fix: Update _flatten function signature

AxiosLeo · Mar 13, 2024 · 75f445e · 75f445e
1 parent 2d7dcbd
commit 75f445e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/index.d.ts b/index.d.ts
@@ -738,7 +738,7 @@ export namespace helper {
   }
 
   module obj {
-    function _flatten(obj: ObjectItem, sep: string): ObjectItem;
+    function _flatten(obj: ObjectItem, sep?: string): ObjectItem;
     function _flatten<T>(obj: T, sep: string): ObjectItem;
     function _unflatten(obj: ObjectItem, sep: string): ObjectItem;
     function _unflatten<T>(obj: ObjectItem, sep: string): T;