Ender-Shulker-Barrel Exchanger is a datapack that allows you to swap the contents of ender chest, shulker box and barrel instantly.
Note: This datapack is for Minecraft 1.17+ or it's snapshots after 20w51a. This pack does not works with empty shulker boxes.
# How to use
1. Put an item frame on a barrel, it could be on any sides.
2. For ender chest swapping mode, put an ender chest in the item frame.
3. For shulker box swapping mode, put a shulker box in the item frame.
4. Right click the center of the item frame to swap the box's or the chest's content with the barrel.
5. If 4 does not works, try again or try changing your angle and try again.