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doc: add missing return types in fs.md - #65307

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doc: add missing return types in fs.md#65307
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Three entries in the fs documentation described their return value only in prose, or not at all, so the documentation tooling could not parse a return type and fell back to void:

  • filehandle[Symbol.asyncDispose]() and dir[Symbol.asyncDispose]() both return a promise. This matches the existing Returns: {Promise} annotations on other async dispose methods, such as heapProfileHandle[Symbol.asyncDispose]() in v8.md.
  • new fs.Utf8Stream([options]) is a constructor and returns an instance of the class, annotated the same way as the fs.ReadStream and fs.WriteStream constructors in this file.

No prose was changed; only the structured Returns: lines were added.

Verified by calling each function on a local build and by rendering fs.md locally, which now shows Promise, Promise and fs.Utf8Stream instead of void.

Refs: nodejs/doc-kit#953

@nodejs-github-bot nodejs-github-bot added doc Issues and PRs related to the documentations. fs Issues and PRs related to the fs subsystem / file system. labels Aug 15, 2026
Three entries in the fs documentation described their return
value only in prose, or not at all, so doc-kit could not parse
a return type and fell back to `void`:

* `filehandle[Symbol.asyncDispose]()` and
  `dir[Symbol.asyncDispose]()` both return a promise, matching
  the existing `Returns: {Promise}` annotations on other async
  dispose methods.
* `new fs.Utf8Stream([options])` is a constructor and returns
  an instance of the class.

Verified at runtime and by rendering the page locally with
doc-kit.

Refs: nodejs/doc-kit#953
Signed-off-by: Chxxeton <43923165+Chxxeton@users.noreply.github.com>
@chasetonco
chasetonco force-pushed the doc-fs-return-types branch from f95269e to dfb19a4 Compare August 15, 2026 18:32
@avivkeller avivkeller added author ready PRs that have at least one approval, no pending requests for changes, and a CI started. commit-queue Add this label to land a pull request using GitHub Actions. labels Aug 16, 2026
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