import { Object3D } from 'three';
import { Ref } from '@vue/reactivity';
export declare function getOrCreateUserDataRef(object3D: Object3D, userDataName: string): Ref<number>;
export declare function _createObjectUserDataRef(object3D: Object3D, userDataName: string): Ref<number>;
export declare function _dummyReadUserDataRefVal(value: number): void;
export declare function touchObjectUserData(object3D: Object3D, userDataName: string): void;