import { Object3D } from "three";
import type { IUSDExporterExtension } from "../Extension.js";
import { USDObject, USDZExporterContext } from "../ThreeUSDZExporter.js";
export declare class USDZUIExtension implements IUSDExporterExtension {
    get extensionName(): string;
    onExportObject(object: Object3D, model: USDObject, _context: USDZExporterContext): void;
    private flipWindingOrder;
}