import { WorldTracker } from '@zappar/zappar';
import { WorldTrackingAnchorGroup } from './worldtrackinganchorgroup.js';
import { Camera } from '../camera.js';
/**
 * A THREE.Group which attaches content to a point in the world as it moves around in the camera view.
 * @see https://docs.zap.works/universal-ar/web-libraries/threejs/world-tracking/
 */
export declare class WorldAnchorGroup extends WorldTrackingAnchorGroup {
    /**
     * Constructs a new WorldAnchorGroup.
     * @param camera - A ZapparThree.Camera.
     * @param worldTracker - The world tracker which will be used.
     */
    constructor(camera: Camera, worldTracker: WorldTracker);
}