Example of a telegram bot responding anything using webtasks

handler-first.js

'use strict';

module.exports = (context, cb) => {
    const TelegramBot = require('node-telegram-bot-api');

    const token = "YOUR_API_TOKEN";
    const bot = new TelegramBot(token);
    const chatId = context.body.message.chat.id;

    const out = bot.sendMessage(chatId, 'Hello World!');
    return cb(null, out);
};