Configuration Interfaces 
XRDeviceConfig 
- name: string
 The name of the XR device.
- controllerConfig: XRControllerConfig | undefined
 Configuration for the device's controllers. It is- undefinedif no controllers are used.
- supportedSessionModes: XRSessionMode[]
 Session modes the device supports (e.g.,- inline,- immersive-vr,- immersive-ar).
- supportedFeatures: WebXRFeatures[]
 Features supported by the device, such as- hand-tracking,- hit-test, etc.
- supportedFrameRates: number[]
 Frame rates supported by the device for rendering.
- isSystemKeyboardSupported: boolean
 Indicates if system keyboard input is supported.
- internalNominalFrameRate: number
 The device's nominal internal frame rate.
XRDeviceOptions 
- ipd: number
 Interpupillary distance in meters, affecting stereo rendering.
- fovy: number
 Field of view on the Y-axis in radians.
- stereoEnabled: boolean
 Enables or disables stereo rendering.
- headsetPosition: Vector3
 The initial position of the headset in 3D space.
- headsetQuaternion: Quaternion
 The initial orientation of the headset.
- canvasContainer: HTMLDivElement
 The HTML container for the rendering canvas.
XRControllerConfig 
- profileId: string
 Identifier for the controller profile.
- fallbackProfileIds: string[]
 Identifiers for fallback controller profiles.
- layout: { [handedness in XRHandedness]?: { gamepad: GamepadConfig; gripOffsetMatrix?: mat4; numHapticActuators: number; } }
 Maps handedness to controller configurations, including gamepad layout and optional grip offset.
HandPose 
- jointTransforms: { [joint in XRHandJoint]: { offsetMatrix: mat4; radius: number; } }
 Pose data for each joint in the hand, including transformation matrix and joint radius.
- gripOffsetMatrix: mat4?
 Optional matrix to offset the grip position.
XRHandInputConfig 
- profileId: string
 Identifier for the hand input profile.
- fallbackProfileIds: string[]
 Identifiers for fallback hand input profiles.
- poses: { default: HandPose; pinch: HandPose; [poseId: string]: HandPose; }
 Contains hand pose configurations for default, pinch, and additional customizable poses.