/**
 * @des  数字格式化 十位补0
 * @param {number | string} num
 * @returns {string}
 *
 * @example
 * ```js
 * fillZeroToTen(0) // "00"
 * fillZeroToTen(9) // "09"
 * fillZeroToTen(23) // "23"
 * ```
 */
export declare function fillZeroToTen(num: number | string): string;
/**
 * @description 按照size 对数组 arr 进行分组
 * @param {any[]} arr
 * @param {number} size
 * @returns
 */
export declare function chunkBySize(arr: any[], size: number): any;