NestJS is a cool framework for write microservices, the new version 5.0.0 is awesome and faster. The HMR with Webpack 4 provides a better performance and restart your project very fast.
I created a multiple Grpc microservices in production and it's works very, very good.
Write API's with this framework is so fast.
No guidelines for code
Nest looks good and easy to adapt by the experts, for the novice it is somehow hard to learn, as it is heavily inspired by Angular-5.
It's my first-sight review, It would be super cool also after developing a whole application.
Nodejs is very simple, why nest is making it complex