Typescript Advanced Types

The typescript-advanced-types skill empowers AI agents to generate, refactor, and validate complex TypeScript type definitions with precision. It handles advanced patterns like conditional types, mapped types, and utility types to ensure code safety and clarity in backend systems.

When to use it

• Refactoring legacy JavaScript codebases into strongly typed TypeScript without losing functionality.
• Generating strict interface schemas for API responses and request bodies.
• Implementing complex type guards to narrow union types at runtime safely.
• Creating reusable utility types (e.g., Partial, Pick, Omit) across large projects.

Key capabilities

• Generates advanced TypeScript type definitions including generics and conditional logic.
• Validates code against strict type constraints to prevent runtime errors.
• Refactors existing code to incorporate sophisticated typing strategies.
• Supports complex scenarios involving mapped types and template literal types.

Example prompts

• "Convert this JavaScript function into TypeScript using a generic type parameter that adapts based on the input argument."
• "Create a utility type that makes all properties of an object optional except for the id field."
• "Refactor this API response handler to use discriminated unions for better error handling."

Tips & gotchas

Ensure your AI agent has access to the full project context, as advanced types often depend on specific module structures. Start with simpler type patterns before attempting complex conditional or mapped types to avoid over-engineering.