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Prepares a NestJS service for production: graceful shutdown, health/readiness, structured logs, config, Dockerfile, CI gates, and rollout safety. Use when promoting a service to staging/production or auditing readiness.
Defines the rule base every skill in this pack obeys: file layout, frontmatter, vocabulary, OOP/typing/decoupling axioms, and anti-patterns. Load FIRST before authoring or applying any other skill in this pack.
Designs NestJS feature modules with clean dependency boundaries, provider scopes, and dynamic modules. Use when adding a new feature module, splitting a monolithic AppModule, or fixing tangled imports between modules.
Builds thin NestJS controllers that parse input, invoke a single use case, and map the Result to ApiResponse<T>. Use when adding HTTP endpoints, refactoring fat controllers, or applying API versioning.
Designs NestJS application services as use-case classes that orchestrate domain logic and ports without leaking the framework. Use when creating new use cases, refactoring services that mix HTTP/DB/domain, or moving from anemic services to OOP.
Maps internal AppError hierarchy to HTTP responses through a single global exception filter and a Result-to-HttpException helper. Use when adding new error types, fixing inconsistent error responses, or removing scattered try/catch in controllers.
Implements the Repository pattern with TypeORM in NestJS so domain entities stay framework-free, ORM models live in infrastructure, and transactions are explicit. Use when adding persistence, refactoring leaky ORM usage, or handling transactions across aggregates.
SIGTERM/SIGINT/health) and readiness (/ready) endpointstsc --noEmit, ESLint, tests, npm audit// main.ts
const app = await NestFactory.create(AppModule);
app.enableShutdownHooks();
await app.listen(3000);
@Controller('health')
export class HealthController {
@Get() health() { return { status: 'ok' }; }
@Get('ready') ready() { return { status: 'ready' }; }
}
FROM node:18 AS builder
WORKDIR /app
COPY package*.json ./
RUN npm ci --only=production
COPY . .
RUN npm run build
FROM node:18-alpine
WORKDIR /app
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/node_modules ./node_modules
USER node
CMD ["node", "dist/main.js"]
// Graceful shutdown with connection cleanup
app.enableShutdownHooks();
// Health endpoint returns DB/Redis status
// ❌ No shutdown hooks
const app = await NestFactory.create(AppModule);
await app.listen(3000);
See reference/deployment-patterns.md for full patterns.