media-typer

media-typer

Simple RFC 6838 media type parser.

This module will parse a given media type into it's component parts, like type, subtype, and suffix. A formatter is also provided to put them back together and the two can be combined to normalize media types into a canonical form.

If you are looking to parse the string that represents a media type and it's parameters in HTTP (for example, the Content-Type header), use the content-type module.

Installation

This is a Node.js module available through the npm registry. Installation is done using the npm install command:

$ npm install media-typer

API

var typer = require('media-typer')

typer.parse(string)

var obj = typer.parse('image/svg+xml')

Parse a media 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 type of the media type (always lower case). Example: 'image'

• subtype: The subtype of the media type (always lower case). Example: 'svg'

• suffix: The suffix of the media type (always lower case). Example: 'xml'

If the given type string is invalid, then a TypeError is thrown.

typer.format(obj)

var obj = typer.format({ type: 'image', subtype: 'svg', suffix: 'xml' })

Format an object into a media type string. This will return a string of the mime type for the given object. For the properties of the object, see the documentation for typer.parse(string).

If any of the given object values are invalid, then a TypeError is thrown.

typer.test(string)

var valid = typer.test('image/svg+xml')

Validate a media type string. This will return true is the string is a well- formatted media type, or false otherwise.

License

MIT

Similar packages

Other packages similar to media-typer

content-type

The 'content-type' package is similar to media-typer as it provides utilities for parsing and formatting Content-Type header strings. It differs in that it focuses specifically on the Content-Type header and provides more functionality around charset handling and parameter parsing.

mime-types

The 'mime-types' package is another similar package that allows for looking up the content-type associated with a file extension and vice versa. It provides a larger database of MIME types but does not focus on parsing and formatting of media type strings as media-typer does.

negotiator

The 'negotiator' package is used for content negotiation in HTTP transactions. It can parse Accept headers and determine the best match for a response. While it deals with media types, its primary focus is on the negotiation process rather than just parsing and formatting media types.