import { GraphNode } from './node.js';
import type { UniqueNode } from '../types.js';
export declare class Graph<T extends UniqueNode> {
    #private;
    constructor();
    get nodes(): Set<GraphNode<T>>;
    get registry(): Map<string, GraphNode<T>>;
    hasNode(key: string): boolean;
    getNode(key: string): GraphNode<T>;
    updateNode(key: string, content: T): GraphNode<T>;
    addNode(content: T): GraphNode<T>;
    addEdge(source: GraphNode<T>, destination: GraphNode<T>): Graph<T>;
    getSortedNodes(start?: GraphNode<T> | undefined): GraphNode<T>[];
    private sortUtil;
}
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