- Loaders
- Fabric
- Downloads on Modrinth
- 250
- Followers on Modrinth
- 0
- version
- 1
- Updated
- February 20, 2026Feb 20
- Published
- in 2025
At a glance
A library: other mods need it
Runs on Fabric
For Minecraft 1.21.11
Works on either side — install it in the game, on the server, or both
Latest version — 0.0.1 from February 20, 2026
License CC-BY-4.0 — free
Where it's neededGame versions1.21.11
In gameoptionalOn serveroptional
Works both in the game and on the server — install where you need it
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.
FAQ
How to install Thread.JS?
Install Fabric for your Minecraft version, download Thread.JS for the same version and loader, put the file into the mods folder and launch the game with the loader profile.
Which Minecraft versions does Thread.JS support?
Thread.JS has builds for Minecraft 1.21.11.
Is Thread.JS needed on the server?
Works on either side — install it in the game, on the server, or both
License and source
Creative Commons Attribution 4.0 Internationalfree to share with credit to the author and the license
