Fix(webapp): Dynamically load spline on 404 on page (#2834)

Remove the spline dependency and load it dynamically on the 404 page.

Uses a web component with a workaround for React.

Author: samejr

apps/webapp/app/components/ErrorDisplay.tsx

@@ -1,11 +1,10 @@
 import { HomeIcon } from "@heroicons/react/20/solid";
 import { isRouteErrorResponse, useRouteError } from "@remix-run/react";
-import { motion } from "framer-motion";
 import { friendlyErrorDisplay } from "~/utils/httpErrors";
 import { LinkButton } from "./primitives/Buttons";
 import { Header1 } from "./primitives/Headers";
 import { Paragraph } from "./primitives/Paragraph";
-import Spline from "@splinetool/react-spline";
+import { TriggerRotatingLogo } from "./TriggerRotatingLogo";
 import { type ReactNode } from "react";
 
 type ErrorDisplayOptions = {
@@ -57,14 +56,7 @@ export function ErrorDisplay({ title, message, button }: DisplayOptionsProps) {
           {button ? button.title : "Go to homepage"}
         </LinkButton>
       </div>
-      <motion.div
-        className="pointer-events-none absolute inset-0 overflow-hidden"
-        initial={{ opacity: 0 }}
-        animate={{ opacity: 1 }}
-        transition={{ delay: 0.5, duration: 2, ease: "easeOut" }}
-      >
-        <Spline scene="https://prod.spline.design/wRly8TZN-e0Twb8W/scene.splinecode" />
-      </motion.div>
+      <TriggerRotatingLogo />
     </div>
   );
 }

apps/webapp/app/components/TriggerRotatingLogo.tsx

@@ -0,0 +1,75 @@
+import { motion } from "framer-motion";
+import { useEffect, useState } from "react";
+
+declare global {
+  namespace JSX {
+    interface IntrinsicElements {
+      "spline-viewer": React.DetailedHTMLProps<
+        React.HTMLAttributes<HTMLElement> & {
+          url?: string;
+          "loading-anim-type"?: string;
+        },
+        HTMLElement
+      >;
+    }
+  }
+
+  interface Window {
+    __splineLoader?: Promise<void>;
+  }
+}
+
+export function TriggerRotatingLogo() {
+  const [isSplineReady, setIsSplineReady] = useState(false);
+
+  useEffect(() => {
+    // Already registered from a previous render
+    if (customElements.get("spline-viewer")) {
+      setIsSplineReady(true);
+      return;
+    }
+
+    // Another mount already started loading - share the same promise
+    if (window.__splineLoader) {
+      window.__splineLoader.then(() => setIsSplineReady(true)).catch(() => setIsSplineReady(false));
+      return;
+    }
+
+    // First mount: create script and shared loader promise
+    const script = document.createElement("script");
+    script.type = "module";
+    // Version pinned; SRI hash omitted as unpkg doesn't guarantee hash stability across deploys
+    script.src = "https://unpkg.com/@splinetool/[email protected]/build/spline-viewer.js";
+
+    window.__splineLoader = new Promise<void>((resolve, reject) => {
+      script.onload = () => resolve();
+      script.onerror = () => reject();
+    });
+
+    window.__splineLoader.then(() => setIsSplineReady(true)).catch(() => setIsSplineReady(false));
+
+    document.head.appendChild(script);
+
+    // Intentionally no cleanup: once the custom element is registered globally,
+    // removing the script would break re-mounts while providing no benefit
+  }, []);
+
+  if (!isSplineReady) {
+    return null;
+  }
+
+  return (
+    <motion.div
+      className="pointer-events-none absolute inset-0 overflow-hidden"
+      initial={{ opacity: 0 }}
+      animate={{ opacity: 1 }}
+      transition={{ delay: 0.5, duration: 2, ease: "easeOut" }}
+    >
+      <spline-viewer
+        loading-anim-type="spinner-small-light"
+        url="https://prod.spline.design/wRly8TZN-e0Twb8W/scene.splinecode"
+        style={{ width: "100%", height: "100%" }}
+      />
+    </motion.div>
+  );
+}

apps/webapp/package.json

@@ -109,7 +109,6 @@
     "@sentry/remix": "9.46.0",
     "@slack/web-api": "7.9.1",
     "@socket.io/redis-adapter": "^8.3.0",
-    "@splinetool/react-spline": "^2.2.6",
     "@tabler/icons-react": "^2.39.0",
     "@tailwindcss/container-queries": "^0.1.1",
     "@tanstack/react-virtual": "^3.0.4",