main.ts

import { NestFactory } from '@nestjs/core';
import { AppModule } from './app.module';
import { SwaggerModule, DocumentBuilder } from '@nestjs/swagger';
import { ValidationPipe } from '@nestjs/common';
import * as favicon from 'serve-favicon';
import * as path from 'path';
import { AppLogger } from './app-logger';

async function bootstrap() {
  const app = await NestFactory.create(AppModule, {
    logger: new AppLogger(),
  });

  app.enableCors({ credentials: true, origin: true });

  app.use(favicon(path.join(__dirname, '../favicon.ico')));

  const options = new DocumentBuilder()
    .setBasePath('')
    .setTitle('Email service API')
    .setDescription('Service providing the method to send emails.')
    .setVersion(process.env.npm_package_version)
    .addTag('email')
    .build();
  const document = SwaggerModule.createDocument(app, options);

  SwaggerModule.setup('api-doc', app, document);

  app.useGlobalPipes(new ValidationPipe());

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