/**
 * Shared Three.js loader
 *
 * Ensures only one instance of Three.js is loaded across all 3D components.
 * This prevents the "Multiple instances of Three.js being imported" warning.
 */
export type ThreeModule = typeof import("three");
export type OrbitControlsType = typeof import('three/examples/jsm/controls/OrbitControls.js').OrbitControls;
interface ThreeLoaderResult {
    THREE: ThreeModule;
    OrbitControls: OrbitControlsType;
}
/**
 * Load Three.js and OrbitControls
 * Returns cached instance if already loaded
 */
export declare function loadThree(): Promise<ThreeLoaderResult>;
/**
 * Check if Three.js is already loaded
 */
export declare function isThreeLoaded(): boolean;
export {};