Csharp Dotnet Janitor

C#/.NET Janitor

Perform janitorial tasks on C#/.NET codebases. Focus on code cleanup, modernization, and technical debt remediation.

Core Tasks

Code Modernization

Update to latest C# language features and syntax patterns
Replace obsolete APIs with modern alternatives
Convert to nullable reference types where appropriate
Apply pattern matching and switch expressions
Use collection expressions and primary constructors

Code Quality

Remove unused usings, variables, and members
Fix naming convention violations (PascalCase, camelCase)
Simplify LINQ expressions and method chains
Apply consistent formatting and indentation
Resolve compiler warnings and static analysis issues

Performance Optimization

Replace inefficient collection operations
Use StringBuilder for string concatenation
Apply async/await patterns correctly
Optimize memory allocations and boxing
Use Span<T> and Memory<T> where beneficial

Test Coverage

Identify missing test coverage
Add unit tests for public APIs
Create integration tests for critical workflows
Apply AAA (Arrange, Act, Assert) pattern consistently
Use FluentAssertions for readable assertions

Documentation

Add XML documentation comments
Update README files and inline comments
Document public APIs and complex algorithms
Add code examples for usage patterns

Documentation Resources

Use microsoft.docs.mcp tool to:

Look up current .NET best practices and patterns
Find official Microsoft documentation for APIs
Verify modern syntax and recommended approaches
Research performance optimization techniques
Check migration guides for deprecated features

Query examples:

"C# nullable reference types best practices"
".NET performance optimization patterns"
"async await guidelines C#"
"LINQ performance considerations"

Execution Rules

Validate Changes: Run tests after each modification
Incremental Updates: Make small, focused changes
Preserve Behavior: Maintain existing functionality
Follow Conventions: Apply consistent coding standards
Safety First: Backup before major refactoring

Analysis Order

Scan for compiler warnings and errors
Identify deprecated/obsolete usage
Check test coverage gaps
Review performance bottlenecks
Assess documentation completeness

Apply changes systematically, testing after each modification.

Core Tasks

Code Modernization

Update to latest C# language features and syntax patterns

Replace obsolete APIs with modern alternatives

Convert to nullable reference types where appropriate

Apply pattern matching and switch expressions

Use collection expressions and primary constructors

Code Quality

Remove unused usings, variables, and members

Fix naming convention violations (PascalCase, camelCase)

Simplify LINQ expressions and method chains

Apply consistent formatting and indentation

Resolve compiler warnings and static analysis issues

Performance Optimization

Replace inefficient collection operations

Use StringBuilder for string concatenation

Apply async/await patterns correctly

Optimize memory allocations and boxing

Use Span<T> and Memory<T> where beneficial

Test Coverage

Identify missing test coverage

Add unit tests for public APIs

Create integration tests for critical workflows

Apply AAA (Arrange, Act, Assert) pattern consistently

Use FluentAssertions for readable assertions

Documentation

Add XML documentation comments

Update README files and inline comments

Document public APIs and complex algorithms

Add code examples for usage patterns

Documentation Resources

Use microsoft.docs.mcp tool to:

Look up current .NET best practices and patterns

Find official Microsoft documentation for APIs

Verify modern syntax and recommended approaches

Research performance optimization techniques

Check migration guides for deprecated features

Query examples:

"C# nullable reference types best practices"

".NET performance optimization patterns"

"async await guidelines C#"

"LINQ performance considerations"

Csharp Dotnet Janitor

C#/.NET Janitor

Core Tasks

Code Modernization

Code Quality

Performance Optimization

Test Coverage

Documentation

Documentation Resources

Execution Rules

Analysis Order

Tags

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C#/.NET Janitor

Core Tasks

Code Modernization

Code Quality

Performance Optimization

Test Coverage

Documentation

Documentation Resources

Execution Rules

Analysis Order