/**
 * Copies plain objects, arrays and Dates, preserving cycles, shared references,
 * sparse arrays and null prototypes. Other values (including class instances,
 * Files, Maps and Sets) retain their identity.
 *
 * Enumerable own string/symbol properties are read and copied as writable data
 * properties; accessors, non-enumerable properties and descriptors are not cloned.
 */
export declare function deepClone<T>(value: T): T;