diff --git a/src/types/AirTree.ts b/src/types/AirTree.ts
index ac51b8f..4fc854e 100644
--- a/src/types/AirTree.ts
+++ b/src/types/AirTree.ts
@@ -15,3 +15,4 @@ export type AirTree<T extends AirNode<any, any>[]> = HasTail<T> extends true
 
 
 
+