export declare function getActiveElement(root?: Document | ShadowRoot): Element | null;
export declare function focusElement(element: HTMLElement): void;
export declare function focusable(element: Element): boolean;
/** focus primitives, any interactive element does not requiring advanced keyboard interactions like arrow/navigation */
export declare function simpleFocusable(element: Element): boolean;
export declare function setActiveKeyListItem(items: NodeListOf<HTMLElement> | HTMLElement[], item: HTMLElement): void;
export declare function initializeKeyListItems(items: NodeListOf<HTMLElement> | HTMLElement[]): void;