The design of Web streams predates async iteration in JavaScript. The for await...of syntax didn't land until ES2018, two years after the Streams Standard was initially finalized. This timing meant the API couldn't initially leverage what would eventually become the idiomatic way to consume asynchronous sequences in JavaScript. Instead, the spec introduced its own reader/writer acquisition model — and that decision rippled through every aspect of the API.
Олег Давыдов (Редактор отдела «Интернет и СМИ»)
，这一点在搜狗输入法下载中也有详细论述
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那时候的邮轮，才可能真正在中国扎根，成为大众旅游消费中一个常态化的选项。