if (inputState.withMutations) {
      return inputState.withMutations(function (temporaryState) {
        reducerKeys.forEach(function (reducerName) {
          var reducer = reducers[reducerName];
          var currentDomainState = temporaryState.get(reducerName);
          var nextDomainState = reducer(currentDomainState, action);

          (0, _utilities.validateNextState)(nextDomainState, reducerName, action);

          temporaryState.set(reducerName, nextDomainState);
        });
      });
    } else {
      reducerKeys.forEach(function (reducerName) {
        var reducer = reducers[reducerName];
        var currentDomainState = inputState[reducerName];
        var nextDomainState = reducer(currentDomainState, action);

        (0, _utilities.validateNextState)(nextDomainState, reducerName, action);

        inputState[reducerName] = nextDomainState;
      });
      return inputState;
    }

import { combineReducers } from 'redux';
import { combineReducers as combineReducersImmutable } from 'redux-immutable';

export default function createReducer(injectedReducers) {
  const immutableReducer = combineReducersImmutable({
    route: routeReducer,
    locale: localeReducer(),
    form: formReducer,
    ...injectedReducers,
  });
  const nonmutableReducer = combineReducers({
    admin: adminReducer,
  });
  return combineReducersImmutable({
    admin: adminReducer,
    route: routeReducer,
    locale: localeReducer(),
    form: formReducer,
    ...injectedReducers,
  }, () => {
    return {
      ...immutableReducer(undefined, { type: '' }),
      ...nonmutableReducer(undefined, { type: '' })
    };
  })
}