
FilesJS
Allow you to use kubejs for some restrictive operations on files
Screenshots

About this Mod
This is a plugin mod for kubejs that allows you to perform limited operations on files using kubejs.
The file reading and writing can only be done within the instance folder of Minecraft, and external file contents cannot be accessed.
Write multiple lines
FilesJS.writeLines("kubejs/server_scripts/src/test.js", ["test1,test2,test3"])
Delete file
FilesJS.delete("kubejs/server_scripts/src/test.js")
Change event trigger
ItemEvents.rightClicked('nether_star',event=>{
FilesJS.backupFile("kubejs/README.txt")
})
Files.fileBackupCreated(event=>{
event.server.tell("File backup path:",event.getPath())
})
You can't even access the mods folder!
Compared to directly accessing file content, this mod considers various security issues and restricts access to special extensions
Available Versions
How to Install FilesJS on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set forge Loader
In the panel under "Egg", select the forge loader and matching Minecraft version (1.21.4).
Install Mod
Open the mod browser in the dashboard and search for "FilesJS". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.4, 1.21.3, 1.21.2 (+8 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
FilesJS server crashes on startup – what to do?
Most common cause: wrong forge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.4). You can switch loaders with one click in the panel.
Is FilesJS compatible with forge?
FilesJS officially supports forge for Minecraft 1.21.4, 1.21.3, 1.21.2. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with FilesJS – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if FilesJS consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
Rent Modded Server
Install FilesJS with just one click on your server.