diff --git a/frontend/src/lib/components/forms/book-delete.svelte b/frontend/src/lib/components/forms/book-delete.svelte
index db4200a..ffc91ce 100644
--- a/frontend/src/lib/components/forms/book-delete.svelte
+++ b/frontend/src/lib/components/forms/book-delete.svelte
@@ -13,7 +13,7 @@
 	}: {
 		open: boolean;
 		title?: string;
-		deleteFn: (deleteFiles: boolean) => {};
+		deleteFn: (deleteFiles: boolean) => void | Promise<void>;
 	} = $props();
 
 	const selectedState = getBookSelectionState();
diff --git a/frontend/src/routes/api/[...path]/+server.ts b/frontend/src/routes/api/[...path]/+server.ts
index ea9eaae..948f6b9 100644
--- a/frontend/src/routes/api/[...path]/+server.ts
+++ b/frontend/src/routes/api/[...path]/+server.ts
@@ -1,7 +1,7 @@
 // src/routes/api/[...path]/+server.ts
 import { BACKEND_API_URL } from '$lib/server/config';
 import { json, error } from '@sveltejs/kit';
-// import type { RequestHandler } from './$types';
+import type { RequestHandler } from './$types';
 
 // Helper function to handle both JSON and file responses
 async function handleResponse(response: Response) {