add

app/api/config/route.ts

@@ -0,0 +1,21 @@
+import { NextRequest, NextResponse } from "next/server";
+
+import { getServerSideConfig } from "../../config/server";
+
+const serverConfig = getServerSideConfig();
+
+// Danger! Don not write any secret value here!
+// 警告！不要在这里写入任何敏感信息！
+const DANGER_CONFIG = {
+  needCode: serverConfig.needCode,
+};
+
+declare global {
+  type DangerConfig = typeof DANGER_CONFIG;
+}
+
+export async function POST(req: NextRequest) {
+  return NextResponse.json({
+    needCode: serverConfig.needCode,
+  });
+}