
HTML Preparation code:
<script src="https://unpkg.com/dayjs@1.11.9/dayjs.min.js"></script> <script src="https://igor.moomers.org/random/datefns.js"></script>
Script Preparation code:
window.ds = "2020-02-19T00:51:53.623839+00:00";
Tests:
Date-fns
window.datefns.format(window.datefns.parseISO(window.ds), "yyyy-mm-dd")
Dayjs
dayjs(ds).format("YYYY-MM-DD")
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
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 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36
Browser/OS:
Chrome 138 on Mac OS X 10.15.7
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=612854" width="100%" height="500px"></iframe>
Date-fns
464K/s
Dayjs
382K/s
View exact numbers
Test name
Executions per second
✓
Date-fns
463,947 Ops/sec
Dayjs
381,725 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'll break down the provided benchmark JSON and explain what's being tested, compared, and considered. **Benchmark Overview** The benchmark compares the performance of two date formatting libraries: Dayjs (formerly known as Moment.js) and Date-fns. The test case focuses on parsing an ISO-formatted string and then formatting it into a specific format using each library. **Library Description** * **Dayjs**: A popular JavaScript date and time library that provides a simple, intuitive API for working with dates and times. It's known for its fast performance and ease of use. * **Date-fns**: A lightweight, pure-JavaScript date utility library that provides a small set of functions for common date operations. **Options Compared** The benchmark compares two different approaches to formatting the parsed ISO-formatted string: 1. **Dayjs**: Uses the `format()` method to format the parsed date into a specific format (`"YYYY-MM-DD"`). 2. **Date-fns**: Uses the `format()` function from Date-fns to achieve the same result. **Pros and Cons** * **Dayjs**: + Pros: Fast performance, easy-to-use API. + Cons: Can be slower for certain edge cases, has more dependencies than Date-fns. * **Date-fns**: + Pros: Lightweight, pure-JavaScript, fast performance. + Cons: Smaller API, might require more manual configuration. **Special JS Feature or Syntax** None mentioned in this specific benchmark. However, it's worth noting that both libraries have their own ways of handling edge cases and formatting options, which can affect performance. **Other Alternatives** If you're considering using a different date formatting library, here are some alternatives: * **Moment.js**: A popular JavaScript date and time library with a more extensive feature set than Dayjs. * **Luxon**: Another modern JavaScript date and time library that provides a robust set of features and is known for its performance. * **DateParser**: A lightweight, pure-JavaScript library specifically designed for parsing dates in various formats. **Benchmark Preparation Code** The provided `Html Preparation Code` includes two script tags: 1. One tag loads the Dayjs library (`dayjs.min.js`). 2. Another tag loads a custom `datefns.js` file from a third-party repository, which provides the Date-fns implementation for this benchmark. The `Script Preparation Code` sets up a variable `ds` with a sample ISO-formatted string. **Individual Test Cases** Each test case focuses on formatting a single date using either Dayjs or Date-fns. The specific options used in each test case are: 1. **Dayjs**: `window.datefns.format(window.datefns.parseISO(window.ds), "yyyy-mm-dd")` 2. **Date-fns**: `dayjs(ds).format("YYYY-MM-DD")` These test cases aim to compare the performance of these two libraries in formatting dates using a specific format.
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