ticket_manager/client/src/App.tsx

import React from "react";
import { Router } from "react-router-dom";
import * as createHistory from "history";
import Layout from "./pages/Layout";
import { useAuth0 } from "./authentication/auth0";

export const history = createHistory.createBrowserHistory();

export default function App() {
  const { loading } = useAuth0();

  if (loading) {
    return <div>Loading...</div>;
  }

  return (
    <>
      <Router history={history}>
        <Layout />
      </Router>
    </>
  );
}