refactor-code

Code smell detection identifies structural issues like long functions, duplicated code, and deep nesting in legacy code. Analyzing these bad smells highlights maintainability risks and pinpoints where refactoring is needed before feature iteration.

The best way to refactor duplicated code and deep nesting without altering external behavior is applying techniques like Extract Function and Introduce Parameter Object. These methods restructure internal logic while preserving original outputs.

To break down a long function and reduce technical debt, apply the Extract Function refactoring technique to split complex logic into smaller, manageable functions. This improves code readability and makes the codebase easier to test and maintain.

Yes, existing test cases are required to validate refactored code. Running tests before and after refactoring ensures the structural changes improve maintainability without altering the original external behavior or introducing regressions.

Refactoring suggestions can fix magic numbers and excessive parameters by recommending specific techniques like Introduce Parameter Object. This replaces complex parameter lists and hardcoded values with structured, maintainable code objects.