import { type PartialWithUndefined } from '@augment-vir/common';
import { type BookTreeNode } from '../../book-tree/book-tree-node.js';
import { type BookPageControlsValues } from './book-page-controls.js';
/**
 * Nested page controls.
 *
 * @category Internal
 */
export type ControlsWrapper = {
    children: {
        [Breadcrumb: string]: ControlsWrapper;
    };
    controls: BookPageControlsValues;
};
/**
 * Find the controls at the given breadcrumbs.
 *
 * @category Internal
 */
export declare function traverseControls(controlsWrapper: ControlsWrapper, fullUrlBreadcrumbs: ReadonlyArray<string>): BookPageControlsValues;
/**
 * Add new controls at the given breadcrumbs.
 *
 * @category Internal
 */
export declare function createNewControls(controlsWrapper: Readonly<ControlsWrapper>, breadcrumbsForNewValue: ReadonlyArray<string>, newValues: BookPageControlsValues): ControlsWrapper;
/**
 * Add new controls from the given tree node.
 *
 * @category Internal
 */
export declare function updateTreeControls(node: BookTreeNode, existingControls: PartialWithUndefined<ControlsWrapper> | undefined): ControlsWrapper;