@becquerel/content-negotiator
v0.1.0-alpha.3
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HTTP content negotiation library.
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@becquerel/content-negotiator
HTTP content negotiation library.
Install
$ npm install --save @becquerel/content-negotiator # Or alternately: `yarn add @becquerel/content-negotiator`
Usage
const ContentNegotiator = require('@becquerel/content-negotiator');
let acceptHeader = 'text/plain; q=0.5, text/html, text/x-dvi; q=0.8, text/x-c';
let negotiator = new ContentNegotiator(acceptHeader);
/**
* Use the `.prefer()` method to check if a media type is the prefered type of
* the requester. You can also use "shorthand types" for the following
* predefined types:
*
* {
* atom: 'atom+xml',
* css: 'text/css',
* csv: 'text/csv',
* html: 'text/html',
* javascript: 'application/javascript',
* jcard: 'application/vcard+json',
* json: 'application/json',
* jsonld: 'application/ld+json',
* markdown: 'text/markdown',
* text: 'text/plain',
* vcard: 'text/vcard'
* };
*/
negotiator.prefers('text/html'); // > true
negotiator.prefers('html'); // > true
negotiator.prefers('text/plain'); // > false
/**
* Alternately you can read the `.preferred` property to obtain the requester's
* most desired media type. It returns an instance of the `MediaType` class.
*/
negotiator.preferred; // > MediaType { type: 'text', subtype: 'html', parameters: { q: 1 }, specificity: 2 }
/**
* Also, if you would prefer the textual representation of the preferred media
* type you can simpy call the `MediaType.prototype.toString()` method.
*/
negotiator.preferred; // > 'text/html'
/**
* The `.mediaRange` property contains a quality sorted array of the desired
* media types.
*/
negotiator.mediaRange; // > ['text/html', 'text/x-c', 'text/x-dvi', 'text/plain']
Testing
$ npm test # Or alternately: `yarn test`
Reference
License
The MIT License (Expat). See the license file for details.