build method

@nonVirtual @override BaseState<T> build(Arg arg)

do not override in child classes, use prepareForBuild instead

Implementation

@nonVirtual
@override
BaseState<T> build(Arg arg) {
  initWithRefAndGetOrUpdateState(
    ref,
    ({newState}) {
      if (newState != null) state = newState;
      return state;
    },
  );
  prepareForBuild(arg);
  return const BaseState.initial();
}