import AcceptLanguageNegotiator from '@chubbyjs/chubbyjs-negotiation/dist/AcceptLanguageNegotiator';

const request = ...withHeader('Accept-Language', 'de,en;q=0.3,en-US;q=0.7');

const negotiator = new AcceptLanguageNegotiator(['en', 'de']);
const value = negotiator.negotiate(request); // NegotiatedValue
value.getValue(); // de
value.getAttributes(); // new Map([['q' => '1.0']])

import AcceptNegotiator from '@chubbyjs/chubbyjs-negotiation/dist/AcceptNegotiator';

const request = ...withHeader('Accept', 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q =0.8');

const negotiator = new AcceptNegotiator(['application/json', 'application/xml', 'application/x-yaml']);
const value = negotiator.negotiate(request); // NegotiatedValue
value.getValue(); // application/xml
value.getAttributes(); // new Map([['q' => '0.9']])

import ContentTypeNegotiator from '@chubbyjs/chubbyjs-negotiation/dist/ContentTypeNegotiator';

const request = ...withHeader('Content-Type', 'application/xml; charset=UTF-8');

const negotiator = new ContentTypeNegotiator(['application/json', 'application/xml', 'application/x-yaml']);
const value = negotiator.negotiate($request); // NegotiatedValue
value->getValue(); // application/xml
value->getAttributes(); // new Map([['charset' => 'UTF-8']])