Generate Swagger Documentation from Nest API

$ npm install --save @nestjs/swagger

const config = new DocumentBuilder()
    .setTitle(title)
    .setDescription(description)
    .setVersion(version)
    .build();
  const document = SwaggerModule.createDocument(app, config);
  SwaggerModule.setup('api', app, document);
  
  //Swagger Doc is available at: http://localhost:${port}/api