GMW/services/frontend/src/main.tsx

import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
import React from "react";
import ReactDOM from "react-dom/client";
import App from "./App";
import { ToastProvider } from "./shared/ui";
import "./styles.css";

const queryClient = new QueryClient({
  defaultOptions: {
    queries: {
      staleTime: 30_000, // data stays fresh for 30s — no refetch within this window
      gcTime: 5 * 60_000, // keep unused data in cache for 5 minutes
      refetchOnWindowFocus: false, // avoid spamming the API on tab switches
      retry: 2,
    },
  },
});

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

if (!root) {
  throw new Error("Root element not found");
}

ReactDOM.createRoot(root).render(
  <React.StrictMode>
    <QueryClientProvider client={queryClient}>
      <ToastProvider>
        <App />
      </ToastProvider>
    </QueryClientProvider>
  </React.StrictMode>,
);