/**
 * Returns true if the given HTML element is programmatically focusable.
 * Warning: this is a best-effort approximation of whether the element is really focusable.
 * It may not handle all use cases accurately.
 *
 * @param element - element to test
 * @returns true if the element is programmatically focusable.
 */
export declare const isFocusable: (element: HTMLElement) => boolean;