/// <reference types="webxr" />
export type XRSessionEventType = 'sessionstart' | 'sessionend' | 'visibilitychange' | 'frameratechange';
export type XRControllerEventType = 'select' | 'selectstart' | 'selectend' | 'squeeze' | 'squeezeend' | 'squeezestart' | 'disconnected' | 'connected';
export type XRHandEventType = 'pinchstart' | 'pinchend' | 'connected' | 'disconnected';
export type XRSessionEvent<Type = XRSessionEventType> = THREE.Event & {
    type: Type;
    target: XRSession;
};
export type XRControllerEvent<Type = XRControllerEventType> = THREE.Event & {
    type: Type;
    target: any;
    data?: XRInputSource;
};
export type XRController = {
    controller: THREE.XRTargetRaySpace;
    grip: THREE.XRGripSpace;
    inputSource: XRInputSource;
};
export type XRHand = {
    hand: THREE.XRHandSpace;
    inputSource: globalThis.XRHand;
};
export type XRHandEvent<Type = XRHandEventType, Target = null | THREE.XRHandSpace> = THREE.Event & {
    type: Type;
    target: Target;
};
export type HitTestCallback = (hitMatrix: THREE.Matrix4, hit: XRHitTestResult) => void;