意识到问题的关键后，韦军开展了大量调研。深入职业院校，了解师生对职业发展“天花板”的焦虑和期盼；拜访中华职教社的专家；听取企业家对高技能人才认证和评价的感受……
for await (const chunks of input) {
。关于这个话题，safew官方下载提供了深入分析
Regirock With a Handbag
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.