import type { ParsedCron } from "../cronTypes.js";
/**
 * Parses a 5-field cron expression into its components.
 *
 * Expects: cron expression string with format "minute hour day month weekday".
 * Returns: ParsedCron object or null if the expression is invalid.
 */
export declare function cronExpressionParse(expression: string): ParsedCron | null;
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