/**
 * Recursively freeze an object and all nested objects.
 * Uses breadth-first traversal with a queue for memory efficiency.
 * @throws {Error} When object graph too large or circular reference detected.
 */
declare function recursiveFreeze<T>(value_: T): T;
/**
 * Check if value is a non-null object.
 * Inlined to avoid importing @socketsecurity/lib/objects which transitively
 * pulls in sorts → semver → npm-pack (2.5 MB).
 */
declare function isObject(value: unknown): value is {
    [key: PropertyKey]: unknown;
};
export { isObject, recursiveFreeze };