import type { GraphNodeObj } from '@eggjs/tegg-types';
declare const inspect: unique symbol;
export interface EdgeMeta {
    equal(meta: EdgeMeta): boolean;
    toString(): string;
}
export declare class GraphNode<T extends GraphNodeObj, M extends EdgeMeta = EdgeMeta> {
    val: T;
    toNodeMap: Map<string, {
        node: GraphNode<T, M>;
        meta?: M;
    }>;
    fromNodeMap: Map<string, {
        node: GraphNode<T, M>;
        meta?: M;
    }>;
    constructor(val: T);
    get id(): string;
    addToVertex(node: GraphNode<T, M>, meta?: M): boolean;
    addFromVertex(node: GraphNode<T, M>, meta?: M): boolean;
    [inspect](): {
        val: T;
        toNodes: {
            node: GraphNode<T, M>;
            meta?: M;
        }[];
        fromNodes: {
            node: GraphNode<T, M>;
            meta?: M;
        }[];
    };
    toJSON(): {
        val: T;
        toNodes: {
            node: GraphNode<T, M>;
            meta?: M;
        }[];
        fromNodes: {
            node: GraphNode<T, M>;
            meta?: M;
        }[];
    };
    toString(): string;
}
export declare class GraphPath<T extends GraphNodeObj, M extends EdgeMeta = EdgeMeta> {
    nodeIdMap: Map<string, number>;
    nodes: Array<{
        node: GraphNode<T, M>;
        meta?: M;
    }>;
    pushVertex(node: GraphNode<T, M>, meta?: M): boolean;
    popVertex(): void;
    toString(): string;
    [inspect](): string;
}
export declare class Graph<T extends GraphNodeObj, M extends EdgeMeta = EdgeMeta> {
    nodes: Map<string, GraphNode<T, M>>;
    addVertex(node: GraphNode<T, M>): boolean;
    addEdge(from: GraphNode<T, M>, to: GraphNode<T, M>, meta?: M): boolean;
    findToNode(id: string, meta: M): GraphNode<T, M> | undefined;
    appendVertexToPath(node: GraphNode<T, M>, accessPath: GraphPath<T, M>, meta?: M): boolean;
    loopPath(): GraphPath<T, M> | undefined;
    accessNode(node: GraphNode<T, M>, nodes: Array<GraphNode<T, M>>, accessed: boolean[], res: Array<GraphNode<T, M>>): void;
    sort(): Array<GraphNode<T, M>>;
}
export {};