/** @module 数组-array */
/**
 * 求数组并集
 *
 * @param {Array} a
 * @param {Array} b
 */
export declare function unionArr(a: any[], b: any[]): any[];
/**
 * 求数组交集
 *
 * @param {Array} a
 * @param {Array} b
 */
export declare function intersectArr(a: any[], b: any[]): any[];
/**
 * 求数组差集
 *
 * @param {Array} a
 * @param {Array} b
 */
export declare function differenceArr(a: any[], b: any[]): any[];
