When should I use Effect.gen?

Effect.gen should be used whenever you need to perform sequential operations or handle complex logic where the pipe syntax might become difficult to read.

Why does this skill discourage using if/else and loops?

Effect-TS emphasizes functional purity. By using Match and Array modules instead of imperative constructs, you achieve better type safety, exhaustiveness checking, and more composable code.

How does this skill handle domain errors?

It promotes the use of Schema.TaggedError, which allows errors to be treated as first-class citizens that are fully trackable by the TypeScript compiler.

What are the benefits of Schema-first modeling?

Defining data with Effect Schema provides a single source of truth for your types, runtime validation, and automated tools like encoders/decoders, reducing boilerplate and bugs.

Is this skill compatible with existing TypeScript projects?

Yes, it is designed to help you incrementally adopt Effect-TS patterns or maintain high standards in projects already using the Effect ecosystem.

Effect-TS Idiomatic Style

Name: Effect-TS Idiomatic Style
Author: andrueandersoncs

byandrueandersoncs

•

API開発

Enforces functional programming patterns and idiomatic Effect-TS conventions for robust, type-safe TypeScript development.

This skill acts as a specialized architect for the Effect-TS ecosystem, ensuring that Claude adheres to strict functional programming principles. It mandates the elimination of imperative constructs like loops and if/else statements in favor of Effect's powerful Match, Schema, and collection modules. By prioritizing schema-first data modeling and generator syntax, it helps developers build highly composable, maintainable, and predictable backend services that leverage the full power of the Effect ecosystem.

主な機能

01Implements rigorous Schema-first data modeling for automatic validation and type safety.

02Optimizes data manipulation through specialized Array, Record, and Struct utilities.

03Standardizes asynchronous workflows using Effect.gen and pipeable API patterns.

043 GitHub stars

05Eliminates imperative logic by enforcing Pattern Matching and Effect collection modules.

06Promotes the use of Branded types and Tagged Errors for domain-driven design.

ユースケース

01Implementing complex conditional workflows using exhaustive pattern matching.

02Refactoring imperative TypeScript codebases into idiomatic functional Effect-TS.

03Designing type-safe domain models and API schemas using Effect Schema.

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add andrueandersoncs/claude-skill-effect-ts code-style

For use in Claude.ai and ChatGPT

Download Skill