export declare class XSseProxyError extends Error {
    statusCode?: number;
    statusText?: string;
    response?: any;
    errorCode?: string | number;
    constructor(message?: string, options?: {
        cause?: any;
        errorCode?: string;
    });
    /**
     *
     * @param message error message
     * @param res response
     * @param errcode bizcode
     * @returns XSseProxyError
     */
    static createError(message: string, res?: Response | null, errcode?: string | number): XSseProxyError;
    /**
     *
     * @param ex maybe BizException extends Error
     * @returns XSseProxyError
     */
    static fromException(ex?: any): XSseProxyError;
}