Agent skill · writing content · sickn33
fp-errors
Stop throwing everywhere - handle errors as values using Either and TaskEither for cleaner, more predictable code
Why this skill is useful
Provides practical patterns for error handling in TypeScript using Either and TaskEither that the AI wouldn't reliably generate on its own.
What it needs
About 1k tokens when loaded. Last updated 2026-08-07. 44,571 stars on the source repository.
What this skill does
Practical Error Handling with fp-ts This skill teaches you how to handle errors without try/catch spaghetti. No academic jargon - just practical patterns for real problems. The core idea: Errors are just data. Instead of throwing them into the void and hoping someone catches them, return them as values that TypeScript can track. Detailed Guide Read the detailed guide before executing this skill. It retains the complete procedure and reference material. Treat its safety, prerequisites, and validation requirements as mandatory. For focused work, load the relevant sections; for end-to-end work, read the guide completely. When to Use You need to replace exception-heavy code with Either or TaskEither. The task involves validation, domain errors, or clearer error contracts in TypeScript. You want pragmatic fp-ts error-handling guidance for real application code. --- Limitations Use this skill only when the task clearly matches the scope described above. Do not treat the output as a substitute for environment-specific validation, testing, or expert review. Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills sickn33/fp-errors