/**
 * Minimal cron parser / evaluator. Supports the subset used in
 * config/cortex.yaml adapter schedules:
 *
 *   *            any
 *   N            exact value
 *   N,M,O        list
 *   A-B          range (inclusive)
 *   *\/N          step (every N)
 *
 * Fields: minute hour dayOfMonth month dayOfWeek
 *   minute      0-59
 *   hour        0-23
 *   dayOfMonth  1-31
 *   month       1-12
 *   dayOfWeek   0-6  (0 = Sunday)
 *
 * Month and day-of-week as names aren't supported; they're never used
 * in adapter schedules so no point.
 */
export interface CronSchedule {
    minute: (n: number) => boolean;
    hour: (n: number) => boolean;
    dayOfMonth: (n: number) => boolean;
    month: (n: number) => boolean;
    dayOfWeek: (n: number) => boolean;
    source: string;
}
export declare function parseCron(expr: string): CronSchedule;
/**
 * Return the next time-of-next-firing strictly after `from`. Walks
 * minute-by-minute; every adapter runs once per match.
 *
 * Upper bound of 366 * 24 * 60 iterations before we bail — catches
 * truly unmatchable schedules (e.g. dayOfMonth=31 month=2).
 */
export declare function nextFireAfter(schedule: CronSchedule, from: Date): Date;
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