/**
 * Create a function for memoizing values.
 *
 * The cache accepts a factory function which is used for creating a value. If cache is called with
 * the value, the factory is called and the returned value is memoized. If the cache is called with
 * the same value again, the memoized value is returned.
 *
 * @param factory The function that generats new values if necessary.
 * @returns A getter funcion which returns the generated or memoized value.
 */
export declare function objectCache<T, K = string>(factory: (id: K) => T): (id: K) => T;