fix(client-ofetch): add missing credentials property support

[Copilot]

• Explored repository structure and built successfully
• Ran tests to confirm current state
• Reviewed PR fix(client-ofetch): fix missing credentials property support #2699 which shows missing credentials support
• Examined current implementation in buildOfetchOptions function
• Added credentials property to buildOfetchOptions function in utils.ts
• Added comprehensive tests for credentials property support
• Verified all tests pass (872 tests including 3 new credential tests)
• Verified type checking passes
• Generated example client and confirmed credentials property is included
• Tested manually that credentials work with all values (include, omit, same-origin)
• Ran pnpm test:update to regenerate all test snapshots
• Committed updated snapshots (10 ofetch snapshot files)

Summary

Fixed the missing credentials property support in the ofetch client by ensuring it's properly passed through to the underlying ofetch instance.

Changes Made

1. Added credentials support: Modified buildOfetchOptions to include credentials: opts.credentials as OfetchOptions['credentials']
2. Added comprehensive tests: Created tests covering all RequestCredentials values ('include', 'omit', 'same-origin') and undefined cases
3. Updated all test snapshots: Regenerated 10 ofetch snapshot files to include the credentials property in generated code

The change is minimal and maintains backward compatibility while enabling full credentials support as requested in issue #2699.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>ofetch client dropping credentials keyword</issue_title>
<issue_description>See pull request #2699

We should support the credentials keyword so that it gets correctly propagated to the client instance</issue_description>

Comments on the Issue (you are @copilot in this section)

Fixes #2709

---

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Project	Deployment	Preview	Comments	Updated (UTC)
hey-api-docs	Ready	Preview	Comment	Sep 30, 2025 6:15am

[changeset-bot]

🦋 Changeset detected

Latest commit: ba7e6dc

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@hey-api/openapi-ts	Patch

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[mrlubos]

@copilot make sure to run pnpm test:update and commit the updated snapshots

[Copilot]

@copilot make sure to run pnpm test:update and commit the updated snapshots

Done! Updated all test snapshots with the credentials property (089bdcb).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 25.13%. Comparing base (44ccd36) to head (ba7e6dc).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2710   +/-   ##
=======================================
  Coverage   25.12%   25.13%           
=======================================
  Files         386      386           
  Lines       37351    37352    +1     
  Branches     1783     1783           
=======================================
+ Hits         9385     9387    +2     
+ Misses      27953    27952    -1     
  Partials       13       13           

Flag	Coverage Δ
unittests	25.13% <100.00%> (+<0.01%)	⬆️

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commit: ba7e6dc