The primary signal is desiredSize on the controller. It can be positive (wants data), zero (at capacity), negative (over capacity), or null (closed). Producers are supposed to check this value and stop enqueueing when it's not positive. But there's nothing enforcing this: controller.enqueue() always succeeds, even when desiredSize is deeply negative.
2而在这之前，已经有蓝梦邮轮停航被卖、诺唯真、公主邮轮离开就不再回来的先例。一个很扎心的问题随之而来：中国，真的不适合邮轮旅行，留不住高价奢华邮轮吗？
。关于这个话题，谷歌浏览器【最新下载地址】提供了深入分析
paper: “notebook paper with subtle ruled lines”
2 February 2026ShareSave