effect-best-practices

This skill enforces opinionated, consistent patterns for Effect-TS codebases. These patterns optimize for type safety, testability, observability, and maintainability. The Effect Language Server is essential for Effect development. It catches errors at edit-time that TypeScript alone cannot detect, provides Effect-specific refactors, and improves developer productivity. For CI enforcement: See references/language-server.md for configuration options and CLI tools. Always use Effect.Service for business logic services. This provides automatic accessors, built-in Default layer, and proper dependency declaration. When Context.Tag is acceptable: See references/service-patterns.md for detailed patterns.