fix: support new vercel style

api/services/appstore/[query].ts

@@ -0,0 +1,49 @@
+import {send, sendError, fetch} from '../../../util/http';
+import {NowRequest, NowResponse} from '@vercel/node';
+
+interface App {
+  trackId: string;
+  trackName: string;
+  kind: string;
+  version: string;
+  price: string;
+  trackViewUrl: string;
+}
+
+interface AppStoreResponse {
+  results: App[];
+}
+
+export default async function handler(
+  req: NowRequest,
+  res: NowResponse,
+): Promise<void> {
+  const {query, country} = req.query;
+
+  if (!query || typeof query !== 'string') {
+    return sendError(res, new Error('No query given'));
+  }
+
+  const term = encodeURIComponent(query);
+  const countryCode = country || 'us';
+  const limit = 10;
+
+  try {
+    const response = await fetch(
+      `https://itunes.apple.com/search?media=software&entity=software,iPadSoftware,macSoftware&country=${countryCode}&limit=${limit}&term=${term}`,
+      'GET',
+    );
+    const body: AppStoreResponse = await response.json();
+    const apps = body.results.map((app) => ({
+      id: app.trackId,
+      name: app.trackName,
+      kind: app.kind,
+      version: app.version,
+      price: app.price,
+      viewURL: app.trackViewUrl,
+    }));
+    send(res, {result: apps || []});
+  } catch (err) {
+    sendError(res, err);
+  }
+}