The problem is compounded by APIs that implicitly create stream branches. Request.clone() and Response.clone() perform implicit tee() operations on the body stream — a detail that's easy to miss. Code that clones a request for logging or retry logic may unknowingly create branched streams that need independent consumption, multiplying the resource management burden.
It is also necessary to emphasize that many optimizations are only possible in parts of the spec that are unobservable to user code. The alternative, like Bun "Direct Streams", is to intentionally diverge from the spec-defined observable behaviors. This means optimizations often feel "incomplete". They work in some scenarios but not in others, in some runtimes but not others, etc. Every such case adds to the overall unsustainable complexity of the Web streams approach which is why most runtime implementers rarely put significant effort into further improvements to their streams implementations once the conformance tests are passing.
，这一点在91视频中也有详细论述
// Sync — when all components are synchronous
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，详情可参考搜狗输入法2026
// 易错点4：条件写成"<"而非"<="，会导致相同值的元素被错误保留，详情可参考WPS官方版本下载
Журналист газеты спросил у Буданова, считает ли он возможным проведение выборов при прекращении огня на 60 дней и стал бы он баллотироваться, если бы выборы состоялись.