import * as THREE from 'three';
import { BaseExtension } from './base';
import type { Parser } from '../parser';
/**
 * Specification: https://github.com/KhronosGroup/glTF/tree/main/extensions/2.0/Khronos/KHR_texture_basisu
 */
export declare class KHR_texture_basisu extends BaseExtension {
    loadTexture(index: number, parser: Parser): Promise<THREE.Texture> | null;
}