export interface GraphServiceConnectOptions {
    clientId: string;
    authority: string;
    clientSecret: string;
}
export declare class GraphService {
    private options;
    private _logger;
    private _accessToken;
    private _options;
    constructor(options: GraphServiceConnectOptions);
    private _refreshAccessToken;
    connect(): Promise<void>;
    query(resource: string): Promise<any>;
}