Jungfraujoch/frontend/src/index.tsx

import { StrictMode } from "react";
import { createRoot } from "react-dom/client";
import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
import App from "./App";
import { client } from "./client/client.gen";

// Talk to the same origin that serves the frontend (was OpenAPI.BASE='').
client.setConfig({ baseUrl: '' });

const queryClient = new QueryClient({
    defaultOptions: {
        queries: { retry: false, refetchOnWindowFocus: false },
    },
});

const rootElement = document.getElementById("root");

// New as of React v18.x
const root = createRoot(rootElement!);

root.render(
    <StrictMode>
        <QueryClientProvider client={queryClient}>
            <App />
        </QueryClientProvider>
    </StrictMode>
);