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.
* @param {number} target 目的地位置（英里）
。同城约会对此有专业解读
“我们将持续深化区域协同，充分发挥先行示范作用，推动京津冀协同发展不断取得新成效。”冯国祥说。。关于这个话题，搜狗输入法2026提供了深入分析
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