Lesson 7.2
Router.use and request state
The three bands in a per-request stack, router-scoped middleware storage, and a req.user field for middleware state.
What you will build
- Name the three bands of a composed stack and say which registration call feeds each.
- Add Router.use and a _middleware list that only runs when the router is mounted.
- Add the req.user field at its fixed constructor position and explain why fields are declared during construction.