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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Москвичи пожаловались на зловонную квартиру-свалку с телами животных и тараканами18:04
"I wouldn't have been worried if I had one bum cheek dragging on the floor. I didn't care at that point, I just wanted to go home," she said.
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