The Writer is not a concrete class. Any object that implements write(), end(), and abort() can be a writer making it easy to adapt existing APIs or create specialized implementations without subclassing. There's no complex UnderlyingSink protocol with start(), write(), close(), and abort() callbacks that must coordinate through a controller whose lifecycle and state are independent of the WritableStream it is bound to.
await blocking.writer.write(chunk2); // ok
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"We've got to get those astronauts to the Moon and then back again, completely safely," says Cleaver.，这一点在safew官方下载中也有详细论述
In 2019, 2020 and 2021 the sea ice was relatively stable and significant feather mounds were visible.