TransformStream creates a readable/writable pair with processing logic in between. The transform() function executes on write, not on read. Processing of the transform happens eagerly as data arrives, regardless of whether any consumer is ready. This causes unnecessary work when consumers are slow, and the backpressure signaling between the two sides has gaps that can cause unbounded buffering under load. The expectation in the spec is that the producer of the data being transformed is paying attention to the writer.ready signal on the writable side of the transform but quite often producers just simply ignore it.
if (low = high) return; // 子数组长度<=1
，这一点在91视频中也有详细论述
Diff, merge, blame
警方表示，阿爾巴尼斯於當地時間18:00（格林尼治標準時間07:00）從官邸緊急疏散，並被轉移到另一個地點數小時。