feature(@nestjs/core) better type checking for fastify adapter

.gitignore

@@ -27,4 +27,4 @@ yarn-error.log
 /integration
 /coverage
 /.nyc_output
-build/config\.gypi
+build/config\.gypi

examples/01-cats-app/src/main.ts

@@ -5,7 +5,7 @@ import { FastifyAdapter } from '@nestjs/core/adapters/fastify-adapter';
 import * as fastify from 'fastify';
 
 async function bootstrap() {
-  const app = await NestFactory.create(ApplicationModule, new FastifyAdapter(fastify()));
+  const app = await NestFactory.create(ApplicationModule);
   app.useGlobalPipes(new ValidationPipe());
   await app.listen(3000);
 }