aman-backend/src/main.ts

import { NestFactory } from '@nestjs/core';
import { ValidationPipe } from '@nestjs/common';
import { SwaggerModule, DocumentBuilder } from '@nestjs/swagger';
import helmet from 'helmet';
import { AppModule } from './app.module';

async function bootstrap() {
  const app = await NestFactory.create(AppModule);

  app.use(helmet());
  app.enableCors();
  app.useGlobalPipes(new ValidationPipe({ whitelist: true }));

  const config = new DocumentBuilder()
    .setTitle('Arrival MANager')
    .setDescription('The AMAN Rest-API to plan arrival sequences')
    .setVersion('0.1.0')
    .addTag('aman')
    .build();
  const document = SwaggerModule.createDocument(app, config);
  SwaggerModule.setup('api', app, document);

  await app.listen(3000);
}
bootstrap();