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No custom ReadableStream class with hidden internal state. A readable stream is just an AsyncIterable. You consume it with for await...of. No readers to acquire, no locks to manage.
，这一点在旺商聊官方下载中也有详细论述
"There should have been lots of penguins there, but actually we could only see 25 groups," he said. Groups vary in size from 10s to up to 1,000 birds.
Lily JamaliNorth America Technology correspondent