interface IGraph {
    get isDirected(): boolean;
    get data(): {
        [key: string]: string[];
    };
    get size(): number;
    get nodes(): string[];
    get edges(): [string, string][];
    insert: (_node: string) => string | null;
    connect: (_node1: string, _node2: string) => [string, string];
    breadthFirstSearch: (_startNode: string, _callback: (_node: string) => void) => void;
    getDistancesFrom: (_node: string) => {
        [key: string]: number;
    };
}
export default IGraph;