/**
 * Lazy loader for the custom OpenCASCADE WASM module.
 * The WASM (~5MB) is only loaded when boolean operations are first used.
 */
/**
 * Get the OpenCASCADE instance. Loads the WASM on first call.
 * Subsequent calls return the cached instance.
 */
export declare function getOC(): Promise<any>;
/**
 * Initialize with a user-provided OpenCASCADE instance.
 */
export declare function setOC(instance: any): void;
/**
 * Check if OpenCASCADE is loaded.
 */
export declare function isOCLoaded(): boolean;