text: # content-type
  
  [![NPM Version][npm-image]][npm-url]
  [![NPM Downloads][downloads-image]][downloads-url]
  [![Node.js Version][node-version-image]][node-version-url]
  [![Build Status][travis-image]][travis-url]
  [![Test Coverage][coveralls-image]][coveralls-url]
  
  Create and parse HTTP Content-Type header according to RFC 7231
  
  ## Installation
  
  ```sh
  $ npm install content-type
  ```
  
  ## API
  
  ```js
  var contentType = require('content-type')
  ```
  
  ### contentType.parse(string)
  
  ```js
  var obj = contentType.parse('image/svg+xml; charset=utf-8')
  ```
  
  Parse a content type string. This will return an object with the following
  properties (examples are shown for the string `'image/svg+xml; charset=utf-8'`):
  
   - `type`: The media type (the type and subtype, always lower case).
     Example: `'image/svg+xml'`
  
   - `parameters`: An object of the parameters in the media type (name of parameter
     always lower case). Example: `{charset: 'utf-8'}`
  
  Throws a `TypeError` if the string is missing or invalid.
  
  ### contentType.parse(req)
  
  ```js
  var obj = contentType.parse(req)
  ```
  
  Parse the `content-type` header from the given `req`. Short-cut for
  `contentType.parse(req.headers['content-type'])`.
  
  Throws a `TypeError` if the `Content-Type` header is missing or invalid.
  
  ### contentType.parse(res)
  
  ```js
  var obj = contentType.parse(res)
  ```
  
  Parse the `content-type` header set on the given `res`. Short-cut for
  `contentType.parse(res.getHeader('content-type'))`.
  
  Throws a `TypeError` if the `Content-Type` header is missing or invalid.
  
  ### contentType.format(obj)
  
  ```js
  var str = contentType.format({type: 'image/svg+xml'})
  ```
  
  Format an object into a content type string. This will return a string of the
  content type for the given object with the following properties (examples are
  shown that produce the string `'image/svg+xml; charset=utf-8'`):
  
   - `type`: The media type (will be lower-cased). Example: `'image/svg+xml'`
  
   - `parameters`: An object of the parameters in the media type (name of the
     parameter will be lower-cased). Example: `{charset: 'utf-8'}`
  
  Throws a `TypeError` if the object contains an invalid type or parameter names.
  
  ## License
  
  [MIT](LICENSE)
  
  [npm-image]: https://img.shields.io/npm/v/content-type.svg
  [npm-url]: https://npmjs.org/package/content-type
  [node-version-image]: https://img.shields.io/node/v/content-type.svg
  [node-version-url]: http://nodejs.org/download/
  [travis-image]: https://img.shields.io/travis/jshttp/content-type/master.svg
  [travis-url]: https://travis-ci.org/jshttp/content-type
  [coveralls-image]: https://img.shields.io/coveralls/jshttp/content-type/master.svg
  [coveralls-url]: https://coveralls.io/r/jshttp/content-type
  [downloads-image]: https://img.shields.io/npm/dm/content-type.svg
  [downloads-url]: https://npmjs.org/package/content-type
  