fix: suppress CORS flood from excalidraw.com/og-image-3.png fetch

2026-06-25 00:52:35 +02:00
parent 9e53a9b92c
commit bb710b46b0
2 changed files with 53 additions and 0 deletions
@@ -725,6 +725,20 @@
            gap: 10px;
        }
    </style>
+    <!-- CORS flood suppressor: intercepts @excalidraw/excalidraw internal fetch to
+         https://excalidraw.com/og-image-3.png which triggers 6× CORS errors on
+         non-excalidraw.com origins. Returns 204 immediately, never leaves browser. -->
+    <script>
+    window.fetch = new Proxy(window.fetch, {
+      apply(target, thisArg, args) {
+        var url = args[0];
+        if (typeof url === 'string' && url.indexOf('og-image-3.png') !== -1) {
+          return Promise.resolve(new Response(null, { status: 204 }));
+        }
+        return Reflect.apply(target, thisArg, args);
+      }
+    });
+    </script>
 </head>
 <body>
    <div id="root"></div>