The Writer is not a concrete class. Any object that implements write(), end(), and abort() can be a writer making it easy to adapt existing APIs or create specialized implementations without subclassing. There's no complex UnderlyingSink protocol with start(), write(), close(), and abort() callbacks that must coordinate through a controller whose lifecycle and state are independent of the WritableStream it is bound to.
63-летняя Деми Мур вышла в свет с неожиданной стрижкой17:54
，这一点在im钱包官方下载中也有详细论述
// 比较函数（便于统计比较次数，可选），详情可参考旺商聊官方下载
第六条 仲裁机构应当由当事人协议选定。