import { ErrorPOJO, OnoError } from "./types";
/**
 * Extends the new error with the properties of the original error and the `props` object.
 *
 * @param newError - The error object to extend
 * @param originalError - The original error object, if any
 * @param props - Additional properties to add, if any
 */
export declare function extendError<T>(newError: OnoError<T>, originalError?: ErrorPOJO, props?: object): void;