General info
Minecraft uses loot tables to determine which items you can get in different scenarios (wiki page). This mod adds a new category to Roughly Enough Items, showing them.
Supported types:
+Piglin bartering
+Dungeon chests
+Fishing
+Gifts
+Advancements
Not supported (because they are too numerous + there exists another addon showing them):
-Block drops
-Entity drops
Reading jsons
In the lower right corner you can see a button "J", which stands for "open .Json representation". It dumps a loot table into a temporary file and opens it in a default text editor. If nothing opens, check logs.
Dependencies
This mod is common, meaning it must be installed on both client and server.
Fabric Language Kotlin is required on both sides
Roughly Enough Items is only required on client