Начальная настройка и установка зависимостей.

src/app.controller.ts

@@ -0,0 +1,12 @@
+import { Controller, Get } from "@nestjs/common";
+import { AppService } from "./app.service";
+
+@Controller()
+export class AppController {
+	constructor(private readonly appService: AppService) {}
+
+	@Get()
+	getHello(): string {
+		return this.appService.getHello();
+	}
+}