您store默认导出：export default store;

您需要通过以下方式导入它： import store from './Store/Store'

有两种出口：

• export myVar必须用进口{和}
• export default myVar必须不带{和导入}

这对于从文件导出/导入多个变量/函数很有用：

// file.js
export a;
export b;
export default c;

//otherfile.js
import c, { a , b} from './file';

解决方法

如何解决react-redux项目错误屏幕快照中的此错误
警告：道具类型失败：该道具store在中标记为必需Provider，但其值为undefined。在提供者中

import React from 'react';
import ReactDOM from 'react-dom';
import App from './App';
import './index.css';
import SignUp from './Components/SignUp'
import SignIn from './Components/SignIn'
import Home from './Components/Home'
import { Router,Route,hashHistory,IndexRoute,browserHistory } from 'react-router';
import MuiThemeProvider from 'material-ui/styles/MuiThemeProvider';
import {firebaseApp} from './Database/firebaseApp'
import {Provider} from 'react-redux'
import {store} from './Store/Store'
import {logUser} from './Store/Actions'

ReactDOM.render(
  <MuiThemeProvider>
    <Provider store={store}>
      <Router history={browserHistory} >

        <Route path="/signup" component={SignUp} ></Route>
        <Route path="/signin" component={SignIn} ></Route>
        <Route path="/home" component={Home} ></Route>

      </Router>
    </Provider>
  </MuiThemeProvider>,document.getElementById('root')
);

//在下面存储代码

import { createStore,applyMiddleware,combineReducers } from 'redux';
import thunk from 'redux-thunk';
import {createLogger} from "redux-logger";
//import logger from 'redux-logger'

//import rootReducer from './Reducers/rootReducer'
import {authReducer} from "./Reducers/authReducer"

const rootReducer = combineReducers({
    authReducer
})
const logger = createLogger ;

let store = createStore(rootReducer,applyMiddleware(thunk,logger) );

export default store;