import type { Identify } from '../utilities/identify.js';
import type { IdSpec, ItemIdOptions } from '../utilities/identity-options.js';
import { Hierarchy } from './hierarchy.js';
/**
 * Convenience functions for creating and mapping `Hierarchy` instances.
 */
export declare class Hierarchies {
    /** Create a hierarchy of `Id`s. */
    static createForIds<Id>(): Hierarchy<Id>;
    /** Create a hierarchy of `Item`s using the provided identify function. */
    static createForItems<Item, Id>(identify: Identify<Item, Id>): Hierarchy<Item, Id>;
    /**
     * Create a hierarchy of `Id`s matching the `spec`.
     *
     * @param spec Specification of how to create an `Id` hierarchy from a list of relations, a multi-map of `Id`s or a hierarchy.
     */
    static createWithIds<Id>(spec: IdSpec<Id>): Hierarchy<Id>;
    /**
     * Create a hierarchy of `Id`s matching the properties of the `source`.
     *
     * @param source The object describing the relations.
     * @param include Optional predicate used for determining whether a property should be included as an ID.
     */
    static createWithPropertyIds(source: object, include?: (prop: string, val: any) => boolean): Hierarchy<string>;
    /**
     * Create a hierarchy of `Item`s matching details from the `options`.
     *
     * @template Item The type of item.
     * @template Id The type of IDs.
     * @param items The items to wrap in nodes.
     * @param identify Means of getting an ID for an item.
     * @param options Options with details on how to create an `Item` hierarchy from a list of relations, a multi-map of `Id`s,
     *                a hierarchy or functions for inferring the relations from each item.
     * @returns The fully linked `Hierarchy<Item, Id>`.
     */
    static createWithItems<Item, Id>(options: ItemIdOptions<Item, Id>): Hierarchy<Item, Id>;
}
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