/**
 * Return last element
 * @private
 * @param {(Array<any>)} array
 * @returns object | undefined
 */
export declare const lastOf: (array: Array<any>) => any;
/**
 * Return first element
 * @private
 * @param {(Array<any>)} array
 * @returns object | undefined
 */
export declare const firstOf: (array: Array<any>) => any;