Node.js stream.Writable 'unpipe'事件用法及代码示例

事件：'unpipe'

参数

• src <stream.Readable> unpiped 这个可写的源流

'unpipe' 事件在 Readable 流上调用 stream.unpipe() 方法时发出，从其目标集中删除此 Writable 。

如果 Writable 流在 Readable 流通过管道进入其中时发出错误，也会发出此消息。

const writer = getWritableStreamSomehow();
const reader = getReadableStreamSomehow();
writer.on('unpipe', (src) => {
  console.log('Something has stopped piping into the writer.');
  assert.equal(src, reader);
});
reader.pipe(writer);
reader.unpipe(writer);