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Name	Size	Perms	Modified	Actions
[ .. / .. ]
HISTORY.md	2.56 KB	-rw-r--r--	1985-10-26 08:15:00	Edit Del
LICENSE	1.15 KB	-rw-r--r--	1985-10-26 08:15:00	Edit Del
README.md	5.21 KB	-rw-r--r--	1985-10-26 08:15:00	Edit Del
index.js	2.46 KB	-rw-r--r--	1985-10-26 08:15:00	Edit Del
lib	-	drwxr-xr-x	2025-07-03 08:06:37	Del
package.json	2.22 KB	-rw-r--r--	2025-07-03 08:06:43	Edit Del

Editing: index.js (2.46 KB)

/*!
 * negotiator
 * Copyright(c) 2012 Federico Romero
 * Copyright(c) 2012-2014 Isaac Z. Schlueter
 * Copyright(c) 2015 Douglas Christopher Wilson
 * MIT Licensed
 */

'use strict';

var preferredCharsets = require('./lib/charset')
var preferredEncodings = require('./lib/encoding')
var preferredLanguages = require('./lib/language')
var preferredMediaTypes = require('./lib/mediaType')

/**
 * Module exports.
 * @public
 */

module.exports = Negotiator;
module.exports.Negotiator = Negotiator;

/**
 * Create a Negotiator instance from a request.
 * @param {object} request
 * @public
 */

function Negotiator(request) {
  if (!(this instanceof Negotiator)) {
    return new Negotiator(request);
  }

  this.request = request;
}

Negotiator.prototype.charset = function charset(available) {
  var set = this.charsets(available);
  return set && set[0];
};

Negotiator.prototype.charsets = function charsets(available) {
  return preferredCharsets(this.request.headers['accept-charset'], available);
};

Negotiator.prototype.encoding = function encoding(available, opts) {
  var set = this.encodings(available, opts);
  return set && set[0];
};

Negotiator.prototype.encodings = function encodings(available, options) {
  var opts = options || {};
  return preferredEncodings(this.request.headers['accept-encoding'], available, opts.preferred);
};

Negotiator.prototype.language = function language(available) {
  var set = this.languages(available);
  return set && set[0];
};

Negotiator.prototype.languages = function languages(available) {
  return preferredLanguages(this.request.headers['accept-language'], available);
};

Negotiator.prototype.mediaType = function mediaType(available) {
  var set = this.mediaTypes(available);
  return set && set[0];
};

Negotiator.prototype.mediaTypes = function mediaTypes(available) {
  return preferredMediaTypes(this.request.headers.accept, available);
};

// Backwards compatibility
Negotiator.prototype.preferredCharset = Negotiator.prototype.charset;
Negotiator.prototype.preferredCharsets = Negotiator.prototype.charsets;
Negotiator.prototype.preferredEncoding = Negotiator.prototype.encoding;
Negotiator.prototype.preferredEncodings = Negotiator.prototype.encodings;
Negotiator.prototype.preferredLanguage = Negotiator.prototype.language;
Negotiator.prototype.preferredLanguages = Negotiator.prototype.languages;
Negotiator.prototype.preferredMediaType = Negotiator.prototype.mediaType;
Negotiator.prototype.preferredMediaTypes = Negotiator.prototype.mediaTypes;