import type { Edge } from './Edge';
import type IGraph from './IGraph';
import type IGraphOptions from './IGraphOptions';
export default class Graph implements IGraph {
    private readonly _isDirected;
    private readonly _data;
    constructor({ inputs, isDirected }?: Readonly<IGraphOptions>);
    get isDirected(): boolean;
    get data(): {
        [key: string]: string[];
    };
    get size(): number;
    get nodes(): string[];
    get edges(): Edge[];
    insert(node: string): string | null;
    connect(node1: string, node2: string): Edge;
    breadthFirstSearch(startNode: string, callback: (_node: string) => void): void;
    getDistancesFrom(node: string): {
        [key: string]: number;
    };
}