Hi, @ElMassimo after our discussion #10 I found the problem.
It was because my app uses the convention of reduced controller identifiers that's why stimulus-vite-helper didn't work for me.
In this PR I suggest a simple additional parameter {nestedMode: true} for registerControllers function which allows reducing controller identifiers when the last part of their name is duplicated because of the sidecar folders structure

//├ components
//│ └ ui/
//│   └ button_component/
//│     └ button_component_controller.js

registerControllers(application, controllers);
// default
//=> ui--button-component--button-component

registerControllers(application, controllers, { nestedMode: true });
// reduced
//=> ui--button-component