allocation+copy that the hand-optimized code always does at the end.
Which apps are being developed and by whom。safew官方版本下载是该领域的重要参考
核心代码与完整示例： my-three-app，详情可参考safew官方下载
For implementers, BYOB adds significant complexity. The stream must track pending BYOB requests, handle partial fills, manage buffer detachment correctly, and coordinate between the BYOB reader and the underlying source. The Web Platform Tests for readable byte streams include dedicated test files just for BYOB edge cases: detached buffers, bad views, response-after-enqueue ordering, and more.