Debuggin graphql & mercurius

package.json

@@ -22,7 +22,13 @@
   "dependencies": {
     "@nestjs/common": "^11.0.1",
     "@nestjs/core": "^11.0.1",
-    "@nestjs/platform-express": "^11.0.1",
+    "@nestjs/graphql": "^13.2.3",
+    "@nestjs/mercurius": "^13.2.3",
+    "@nestjs/platform-fastify": "^11.1.12",
+    "fastify": "^5.7.2",
+    "graphiql": "^5.2.2",
+    "graphql": "^16.12.0",
+    "mercurius": "^16.7.0",
     "reflect-metadata": "^0.2.2",
     "rxjs": "^7.8.1"
   },
@@ -32,7 +38,6 @@
     "@nestjs/cli": "^11.0.0",
     "@nestjs/schematics": "^11.0.0",
     "@nestjs/testing": "^11.0.1",
-    "@types/express": "^5.0.0",
     "@types/jest": "^30.0.0",
     "@types/node": "^22.10.7",
     "@types/supertest": "^6.0.2",

src/app.module.ts

@@ -1,10 +1,21 @@
 import { Module } from '@nestjs/common';
 import { AppController } from './app.controller';
 import { AppService } from './app.service';
+import { GraphQLModule } from '@nestjs/graphql';
+import { MercuriusDriver, MercuriusDriverConfig } from '@nestjs/mercurius';
+import { HelloResolver } from './hello.resolver';
 
 @Module({
-  imports: [],
+	imports: [
+		GraphQLModule.forRoot<MercuriusDriverConfig>({
+			driver: MercuriusDriver,
+			path: '/api/graphql',
+			graphiql: true,
+			autoSchemaFile: true
+		} as MercuriusDriverConfig),
+	],
   controllers: [AppController],
-  providers: [AppService],
+  providers: [AppService,HelloResolver],
+  
 })
 export class AppModule {}

src/hello.resolver.ts

@@ -0,0 +1,10 @@
+import { Resolver, Query } from '@nestjs/graphql';
+
+@Resolver()
+export class HelloResolver {
+
+  @Query(() => String)
+  hello(): string {
+    return 'hello world';
+  }
+}

src/main.ts

@@ -1,8 +1,9 @@
 import { NestFactory } from '@nestjs/core';
 import { AppModule } from './app.module';
+import { NestFastifyApplication, FastifyAdapter } from '@nestjs/platform-fastify';
 
 async function bootstrap() {
-  const app = await NestFactory.create(AppModule);
+  const app = await NestFactory.create<NestFastifyApplication>(AppModule, new FastifyAdapter());
   await app.listen(process.env.PORT ?? 3000);
 }
 bootstrap();