Ah thanks for clarifying. Generating schemas and APIs from @annotations / @decorators is a well established technique. How does that remove four layers from the tech stack?
Any Node.js environment can run the backend. As for the database, Liaison supports only MongoDB for now, but more databases are expected to be supported in the future.
- The frontend is "inherited" from the backend so there is no need to build an API server and an API client.
- The database is abstracted away by an ORM.
- The user interface can be encapsulated into the domain model.
If you are interested, you can read this article for more details: https://dev.to/mvila/full-stack-development-should-be-easier...