Agent skill · software engineering · sickn33
fp-ts-react
Practical patterns for using fp-ts with React - hooks, state, forms, data fetching. Use when building React apps with functional programming patterns. Works with React 18/19, Next.js 14/15.
Why this skill is useful
Provides specific patterns and examples for using fp-ts with React, enhancing type-safe state management and error handling that the AI may not 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
Functional Programming in React Practical patterns for React apps. No jargon, just code that works. 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 building React apps with fp-ts for type-safe state management When handling loading/error/success states in data fetching When implementing form validation with error accumulation When using React 18/19 or Next.js 14/15 with functional patterns --- When to Use What Situation Use ----------- ----- Value might not exist Option<T> Operation might fail (sync) Either<E, A> Async operation might fail TaskEither<E, A> Need loading/error/success UI RemoteData<E, A> Form with multiple validations Either with validation applicative Dependency injection Context + ReaderTaskEither Prevent re-renders with fp-ts useMemo or fp-ts-react-stable-hooks --- 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-ts-react--9bd555