/**
 * Creates an array of shuffled values using a version of the Fisher-Yates shuffle.
 *
 * @param array - The array to shuffle
 * @returns The shuffled array
 */
export declare function shuffle<T>(array: T[]): T[];
/**
 * Gets a random element from an array.
 *
 * @param array - The array to sample from
 * @returns The sampled element
 */
export declare function sample<T>(array: T[]): T | undefined;
/**
 * Gets `n` unique random elements from an array.
 *
 * @param array - The array to sample from
 * @param n - The number of elements to sample
 * @returns The sampled elements
 */
export declare function sampleSize<T>(array: T[], n?: number): T[];