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nestjs-expert

Debug Nest.js module architecture, DI errors, and optimize application performance.

41|12|Updated Jan 16, 2026
Search Tags:#typescript#testing#api#backend#dependency injection#nestjs
One-click install
npx skills add https://github.com/nguyenphp/antigravity-marketing --skill nestjs-expert-nguyenphp
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: nestjs-expert
Source: https://github.com/nguyenphp/antigravity-marketing/tree/main/templates/.agent/skills/nestjs-expert
Command: npx skills add https://github.com/nguyenphp/antigravity-marketing --skill nestjs-expert-nguyenphp

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill addresses complex challenges in Nest.js application development, including architecture, dependency injection, testing, database integration, and authentication, ensuring robust and scalable backend solutions.

Core Features & Use Cases

  • Architecture & DI: Solves issues with module structure, circular dependencies, and provider scoping.
  • Testing: Guides on effective unit and e2e testing strategies with Jest and Supertest.
  • Database & Auth: Provides solutions for TypeORM/Mongoose integration and Passport.js authentication.
  • Use Case: Debug a "Nest can't resolve dependencies" error in a complex service by analyzing module imports and provider configurations.

Quick Start

Use the nestjs-expert skill to help resolve a circular dependency issue in the UserService and AuthService.

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 a Nest.js application architecture?▼

To resolve circular dependencies in Nest.js architecture, you must analyze module imports and provider configurations, often utilizing forward references to break the dependency cycle effectively.

Why does Nest.js throw a "Nest can't resolve dependencies" error during testing?▼

Nest.js throws a "Nest can't resolve dependencies" error when testing if the required providers are missing from the module imports, requiring an analysis of the module configuration to properly mock or supply dependencies.

What is the best way to set up unit and e2e testing strategies for Nest.js APIs?▼

The best way to establish testing strategies for Nest.js APIs is by utilizing Jest for unit tests and Supertest for end-to-end tests, ensuring robust validation of your backend application logic.

Does Nest.js work with TypeORM and Mongoose for database integration?▼

Yes, Nest.js works seamlessly with TypeORM and Mongoose for database integration, providing specialized solutions to connect your enterprise-grade Node.js backend to relational and document databases.

How do I configure Passport.js authentication in a Nest.js backend?▼

Configuring Passport.js authentication in a Nest.js backend involves integrating the framework's security modules to manage user authentication strategies, ensuring robust and scalable backend access control.

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