define-errors

What problem does it solve?

This Skill simplifies error handling in TypeScript by providing a structured and type-safe way to define, manage, and use custom error variants, preventing common pitfalls and improving code clarity.

Core Features & Use Cases

• Type-Safe Error Definitions: Define domain-specific errors with typed fields using defineErrors.
• Automatic Discriminated Unions: Generates a union type for all error variants, enabling precise error handling.
• Simplified Error Construction: Variant factories directly return Err(...) results.
• Use Case: When building a user authentication service, you can define specific errors like UserNotFoundError, InvalidPasswordError, and EmailAlreadyExistsError with relevant context, making your error handling robust and readable.

Quick Start

Use the define-errors skill to create a new error type named 'ApiError' with variants 'BadRequest' and 'Unauthorized'.