@types/accepts

Content Type Negotiation

This feature allows the server to negotiate and determine the most appropriate content type to respond with, based on the client's Accept header. The code sample demonstrates how to use the 'accepts' library to select between 'json' and 'html' formats.

import accepts from 'accepts';
import http from 'http';

http.createServer((req, res) => {
  const accept = accepts(req);
  const preferredType = accept.type(['json', 'html']);
  res.setHeader('Content-Type', preferredType);
  res.end(`Content type set to ${preferredType}`);
}).listen(3000);

Encoding Negotiation

This feature enables the server to select the best encoding method for the response based on the client's Accept-Encoding header. The code sample shows how to determine whether to use 'gzip' or 'deflate' encoding.

import accepts from 'accepts';
import http from 'http';

http.createServer((req, res) => {
  const accept = accepts(req);
  const preferredEncoding = accept.encoding(['gzip', 'deflate']);
  res.setHeader('Content-Encoding', preferredEncoding);
  res.end(`Content encoding set to ${preferredEncoding}`);
}).listen(3000);

Language Negotiation

This feature helps in determining the preferred language for the response content based on the client's Accept-Language header. The code sample illustrates how to choose between English ('en') and Spanish ('es').

import accepts from 'accepts';
import http from 'http';

http.createServer((req, res) => {
  const accept = accepts(req);
  const preferredLanguage = accept.language(['en', 'es']);
  res.setHeader('Content-Language', preferredLanguage);
  res.end(`Content language set to ${preferredLanguage}`);
}).listen(3000);