import { Observable } from 'rxjs';
import { ReadonlyReactiveMap } from './reactive-map';
export type ReactiveTreeNodeType = {
    id: string;
    parentId?: string | null;
};
export declare class ReactiveTree<TNode extends ReactiveTreeNodeType> {
    private readonly sortCompareFn?;
    readonly rootNodes$: Observable<TNode[]>;
    private readonly _nodesMap;
    private readonly _rootNodeIdsSet;
    private readonly _childNodeIdsMap;
    private readonly _orphanNodesMap;
    constructor(sortCompareFn?: ((first: TNode, second: TNode) => number) | undefined);
    get nodesMap(): ReadonlyReactiveMap<string, TNode>;
    getParent(nodeId: string): TNode | null;
    getParent$(nodeId: string): Observable<TNode | null>;
    recursivelyGetAllParents$(nodeId: string): Observable<TNode[]>;
    recursivelyGetAllParents(nodeId: string): TNode[];
    recursivelyGetAllChildIds(nodeId: string): string[];
    getChildren$(nodeId: string): Observable<TNode[]>;
    getChildren(nodeId: string): TNode[];
    getSiblings$(nodeId: string): Observable<TNode[]>;
    getNodeSiblingIndex$(nodeId: string): Observable<number>;
    getLevel(nodeId: string): number;
    setNodes(...nodesToAdd: TNode[]): void;
    deleteNodes(...nodeIds: string[]): void;
    deleteChildrenOfNode(nodeId: string): void;
    clear(): void;
    private getNodeById;
    private getNodesById$;
    private getNodesById;
}