repository

Create repositories abstracting data access for Clean Architecture feature modules.

Updated Jan 15, 2026

Search Tags:#repository #swift #cache #clean-architecture #domain-model #error-mapping #dto-mapper

Ready to run

npx skills add https://github.com/vjr2005/Challenge --skill repository-vjr2005

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: repository
Source: https://github.com/vjr2005/Challenge/tree/main/.claude/skills/repository
Command: npx skills add https://github.com/vjr2005/Challenge --skill repository-vjr2005

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Creates Repositories that abstract data access to decouple use cases from data sources and provide a clean API for Domain/UseCase interaction.

Core Features & Use Cases

Abstract data access: Provide a stable, testable interface between Domain/UseCase and multiple data sources (Remote/Data Sources).
DTO to Domain mapping and error handling: Centralize transformation logic and domain error mapping for robust error flows.
Cache integration: Support local-first and remote-first strategies with pluggable data sources and cache policies.
Testability: Repositories, Mappers, and Error Mappers are designed for isolated unit testing and easy mocking.

Quick Start

Create a new Repository following the guide in this document and wire it into your feature module.

Frequently Asked Questions about repository

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

FAQPage Schema

What is a repository in clean architecture and when do I need one?▼

A repository in clean architecture abstracts data access to decouple use cases from data sources, providing a stable, testable API for domain interaction. You need one when managing multiple data sources or centralizing DTO-to-domain mapping.

How do I map DTOs to domain models while handling errors in Swift?▼

You can map DTOs to domain models in Swift by centralizing transformation logic within a repository. This approach applies mapper contracts and typed error handling to ensure robust error flows and keep domain layers isolated from data structures.

How do I implement local-first and remote-first cache strategies in Swift?▼

Implement local-first and remote-first cache strategies in Swift by using repositories with pluggable data sources. This design integrates cache policies directly into the repository, allowing you to configure data fetching priorities seamlessly.

Can I use repository patterns to isolate unit tests for use cases?▼

Yes, repository patterns isolate unit tests for use cases by abstracting data access. Repositories, mappers, and error mappers are designed for isolated unit testing, enabling you to inject mock data sources and verify domain logic independently.

Does this repository pattern support typed error handling for remote data sources?▼

Yes, the repository pattern supports typed error handling for remote data sources. It centralizes domain error mapping to ensure robust error flows, satisfying requirements for typed error handling alongside mapper contracts and cache policy integration.