add all frontend files

node_modules/antd/lib/splitter/hooks/useItems.d.ts

@@ -0,0 +1,14 @@
+import * as React from 'react';
+import type { PanelProps } from '../interface';
+export type ItemType = Omit<PanelProps, 'collapsible'> & {
+    collapsible: {
+        start?: boolean;
+        end?: boolean;
+        showCollapsibleIcon: 'auto' | boolean;
+    };
+};
+/**
+ * Convert `children` into `items`.
+ */
+declare function useItems(children: React.ReactNode): ItemType[];
+export default useItems;