cron-schedule

import { parseCronExpression, createCronScheduler } from 'cron-schedule'; // 1. Parsing a cron expression and calculating future dates const cronExpressionString = '0 0 * * MON-FRI'; // At 00:00 on every weekday (Monday through Friday) const cron = parseCronExpression(cronExpressionString); const startDate = new Date('2026-04-21T00:00:00.000Z'); // A Monday for demonstration console.log(`Starting date: ${startDate.toISOString()}`); const nextDate = cron.getNextDate(startDate); console.log(`Next scheduled date: ${nextDate.toISOString()}`); const nextFiveDates = cron.getNextDates(5, startDate); console.log('Next five scheduled dates:'); nextFiveDates.forEach((date, index) => { console.log(` ${index + 1}: ${date.toISOString()}`); }); // 2. Setting up a basic scheduler (note: this only sets it up, it won't run in a short-lived script) // In a real application, this would run indefinitely in a Node.js process. const dailyJob = createCronScheduler('0 0 * * *', () => { console.log(`Daily job executed at ${new Date().toISOString()}`); }); console.log('\nScheduler for "0 0 * * *" created (runs daily at midnight). It will execute in a long-running process.'); // To prevent the quickstart from hanging, we'll stop it immediately for demo purposes. dailyJob.stop(); console.log('Scheduler stopped immediately for quickstart demonstration.');