Vein is an immediate mode GUI library for FiveM

resources/ directoryensure vein to server.cfgconst vein = exports.vein;
vein.beginFrame();
if (vein.button('Click Me'))
console.log('Hello World!');
vein.endFrame();
Visit Vein website for documentation
Follow Vein demo as an example for your own GUI.
Run it as FiveM server resource to see how Vein looks like in game (use /veinDemo command)