PR Review: Polyfill Dependency Update (9.3.2 → 9.3.4)

✅ Overall Assessment

This is a straightforward patch-level dependency update that appears safe to merge. The change is minimal, focused, and follows proper semantic versioning practices.

📋 Review Findings

✅ Code Quality

• Minimal scope: Single-line change updating version number
• Proper location: Correctly updates TUnit.Core.targets which manages auto-included Polyfill dependency
• Clean diff: No extraneous changes or modifications

⚠️ Potential Issue: Version Discrepancy

There's a version mismatch in the repository:

• TUnit.Core/TUnit.Core.targets (this PR): 9.3.2 → 9.3.4 ✅
• Directory.Packages.props (line 62): 9.3.1 (unchanged)

Recommendation: Consider updating Directory.Packages.props to 9.3.4 in a follow-up to maintain consistency, unless the versions are intentionally different for internal vs. external projects.

✅ Architecture Compliance

The update correctly targets the _TUnitPolyfillVersion property that is:

• Used for non-CPM projects via Version attribute
• Used for CPM projects via VersionOverride attribute
• Only applied when targeting .NET Standard 2.0/2.1 or .NET Framework

This follows TUnit's dual-mode CPM support pattern.

✅ Security

• Polyfill is a legitimate package by Simon Cropp
• Patch version update (9.3.2 → 9.3.4) has low risk
• Package usage is compile-time only (PrivateAssets=all, excludes runtime)

✅ Performance

• No performance impact (compile-time polyfill only)
• No runtime dependencies added

✅ Test Coverage

• No test changes required (dependency version update only)
• Existing tests should validate compatibility

🔍 Additional Considerations

1. Renovate Bot Configuration: The PR shows automerge is enabled. Ensure CI passes before auto-merging.

2. Release Notes: The linked release notes don't show specific changes between 9.3.2 and 9.3.4. Consider checking the Polyfill changelog to understand what was fixed in the patch.

3. No Breaking Changes: Since this is a patch version, no breaking changes are expected per semantic versioning.

✅ Approval Recommendation

APPROVED - This PR is safe to merge once CI passes.

Suggested Follow-up: Update Directory.Packages.props line 62 from version 9.3.1 to 9.3.4 to maintain consistency.

Review conducted per TUnit's CLAUDE.md guidelines