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# is-extglob [](http://badge.fury.io/js/is-extglob) [](https://travis-ci.org/jonschlinkert/is-extglob)
> Returns true if a string has an extglob.
## Install with [npm](npmjs.org)
```bash
npm i is-extglob --save
```
## Usage
```js
var isExtglob = require('is-extglob');
```
**True**
```js
isExtglob('?(abc)');
isExtglob('@(abc)');
isExtglob('!(abc)');
isExtglob('*(abc)');
isExtglob('+(abc)');
```
**False**
Everything else...
```js
isExtglob('foo.js');
isExtglob('!foo.js');
isExtglob('*.js');
isExtglob('**/abc.js');
isExtglob('abc/*.js');
isExtglob('abc/(aaa|bbb).js');
isExtglob('abc/[a-z].js');
isExtglob('abc/{a,b}.js');
isExtglob('abc/?.js');
isExtglob('abc.js');
isExtglob('abc/def/ghi.js');
```
## Related
* [extglob](https://github.com/jonschlinkert/extglob): Extended globs. extglobs add the expressive power of regular expressions to glob patterns.
* [micromatch](https://github.com/jonschlinkert/micromatch): Glob matching for javascript/node.js. A faster alternative to minimatch (10-45x faster on avg), with all the features you're used to using in your Grunt and gulp tasks.
* [parse-glob](https://github.com/jonschlinkert/parse-glob): Parse a glob pattern into an object of tokens.
## Run tests
Install dev dependencies.
```bash
npm i -d && npm test
```
## Contributing
Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](https://github.com/jonschlinkert/is-extglob/issues)
## Author
**Jon Schlinkert**
+ [github/jonschlinkert](https://github.com/jonschlinkert)
+ [twitter/jonschlinkert](http://twitter.com/jonschlinkert)
## License
Copyright (c) 2015 Jon Schlinkert
Released under the MIT license
***
_This file was generated by [verb-cli](https://github.com/assemble/verb-cli) on March 06, 2015._
Version data entries
44 entries across 41 versions & 15 rubygems