chore(deps): update dependency polyfill to 9.0.2

[thomhurst]

This PR contains the following updates:

Package	Type	Update	Change
Polyfill	nuget	patch	9.0.1 -> 9.0.2

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Release Notes

SimonCropp/Polyfill (Polyfill)

v9.0.2

Compare Source

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Configuration

📅 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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• If you want to rebase/retry this PR, check this box

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This PR has been generated by Renovate Bot.

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PR Review: Polyfill Dependency Update v8.9.1 → v9.0.1

🔍 Code Review Summary

This PR completes a two-part Polyfill v9 migration (following PR #3791). The update appears safe and ready for merge.

✅ Review Findings

Code Quality & Best Practices:

• ✅ Clean, minimal change - only version bump in central package management
• ✅ Follows TUnit's centralized dependency management pattern
• ✅ Part of coordinated update strategy (build targets updated in chore(deps): update dependency polyfill to v9 #3791)

Compatibility Analysis:

• ✅ No breaking changes detected - TUnit's usage patterns remain compatible
• ✅ Critical APIs (Dictionary.TryAdd(), using Polyfills;) unchanged
• ✅ Enhanced type isolation through embedded attributes (architectural improvement)

Security & Performance:

• ✅ No security concerns identified
• ✅ No performance impact expected - same API surface
• ✅ Improved type isolation prevents assembly conflicts

Test Coverage:

• ✅ Previous Polyfill v9 update (PR chore(deps): update dependency polyfill to v9 #3791) likely validated compatibility
• ⚠️ Note: Unable to run test suite due to permissions, but build targets were already updated successfully

📋 Technical Details

What Changed:

- <PackageVersion Include="Polyfill" Version="8.9.1" />
+ <PackageVersion Include="Polyfill" Version="9.0.1" />

TUnit's Polyfill Usage:

• TUnit.Engine: Uses Polyfills namespace for TryAdd() methods (15+ occurrences)
• Build system: Embedded polyfill types via PolyUseEmbeddedAttribute=true
• Custom fallback: PolyfillExtensions.cs for ReplaceLineEndings

Key Architectural Benefit:
Enhanced type isolation - each project gets isolated polyfill types, preventing conflicts with InternalsVisibleTo usage.

🚀 Recommendation: APPROVE

This is a routine dependency update with low risk:

• Part of coordinated migration (build config already updated)
• Backward-compatible API surface
• Follows TUnit's established patterns
• Improves type isolation architecture

Suggested Actions:

1. ✅ Merge when CI passes
2. Monitor post-merge for any edge cases
3. Consider updating documentation to mention v9 compatibility

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[claude]

Claude finished @thomhurst's task —— View job

---

PR Review: Polyfill Dependency Update v8.9.1 → v9.0.1

Todo List:

• Read the changed file (Directory.Packages.props)
• Analyze Polyfill usage throughout the codebase
• Check for potential breaking changes in v9
• Review code quality and best practices
• Assess security and performance implications
• Evaluate test coverage needs
• Provide comprehensive review feedback

---

🔍 Code Review Summary

This PR completes a two-part Polyfill v9 migration (following PR #3791). The update appears safe and ready for merge.

✅ Review Findings

Code Quality & Best Practices:

• ✅ Clean, minimal change - only version bump in central package management
• ✅ Follows TUnit's centralized dependency management pattern
• ✅ Part of coordinated update strategy (build targets updated in chore(deps): update dependency polyfill to v9 #3791)

Compatibility Analysis:

• ✅ No breaking changes detected - TUnit's usage patterns remain compatible
• ✅ Critical APIs (Dictionary.TryAdd(), using Polyfills;) unchanged
• ✅ Enhanced type isolation through embedded attributes (architectural improvement)

Security & Performance:

• ✅ No security concerns identified
• ✅ No performance impact expected - same API surface
• ✅ Improved type isolation prevents assembly conflicts

Test Coverage:

• ✅ Previous Polyfill v9 update (PR chore(deps): update dependency polyfill to v9 #3791) likely validated compatibility
• ⚠️ Note: Unable to run test suite due to permissions, but build targets were already updated successfully

📋 Technical Details

What Changed:

- <PackageVersion Include="Polyfill" Version="8.9.1" />
+ <PackageVersion Include="Polyfill" Version="9.0.1" />

TUnit's Polyfill Usage:

• TUnit.Engine: Uses Polyfills namespace for TryAdd() methods (15+ occurrences)
• Build system: Embedded polyfill types via PolyUseEmbeddedAttribute=true
• Custom fallback: PolyfillExtensions.cs for ReplaceLineEndings

Key Architectural Benefit:
Enhanced type isolation - each project gets isolated polyfill types, preventing conflicts with InternalsVisibleTo usage.

