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/**
* @description 封装 MutationObserver
* @author fangzhicong
*/
export declare type callback = (mutations: MutationRecord[], observer: Mutation) => void;
/**
* 封装 MutationObserver，
*/
export default class Mutation {
/**
* MutationObserver 实例
*/
protected observer: MutationObserver;
/**
* 被监听的 Node 节点（可继承的，方便扩展但又不会在外部被修改）
*/
protected node?: Node;
/**
* 默认的 MutationObserverInit 配置
*/
protected options: MutationObserverInit;
/**
* MutationCallback
*/
protected callback: (mutations: MutationRecord[]) => void;
/**
* 构造器
* @param fn 发生变化时执行的回调函数
* @param options 自定义配置项
*/
constructor(fn: callback, options?: MutationObserverInit);
get target(): Node | undefined;
/**
* 绑定监听节点（初次绑定有效）
* @param node 需要被监听的节点
*/
observe(node: Node): void;
/**
* 连接监听器（开始观察）
*/
connect(): this;
/**
* 断开监听器（停止观察）
*/
disconnect(): void;
}