/**
 * @packageDocumentation
 * @module Array
 */
import { OperatorFunction } from 'rxjs';
/**
 * Returns an Observable that emits an array taking a source array and randomly shuffling the elements
 *
 * @category Modify
 *
 * @typeParam T Item type contained in the Array or Set
 *
 * @example
 * Return a randomly shuffled array
 * ```ts
 * const input = [1, 2, 3, 4, 5, 6];
 * of(input).pipe(shuffle()).subscribe();
 * ```
 * Output: `[4, 2, 5, 1, 6, 3]`
 *
 * @returns Observable that emits an array of values shuffled from the source array
 */
export declare function shuffle<T extends unknown>(): OperatorFunction<Iterable<T>, T[]>;