import type { Loop, ScheduleSpec } from "../types.js";
interface ParsedCron {
    minute: Set<number>;
    hour: Set<number>;
    dom: Set<number>;
    month: Set<number>;
    dow: Set<number>;
    domRestricted: boolean;
    dowRestricted: boolean;
}
export declare function parseCron(expr: string): ParsedCron;
export declare function nextCronRun(expr: string, from: Date): Date;
export declare function initialNextRun(schedule: ScheduleSpec, from?: Date): string;
export declare function computeNextAfter(schedule: ScheduleSpec, scheduledFor: Date, finishedAt: Date): string | undefined;
export interface DuePlan {
    slots: string[];
    skippedToNextRunAt?: string;
}
export declare const MAX_CATCH_UP_SLOTS = 1000;
export declare function dueSlots(loop: Loop, now: Date): DuePlan;
export declare function parseDuration(input: string): number;
export {};