/**
 * @typedef {import('./Vertex.js').default} Vertex
 */
/**
 * One edge of a directed graph, describing the connection between
 * two vertices; where the edge has a direction.
 *
 * @public
 */
export default class Edge {
    /**
     * @param {Vertex} from
     * @param {Vertex} to
     * @param {*=} data
     */
    constructor(from: Vertex, to: Vertex, data?: any | undefined);
    /**
     * The starting vertex.
     *
     * @public
     * @returns {Vertex}
     */
    public get from(): Vertex;
    /**
     * The end vertex.
     *
     * @public
     * @returns {Vertex}
     */
    public get to(): Vertex;
    /**
     * Ad hoc data associated with the edge (in other words the "value"
     * of the edge).
     *
     * @public
     * @returns {*|null}
     */
    public get data(): any | null;
    /**
     * Returns a string representation.
     *
     * @public
     * @returns {string}
     */
    public toString(): string;
    #private;
}
export type Vertex = import("./Vertex.js").default;