export interface CronFieldMatcher {
    matches(value: number): boolean;
}
export interface ParsedCronExpression {
    minute: CronFieldMatcher;
    hour: CronFieldMatcher;
    dayOfMonth: CronFieldMatcher;
    month: CronFieldMatcher;
    dayOfWeek: CronFieldMatcher;
}
export declare function parseCronExpression(expression: string): ParsedCronExpression;
export declare function validateCronExpression(expression: string): string | null;
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