Generate Effect Data.TaggedError types with contextual payloads and unions.
npx skills add https://github.com/legacy3/wowlab --skill tagged-error
Please help me install this Agent Skill. Skill: tagged-error Source: https://github.com/legacy3/wowlab/tree/main/.claude/skills/tagged-error Command: npx skills add https://github.com/legacy3/wowlab --skill tagged-error
Generate Effect Data.TaggedError types for error handling.
Define a new error class like SpellNotFound with payload including unitId and spellId.
High-intent search queries and answers about installing and using this skill.
TaggedError types are Effect's pattern for structured error handling. Create a subclass with a tag matching the class name, add payload fields for context like IDs and entities, and use it in Effect function signatures. This enforces consistent error structure across your application.
TaggedError provides typed, discriminated error unions with contextual payloads, enabling pattern matching and type-safe error dispatch. Standard errors lack structure; TaggedError enforces a tag identifier and typed data fields for better error propagation and handling.
Combine multiple TaggedError subclasses into a union type. Each error has its own class with a unique tag and relevant payload fields. Union types enable clean error dispatch in Effect handlers, allowing you to match specific error combinations.
Yes. TaggedError is designed for Wowlab Core projects. Define one subclass per error, ensure the tag matches the class name, populate payload with diagnostic fields like IDs and entities, and update function signatures to propagate errors through Effects.
Include identifiers and related entities needed for diagnostics—such as unitId, spellId, or resource references. Payload fields provide context to downstream error handlers and enable meaningful error messages and recovery logic.
No prior setup is required. Start by defining new TaggedError subclasses for errors you encounter. Gradually integrate them into function signatures and Effect chains; you can adopt TaggedError incrementally alongside existing error handling.
dmmulroyConvert better-result TaggedError classes from v1 class-based to v2 factory-based API.
kriegcloudImplement typed error handling in Effect TypeScript with Data.TaggedError and catchTag.
kriegcloudReplace try/catch and null checks with Effect patterns in TypeScript projects.
SamuelSahaEnforce advanced TypeScript type safety patterns and strict compiler options.
