A class which registers middleware (via .use()) and then processes inbound requests against that middleware (via .listen()).

Provides context about the current request and response to middleware functions.

An interface which allows setting and accessing cookies related to both the current request and response.

A class which provides an interface to access the fields of a multipart/form-data body.

An interface which provides information about the current request.

An interface to control what response will be sent when the middleware finishes processing the request.

An interface for registering middleware that will run when certain HTTP methods and paths are requested, as well as provides a way to parameterize parts of the requested path.

HTTP status codes

Asynchronously fulfill a response with a file from the local file system.

Middleware are functions which are chained together to deal with requests.