diff --git a/src/db.ts b/src/db.ts
index 0e80655..511612c 100644
--- a/src/db.ts
+++ b/src/db.ts
@@ -102,7 +102,8 @@ class DittoDB {
     });
   }
 
-  getFilter<K extends number = number>(filter: Filter<K>) {
+  getFilter<K extends number = number>(_filter: Filter<K>) {
+    // TODO
   }
 }