🚀 Recommendation: APPROVE

This is a routine dependency update with low risk:

• Part of coordinated migration (build config already updated)
• Backward-compatible API surface
• Follows TUnit's established patterns
• Improves type isolation architecture

Suggested Actions:

1. ✅ Merge when CI passes
2. Monitor post-merge for any edge cases
3. Consider updating documentation to mention v9 compatibility

[claude]

Claude finished @thomhurst's task —— View job

---

PR Review: Polyfill Dependency Update v8.9.1 → v9.0.1

Todo List:

• Read the changed file (Directory.Packages.props)
• Analyze Polyfill usage throughout the codebase
• Check for potential breaking changes in v9
• Review code quality and best practices
• Assess security and performance implications
• Evaluate test coverage needs
• Provide comprehensive review feedback

---

🔍 Code Review Summary

This PR completes a two-part Polyfill v9 migration (following PR #3791). The update appears safe and ready for merge.

✅ Review Findings

Code Quality & Best Practices:

• ✅ Clean, minimal change - only version bump in central package management
• ✅ Follows TUnit's centralized dependency management pattern
• ✅ Part of coordinated update strategy (build targets updated in chore(deps): update dependency polyfill to v9 #3791)

Compatibility Analysis:

• ✅ No breaking changes detected - TUnit's usage patterns remain compatible
• ✅ Critical APIs (Dictionary.TryAdd(), using Polyfills;) unchanged
• ✅ Enhanced type isolation through embedded attributes (architectural improvement)

Security & Performance:

• ✅ No security concerns identified
• ✅ No performance impact expected - same API surface
• ✅ Improved type isolation prevents assembly conflicts

Test Coverage:

• ✅ Previous Polyfill v9 update (PR chore(deps): update dependency polyfill to v9 #3791) likely validated compatibility
• ⚠️ Note: Unable to run test suite due to permissions, but build targets were already updated successfully

📋 Technical Details

What Changed:

- <PackageVersion Include="Polyfill" Version="8.9.1" />
+ <PackageVersion Include="Polyfill" Version="9.0.1" />

TUnit's Polyfill Usage:

• TUnit.Engine: Uses Polyfills namespace for TryAdd() methods (15+ occurrences)
• Build system: Embedded polyfill types via PolyUseEmbeddedAttribute=true
• Custom fallback: PolyfillExtensions.cs for ReplaceLineEndings

Key Architectural Benefit:
Enhanced type isolation - each project gets isolated polyfill types, preventing conflicts with InternalsVisibleTo usage.

🚀 Recommendation: APPROVE

This is a routine dependency update with low risk:

• Part of coordinated migration (build config already updated)
• Backward-compatible API surface
• Follows TUnit's established patterns
• Improves type isolation architecture

Suggested Actions:

1. ✅ Merge when CI passes
2. Monitor post-merge for any edge cases
3. Consider updating documentation to mention v9 compatibility

[claude]

Claude finished @thomhurst's task —— View job

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PR Review: Polyfill Dependency Update v9.0.1 → v9.0.2

Todo List:

• Read the changed file (Directory.Packages.props)
• Analyze Polyfill usage throughout the codebase
• Check for potential breaking changes in v9.0.2
• Review code quality and best practices
• Assess security and performance implications
• Evaluate test coverage needs
• Provide comprehensive review feedback

---

🔍 Code Review Summary

This PR updates the Polyfill dependency from v9.0.1 to v9.0.2. The change appears safe but requires one additional fix.

⚠️ Critical Issue Found

Version Mismatch: TUnit.Core.targets:11 still references Polyfill 9.0.1:

<_TUnitPolyfillVersion>9.0.1</_TUnitPolyfillVersion>

This needs to be updated to 9.0.2 to maintain consistency between the central package management and the embedded Polyfill reference used for NuGet consumers.

✅ Review Findings

Code Quality & Best Practices:

• ✅ Clean, minimal change following TUnit's centralized dependency management pattern
• ✅ Consistent with automated dependency update workflow
• ⚠️ Requires fix: Version mismatch in TUnit.Core.targets

Polyfill Usage Analysis:

• ✅ TUnit.Engine extensively uses Polyfill: 15+ TryAdd() calls across critical discovery and execution paths
• ✅ Safe usage patterns: Primary usage is Dictionary.TryAdd() and using Polyfills; which are stable APIs
• ✅ Fallback strategy: Custom PolyfillExtensions.cs for ReplaceLineEndings reduces dependency risk
• ✅ Embedded attributes: Uses PrivateAssets=all and compile-time inclusion for type isolation

Compatibility Analysis:

• ✅ Low risk patch update: v9.0.1 → v9.0.2 is a patch version with no expected breaking changes
• ✅ Critical APIs stable: Dictionary.TryAdd(), ConcurrentDictionary.TryAdd() unchanged
• ✅ Type isolation: Embedded polyfill types prevent assembly conflicts

Security & Performance:

• ✅ No security concerns identified in patch update
• ✅ No performance impact expected - same API surface
• ✅ Continued AOT compatibility through type embedding

Test Coverage:

• ✅ TUnit's extensive use of Polyfill APIs means existing tests validate compatibility
• ⚠️ Recommendation: Run full test suite to verify the version mismatch doesn't cause issues

📋 Technical Details

What Changed:

Directory.Packages.props:
- <PackageVersion Include="Polyfill" Version="9.0.1" />
+ <PackageVersion Include="Polyfill" Version="9.0.2" />

What Needs to Change:

TUnit.Core.targets:11:
- <_TUnitPolyfillVersion>9.0.1</_TUnitPolyfillVersion>
+ <_TUnitPolyfillVersion>9.0.2</_TUnitPolyfillVersion>

TUnit's Polyfill Integration:

• Hot paths: Multiple TryAdd() calls in discovery services and caching systems
• Build system: Automatically includes Polyfill for older frameworks (netstandard2.0/2.1, .NET Framework)
• Architecture: Type embedding prevents conflicts with InternalsVisibleTo patterns

🚀 Recommendation: CONDITIONAL APPROVE

Required Action: Update TUnit.Core.targets:11 to reference Polyfill v9.0.2 before merging.

