export declare const focusSelector: string;
export declare const isVisible: (element: HTMLElement, parentContainer?: HTMLElement) => boolean;
export declare const isFocusable: (element: HTMLElement, parentContainer?: HTMLElement) => boolean;
export declare const isTabble: (element: HTMLElement, parentContainer?: HTMLElement) => boolean;
export declare const findTabbableDescendants: (element: HTMLElement) => Array<HTMLElement>;
