Node 流中的结束事件和完成事件之间的区别是什么

Js 流同时触发 end和 finish事件？

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end and finish are the same event BUT on different types of Streams.

  • stream.Readable fires ONLY end and NEVER finish
  • stream.Writable fires ONLY finish and NEVER end

Source: https://nodejs.org/dist/latest-v5.x/docs/api/stream.html

Why the different naming of the same event?

The only reason I could think of is because of duplex streams (stream.Duplex), which implement both stream.Readable and stream.Writable interfaces (https://nodejs.org/dist/latest-v5.x/docs/api/stream.html#stream_class_stream_duplex) are readable and writable stream at the same time. To differentiate between end of reading and end of writing on the stream you must have a different event fired. SO, for Duplex streams end is end of reading and finish is end of writing.


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