Fp Ts Pragmatic

This is the fp-ts guide you wish existed when you started. It skips the category theory and goes straight to the five patterns that actually matter: pipe for chaining operations, Option for nullable values, Either for explicit errors, map for transformations, and flatMap for chainable failures. What makes it useful is the "when NOT to use FP" section, which tells you to just use optional chaining for simple null checks and regular loops when they're clearer. The examples are real world stuff like parsing JSON and validating emails, not abstract academic exercises. If you're writing TypeScript and tired of nested null checks or try-catch pyramids, this gives you practical alternatives without requiring a PhD in mathematics.

skills.sh installs: 120
GitHub stars: 39.4K
last updated: Jun 3, 2026

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Install

$ npx -y skills add sickn33/antigravity-awesome-skills --skill fp-ts-pragmatic --agent claude-code

Installs into .claude/skills of the current project.

Files

Pragmatic Functional Programming

Read this first. This guide cuts through the academic jargon and shows you what actually matters. No category theory. No abstract nonsense. Just patterns that make your code better.

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 This Skill

When starting with fp-ts and need practical guidance
When writing TypeScript code that handles nullable values, errors, or async operations
When you want cleaner, more maintainable functional code without the academic overhead
When refactoring imperative code to functional style

When NOT to Use FP

Functional programming is not always the answer. Here's when to keep it simple.

Simple Null Checks

// Just use optional chaining - it's built into the language
const city = user?.address?.city ?? 'Unknown'

SKILL.md on GitHub

Details

Repository: github.com/sickn33/antigravity-awesome-skills
First seen: Jun 3, 2026