The IDE shouldn't cache the module... Are you serving it from a website somewhere? It could be that the website doesn't transfer it with the no-cache headers so something along the line (maybe even just Chrome) is cacheing it for you.
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.
The IDE shouldn't cache the module... Are you serving it from a website somewhere? It could be that the website doesn't transfer it with the no-cache headers so something along the line (maybe even just Chrome) is cacheing it for you.