https://github.com/wooorm/is-alphabetical
Check if a character is alphabetical
https://github.com/wooorm/is-alphabetical
alphabetical character
Last synced: about 2 months ago
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Check if a character is alphabetical
- Host: GitHub
- URL: https://github.com/wooorm/is-alphabetical
- Owner: wooorm
- License: mit
- Created: 2016-07-11T20:17:20.000Z (almost 9 years ago)
- Default Branch: main
- Last Pushed: 2022-11-23T11:26:08.000Z (over 2 years ago)
- Last Synced: 2025-01-15T02:22:04.523Z (5 months ago)
- Topics: alphabetical, character
- Language: JavaScript
- Homepage:
- Size: 51.8 KB
- Stars: 4
- Watchers: 3
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: readme.md
- Funding: funding.yml
- License: license
Awesome Lists containing this project
README
# is-alphabetical
[![Build][build-badge]][build]
[![Coverage][coverage-badge]][coverage]
[![Downloads][downloads-badge]][downloads]
[![Size][size-badge]][size]
Check if a character is alphabetical.
## Contents
* [What is this?](#what-is-this)
* [When should I use this?](#when-should-i-use-this)
* [Install](#install)
* [Use](#use)
* [API](#api)
* [`isAlphabetical(value)`](#isalphabeticalvalue)
* [Types](#types)
* [Compatibility](#compatibility)
* [Security](#security)
* [Related](#related)
* [Contribute](#contribute)
* [License](#license)
## What is this?
This is a function that checks if a given character is ASCII alphabetical:
matching `[a-z]`, case insensitive.
## When should I use this?
Not often, as it’s relatively simple to do yourself.
This package exists because it’s needed in several related packages, at which
point it becomes useful to defer to one shared function.
## Install
This package is [ESM only][esm].
In Node.js (version 14.14+, 16.0+), install with [npm][]:
```sh
npm install is-alphabetical
```
In Deno with [`esm.sh`][esmsh]:
```js
import {isAlphabetical} from 'https://esm.sh/is-alphabetical@2'
```
In browsers with [`esm.sh`][esmsh]:
```html
import {isAlphabetical} from 'https://esm.sh/is-alphabetical@2?bundle'
```
## Use
```js
import {isAlphabetical} from 'is-alphabetical'
isAlphabetical('a') // => true
isAlphabetical('B') // => true
isAlphabetical('0') // => false
isAlphabetical('💩') // => false
```
## API
This package exports the following identifier: `isAlphabetical`.
There is no default export.
### `isAlphabetical(value)`
Check if the given code point (`number`), or the code point at the first index
(`string`), is alphabetical.
## Types
This package is fully typed with [TypeScript][].
It exports no additional types.
## Compatibility
This package is at least compatible with all maintained versions of Node.js.
As of now, that is Node.js 14.14+ and 16.0+.
It also works in Deno and modern browsers.
## Security
This package is safe.
## Related
* [`wooorm/is-decimal`](https://github.com/wooorm/is-decimal)
* [`wooorm/is-hexadecimal`](https://github.com/wooorm/is-hexadecimal)
* [`wooorm/is-alphanumerical`](https://github.com/wooorm/is-alphanumerical)
* [`wooorm/is-whitespace-character`](https://github.com/wooorm/is-whitespace-character)
* [`wooorm/is-word-character`](https://github.com/wooorm/is-word-character)
## Contribute
Yes please!
See [How to Contribute to Open Source][contribute].
## License
[MIT][license] © [Titus Wormer][author]
[build-badge]: https://github.com/wooorm/is-alphabetical/workflows/main/badge.svg
[build]: https://github.com/wooorm/is-alphabetical/actions
[coverage-badge]: https://img.shields.io/codecov/c/github/wooorm/is-alphabetical.svg
[coverage]: https://codecov.io/github/wooorm/is-alphabetical
[downloads-badge]: https://img.shields.io/npm/dm/is-alphabetical.svg
[downloads]: https://www.npmjs.com/package/is-alphabetical
[size-badge]: https://img.shields.io/bundlephobia/minzip/is-alphabetical.svg
[size]: https://bundlephobia.com/result?p=is-alphabetical
[npm]: https://docs.npmjs.com/cli/install
[esmsh]: https://esm.sh
[license]: license
[author]: https://wooorm.com
[esm]: https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c
[typescript]: https://www.typescriptlang.org
[contribute]: https://opensource.guide/how-to-contribute/