Initial commit

landing/src/server/middleware/not-found-status.ts

@@ -0,0 +1,32 @@
+import { defineEventHandler, getRequestURL, setResponseStatus } from 'h3';
+
+/**
+ * Answers 404 for addresses this app does not serve.
+ *
+ * The status cannot be set from the catch-all page's `load`: Analog resolves
+ * loaders through an internal request, so anything set on that response never
+ * reaches the browser. Here it can be, and the route table is small enough to
+ * state outright — the landing is one page.
+ */
+const KNOWN_PATHS = new Set(['/', '/index.html']);
+
+const PASSTHROUGH_PREFIXES = ['/api/', '/_analog/', '/assets/', '/@', '/src/', '/node_modules/'];
+
+export default defineEventHandler((event) => {
+  const { pathname } = getRequestURL(event);
+
+  if (KNOWN_PATHS.has(pathname)) {
+    return;
+  }
+
+  // Static files answer for themselves — a missing one is Nitro's 404, not a
+  // page, and stamping this status on a hit would break the asset.
+  if (
+    PASSTHROUGH_PREFIXES.some((prefix) => pathname.startsWith(prefix)) ||
+    /\.[a-z0-9]+$/i.test(pathname)
+  ) {
+    return;
+  }
+
+  setResponseStatus(event, 404);
+});