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This PR contains the following updates:

Package Type Update Change
Polyfill nuget minor 9.4.19.5.0

Release Notes

SimonCropp/Polyfill (Polyfill)

v9.5.0

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📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.


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This PR has been generated by Renovate Bot.

Copilot AI review requested due to automatic review settings December 23, 2025 21:09
@thomhurst thomhurst added dependencies Pull requests that update a dependency file MINOR renovate-bot labels Dec 23, 2025
@thomhurst thomhurst enabled auto-merge (squash) December 23, 2025 21:09
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Pull request overview

This PR updates the Polyfill NuGet package from version 9.4.1 to 9.5.0. Polyfill is a library that provides modern C# features and APIs to older target frameworks (netstandard2.0, netstandard2.1, and .NET Framework). This is a minor version update that should be backward compatible per semantic versioning.

Key Changes:

  • Bump Polyfill dependency version from 9.4.1 to 9.5.0

@claude
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claude bot commented Dec 23, 2025

PR Review: Polyfill 9.4.1 → 9.5.0

✅ Summary

This is a straightforward dependency update for the Polyfill package from version 9.4.1 to 9.5.0. This is a minor version update managed by Renovate Bot.


📋 Review Findings

Code Quality & Best Practices

  • PASS: Single-line change in centrally managed package version file
  • PASS: Uses Central Package Management (Directory.Packages.props)
  • PASS: Follows TUnit's dependency management conventions

Potential Bugs/Issues

  • PASS: No code changes, only version bump
  • PASS: Minor version update (9.4.1 → 9.5.0) should be backward compatible per semantic versioning
  • Note: Polyfill is used in multiple projects across TUnit (engine, source generators, assertions, analyzers)

Performance Considerations

  • PASS: No performance impact expected from a minor polyfill update
  • Note: Polyfill provides compile-time polyfills for newer .NET APIs on older frameworks - no runtime overhead

Security Concerns

  • PASS: No security concerns identified
  • Note: Polyfill is a well-maintained library by Simon Cropp (trusted in .NET community)

Test Coverage

  • RECOMMENDATION: Verify CI passes before merge
  • Note: Since Polyfill is used across multiple critical components (TUnit.Engine, TUnit.Core.SourceGenerator, TUnit.Assertions), ensure all test suites pass
  • Automerge Enabled: PR will auto-merge once CI is green

🔍 Impact Analysis

Affected Components (based on grep analysis):

  • TUnit.Engine
  • TUnit.Core.SourceGenerator
  • TUnit.Assertions
  • TUnit.Analyzers
  • Test projects

Usage Pattern: Polyfill provides compile-time type forwarding and polyfills for modern .NET APIs on older frameworks, enabling TUnit to use modern C# features while maintaining multi-framework support.


✅ Recommendation

APPROVE - This is a routine dependency update with low risk:

  1. ✅ Minor version bump (backward compatible)
  2. ✅ Automated update from trusted source (Renovate)
  3. ✅ No code changes required
  4. ✅ Follows TUnit conventions
  5. ✅ Automerge enabled (will merge on green CI)

Action Items:

  • Wait for CI to complete
  • Verify all test suites pass (especially TUnit.Engine.Tests, TUnit.Core.SourceGenerator.Tests)
  • Auto-merge will handle the rest

📝 Notes

  • No CLAUDE.md rules violated (this is a dependency update, not a feature/bug fix)
  • No snapshot updates required
  • No dual-mode implementation concerns (dependency change only)
  • No public API changes

@claude
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claude bot commented Dec 23, 2025

Code Review: Polyfill Dependency Update

Summary

This PR updates the Polyfill package from version 9.4.1 to 9.5.0 - a minor version update managed by Renovate Bot.

Review Findings

Positive Aspects

  1. Low Risk Change: This is a minor version bump for a polyfill library, which typically provides backward compatibility for older .NET frameworks
  2. Centralized Management: The change is made in Directory.Packages.props, following the repository's centralized package management pattern
  3. Automated Testing: CI checks are running to validate the change across multiple platforms (Ubuntu, macOS, Windows) and locales (fr-FR, pl-PL, de-DE)
  4. Security Scanning: Snyk and CodeQL checks have passed successfully
  5. Minimal Impact: The Polyfill package is primarily used for providing modern .NET APIs to older framework versions - no breaking changes expected for a minor update

📝 Code Quality & Conventions

  • ✅ Follows repository conventions (centralized package versioning)
  • ✅ Single-line change minimizes review surface area
  • ✅ Automated by Renovate Bot with proper metadata

🔍 What Polyfill Does in TUnit

From the codebase analysis:

  • Provides polyfills for modern .NET APIs when targeting older frameworks
  • Referenced in Polyfill.targets for conditional inclusion
  • Has some custom extensions in TUnit.Engine/PolyfillExtensions.cs (e.g., ReplaceLineEndings)
  • Used across analyzers, source generators, and engine components

⚠️ Recommendations

  1. Wait for CI Completion: The main build pipeline and locale tests are still in progress. I recommend waiting for all checks to pass before merging.

  2. Monitor for Unexpected Behavior: After merging, watch for any edge cases in:

    • Multi-targeting scenarios (different framework versions)
    • Source generator and analyzer builds (Roslyn multi-version projects)
    • AOT/trimming scenarios
  3. No Action Required: This is a low-risk dependency update. No code changes needed unless CI reveals issues.

Conclusion

Recommendation: ✅ APPROVE (pending CI completion)

This is a routine dependency update with minimal risk. The change follows repository conventions and has appropriate automated testing coverage. Once CI checks pass, this is safe to merge.


Review performed by Claude Code following TUnit conventions from CLAUDE.md

This was referenced Dec 24, 2025
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3 participants