Return Response on all Response functions

[Ionaru]

Currently some Response functions return the Response.
These include response.send(), response.json() and some others.

Why do those functions return Response, but others like response.sendFile() and response.render() don't?

Currently I am (ab)using the Response return of response.send() to make sure my routing functions always return a response and don't get stuck in some function paths.

function myRoute(request: Request, response: Response): Promise<Response> {
    return response.send('A response!'); // Returns Response
}

It would be very useful to me if the rest of the Response functions also return the Response.

[dougwilson]

Currently only the methods that are sync return the object back; the objects that take a callback in order to continue do not return the object, because you'll end up having issues if you chain off of them. You should resume interaction with response within the callback after calling those methods.

[crandmck]

Should we add a note about this to the docs?