redux-devtools安装

chrome市场上不去，建议用edge
edge的外接程序中找到reduc devtools,然后安装

项目中需要安装redux-devtools-extension

npm i -D redux-devtools-extension

// index.js
import { composeWithDevTools } from "redux-devtools-extension";
import { createStore,applyMiddleware } from "redux"
import rootReducer from "./reducer"
import { Provider } from "react-redux"

const store = createStore(rootReducer,composeWithDevTools(applyMiddleware(需要用到的中间件)))

ReactDOM.render(
  <React.StrictMode>
    <Provider store={store}>
      <App />
    </Provider>
  </React.StrictMode>,
  document.getElementById("root")
);