import StepEntityBase from "../step/step_entity_base.js";
import EntityTypesIfc from "./ifc4_gen/entity_types_ifc.gen.js";
import { IfcMaterialCache } from "./ifc_material_cache.js";
/**
 * Dump the OBJs in this to a particular folder
 *
 * @param from
 * @param folder The folder to dump to
 * @return {Promise<void>} A promise to wait on when this completes.
 */
export declare function dumpMTLs(from: IfcMaterialCache, folder: string): Promise<void>;
/**
 * Build a set of hashes with their matching IFC curves.
 *
 * @param from
 * @yields {[StepEntityBase, Uint8Array]} A list of curves with
 * their corresponding hash.
 */
export declare function materialHashes(from: IfcMaterialCache): IterableIterator<[
    StepEntityBase<EntityTypesIfc>,
    Uint8Array
]>;
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