Function parseCron

src/schedule/cron.ts:50–59

(expr: string)

}

export function parseCron(expr: string): CronExpression {
  const trimmed = expr.trim();
  const aliased = ALIASES[trimmed.toLowerCase()] ?? trimmed;
  const parts = aliased.split(/\s+/);
  if (parts.length !== 5) {
    throw new Error(`Invalid cron expression "${expr}" — expected 5 fields, got ${parts.length}`);
  }
  const fields = parts.map((p, i) => parseField(p, FIELD_RANGES[i]!, i));
  return { raw: expr, fields };
}

function parseField(field: string, [min, max]: [number, number], idx: number): Set<number> {
  const out = new Set<number>();