/**
 * Creates a function that memoizes the result of 'fn'.
 *
 * @param {function} fn The function to have its result memoized.
 * @param {function} [toKey] Function to resolve the cache key.
 *
 * @returns {function} Returns the new memoized function.
 */
export default function createMemoized(fn: Function, toKey?: Function): Function;