/**
 * Extract skin data from a glTF document.
 * Reads inverse bind matrices, joint node indices, parent hierarchy, and names.
 */
import type { GltfDocument } from './gltf-parser.js';
import type { ModelSkin } from './types.js';
/**
 * Extract all skins from the glTF document.
 * Each skin maps joint nodes → inverse bind matrices + pre-computed parent chain.
 */
export declare function extractSkins(doc: GltfDocument): ModelSkin[];
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