I downloaded draw.io source files from the github repository and tried to make some minor changes to the import function, but all the sources are minified (especially app.min.js). So my question is this: is there any way to debug the code with the unminified sources? Also I tried to pass inside the query string the param dev=1, but it gives some errors and doesn't manage to load.
I already saw the post Draw.io — Is there non-minified source? but I don't know how to build draw.io.