effect-patterns

Provide reusable Effect-based patterns for TypeScript backend services, repositories, errors, and tests.

2|Updated Feb 13, 2026

Search Tags:#typescript #error-handling #effect #backend-patterns #repository-pattern #service-pattern

Ready to run

npx skills add https://github.com/yutna/vibe-next-template --skill effect-patterns-yutna

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: effect-patterns
Source: https://github.com/yutna/vibe-next-template/tree/main/.claude/skills/effect-patterns
Command: npx skills add https://github.com/yutna/vibe-next-template --skill effect-patterns-yutna

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Backend development often leads to scattered patterns and brittle code. This Skill provides reusable Effect-based patterns for building typed services, repositories, and error handling, improving consistency and testability.

Core Features & Use Cases

Service and Repository patterns: clear separation of concerns, composable logic, and easier testing for backend layers.
Error handling and composition: tagged errors, Effect-based workflows, and robust failure semantics.
Batch processing and resolvers: efficient data fetching with batched calls and resolver-style orchestration.
Testing guidance: practical examples and patterns to validate Effect-based code.

Quick Start

Follow the examples to implement a backend service using the Effect patterns shown.

Frequently Asked Questions about effect-patterns

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I structure backend services in TypeScript using Effect?▼

Structure backend services in TypeScript using Effect by applying composable service and repository patterns that enforce clear separation of concerns. This approach improves consistency and makes testing backend layers significantly easier.

What is the best way to handle errors in an Effect backend application?▼

Handle errors in an Effect backend application by using tagged errors and Effect-based workflows to ensure robust failure semantics. This method provides composable logic and reliable error handling across your server-side code.

How do I implement batch processing and resolvers for data fetching with Effect?▼

Implement batch processing and resolvers with Effect to achieve efficient data fetching through batched calls and resolver-style orchestration. This pattern optimizes data loading workflows in TypeScript backend projects.

Does the Effect library work well for testing repository and service layers?▼

The Effect library works well for testing repository and service layers by providing practical examples and patterns to validate Effect-based code. Composable logic allows developers to test backend layers in isolation.

Why should I use tagged errors instead of standard exceptions in TypeScript backend patterns?▼

Use tagged errors instead of standard exceptions in TypeScript backend patterns to achieve robust failure semantics and composable effects. Standard exceptions often lead to scattered patterns and brittle backend code.