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https://github.com/ultirequiem/leap-year
❓ Check if a year is a leap year
https://github.com/ultirequiem/leap-year
deno javascript leap-year leap-year-check leap-year-or-not nodejs typescript
Last synced: about 21 hours ago
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❓ Check if a year is a leap year
- Host: GitHub
- URL: https://github.com/ultirequiem/leap-year
- Owner: UltiRequiem
- Created: 2021-07-22T03:05:36.000Z (about 3 years ago)
- Default Branch: main
- Last Pushed: 2024-05-01T00:16:36.000Z (5 months ago)
- Last Synced: 2024-09-20T12:23:37.285Z (5 days ago)
- Topics: deno, javascript, leap-year, leap-year-check, leap-year-or-not, nodejs, typescript
- Language: TypeScript
- Homepage: https://leap-year.js.org
- Size: 211 KB
- Stars: 8
- Watchers: 2
- Forks: 3
- Open Issues: 1
-
Metadata Files:
- Readme: readme.md
- License: license
Awesome Lists containing this project
README
# leap-year
[](https://codecov.io/gh/ultirequiem/leap-year)
[](https://doc.deno.land/https/deno.land/x/leap_year/mod.ts)
Check if a year is a [leap year](https://en.wikipedia.org/wiki/Leap_year),
that's a calendar year that contains an additional day added to keep the
calendar year synchronized with the astronomical year or seasonal year.
## Usage
### [Deno 🦕](https://deno.land/x/leap_year)
```javascript
import { isLeapYear } from "https://deno.land/x/leap_year/mod.ts";
isLeapYear(2014); //=> false
isLeapYear(2016); //=> true
isLeapYear("6 October 2006 00:07:00 GMT"); //=> false
isLeapYear("2000"); //=> false
isLeapYear(new Date(2016, 1, 1)); //=> true
isLeapYear("13 December 400 00:07:00 GMT", true); //=> { year: 400, result: true }
```
### [Node.js 🐢🚀](https://www.npmjs.com/package/@ultirequiem/leap-year)
```typescript
import { isLeapYear } from "@ultirequiem/leap-year";
```
### [Browser 🌐](https://developer.mozilla.org/en-US/docs/Glossary/Browser)
You can use any [CDN](https://en.wikipedia.org/wiki/Content_delivery_network) 🔥
Eg. [ESM](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules)
▶ [SkyPack](https://cdn.skypack.dev/@ultirequiem/leap-year) _/_
[script tag](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/script) ▶
[JSDelivr](https://cdn.jsdelivr.net/npm/@ultirequiem/leap-year).
The API is the same on all this platforms.
## API
[Autogenerated Documentation](https://doc.deno.land/https://deno.land/x/leap_year/mod.ts)
🚀
## CLI Tool
Was done mainly as usage example.
### Install
- Node.js 🦍
```sh
npm install -g @ultirequiem/leap-year
```
- Deno 🦕
```sh
deno install https://deno.land/x/leap_year/leap-year.ts
```
### Usage
```sh
leap-year "13 October 2020 00:07:00 GMT" 400 345
true
true
false
```
Or with the verbose flag 👇
```sh
leap-year "13 October 2020 00:07:00 GMT" 400 345 --verbose # -v
2020 is a leap year.
400 is a leap year.
345 is not a leap year.
```
## Related
- [leap_year_utils](https://github.com/UltiRequiem/leap_year_utils): Utilities
around this package.
- [parse_datelike](https://github.com/UltiRequiem/parse_datelike): Parse a
number/string/date to a number/string/date.
- [leap-year-api](https://github.com/UltiRequiem/leap-year-api): A REST API to
know if a year is leap or not.
## Support
Open an Issue, I will check it a soon as possible 👀
If you want to hurry me up a bit
[send me a tweet](https://twitter.com/UltiRequiem) 😆
Consider [supporting me on Patreon](https://patreon.com/UltiRequiem) if you like
my work 🙏
Don't forget to star the repo ⭐
## Versioning
We use [Semantic Versioning](http://semver.org). For the versions available, see
the [tags](https://github.com/UltiRequiem/leap-year/tags) 🏷️
## Licence
Licensed under the MIT License 📄