I would like to recompile the javascript files easysocial-x.x.x.static.js

I have used EasySocial to build a new social platform and did a lot of customization which could not be built using the described method of extending easysocial and I really like the way things are setup from a coding perspective. I changed several files in de /media/com_easysocial/scripts/ folder to my needs and would like to compile these changes into a new easysocial-x.x.x.static.js. I don't use the updates and know I loose support from you by not updating but simply put, I cann't anyways due to the heavy customization. I see that the Foundry framework is able to compile the javascript files and I was hoping you could tell me how to initiate that? It looks some CLI files are missing for this but if you can give me some pointers as to how to do this I would really appreciate that!!