export default interface IServiceResponse<T> {
    success: boolean;
    message: string;
    payload: T;
}
/**
 * Returns a new service response, appending an error message if the input sr failed.
 *
 * @param sr - existing service response
 * @param message - additional message to append if sr wasn't successful
 */
export declare function getServiceResponse<T>(sr: IServiceResponse<T>, message?: string): IServiceResponse<T>;
/**
 * Returns a successful IServiceResponse with the given payload.
 *
 * @param payload - payload to return
 */
export declare function successfulServiceResponse<T>(payload: T): IServiceResponse<T>;
/**
 * Returns a failure service response with the given error message.
 *
 * @param message - error message
 */
export declare function failureServiceResponse<T>(message: string): IServiceResponse<T>;
export declare function isServiceResponse<T>(sr: any): sr is IServiceResponse<T>;