index.jsx

import React, { Suspense } from "react";
import ReactDOM from "react-dom";
import { BrowserRouter } from "react-router-dom";

import App from "./App";

ReactDOM.render(
  <Suspense fallback="loading">
    <BrowserRouter>
        <App />
    </BrowserRouter>
  </Suspense>,
  document.getElementById("root")
);