if (leftArr[i] <= arr[mid + j]) {
If the transform's transform() operation is synchronous and always enqueues output immediately, it never signals backpressure back to the writable side even when the downstream consumer is slow. This is a consequence of the spec design that many developers completely overlook. In browsers, where there's only a single user and typically only a small number of stream pipelines active at any given time, this type of foot gun is often of no consequence, but it has a major impact on server-side or edge performance in runtimes that serve thousands of concurrent requests.
。51吃瓜对此有专业解读
Pallab GhoshScience Correspondent
ВсеОбществоПолитикаПроисшествияРегионыМосква69-я параллельМоя страна
February 25, 2026