method ReadableBase.prototype.unpipe
Usage in Deno
```typescript import { ReadableBase } from "node:node__stream.d.ts"; ```
ReadableBase.prototype.unpipe(destination?: WritableStream): this
The `readable.unpipe()` method detaches a `Writable` stream previously attached
using the pipe method.
If the `destination` is not specified, then _all_ pipes are detached.
If the `destination` is specified, but no pipe is set up for it, then
the method does nothing.
```js
import fs from '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);
```
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