import { Matrix4, Quaternion } from 'three';
import type { IGameObject } from '../engine_types.js';
import type { IXRRig } from './XRRig.js';
export declare const flipForwardMatrix: Matrix4;
export declare const flipForwardQuaternion: Quaternion;
export declare class ImplictXRRig implements IXRRig {
    priority: number;
    gameObject: IGameObject;
    isXRRig(): boolean;
    get isActive(): boolean;
    constructor();
}