import type { Object3D } from 'three/webgpu';
export type SceneExportFormat = `stl` | `obj` | `glb`;
export declare function generate_mtl_content(scene: Object3D): string;
export declare function convert_instanced_meshes_to_regular<T extends Object3D>(scene: T): T;
export declare function export_scene_as(scene: Object3D, format: SceneExportFormat, basename: string): Promise<void>;