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