This is a mod that enables usage of the Javscript programming language and debugger tools for Fabric mods.
This is still being developed and tested. If you have any issues or are missing any features, please contact me on discord
For an example mod please checkout this github repo
Roadmap
- Debugging directly in the code (VsCode or Intellij)
- Support mixins
- Custom registries (new blocks, items, entities, GUIs)
- Client-side rendering
- Networking — custom packets between client/server.
ThreadJS weaves JavaScript into Fabric.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.11
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Verified by MCModsHub
- Ships as threadjs-0.0.1.jar — drop this file into the mods folder
- Download size: 34.7 MB
- Download link checked 10 Sept 2026 — working
These come from our own check of the pack file, not from the source page.