fix linter + make proxy work + remove temp files + fix typescript types

src/routes/index.ts

@@ -0,0 +1,22 @@
+import { getProxyHeaders, getAfterResponseHeaders } from '../utils/headers';
+
+export default defineEventHandler(async (event) => {
+  // handle cors, if applicable
+  if (isPreflightRequest(event)) return handleCors(event, {});
+
+  // parse destination URL
+  const destination = getQuery<{ destination?: string }>(event).destination;
+  if (!destination) throw new Error('invalid destination');
+
+  // proxy
+  await proxyRequest(event, destination, {
+    fetchOptions: {
+      redirect: 'follow',
+      headers: getProxyHeaders(event.headers),
+    },
+    onResponse(outputEvent, response) {
+      const headers = getAfterResponseHeaders(response.headers, response.url);
+      appendResponseHeaders(outputEvent, headers);
+    },
+  });
+});