import type { Counter, GraphOptions, Key, Node, Value } from './types.js';
export default class Graph<T extends Key> {
    private nodeMap;
    private path;
    constructor(options?: GraphOptions);
    static from<T extends Key>(nodes: Node<T>[] | Node<T>[][], options?: GraphOptions): Graph<Key>;
    key(keyOrValue: Key | Value<T>): Key;
    keys(): Key[];
    value(key: Key): Value<T> | T;
    edges(key: Key): T[];
    add(keyOrValue: Key | Value<T>, toKeyOrValue?: Key | Value<T>): void;
    degrees<T extends Key>(): Counter<T, number>;
}