/**
 * This class represents errors thrown by _Angular HAL Client_. It
 * unifies errors produced by _Angulat HTTP Client_ and errors originating
 * in the API.
 */
export declare class HalError extends Error {
    /**
     * The URI path where the error originated.
     */
    path?: string;
    /**
     * The HTTP status code of the error.
     */
    status?: number;
    /**
     * The description of the HTTP status.
     */
    error?: string;
    /**
     * XXX.
     */
    [key: string]: any;
    /**
     * @param err the object used to set properties
     */
    constructor(err: any);
}