file-extension

  
> Get the extension of a given filename or path

Differences to path.extname:

* Treats dotfiles as extension (.eslintrc => eslintrc)
* Treats extensionless files as extension (Makefile => makefile)
* Doesn't include the dot in the extension (package.json => json)
* Returns lowercase by default (LICENCE => licence)

Works in Node.js and the browser. The module's size is currently 267 bytes gzipped.

Installation

#### Node.js
``
$ npm install --save file-extension
`
#### Browser
`html


`

Example

`js
var fileExtension = require('file-extension'); // Skip this in the browser

// Case insensitive
fileExtension('file.zip'); //=> 'zip'
fileExtension('.Dockerfile'); //=> 'dockerfile'
fileExtension('file'); //=> 'file'
fileExtension('.file.tar'); //=> 'tar'

// Or with case preserved
fileExtension('.Vagrantfile', {preserveCase: true}); //=> 'Vagrantfile'
fileExtension('INDEX.HTML', {preserveCase: true}); //=> 'HTML'
`

API

$3

- filename {String} The file name. Required.
- options {Object} Options object.

#### Options
- preserveCase` {Boolean} Whether case should be preserved. Default: false.

© silverwind, distributed under BSD licence