effective-typescript

Review TypeScript code for anti-patterns by applying the 62 Effective TypeScript principles to identify usage of any, non-null assertions, and plain string types. The skill analyzes existing code against these guidelines to enforce disciplined type safety and correct type design practices.

Enforce type safety during a JavaScript to TypeScript migration by applying Effective TypeScript principles to refine API surfaces and guide type-design work. The skill provides categorized reference materials and guidelines to strengthen type inference and correct anti-patterns across the migration.

Yes, you can generate idiomatic TypeScript code using the Write mode, which produces code that adheres to Effective TypeScript principles. It operates alongside a Review mode, allowing you to both write new type-safe code and analyze existing projects for type correctness.

Yes, this skill helps with API surface refinement and type design discussions by analyzing TypeScript code to improve type correctness. It leverages Effective TypeScript principles to identify anti-patterns like interface-of-unions and provides guidelines for architectural decisions.

The limitations of using Effective TypeScript principles for static analysis include relying strictly on the 62 items from the book, meaning it focuses on type correctness and anti-patterns rather than runtime performance or general architectural design outside of type safety.