Build installer and management site from spec

src/shared/nat-upnp.d.ts

@@ -0,0 +1,9 @@
+declare module 'nat-upnp' {
+  const upnp: {
+    createClient(): {
+      portMapping(options: Record<string, unknown>, callback: (error?: Error | null) => void): void
+    }
+  }
+
+  export default upnp
+}