import { RequestType } from "../types";
import { ClientReadableStream } from "@grpc/grpc-js";
interface streamDataFormat {
    (chunkData: any): any;
}
export declare const streamHelper: {
    isUseStream: (streamReq?: RequestType.QueryResponseListener) => boolean;
    commonDeal: (stream: ClientReadableStream<any>, streamReq?: RequestType.QueryResponseListener, dataFormat?: streamDataFormat) => void;
};
export {};