export declare const isShadowRoot: (el: Node) => el is ShadowRoot;
export declare const isShadowElement: (el: Node) => boolean;
export declare const isCustomElementWithShadowRoot: (el: Element) => el is HTMLElement & {
    shadowRoot: ShadowRoot;
};
export declare const shadowPiercingAncestors: (element: Node) => Generator<Node, void, unknown>;
export declare const shadowPiercingContains: (container: HTMLElement | Document, el: HTMLElement) => boolean;
export declare const shallowShadowQuerySelector: (el: HTMLElement | Document, selector: string) => HTMLElement | null;