react-redux：TypeError：store.getState不是函数

Question

最近我学习react和redux，当我尝试根据是否有userID显示不同的模块时，会发生错误：   

这是我如何初始化商店：

import React,{Children} from 'react';
import ReactDOM from 'react-dom';
import {createStore} from 'redux'
import {Provider} from 'react-redux'

import {BrowserRouter,Route} from 'react-router-dom';
import './index.css';
import App from './App';
    import RootReducer from './reducers/index'
import registerServiceWorker from './registerServiceWorker';

const store = createStore(RootReducer);


    ReactDOM.render(
    <Provider store={{store}}>
    <BrowserRouter>
        <Route component={App} />
    </BrowserRouter>
    </Provider>  ,
    document.getElementById('root')); 
    registerServiceWorker();

这是我使用connect（）生成容器的地方：

 import React from 'react'
  import {Dropdown,Button,Menu} from 'antd'  
  import {connect} from 'react-redux'
  import  {Link} from 'react-router-dom'
import logo from '../../logo.svg'
const menu = (
    <Menu>
        <Menu.Item>
            <Link to='/home/accountInfo'>Account Information</Link>
        </Menu.Item>
        ... //just some links, I think they are correct
    </Menu>
);
const mapStateToProps= state=>{
    return{
        userID: state.userID
    } 
}
const mapDispatchToProps= dispatch=>{
    return{}
}

  const topBarIcon=function({userID=undefined}) {
      if(userID)
      return (
          <div>
              <Dropdown overlay={menu}>
                  <Link to='/home/accountInfo'>
                      <Button shape="circle" gost>
                          {JSON.stringify(userID)}
                          <img src={logo} alt='UserLogo' height="30" width="30"/>
                      </Button>
                      </Link>

              </Dropdown>
          </div>
          );
      return(
          <div>
              <Link to='/login'>
                  <Button type="primary" className="LoginButton">
                      Login
                  </Button>
              </Link>
          </div>
      );
  } 
const TopBarIcon= connect(mapStateToProps,mapDispatchToProps())(topBarIcon)
export default  TopBarIcon

我使用商店的方式应该与react-redux文档中的示例非常相似，而且我不确定哪个步骤是导致此类错误的原因。我尝试在props中声明调度而不是connect（）参数，但错误仍然存​​在。

Answer 1

它是<Provider store={store}>

您添加了一个额外的括号