http_controller_handler library

Classes

ControllerArg: One parameter of a controller.
ControllerPlan: How to call one controller: what goes in each parameter.
ControllerTypes: Reads the parameter types of a function from its runtime type, like (DoxRequest, int) => Future<User>.
RouteParamBinder: One route param that a binder turns into a value before the controller runs.

asResponse(dynamic value) → DoxResponse: value as a DoxResponse. An http exception becomes its JSON body with its status, so a middleware can still change the status.
resetNullMiddlewareWarning() → void: only for tests. Do not call it in app code. Read APP_ENV again on the next null
runMiddlewareAndController(DoxRequest doxReq) → FutureOr: Run middleware and controllers. It stays sync while every step gives a plain value, so a simple route needs no Future. At the first Future it waits, then goes on with the next item.
warnNullMiddleware(Object middleware, RouteData route) → void: in development (APP_ENV is development or local), write a warning once per middleware that gives null. null ends the request with an empty 200, and the controller never runs. Most of the time the middleware forgot return req. Nothing else changes.