TicketingSystem/client/src/main.tsx

import { StrictMode } from 'react';
import { createRoot } from 'react-dom/client';
import { QueryClientProvider } from '@tanstack/react-query';
import { queryClient } from './api/queryClient';
import { ThemeProvider } from './contexts/ThemeContext';
import { Toaster } from '@/components/ui/sonner';
import './index.css';
import App from './App';

createRoot(document.getElementById('root')!).render(
  <StrictMode>
    <ThemeProvider>
      <QueryClientProvider client={queryClient}>
        <App />
        <Toaster />
      </QueryClientProvider>
    </ThemeProvider>
  </StrictMode>,
);

if ('serviceWorker' in navigator && import.meta.env.PROD) {
  window.addEventListener('load', () => {
    navigator.serviceWorker.register('/sw.js').catch(() => {
      // Installability is a progressive enhancement; ignore failures
    });
  });
}