validateDate property

StreamTransformer<DateTime, DateTime> validateDate

Implementation

final StreamTransformer<DateTime, DateTime> validateDate =
    StreamTransformer<DateTime, DateTime>.fromHandlers(
        handleData: (DateTime value, EventSink<DateTime> sink) {
  if (isValidDate(value)) {
    sink.add(value);
  } else {
    sink.addError(GenericException.withMessage('Date cannot be future date'));
  }
});