你好老师，这里导出为什么会报错？

Default={
    maxAge:undefined,
    domain:undefined,
    path:undefined,
    secure:undefined
}
Default2={
    maxAge:-1,
    domain:undefined,
    path:undefined
}
class CookieFun{
    constructor(name,value,options=Default){
        this.name=name;
        this.value=value;
        this.options=options;
        this.set();
        // this.get();
        // this.remove();
    }
    set(){
       let cookieText=`${encodeURIComponent(this.name)}=${encodeURIComponent(this.value)}`;
       if(typeof this.options.maxAge==='number'){
        cookieText+=`; max-age=${this.options.maxAge}`;
       }
       if(this.options.domain){
        cookieText+=`; domain=${this.options.domain}`;
       }
       if(this.options.path){
        cookieText+=`; path=${this.options.path}`;
       }
       if(this.options.secure){
        cookieText+=`; secure`;
       }
      document.cookie=cookieText;
    }
    get(){
        this.name=`${encodeURIComponent(this.name)}`;
        const cookies=document.cookie.split('; ');
        for (const item of cookies) {
            const [cookieName,cookieValue]=item.split('=')
            if(cookieName===this.name){
                // console.log(`${decodeURIComponent(cookieValue)}`);
                return `${decodeURIComponent(cookieValue)}`;
            }
        }
        return undefined;
    }
    remove(){
        this.set(this.name,'',this.options=Default2)
    }
}
export{CookieFun,Default,Default2}

试着用class封装cookie，这样写对不对，remove方法该怎么正确设置参数，现在的remove自己测试了一下好像有点问题。

为什么我get方法变成static静态方法无法这样调用呢 CookieFun.get()？

然后最后导出时，默认值报错？不知道怎么改。