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doc: correct cleanup option in stream.(promises.)finished #55043

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Sep 25, 2024
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doc: correct cleanup option in stream.(promises.)finished #55043

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22 changes: 19 additions & 3 deletions doc/api/stream.md
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Original file line number Diff line number Diff line change
Expand Up @@ -257,6 +257,11 @@
- v18.14.0
pr-url: https://github.com/nodejs/node/pull/46205
description: Added support for `ReadableStream` and `WritableStream`.
- version:
- v19.1.0
- v18.13.0
pr-url: https://github.com/nodejs/node/pull/44862

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description: The `cleanup` option was added.
-->

* `stream` {Stream|ReadableStream|WritableStream} A readable and/or writable
Expand All @@ -265,7 +270,9 @@
* `error` {boolean|undefined}
* `readable` {boolean|undefined}
* `writable` {boolean|undefined}
* `signal`: {AbortSignal|undefined}
* `signal` {AbortSignal|undefined}
* `cleanup` {boolean|undefined} If `true`, removes the listeners registered by
this function before the promise is fulfilled. **Default:** `false`.
Comment on lines 270 to +275
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Don't think that the convention for options parameter types is to include undefined?

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IMO that's an issue for a different PR because this PR follows the same convention as the rest of the parameters.

* Returns: {Promise} Fulfills when the stream is no
longer readable or writable.

Expand Down Expand Up @@ -301,6 +308,17 @@

The `finished` API also provides a [callback version][stream-finished].

`stream.finished()` leaves dangling event listeners (in particular
`'error'`, `'end'`, `'finish'` and `'close'`) after the returned promise is
resolved or rejected. The reason for this is so that unexpected `'error'`
events (due to incorrect stream implementations) do not cause unexpected
crashes. If this is unwanted behavior then `options.cleanup` should be set to
`true`:

```js
await finished(rs, { cleanup: true });
```

### Object mode

All streams created by Node.js APIs operate exclusively on strings, {Buffer},
Expand Down Expand Up @@ -2754,8 +2772,6 @@
underlying stream will _not_ be aborted if the signal is aborted. The
callback will get called with an `AbortError`. All registered
listeners added by this function will also be removed.
* `cleanup` {boolean} remove all registered stream listeners.
**Default:** `false`.
* `callback` {Function} A callback function that takes an optional error
argument.
* Returns: {Function} A cleanup function which removes all registered
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