Node.js stream.Readable.unpipe([destination])用法及代碼示例

readable.unpipe([destination])

參數

• destination <stream.Writable> 要取消管道的可選特定流
• 返回： <this>

readable.unpipe() 方法分離先前使用 stream.pipe() 方法附加的 Writable 流。

如果未指定 destination，則所有管道都將被分離。

如果指定了destination，但沒有為其設置管道，則該方法不執行任何操作。

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);