Where can I find business logic sources in Nodejs?

Question

Node.js

There are a lot of documentation and tutorials on nodejs and libraries. But they usually light up the "hello world" level. I would like to study the source codes of some relatively large application - how routing takes place there, business logic, interaction with the database, what modules are used.
Why do I need this: I do not work as a programmer, I write code mainly for fun. Accordingly, I can not evaluate my code. If with the same php it is quite simple - there are many open cms to study, then for node I have not seen this.

Answer 1

If you dig here , you can find many examples.

Answer 2

Node.js is just a platform. To go further, you need to decide on the framework, database, etc.