type ElementObserverCallbacks = {
    onAppear?: (el: Element) => void;
    onDisappear?: (el: Element) => void;
    onClick?: (el: Element, ev: MouseEvent) => void;
};
type ObserveOptions = {
    root?: Element;
    childList?: boolean;
    subtree?: boolean;
    deep?: boolean;
};
export declare class ElementObserver {
    private callbacks;
    private selector;
    private observer;
    private elementsSeen;
    private clickHandlers;
    private isObserving;
    private deep;
    private root;
    constructor(callbacks?: ElementObserverCallbacks);
    /** 初始化 MutationObserver */
    private initObserver;
    private collectAdded;
    private collectRemoved;
    /** 触发回调 */
    private triggerCallback;
    /** 点击事件绑定 */
    private bindClick;
    /** 点击事件解绑 */
    private unbindClick;
    /** 开始观察 */
    observe(selector: string, options?: ObserveOptions): void;
    /** 动态修改 selector */
    updateObserver(selector?: string, deep?: boolean): void;
    /** 停止观察 */
    disconnect(): void;
    /** 更新回调函数 */
    updateCallbacks(callbacks: ElementObserverCallbacks): void;
    /** 销毁实例 */
    destroy(): void;
}
export {};