/**
 * Returns the first item of an array
 * @param  {Array} array The array.
 * @returns {any}
 */
export declare const first: (array?: any[]) => any;
/**
 * Returns the last item of an array
 * @param   {Array} array The array.
 * @returns {any}
 */
export declare const last: (array?: any[]) => any;
/**
 * Returns a random item from an array
 *
 * @param   {Array} array The array.
 * @returns {any}
 */
export declare const random: (array?: any[]) => any;
/**
 * Determines if an array contains an item. Small polyfill for Array.includes.
 *
 * @param   {Array} array The array.
 * @param   {any} item The item to match.
 * @returns {boolean} The result.
 */
export declare const includes: (array: any[] | undefined, item: any) => boolean;