/**
 * Minimal cron expression parser and scheduler.
 * Replaces the unmaintained `later` package with Node built-ins.
 *
 * Supports 5-field (minute hour day-of-month month day-of-week) and
 * 6-field (with a leading seconds) expressions. Each field accepts
 * wildcard, step, single value, range, range-with-step and
 * comma-separated lists. All times are interpreted in local time,
 * matching the previous `later.date.localTime()` default.
 */
type CronField = 'second' | 'minute' | 'hour' | 'dayOfMonth' | 'month' | 'dayOfWeek';
type CronSchedule = Partial<Record<CronField, Set<number>>>;
/**
 * Parse a cron expression into a schedule of Sets.
 */
export declare const parseCron: (expression: string, useSeconds?: boolean) => CronSchedule;
/**
 * Compute the next run date strictly after `from` that matches the schedule.
 */
export declare const getNextRun: (schedule: CronSchedule, from?: Date) => Date;
/**
 * Run `callback` on `schedule` until the returned handle is cleared.
 */
export declare const setCronInterval: (callback: () => void, schedule: CronSchedule) => {
    clear: () => void;
};
export {};