const TelegramBot = require('node-telegram-bot-api'); // replace the value below with the Telegram token you receive from @BotFather const token = 'YOUR_TELEGRAM_BOT_TOKEN'; // Create a bot that uses 'polling' to fetch new updates const bot = new TelegramBot(token, {polling: true}); // Matches "/echo [whatever]" bot.onText(/\/echo (.+)/, (msg, match) => { // 'msg' is the received Message from Telegram // 'match' is the result of executing the regexp above on the text content // of the message const chatId = msg.chat.id; const resp = match[1]; // the captured "whatever" // send back the matched "whatever" to the chat bot.sendMessage(chatId, resp); }); // Listen for any kind of message. There are different kinds of // messages. bot.on('message', (msg) => { const chatId = msg.chat.id; // send a message to the chat acknowledging receipt of their message bot.sendMessage(chatId, 'Received your message'); });