import { UnsavedChangesDialogProps } from "../components/UnsavedChangesDialog.js";
/**
 * A single, unified hook to prevent navigation when there are unsaved changes.
 *
 * It automatically handles:
 * 1. Internal React Router navigation using `useBlocker`.
 * 2. External browser navigation (page refresh, tab close) using `beforeunload`.
 */
export declare function useUnsavedChangesDialog(when: boolean, onOk: () => void): {
    dialogProps: UnsavedChangesDialogProps;
    triggerDialog: () => void;
};