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.

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.

1. Stop Throwing Everywhere

The Problem with Exceptions

Exceptions are invisible in your types. They break the contract between functions.