This is a plugin for JoJoAPI that allows for the merging of XFBIN data, currently only via JSON, although as more file support is added, other formats will be used as well.
Right now, you can only merge some nuccChunkBinary formats. These are:
Many more are to come, so sit tight!
Creating merge files is quite simple, as you just need to write the data you want to target in a JSON file. See the Formats section for how to structure those correctly. You will also see a Directory under each section, indicating where those JSON files should go, like so:
_priority.json simply controls which files get loaded in which order, and will update itself to add/remove new/old JSON files whenever you launch the game (and this activate the plugin). A higher priority number means that file takes higher precedence over others lower than it, since it will get loaded later and therefore overwrite the data that came before it.