[PaigeM89]

Proposed Changes

Fixes #334

Types of changes

What types of changes does your code introduce to FsToolkit.ErrorHandling?
Put an x in the boxes that apply and remove ones that don't apply

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist

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• Build and tests pass locally
• I have added tests that prove my fix is effective or that my feature works (if appropriate)
• I have added necessary documentation (if appropriate)

Further comments

I only found one other case that needed updating, but it's possible more are lurking somewhere.

[Copilot]

Pull Request Overview

This PR updates Option.traverseTask and Option.traverseAsync to allow mapping from 'T to a different output type 'U, and adds tests to verify the new behavior.

• Changed signatures of traverseTask and traverseAsync to accept functions returning Task<'U> / Async<'U> and to return Task<Option<'U>> / Async<Option<'U>>.
• Added tests in Option.fs to confirm mapping to new types for both traverseTask and traverseAsync.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/FsToolkit.ErrorHandling/Option.fs	Updated traverseTask and traverseAsync signatures and return types to use generic 'U.
tests/FsToolkit.ErrorHandling.Tests/Option.fs	Added test cases ensuring traverseTask and traverseAsync correctly map to new types.

Comments suppressed due to low confidence (2)

src/FsToolkit.ErrorHandling/Option.fs:343

• Update the <returns> XML doc comment to reflect the new return type <c>Task<'U option></c> instead of <c>Task<'T option></c>.

    ///

src/FsToolkit.ErrorHandling/Option.fs:410

• Clarify the <returns> XML doc comment for traverseAsync to specify <c>Async<Option<'U>></c> to match the updated signature.

    /// <returns>An Async Option with the mapped value.</returns>

[TheAngryByrd]

Thank you!