Returning objects with lua functions

[SirEndii]

Greetings
After more than four years of CC Addon development, I struggle to return an object to the user containing Lua functions

I am currently re-writing a lot of our RS and ME Bridge logic, including craft jobs. My idea was to return an object which contains functions to track the status of the job

https://github.com/IntelligenceModding/AdvancedPeripherals/blob/f87ff2938883b35ea41aed4e25adce7df3b8712e/src/main/java/de/srendi/advancedperipherals/common/addons/ae2/CraftJob.java#L69-L81

The javadocs of MethodResult say

In order to provide a custom object with methods, one may return a IDynamicLuaObject, or an arbitrary class with LuaFunction annotations. Anything else will be converted to nil.

So I did that

https://github.com/IntelligenceModding/AdvancedPeripherals/blob/f87ff2938883b35ea41aed4e25adce7df3b8712e/src/main/java/de/srendi/advancedperipherals/common/addons/computercraft/peripheral/MeBridgePeripheral.java#L588-L591

But every time I just get an empty table returned

print("Crafting x64 stick")
job = bridge.craftItem({name="minecraft:stick", count=32})
print(textutils.serialiseJSON(job))

I've tried to make the functions mainThread, I tried to mark the class as final
But I am not sure what I am missing here

[SquidDev]

Ahh, it looks like this is on your 1.19.2 branch? I'm afraid you're probably bumping into dan200/ComputerCraft#125, which causes functions to be stripped when returned from a main-thread method.

This has since been fixed (e7fe22d), but I'm afraid only in Minecraft 1.19.3+.