import { ErrorLike } from '@workbench-stack/extension-api';
interface AggregateError extends Error {
    name: 'AggregateError';
    errors: Error[];
}
export declare const createAggregateError: (errors?: ErrorLike[]) => AggregateError;
export declare const normalizeAjaxError: (err: any) => void;
export declare const isErrorLike: (val: any) => val is ErrorLike;
export {};
