import type { Nullable } from 'element-plus/es/utils/types';
export declare const EVENT_CODE: {
    tab: string;
    enter: string;
    space: string;
    left: string;
    up: string;
    right: string;
    down: string;
    esc: string;
    delete: string;
    backspace: string;
};
export declare const isVisible: (element: HTMLElement) => boolean;
export declare const obtainAllFocusableElements: (element: HTMLElement) => HTMLElement[];
export declare const isFocusable: (element: HTMLElement) => boolean;
export declare const attemptFocus: (element: HTMLElement) => boolean;
export declare const triggerEvent: (elm: HTMLElement, name: string, ...opts: Array<boolean>) => HTMLElement;
export declare const isLeaf: (el: HTMLElement) => boolean;
export declare const getSibling: (el: HTMLElement, distance: number, elClass: string) => Nullable<Element>;
export declare const focusNode: (el: any) => void;
declare const Utils: {
    IgnoreUtilFocusChanges: boolean;
    focusFirstDescendant(element: HTMLElement): boolean;
    focusLastDescendant(element: HTMLElement): boolean;
};
export default Utils;