For a basic WhatsApp bot on Termux, you can use the following example code:

app.post('/send', (req, res) => { // Send a message using the WhatsApp Business API });

app.use(bodyParser.json());

const client = new whatsapp.Client({ // Your WhatsApp Business API key accessToken: 'your_access_token', });

client.on('message', (message) => { // Handle incoming messages });