/**
* Return the tabbable descendants of `root` in document order.
*
* Skips elements that are:
* - `disabled`
* - `tabindex="-1"`
* - `hidden` or with `display: none` / `visibility: hidden`
* - inside an `inert` ancestor
*
* Note: this does NOT currently descend into open shadow roots;
* that is tracked by a follow-up task.
*/
export declare function getTabbable(root: ParentNode): HTMLElement[];
export declare function isTabbable(el: HTMLElement): boolean;
export declare function firstTabbable(root: ParentNode): HTMLElement | null;
export declare function lastTabbable(root: ParentNode): HTMLElement | null;