Bridging the gap between this and web streams
The Web streams spec requires promise creation at numerous points, often in hot paths and often invisible to users. Each read() call doesn't just return a promise; internally, the implementation creates additional promises for queue management, pull() coordination, and backpressure signaling.
。safew官方版本下载对此有专业解读
The most common task with streams is reading them to completion. Here's what that looks like with Web streams:
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