import { Component, DefineComponent, Ref } from 'vue';
/**
 * Call onFocusOut when focus is out of `el` or any of his children using keyboard (or programmatically).
 *
 * @param el element to watch for focus out
 * @param onFocusOut callback to call when focus is out of `el` or any of his children
 *
 * @example
 * Can be used in elements with dropdown or modal, so when user changes focus to other element with `tab` key, dropdown will be closed.
 */
export declare const useKeyboardFocusOut: (el: Ref<HTMLElement | DefineComponent | undefined | Component>, onFocusOut: () => void) => void;