ProjectE/apps/web/src/main.tsx

import React from "react";
import ReactDOM from "react-dom/client";
import { RouterProvider, createRouter } from "@tanstack/react-router";
import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
import { ReactQueryDevtools } from "@tanstack/react-query-devtools";
import { routeTree } from "./routeTree";
import { ThemeProvider } from "@/components/shell/theme-provider";
import "./index.css";

const queryClient = new QueryClient({
  defaultOptions: {
    queries: {
      staleTime: 5 * 60 * 1000,
      gcTime: 10 * 60 * 1000,
      refetchOnWindowFocus: true,
    },
  },
});

const router = createRouter({ routeTree });

declare module "@tanstack/react-router" {
  interface Register {
    router: typeof router;
  }
}

const rootEl = document.getElementById("root");
if (!rootEl) throw new Error("Root element not found");

ReactDOM.createRoot(rootEl).render(
  <React.StrictMode>
    <QueryClientProvider client={queryClient}>
      <ThemeProvider>
        <RouterProvider router={router} />
      </ThemeProvider>
      {import.meta.env.DEV && <ReactQueryDevtools initialIsOpen={false} />}
    </QueryClientProvider>
  </React.StrictMode>
);