first commit

common/resources/client/ui/tree/tree-context.tsx

@@ -0,0 +1,12 @@
+import {createContext, Key} from 'react';
+
+export interface TreeContextValue {
+  expandedKeys: Key[];
+  setExpandedKeys: (value: Key[]) => void;
+  selectedKeys: Key[];
+  setSelectedKeys: (value: Key[]) => void;
+  focusedNode?: Key;
+  setFocusedNode: (node?: Key) => void;
+}
+
+export const TreeContext = createContext<TreeContextValue>(null!);