Diagnose Nest.js architecture, DI, and testing issues across modules.
npx skills add https://github.com/duynhne/monitoring --skill nestjs-expert-duynhne
Please help me install this Agent Skill. Skill: nestjs-expert Source: https://github.com/duynhne/monitoring/tree/main/.agent/skills/nestjs-expert Command: npx skills add https://github.com/duynhne/monitoring --skill nestjs-expert-duynhne
This skill provides expert guidance to design scalable Nest.js applications, addressing architecture, dependency injection, and testing challenges.
Use this skill to review a Nest.js repository and propose a scalable module structure with DI tokens and testing plan.
High-intent search queries and answers about installing and using this skill.
To structure scalable Nest.js modules, design modular projects with clear provider boundaries, custom DI tokens, and strategic module imports. This approach isolates feature domains, enforces maintainable dependency injection patterns, and prevents circular dependencies across enterprise-grade applications.
The best way to test Nest.js providers is using Jest with the Nest testing module to mock dependencies. Implement a mix of unit tests for individual providers and integration tests using Supertest to validate module wiring and controller behavior in isolation.
To integrate Passport.js JWT authentication, implement custom guards and strategies within your Nest.js modules. This secures endpoints by validating tokens, extracting user payloads, and enforcing access control across services using dependency injection for auth providers.
Yes, this guidance covers TypeORM and Mongoose integration patterns. It helps configure database adapters within Nest.js modules, ensuring proper repository injection, transaction handling, and optimized query performance across enterprise-grade services.
Nest.js dependency injection often fails with custom decorators and interceptors due to incorrect provider scoping or missing module exports. Ensure interceptors are registered properly and all required dependencies are provided within the correct module context.
Yes, you can use Nest.js testing utilities to mock database connections for e2e tests. Override providers in the testing module to return mock repositories or databases, allowing you to validate HTTP endpoints without hitting actual database infrastructure.
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