Morgan

Morgan is middleware that is used to log HTTP requests to the Express instance.

app.use(morgan("dev"));

With Morgan in place, every time we run a request it will be logged on the console that is running our Node application, e.g:

GET /api/courses 200 95 - 1.774 ms

This uses the tiny default which logs the bare minimum giving us: request type; endpoint; response code; and time to execute. But there are more verbose settings.

It defaults to logging on the console but can also be configured to write to a log file.