JTransc has a maven plugin that hooks the package maven phase and transcompiles all the code into the target app. Since you can call maven from console I just wanted to debug easily on intelliJ. It ended being pretty easy.
Instead of calling
mvn command, there is a
It will be waiting, listening to port
8000 by default.
In intelliJ you must create a Remote run configuration, and just have to change the port to
8000. While mvnDebug is waiting you can execute the run configuration. And breakpoints should just work, if you have the sources of the plugin.