import { ServiceResponse, ServiceError } from '../interfaces/common';
declare function isErrorResponse(response: ServiceResponse): response is Required<ServiceResponse>;
declare function isError(error: any): error is Required<ServiceError>;
declare function isFieldError(error: ServiceError): error is Required<ServiceError>;
declare const APIUtil: {
    isErrorResponse: typeof isErrorResponse;
    isError: typeof isError;
    isFieldError: typeof isFieldError;
    isSuccessfulResponse: (response: ServiceResponse) => boolean;
};
export default APIUtil;