import * as stubs from "../proto/orchestrator_service_grpc_pb";
import * as grpc from "@grpc/grpc-js";
export declare class GrpcClient {
    private readonly _hostAddress;
    private readonly _tls;
    private readonly _options;
    private _stub;
    constructor(hostAddress?: string, options?: grpc.ChannelOptions, useTLS?: boolean);
    get stub(): stubs.TaskHubSidecarServiceClient;
    _generateClient(): stubs.TaskHubSidecarServiceClient;
    _generateCredentials(): grpc.ChannelCredentials;
    _generateChannelOptions(options?: grpc.ChannelOptions): grpc.ChannelOptions;
}