jQuery项目中的Redux状态更改后尝试呈现组件时，无效的挂钩调用

问题描述

我希望逐步从我的项目中删除jQuery以支持React。我正在尝试使用功能挂钩在Redux状态更改后更新视图。我在codepen.io上编写了一个工作示例。但是，当我尝试在项目中执行此操作时，尝试使用功能组件时收到无效的挂钩调用错误。我似乎以某种方式有2个版本的React，但是我不确定为什么。这是由webpack配置错误引起的吗？在我的注释中注释掉对useSelector的调用，可以消除该错误。

控制台对此检查返回false。

console.log(window.React1 === window.React2);

npm ls react
-- [email protected]

//package.json
    "react": "^16.13.1","react-dom": "^16.13.1","react-redux": "^7.2.1",

//.babelrc for babel 7
// Invalid hook call error persists if modules & targets are commented out and the defaults are used instead

    "presets": [
        [          
          "@babel/preset-env",{
            //turn off transpile to Commonjs 
            "modules": false,//allow native async await
            "targets": {
              "node": "10"
            }           
          }
        ],"@babel/preset-react",//parse jsx Syntax
        
      ]    
}

//webpack.config.js
//rules
            {
                test: /\.(js|jsx)$/,exclude: /node_modules/,use: ['babel-loader']
            },

//MyUl.jsx
import React from 'react';
import { useSelector } from 'react-redux';


window.React2 = React;
console.log(window.React1 === window.React2);

let liKey = 0
let li = (count) => {
    return <li key={liKey++}>{count}</li>;
};
let buildList = (count) => {
    let list = [];
    for (let i = count; i--;) {
        list.push(li(count));
    }
    return list;
};

export const MyUl = ()  => {
    const blockList = useSelector(state => state.blockList);
    let count = 4;

    return (
        <ul id='list'>
            <li>1st element</li>
            {buildList(count)}
        </ul>
    );
};

//main.js
import React from 'react';
import { MyUl } from './MyUl';
ReactDOM.render(MyUl(),$('#blockLinks')[0]);
window.React1 = React;

解决方法

事实证明，渲染时我缺少Provider组件。 “无效的钩子调用”是对此特定错误的可怕描述。

//main.js
    import { Provider } from 'react-redux';
    ReactDOM.render(
        <Provider store={store}>
          MyUl
          <MyUl/>
        </Provider>,$('#blockLinks')[0]
    );