@base-ui-components/react/menu/utils/types.d.ts

Base UI is a library of headless ('unstyled') React components and low-level hooks. You gain complete control over your app's CSS and accessibility features.

import type { MenuRoot } from "../root/MenuRoot.js";
export interface MenuOpenEventDetails {
  open: boolean;
  reason: MenuRoot.ChangeEventReason | null;
  nodeId: string | undefined;
  parentNodeId: string | null;
}