# is-github-url [![Build Status](https://travis-ci.org/alferov/is-github-url.svg?branch=master)](https://travis-ci.org/alferov/is-github-url)

>  Check if a passed string is a valid GitHub URL

Unlike [is-git-url](https://github.com/jonschlinkert/is-git-url), is-github-url is a domain-specific validator. It returns `true` if passed URL is a part of `github.com` domain only.

## Installation
```
$ npm install is-github-url --save
```

## Usage
```js
var isGithubUrl = require('is-github-url');

// Valid examples
isGithubUrl('https://github.com/facebook');
 // => true
isGithubUrl('https://github.com/facebook/react');
 // => true
isGithubUrl('https://github.com/facebook/react/releases/tag/v0.14.0');
// => true
isGithubUrl('git@github.com:facebook/react.git');
// => true
isGithubUrl('git://github.com/facebook/react.git#gh-pages');
// => true

// Invalid examples
isGithubUrl('https://google.com');
 // => false
isGithubUrl('unknown://github.com');
// => false
isGithubUrl('http://facebook.github.io/');
// => false

// Repository mode can be used to check whether a passed URL
// is a valid repository URL
isGithubUrl('https://github.com/facebook/react', { repository: true });
// => true
isGithubUrl('https://github.com/facebook', { repository: true });
// => false
isGithubUrl('https://github.com/facebook/react/releases/tag/v0.14.0', {
  repository: true
});
// => false

// Strict mode is used to validate URLs before cloning
// Strict mode turns on automatically if URL contains git protocol
isGithubUrl('https://github.com/facebook/react.git', { strict: true });
// => true
isGithubUrl('https://github.com/facebook/react', { strict: true });
// => false
```

## API
### `isGithubUrl(url, [options])`
Check if a passed string is a valid GitHub URL

#### Params
- **String** `url`: A string to be validated
- **Object** `options`: An object containing the following fields:
  - `strict` (Boolean): Match only URLs ending with .git
  - `repository` (Boolean): Match only valid GitHub repo URLs

## License
MIT © [Philipp Alferov](https://github.com/alferov)