export declare function isConnectionRefusedError(error: unknown): boolean;
export declare function isAxiosError(error: unknown): boolean;
export declare function httpStatusFromError(error: unknown): number | undefined;
export interface HttpRequestError extends Error {
    code?: string;
    response?: {
        status?: number;
        data?: unknown;
    };
}
export declare function markHttpRequestError<E>(error: E): E;
export declare function isHttpRequestError(error: unknown): error is HttpRequestError;