A lightweight, dependency-free (core) JavaScript task scheduler supporting Cron expressions and Web Workers.

Features

• 🚀 Cross-platform: Works in Node.js and Browser.
• ⏰ Precise Timing: Uses Web Workers in browser to avoid background throttling.
• 🏷️ Namespaces: Isolate tasks into logical groups for batch control.
• ⚡ Immediate Trigger: Option to execute tasks immediately upon start.
• 🛠 Debuggable: Built-in debug panel and CLI output.
• 📦 Tiny: < 20KB gzipped.

DevTools

Quick Start

npm install hyper-scheduler

import { Scheduler } from 'hyper-scheduler';

const scheduler = new Scheduler({ debug: true });

// Standard task
scheduler.createTask({
  id: 'hello',
  schedule: '*/5 * * * * *',
  handler: () => console.log('Hello World')
});

// Task in a namespace with immediate execution
scheduler.createTask({
  id: 'system-check',
  schedule: '1h',
  handler: () => console.log('System Check'),
  options: {
    namespace: 'system',
    runImmediately: true
  }
});

scheduler.start();
// Or start only 'system' namespace: scheduler.start('system');

See Documentation for more details.