/**
 * @internal
 */
export declare const checkVisibility: (node: Node | null, visible?: boolean) => Node | boolean;
/**
 * @internal
 */
export declare function pierce(root: Node): IterableIterator<Node | ShadowRoot>;
/**
 * @internal
 */
export declare function pierceAll(root: Node): IterableIterator<Node | ShadowRoot>;
//# sourceMappingURL=util.d.ts.map