import { Options, ParseOptions, Unit } from "./types.js";
/**
 * Converts an array of numbers to a part of a cron string
 *
 * @param arr An array of numbers to convert
 * @param unit The unit for the part
 * @param options The formatting options to use
 * @return The part of a cron string
 */
export declare const arrayToStringPart: (arr: number[], unit: Unit, options: Options) => string;
/**
 * Converts a part of a cron string to an array of numbers
 *
 * @param str The part of a cron string to convert
 * @param unit The unit for the part
 * @param options The parse options
 * @return An array of numbers
 */
export declare const stringToArrayPart: (str: string, unit: Unit, options: ParseOptions) => number[];