nodejs-backendlisted
Install: claude install-skill lciacci/tessera
# Node.js Backend Skill
---
## Project Structure
```
project/
├── src/
│ ├── core/ # Pure business logic
│ │ ├── types.ts # Domain types
│ │ ├── errors.ts # Domain errors
│ │ └── services/ # Pure functions
│ │ ├── user.ts
│ │ └── order.ts
│ ├── infra/ # Side effects
│ │ ├── http/ # HTTP layer
│ │ │ ├── server.ts # Server setup
│ │ │ ├── routes/ # Route handlers
│ │ │ └── middleware/ # Express middleware
│ │ ├── db/ # Database
│ │ │ ├── client.ts # DB connection
│ │ │ ├── repositories/ # Data access
│ │ │ └── migrations/ # Schema migrations
│ │ └── external/ # Third-party APIs
│ ├── config/ # Configuration
│ │ └── index.ts # Env vars, validated
│ └── index.ts # Entry point
├── tests/
│ ├── unit/
│ └── integration/
├── package.json
└── CLAUDE.md
```
---
## API Design
### Route Handler Pattern
```typescript
// routes/users.ts
import { Router } from 'express';
import { z } from 'zod';
import { createUser } from '../../core/services/user';
import { UserRepository } from '../db/repositories/user';
const CreateUserSchema = z.object({
email: z.string().email(),
name: z.string().min(1).max(100),
});
export function createUserRoutes(userRepo: UserRepository): Router {
const router = Router();
router.pos