Proactive Telegram Bot Messaging with Telegraf.js

Other Questions Telegram bot
1

Using Node.js and Telegraf.js, how can I monitor a file change and send a chat message immediately? See sample code below.

const BotFramework = require('telegraf');
const fileWatcher = require('fs');

const telegramBot = new BotFramework(process.env.MY_TELEGRAM_TOKEN);

fileWatcher.watch('monitor_file.txt', () => {
  const data = fileWatcher.readFileSync('monitor_file.txt', 'utf8');
  telegramBot.telegram.sendMessage('CHAT_ID', data);
});
2

Based on my experience, using fs.watch can work well in simple scenarios, but it might introduce issues on certain platforms due to its inconsistent behavior. A more robust approach I’ve implemented involves tools like chokidar, which make file monitoring more reliable. Additionally, considering asynchronous file operations might yield better performance in a production environment. By reading the file asynchronously and properly handling errors, you can prevent blocking the event loop and ensure that the bot remains responsive. These changes improved the stability of my bot significantly.