Previously

Previously I meet Decorate my implementation in controllers/xpto is something like this:

Old controlelrs/user.js without decorate

This is an extracted part of my controllers/user.js, the method GET will return the information about an single user.

But you can see in this case I need to import Boom and reply then every time I need to dispatch an error for User not found. And in every new controller import Boom again.

You can just make boom globally, and then just call where you want importing Boom once! — Some newbie Dev

Globally is not an options!