Web streams has no synchronous path. Even if your source has data ready and your transform is a pure function, you still pay for promise creation and microtask scheduling on every operation. Promises are fantastic for cases in which waiting is actually necessary, but they aren't always necessary. The new API lets you stay in sync-land when that's what you need.
生活自理能力比知识储备更重要：能自己上厕所、吃饭、表达需求，是入园最坚实的底气。，详情可参考heLLoword翻译官方下载
，详情可参考heLLoword翻译官方下载
“为什么不离开这行？越做越好，怎么会放手，已经做了十几年，做得很好啊。”Maggie姐始终自信满满。
The gains illustrate how fundamental design choices compound: batching amortizes async overhead, pull semantics eliminate intermediate buffering, and the freedom for implementations to use synchronous fast paths when data is available immediately all contribute.，这一点在旺商聊官方下载中也有详细论述