import { Document } from '@gltf-transform/core';
export interface MetalRoughOptions {
}
/**
 * Converts a spec/gloss PBR workflow to a metal/rough PBR workflow, relying on the IOR and
 * specular extensions to base glTF 2.0.
 */
export declare function metalRough(_options?: MetalRoughOptions): (doc: Document) => Promise<void>;