Improve application loading robustness and error handling on Chrome

Add a timeout to detect and handle Chrome loading issues, implement preloading attributes, and improve error reporting for failed React app mounts.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 890577b1-c154-40a4-a177-a0c6d55320c3
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/8cc42625-c1f5-4e43-99bd-77f2c4dedee2/890577b1-c154-40a4-a177-a0c6d55320c3/DyHCx4q

client/index.html

@@ -101,13 +101,34 @@
         }
       </style>
     </div>
-    <script type="module" src="/src/main.tsx"></script>
+    <script type="module" src="/src/main.tsx" defer></script>
+    <link rel="preload" href="/src/main.tsx" as="script" crossorigin>
+    <link rel="dns-prefetch" href="//fonts.googleapis.com">
+    <link rel="preconnect" href="//fonts.gstatic.com" crossorigin>
     <!-- Replit script removed - caused scrolling issues -->
     
     <!-- Debug script for deployment issues -->
     <script>
       console.log('🚀 go4.video loading...');
       
+      // Set timeout to detect hanging in Chrome
+      let appLoadTimeout = setTimeout(function() {
+        console.warn('⚠️ App taking too long to load in Chrome, forcing refresh...');
+        const preloader = document.getElementById('app-preloader');
+        if (preloader) {
+          preloader.innerHTML = '<div style="text-align: center; color: white;"><h2>Loading timeout</h2><p>Refreshing automatically...</p></div>';
+        }
+        setTimeout(function() {
+          location.reload();
+        }, 2000);
+      }, 8000); // 8 second timeout for Chrome
+      
+      // Global callback for when app loads successfully
+      window.appLoaded = function() {
+        clearTimeout(appLoadTimeout);
+        console.log('⏱️ App load timeout cleared');
+      };
+      
       // Clear any cached service workers
       if ('serviceWorker' in navigator) {
         navigator.serviceWorker.getRegistrations().then(function(registrations) {
@@ -122,16 +143,17 @@
         console.log('✅ Window loaded');
         setTimeout(function() {
           const root = document.getElementById('root');
-          if (root && root.innerHTML.trim() === '') {
+          const preloader = document.getElementById('app-preloader');
-            console.error('❌ React app failed to mount - root div is empty');
+          if (preloader && preloader.style.opacity !== '0') {
-            root.innerHTML = '<div style="color: red; padding: 20px; font-family: Arial; text-align: center; background: #000; height: 100vh; display: flex; align-items: center; justify-content: center;"><div><h1>Error: React app failed to load</h1><p>Refreshing page automatically...</p></div></div>';
+            console.error('❌ React app failed to mount - preloader still visible');
+            preloader.innerHTML = '<div style="text-align: center; color: white;"><h2>Loading failed</h2><p>Refreshing automatically...</p></div>';
             
             // Auto-refresh after 3 seconds
             setTimeout(function() {
               location.reload();
             }, 3000);
           }
-        }, 2000);
+        }, 5000);
       });
       
       window.addEventListener('error', function(e) {

client/src/main.tsx

@@ -2,8 +2,20 @@ import { createRoot } from "react-dom/client";
 import App from "./App";
 import "./index.css";
 
+// Type declaration for global callback
+declare global {
+  interface Window {
+    appLoaded?: () => void;
+  }
+}
+
 console.log('🎬 main.tsx starting...');
 
+// Force immediate execution - no waiting for DOM
+document.addEventListener('DOMContentLoaded', function() {
+  console.log('📄 DOM Content Loaded');
+});
+
 // Disable Service Worker for now - can cause caching issues
 // if ('serviceWorker' in navigator) {
 //   window.addEventListener('load', () => {
@@ -17,7 +29,9 @@ console.log('🎬 main.tsx starting...');
 //   });
 // }
 
-try {
+// Force immediate execution function
+function initApp() {
+  try {
     const rootElement = document.getElementById("root");
     console.log('🎯 Root element found:', rootElement);
     
@@ -33,6 +47,11 @@ try {
     
     console.log('✅ React app mounted successfully');
     
+    // Call global callback to clear timeout
+    if (window.appLoaded) {
+      window.appLoaded();
+    }
+    
     // Remove preloader once React app has mounted  
     setTimeout(() => {
       const preloader = document.getElementById('app-preloader');
@@ -45,7 +64,7 @@ try {
         }, 500);
       }
     }, 100);
-} catch (error) {
+  } catch (error) {
     console.error('❌ Failed to mount React app:', error);
     
     // Fallback error display
@@ -56,9 +75,24 @@ try {
           <div>
             <h1>Critical Error: React app failed to start</h1>
             <p>Error: ${error instanceof Error ? error.message : 'Unknown error'}</p>
-          <p>Check browser console for details</p>
+            <p>Refreshing automatically in 3 seconds...</p>
           </div>
         </div>
       `;
+      
+      // Auto-refresh on error
+      setTimeout(() => {
+        location.reload();
+      }, 3000);
+    }
   }
 }
+
+// Try to initialize immediately
+if (document.readyState === 'loading') {
+  // DOM still loading
+  document.addEventListener('DOMContentLoaded', initApp);
+} else {
+  // DOM already loaded
+  initApp();
+}