为什么我的redux状态返回为“ undefined”

Question

我正在构建一个React / Redux应用程序。设置我的商店后，状态恢复为“未定义”。商店中的初始状态为空，但减速器均携带初始状态。 react开发工具可以工作，但状态不会改变。

// App.js

function App() {
  return (
    <Provider store={store}>
      <Router>
        <div>
          <Navbar />
          <Switch>
            <Route exact path='/' component={Home} />
            <Route exact path='/subscriptions' component={Subscriptions} />
            <Route exact path='/login' component={Login} />
            <Route exact path='/register' component={Register} />
            <Route exact path='/dashboard' component={Dashboard} />
          </Switch>
          <Footer />
        </div>
      </Router>
    </Provider>
  );
}

export default App;

// Store.js

import { createStore, applyMiddleware, compose } from 'redux'; // Compose is brought in so that we can combine the reducer with what is required by chrome to add the Redux extension
import thunk from 'redux-thunk'; // Middleware
import rootReducer from './reducers/index'; // Step 1. This is where we will combine all other reducers and be able to bring it into one file as clean as possible

const initialState = {}
  // Step 2

// Create the store
const store = createStore(
  rootReducer,
  initialState,
  compose(applyMiddleware(thunk))
);

// Exporting the store to bring into main App.js file and be able to use across the entired app.
export default store;

Reducers / index.js

import { combineReducers } from 'redux';
import authReducer from './authReducer';
import errorReducer from './errorReducer';

export default combineReducers({
  auth: authReducer,
  errors: errorReducer
});

Actions / types.js

export const GET_ERRORS = 'GET_ERRORS';
export const SET_CURRENT_USER = 'SET_CURRENT_USER';