export interface IEdge {
    node1: INode;
    node2: INode;
    color?: string;
}
export interface INode {
    color?: string;
    hotspot?: number;
    hotspot_pos?: number;
    layer?: number;
    path: string;
}
export declare function getRandomColor(): string;
export declare class Graph {
    edges: IEdge[];
    nodes: INode[];
    color_edges: boolean;
    start_node?: INode;
    constructor(color_edges: boolean);
    walk(start_node: INode, cb: (edge: IEdge, path: IEdge[]) => boolean, path?: IEdge[], visited_edges?: Set<IEdge>, visited_nodes?: Set<INode>): INode[];
    get_node_for_id(path: string): INode;
    get_edges_for_node(node: INode): IEdge[];
    get_incoming_edges_for_node(node: INode): IEdge[];
    get_outgoing_edges_for_node(node: INode): IEdge[];
    add_node(node: INode): INode;
    to_dot(root_node?: string): string;
    add_edge(edge: IEdge): IEdge;
}