chore(api): simplify vercel function config and move ping to TypeScript

Remove the explicit functions overrides from app/vercel.json so api routes rely on Vercel defaults, and replace api/ping.js with a typed api/ping.ts handler that supports both Request/Response and legacy (req, res) invocation while returning { ok: true, ping: true }.

Made-with: Cursor

Author: anriltine

app/api/ping.js

@@ -0,0 +1,41 @@
+/**
+ * Zero-dependency health check.
+ * GET /api/ping → { ok: true, ping: true }
+ *
+ * Supports both:
+ * - Web API style (Request → Response)
+ * - Legacy Node style (req, res)
+ */
+
+type NodeRes = {
+  setHeader(name: string, value: string): void;
+  status(code: number): void;
+  end(body?: string): void;
+};
+
+function jsonResponse(body: object, status: number): Response {
+  return new Response(JSON.stringify(body), {
+    status,
+    headers: { 'Content-Type': 'application/json' },
+  });
+}
+
+async function handler(
+  request: Request,
+  res?: NodeRes,
+): Promise<Response | void> {
+  const body = { ok: true, ping: true };
+
+  if (res) {
+    res.setHeader('Content-Type', 'application/json');
+    res.status(200);
+    res.end(JSON.stringify(body));
+    return;
+  }
+
+  return jsonResponse(body, 200);
+}
+
+export default handler;
+export const GET = handler;
+

app/api/ping.ts

@@ -3,9 +3,5 @@
   "buildCommand": "npm run db:migrate && npx expo export -p web && npx tsx scripts/set-webhook.ts",
   "outputDirectory": "dist",
   "framework": null,
-  "installCommand": "npm install",
-  "functions": {
-    "api/ping.js": { "maxDuration": 10 },
-    "api/telegram.ts": { "maxDuration": 60 }
-  }
+  "installCommand": "npm install"
 }