Your best bet for now might be to use the Web IDE's 'projects' feature to set up a local directory, and to then copy http://www.espruino.com/modules/MQTT.js into there, and to try and delete any functions you don't need.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Hi Rocco,
Your best bet for now might be to use the Web IDE's 'projects' feature to set up a local directory, and to then copy http://www.espruino.com/modules/MQTT.js into there, and to try and delete any functions you don't need.