import { Joi } from '../helpers';
export declare const errorInfoSchema: Joi.ObjectSchema<IErrorInfo>;
export interface IErrorInfo {
    status: string;
    message: string;
    details?: IErrorDetails;
}
export interface IErrorResponse {
    error: IErrorInfo;
}
export interface IErrorDetails {
    [key: string]: string | number | undefined;
}
export declare type OptionalResponse<T, E = {}> = T | (E & IErrorResponse);
export declare type WhenNoError<T> = Exclude<T, IErrorResponse>;
export declare type WhenError<T> = Extract<T, IErrorResponse>;
export declare function isErrorResponse<T>(response: T): response is Extract<T, IErrorResponse>;
export declare function isSuccessResponse<T>(response: T): response is Exclude<T, IErrorResponse>;
export declare const addErrorDetails: (incomingError: IErrorInfo, details?: IErrorDetails | undefined) => IErrorInfo;