Use Fastify Mercurius and GraphQL contracts

src/index.ts

@@ -1,22 +1,21 @@
-import express from 'express'
-import cors from 'cors'
-import { ApolloServer } from '@apollo/server'
-import { expressMiddleware } from '@apollo/server/express4'
-import { typeDefs, resolvers } from './schema.js'
+import Fastify from "fastify";
+import cors from "@fastify/cors";
+import mercurius from "mercurius";
+import { typeDefs, resolvers } from "./schema.js";
 
-const PORT = parseInt(process.env.PORT || '8000', 10)
+const PORT = Number.parseInt(process.env.PORT || "8000", 10);
 
-const app = express()
-app.use(cors({ origin: ['https://optovia.ru'], credentials: true }))
+const app = Fastify();
+await app.register(cors, { origin: ["https://optovia.ru"], credentials: true });
+await app.register(mercurius, {
+  schema: typeDefs,
+  resolvers,
+  path: "/graphql/public",
+  graphiql: true,
+});
 
-const server = new ApolloServer({ typeDefs, resolvers, introspection: true })
-await server.start()
+app.get("/health", async () => ({ status: "ok" }));
 
-app.use('/graphql/public', express.json(), expressMiddleware(server) as unknown as express.RequestHandler)
-
-app.get('/health', (_, res) => { res.json({ status: 'ok' }) })
-
-app.listen(PORT, '0.0.0.0', () => {
-  console.log(`Geo server ready on port ${PORT}`)
-  console.log(`  /graphql/public  - public (no auth)`)
-})
+await app.listen({ port: PORT, host: "0.0.0.0" });
+console.log(`Geo server ready on port ${PORT}`);
+console.log(`  /graphql/public  - public (no auth)`);