@lucid-softworks/queue-cron

Strict five-field UTC cron parsing, matching, and next-occurrence calculation.

import {
  nextQueueCronOccurrence,
  parseQueueCron,
} from "@lucid-softworks/queue-cron";

const schedule = parseQueueCron("*/15 9-17 * * 1-5");
const next = nextQueueCronOccurrence(schedule, Date.now());

Fields support numeric wildcards, lists, ascending ranges, and steps. Weekday 7 aliases Sunday 0. Matching uses minute, hour, day-of-month, month, and weekday together. Search is minute-based and bounded by maxMinutes.