export type CronFields = {
    minute: number[];
    hour: number[];
    dom: number[];
    month: number[];
    dow: number[];
    domStar: boolean;
    dowStar: boolean;
};
export declare function parseCronExpression(expr: string): CronFields | null;
export declare function computeNextCronRun(expr: string, from: Date): Date | null;
export declare function cronToHuman(expr: string): string;