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.
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，这一点在同城约会中也有详细论述
Раскрыты подробности похищения ребенка в Смоленске09:27
at a teller during business hours, who essentially dispensed the token as if it
unsigned short unused;