maestro/src/main.ts

import { NestFactory } from '@nestjs/core';
import { DocumentBuilder, SwaggerModule } from '@nestjs/swagger';
import { writeFileSync } from 'fs';
import { AppModule } from './app.module';
require("dotenv").config();

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

  const config = new DocumentBuilder()
  .setTitle('Maestro Grpc Documentation')
  .setDescription('Documentation for Maestro gateway')
  .setVersion('1.0')
  .addBearerAuth()
  .build();

  const document = SwaggerModule.createDocument(app, config);
  writeFileSync('./swagger.json', JSON.stringify(document));
  SwaggerModule.setup('api', app, document);


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