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.
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，这一点在搜狗输入法2026中也有详细论述
const { value } = await reader.read();
刘年丰：传统的巡检只能“看”，发现问题后还得派人去解决。我们的目标是巡检加操作——巡检到点位后，直接完成操作，比如掏钥匙开柜门、按开关、拔插头。，推荐阅读im钱包官方下载获取更多信息
Фото: Илья Наймушин / РИА Новости