flutter_wisetronic/lib/store/reducer/device_id_reducer.dart

import 'package:redux/redux.dart';

import '../actions.dart';

final deviceIdReducer = combineReducers<String>([
  TypedReducer<String, UpdateDeviceId>(_updateDeviceId)
]);

String _updateDeviceId(String deviceId, action) {
  return action.deviceId;
}