Breaking Change Analysis

Analyze code for breaking changes during migration.

Migration Checklist

API Incompatibilities

• Identify changed method signatures and return types
• Catalog removed or renamed public APIs
• Check for changed default parameter values
• Verify event and callback contract changes

Removed & Deprecated Features

• List all removed APIs with replacement alternatives
• Identify deprecated features scheduled for removal
• Check for removed configuration options
• Verify removed CLI flags or environment variables

Behavioral Changes

• Detect changed error handling semantics
• Identify altered sorting, ordering, or iteration behavior
• Check for changed concurrency or async behavior
• Verify modified lifecycle hook timing or order

Type & Signature Changes

• Identify changed generic type parameters
• Check for narrowed or widened type constraints
• Verify changed nullability annotations
• Detect incompatible interface or protocol changes

Output Format

Report findings with risk ratings: