nestjs-expert

Identify and resolve Nest.js architecture and dependency injection issues.

218|14|Updated Apr 5, 2025
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npx skills add https://github.com/cin12211/orca-q --skill nestjs-expert-cin12211
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Skill: nestjs-expert
Source: https://github.com/cin12211/orca-q/tree/main/.agent/skills/nestjs-expert
Command: npx skills add https://github.com/cin12211/orca-q --skill nestjs-expert-cin12211

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Nest.js projects often suffer from tangled module boundaries, DI pitfalls, and inconsistent testing and authentication implementations. This skill provides expert guidance to design scalable module structures, robust dependency injection, and secure, testable Nest.js apps.

Core Features & Use Cases

  • Module Architecture & Dependency Injection: design clear module boundaries, avoid circular dependencies, and define reusable providers.
  • Controllers, Middleware, Guards, Interceptors & Pipes: implement robust request handling with proper lifecycle and validation.
  • Testing Strategies: plan and implement unit and integration tests with Jest and Supertest.
  • Database & Authentication Integration: integrate TypeORM/Mongoose and Passport.js authentication with best practices.
  • Refactoring Scenarios: migrate monoliths to modular domains, resolve DI issues, and improve test coverage.

Quick Start

Explain your Nest.js project and request architecture optimization. Example: "Analyze a Nest.js app with circular dependencies and propose a module reorganization and DI strategy."

Frequently Asked Questions about nestjs-expert

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

FAQPage Schema
How do I resolve circular dependencies in Nest.js modules?

To resolve circular dependencies in Nest.js modules, reorganize boundaries and apply forward references. This skill analyzes your architecture to propose a modular domain structure and dependency injection strategy that eliminates tangled provider loops.

What is the best way to structure Nest.js guards and interceptors for authentication?

The best way to structure Nest.js authentication is by implementing robust guards and interceptors with Passport.js. This skill provides actionable recommendations to optimize request handling lifecycles, ensuring secure and testable validation pipelines with minimal code changes.

How do I write integration tests for Nest.js using Jest and Supertest?

Write integration tests for Nest.js using Jest and Supertest by planning testing strategies that validate controllers and services. This skill guides you in implementing unit and integration tests to improve your application's test coverage and maintainability.

Does this approach work with TypeORM and Mongoose database integrations?

Yes, this approach works with TypeORM and Mongoose database integrations. The skill provides expert guidance to apply best practices across database integration and Passport.js authentication, ensuring scalable module structures and robust dependency injection within your Nest.js project.

Why does my Nest.js dependency injection fail when using custom providers?

Nest.js dependency injection fails when custom providers lack proper scoping or module boundaries. This skill identifies DI pitfalls and defines reusable providers, offering concrete recommendations to fix injection issues and improve overall application structure.

How to migrate a monolithic Nest.js app to modular domains?

To migrate a monolithic Nest.js app to modular domains, refactoring scenarios are applied to untangle module boundaries and resolve dependency injection issues. This skill provides a clear module reorganization strategy to improve structure, testability, and performance.