readable.unpipe([destination])

• destination <stream.Writable> 可选要取消管道的特定流
• 返回：<this>

readable.unpipe() 方法会分离之前使用 stream.pipe() 方法附加的 Writable 流。

🌐 The readable.unpipe() method detaches a Writable stream previously attached using the stream.pipe() method.

如果未指定 destination，则会分离所有管道。

🌐 If the destination is not specified, then all pipes are detached.

如果指定了 destination，但没有为其设置管道，则该方法不会执行任何操作。

🌐 If the destination is specified, but no pipe is set up for it, then the method does nothing.

const fs = require('node:fs');
const readable = getReadableStreamSomehow();
const writable = fs.createWriteStream('file.txt');
// All the data from readable goes into 'file.txt',
// but only for the first second.
readable.pipe(writable);
setTimeout(() => {
  console.log('Stop writing to file.txt.');
  readable.unpipe(writable);
  console.log('Manually close the file stream.');
  writable.end();
}, 1000); 拷贝