Data Transformation Patterns

Core Principles

Use transformer functions for API response shaping, helper functions for business logic, and utility functions for pure operations. Always organize these in separate files within feature directories.

Why this matters: Separation of concerns makes data transformation testable, maintainable, and reusable across the application.

When to Use This Skill

Use this skill when you need to:

• Transform API responses into application domain models
• Implement data conversion logic between different shapes
• Organize data transformation code in React Native applications
• Structure business logic and calculations
• Create testable transformation pipelines

File Organization Pattern