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.

When to Use This Skill

• When you want type-safe error handling in TypeScript
• When replacing try/catch with Either and TaskEither patterns
• When building APIs or services that need explicit error types
• When accumulating multiple validation errors

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.

1. Stop Throwing Everywhere

The Problem with Exceptions