I have a working build for fabric 1.18-pre5 that a contributor may find useful. Unfortunately it will bork the non-fabric builds so I am not creating a PR just yet. Based on the structure of the code I could not find a simple way to support running in a dev environment and from a jar using intermediate names. Rewriting of the framework detection (mcp/fabric/forge/vanilla) may be required. Or just create a seperate branch for each.

You can find the code here: https://github.com/Stelk/MouseTweaks/tree/minecraft-fabric-1.18-pre
artifact: https://github.com/Stelk/MouseTweaks/releases/download/fabric/MouseTweaks-fabric-mc1.18-pre5-2.16.jar

Hello! Interesting, thanks for the link!

I deliberately used official mappings instead of yarn since they work with both Forge (since 1.17) and Fabric letting me support both with one code-base easily. I think it makes the most sense to stick to the official mappings for this reason.

Cool, I'll revert to the official mappings and see how that changes things.. I'm new to MC modding and was blindly following the Yarn remapping instructions. https://fabricmc.net/wiki/tutorial:migratemappings

I updated to 1.18 here: 695d397