nextSubstate<Substate> method

Stream<Substate> nextSubstate<Substate>(
  1. StateMapper<State, StateBuilder, Substate> mapper
)

nextSubstate is a stream which has a payload of the next subState value, rather than the SubstateChange event

Implementation

Stream<Substate> nextSubstate<Substate>(
  StateMapper<State, StateBuilder, Substate> mapper,
) =>
    substateStream(mapper)
        .map((SubstateChange<Substate> change) => change.next);