export declare class HttpError extends Error {
  status: number;
  errorCode?: number;
  constructor(message: string, status: number, errorCode?: number);
}
export declare class UnauthorizedError extends HttpError {
  constructor(message: string, errorCode?: number);
}
export declare class ReferenceError extends Error {
  friendlyMessage: string;
  isReferenceError: boolean;
  originalError: Error;
  constructor(message: string, friendlyMessage: string, isReferenceError: boolean, originalError: Error);
}