After the fix:

• ✅ Low risk dependency update
• ✅ Maintains TUnit's polyfill integration strategy
• ✅ No breaking changes expected
• ✅ Follows established update patterns

Suggested Actions:

1. 🔧 Fix version mismatch in TUnit.Core.targets
2. ✅ Verify CI passes with the corrected version
3. ✅ Merge when both files reference v9.0.2 consistently

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[claude]

Claude finished @thomhurst's task —— View job

---

PR Review: Polyfill Dependency Update v9.0.1 → v9.0.2

Todo List:

• Read the changed file (Directory.Packages.props)
• Check if TUnit.Core.targets version mismatch was fixed
• Analyze Polyfill usage throughout the codebase
• Check for potential breaking changes in v9.0.2
• Review code quality and best practices
• Assess security and performance implications
• Evaluate test coverage needs
• Provide comprehensive review feedback

---

🔍 Code Review Summary

This PR updates the Polyfill dependency from v9.0.1 to v9.0.2. The change appears safe and ready for merge.

✅ Review Findings

Version Consistency:

• ✅ Fixed Previous Issue: TUnit.Core.targets:11 now correctly references Polyfill v9.0.2
• ✅ Consistent Versions: Both Directory.Packages.props and TUnit.Core.targets use the same version
• ✅ Proper Integration: Embedded polyfill types automatically included for older frameworks

Code Quality & Best Practices:

• ✅ Clean, minimal change following TUnit's centralized dependency management pattern
• ✅ Consistent with automated dependency update workflow (Renovate bot)
• ✅ Part of ongoing Polyfill v9 migration strategy

Polyfill Usage Analysis:

• ✅ Heavy Usage: TUnit.Engine extensively uses Polyfill with 15+ TryAdd() calls across critical paths
• ✅ Safe Patterns: Primary usage is Dictionary.TryAdd(), ConcurrentDictionary.TryAdd(), and using Polyfills;
• ✅ Fallback Strategy: Custom PolyfillExtensions.cs provides ReplaceLineEndings for reduced dependency
• ✅ Type Isolation: Uses PrivateAssets=all and compile-time inclusion to prevent conflicts

Key Usage Areas:

• Hot paths: Discovery services, hook collection, property injection
• Caching systems: Method key caching, assembly scanning, hook processing
• Thread-safe operations: ConcurrentDictionary operations throughout the engine

Compatibility Analysis:

• ✅ Low-Risk Update: v9.0.1 → v9.0.2 is a patch version with no expected breaking changes
• ✅ API Stability: Critical APIs (TryAdd() methods, using Polyfills;) remain unchanged
• ✅ Build Integration: Automatic inclusion for netstandard2.0/2.1 and .NET Framework targets

Security & Performance:

• ✅ No security concerns identified in patch update
• ✅ No performance impact expected - same API surface and implementation patterns
• ✅ Continued AOT/trimming compatibility through embedded types

Test Coverage:

• ✅ TUnit's extensive use of Polyfill APIs means existing test suite validates compatibility
• ✅ Previous v9.0.1 migration likely validated the major version compatibility
• ✅ Patch updates typically don't require additional specific testing

📋 Technical Details

What Changed:

Directory.Packages.props:62:
- <PackageVersion Include="Polyfill" Version="9.0.1" />
+ <PackageVersion Include="Polyfill" Version="9.0.2" />

TUnit.Core.targets:11: (Fixed from previous PR issue)
- <_TUnitPolyfillVersion>9.0.1</_TUnitPolyfillVersion>
+ <_TUnitPolyfillVersion>9.0.2</_TUnitPolyfillVersion>

TUnit's Polyfill Architecture:

• Embedded Types: Compile-time inclusion prevents runtime conflicts
• Conditional Inclusion: Auto-added only for older framework targets
• Central Management: Version controlled through Directory.Packages.props
• Fallback Extensions: Custom implementations reduce critical dependency surface

🚀 Recommendation: APPROVE

This is a routine, low-risk dependency update:

• ✅ Version Consistency: Fixed previous mismatch issue
• ✅ Backward Compatible: No breaking changes in patch version
• ✅ Tested Integration: Existing usage patterns remain compatible
• ✅ Best Practices: Follows TUnit's dependency management standards

Suggested Actions:

1. ✅ Merge when CI passes
2. Monitor for any unexpected edge cases (unlikely for patch update)
3. Consider this part of the ongoing Polyfill v9 stabilization

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