Refactoring

This skill helps developers modernize React applications by providing comprehensive guidance on upgrading from React 16 to 18, migrating class components to functional components with hooks, and adopting concurrent features like Suspense and Transitions. It includes code examples, codemod commands, and migration checklists.

This skill provides setup instructions for Eclipse JDT.LS, a Java language server that enables code intelligence, refactoring, and enhanced editing support for .java files in Claude Code. Requires Java 17+ and manual jdtls installation.

This skill integrates the OpenAI Codex CLI with Claude Code, allowing users to run code analysis, refactoring, and automated editing tasks. It provides a structured workflow with explicit permission prompts before executing high-impact operations, and supports resuming previous Codex sessions.

A methodology skill that helps prevent semantic code duplication by maintaining a CODE_INDEX.md capability index. It provides guidelines for checking existing code before writing new functions, documenting files and functions properly, and periodically auditing for duplicate functionality.

Safe Refactoring provides a structured methodology for improving code quality without changing functionality. It includes a code smells catalog, refactoring patterns reference, and enforces behavior preservation through mandatory test validation before and after each change.

Use when Code implementation and refactoring, architecturing or designing systems, process and workflow improvements, error handling and validation. Provide tehniquest to avoid over-engineering and apply iterative improvements.