⚡️ perf: reprogram the factors

src/lib/network.ts

@@ -1,18 +1,34 @@
 export async function measureNetworkSpeed(): Promise<number> {
-  const startTime = performance.now();
-  const response = await fetch('https://www.cloudflare.com/cdn-cgi/trace', { cache: 'no-store' });
-  const endTime = performance.now();
-  const duration = endTime - startTime;
-  
-  if (!response.ok) {
-    throw new Error('Failed to measure network speed');
+  try {
+    const startTime = performance.now();
+    
+    const response = await fetch('https://www.cloudflare.com/cdn-cgi/trace', {
+      cache: 'no-store',
+    });
+
+    if (!response.ok) {
+      throw new Error(`Failed to fetch, status: ${response.status}`);
+    }
+
+    const endTime = performance.now();
+    const duration = endTime - startTime;
+
+    // Check if Content-Length is available, if not fall back to measuring response size from text.
+    const contentLength = response.headers.get('Content-Length');
+    const size = contentLength ? parseInt(contentLength, 10) : new Blob([await response.text()]).size;
+
+    if (size === 0) {
+      throw new Error('Response has no content size');
+    }
+
+    // Calculate speed in Mbps (megabits per second)
+    const speedMbps = (size * 8) / (duration / 1000) / 1000000;
+
+    const roundedSpeed = Math.round(speedMbps * 100) / 100;
+    console.log(`Measured network speed: ${roundedSpeed} Mbps`);
+    return roundedSpeed;
+  } catch (error) {
+    console.error('Error measuring network speed:', error);
+    throw new Error('Network speed measurement failed');
   }
-  
-  const data = await response.text();
-  const size = new Blob([data]).size;
-  
-  // Calculate speed in Mbps (megabits per second)
-  const speedMbps = (size * 8) / (duration / 1000) / 1000000;
-  
-  return Math.round(speedMbps * 100) / 100;
-}
+}