three.js/src/renderers/webvr/WebXRManager.d.ts

import { Group } from '../../objects/Group';
import { Camera } from '../../cameras/Camera';

export interface WebXRManager {
	enabled: boolean;
  getController( id: number ): Group;
  setFramebufferScaleFactor( value: number ): void;
  setReferenceSpaceType( value: string ): void;
  getSession(): any;
  setSession( value: any ): void;
  getCamera( camera: Camera ): Camera;
  isPresenting: () => boolean;
  setAnimationLoop( callback?: Function ): void;
  dispose(): void;
}