Sulla
Javascript Whatsapp API library for chatbots
... executing create() function, sulla will create an instance of WhatsApp web. If you are not logged in, it will print a QR code in the terminal. Scan it with your phone and you are ready to go! Sulla will remember the session so there is no need to authenticate every time. By default QR code will appear on the terminal. The decryption is being done as fast as possible (outruns native methods). Supports big files!