graphql-http

graphql-http (opens in a new tab) is the official reference implementation of the GraphQL over HTTP Protocol (opens in a new tab). It is simple, pluggable and zero-dependency server and client.

Installation

npm i graphql graphql-http

Start

Provide the database GraphQL schema.

examples/server/graphql-http/index.ts

import { createServer, IncomingMessage } from 'node:http';
import { createHandler } from 'graphql-http/lib/use/http';
import { sessionIdFromCookie, sessionIdToCookie } from '@server/common';
import { buildSchema, createContext } from '@database/mongodb/schema';
 
const SESSION_REQUEST_TO_ID_MAP = new WeakMap<IncomingMessage, string>();
 
const handler = createHandler({
  schema: await buildSchema(),
  context: (req) =>
    createContext({
      sessionId: sessionIdFromCookie(req.raw.headers.cookie),
      setSessionId(sessionId) {
        SESSION_REQUEST_TO_ID_MAP.set(req.raw, sessionId);
      },
    }),
});
 
const server = createServer((req, res) => {
  if (req.url?.startsWith('/graphql')) {
    const sessionId = SESSION_REQUEST_TO_ID_MAP.get(req);
    if (sessionId) {
      res.setHeader('set-cookie', sessionIdToCookie(sessionId));
    }
    handler(req, res);
  } else {
    res.writeHead(404).end();
  }
});
 
server.listen(50005);
console.info('Server is running on http://localhost:50005/graphql');

And run it:

npx tsx index.ts

Visit http://localhost:50005/graphql (opens in a new tab) to see Yoga in action.

GraphQL Yoga Introduction