Transaction management Question

[hiteshjoshi1]

I am trying to understand how to best implement Transaction management in NestJs but no luck so far.
How does transaction rollback happen when you are inserting in multiple tables and one of the insert succeeds and other one fails.
Example in nestjs-realworld-example-app/src/article/article.service.ts

In create(), if this succeeds

   const newArticle = await this.articleRepository.save(article);

but this fails

  await this.userRepository.save(author);

[lujakob]

This is not about NestJS but about how Typeorm handles transaction. For further info look at the following docs https://github.com/typeorm/typeorm/blob/master/docs/transactions.md