bloc library Null safety

Classes

Bloc<Event, State>

Takes a Stream of Events as input and transforms them into a Stream of States as output.

BlocBase<State>

An interface for the core functionality implemented by both Bloc and Cubit.

BlocObserver

An interface for observing the behavior of Bloc instances.

Change<State>

A Change represents the change from one State to another. A Change consists of the currentState and nextState.

Cubit<State>

A Cubit is similar to Bloc but has no notion of events and relies on methods to emit new states. [...]

Transition<Event, State>

A Transition is the change from one state to another. Consists of the currentState, an event, and the nextState.

Typedefs

TransitionFunction<Event, State>(Event) → Stream<Transition<Event, State>>

Signature for a mapper function which takes an Event as input and outputs a Stream of Transition objects.

Exceptions / Errors

BlocUnhandledErrorException

Exception thrown when an unhandled error occurs within a bloc. [...]