title: "react-app-polyfill" doesn't work in IE11
body: <p>My React App is not working on IE 11.<br>
  My client wants the app to work on at least ie11.<br>
  So, i have to solve this error.  </p>
  
  <p>I tried the official documentation from "react-app-polyfill". But it still doesn't work.<br>
  Please help me.  </p>
  
  <p><strong>src/index.jsx</strong></p>
  
  <pre class="lang-js prettyprint-override"><code>import 'react-app-polyfill/ie11';
  import 'react-app-polyfill/stable';
  
  import React from 'react';
  import ReactDOM from 'react-dom';
  import './index.css';
  import App from './App';
  import * as serviceWorker from './serviceWorker';
  import { Provider } from 'react-redux';
  import store from './store';
  
  ReactDOM.render(
    &lt;Provider store={store}&gt;
      &lt;App /&gt;
    &lt;/Provider&gt;,
    document.getElementById('root')
  );
  
  serviceWorker.unregister();
  </code></pre>
  
  <p><strong>package.json</strong></p>
  
  <pre><code>  "dependencies": {
      ...
      "@types/jest": "^24.0.25",
      "@types/node": "^12.12.24",
      "@types/react": "^16.9.17",
      "@types/react-dom": "^16.9.4",
      "@types/react-redux": "^7.1.5",
      "@types/react-router-dom": "^5.1.3",
      "axios": "^0.19.0",
      "install": "^0.13.0",
      "node-sass": "^4.13.0",
      "npm": "^6.13.4",
      "react": "^16.12.0",
      "react-app-polyfill": "^1.0.5",
      "react-dom": "^16.12.0",
      "react-hotkeys": "^2.0.0",
      "react-redux": "^7.1.3",
      "react-router": "^5.1.2",
      "react-router-dom": "^5.1.2",
      "react-scripts": "3.3.0",
      "redux": "^4.0.5",
      "redux-devtools-extension": "^2.13.8",
      "redux-thunk": "^2.3.0",
      "typescript": "^3.7.4"
    },
  ...
    "browserslist": {
      "production": [
        "&gt;0.2%",
        "not dead",
        "not op_mini all"
      ],
      "development": [
        "ie 11",
        "last 1 chrome version",
        "last 1 firefox version",
        "last 1 safari version"
      ]
    }
  </code></pre>