/**
 * Safely clones an object.
 * Tries modern fast `structuredClone` first.
 * Falls back to `JSON.parse(JSON.stringify())` if the object contains
 * non-cloneable items like Functions, DOM nodes, or complex Proxies,
 * which guarantees backward compatibility with old stripping behavior.
 */
export declare function safeClone<T>(val: T): T;