NestJS 12 Is Here: Everything That Changed 🚀
NestJS 12 is here, bringing some of the biggest under-the-hood changes to the framework in recent versions. 🚀
In this video, we break down what changed and why it matters:
📦 ESM-first packages — Better compatibility with the modern JavaScript ecosystem while maintaining a smoother migration path for existing projects.
✅ Standard Schema support — Use validation libraries like Zod and Valibot directly with NestJS request parameters and DTO-style validation.
📊 Structured logging & error codes — Cleaner logs for observability and machine-readable error handling for APIs.
🛣️ Route conflict detection — Catch duplicate and shadowed routes during startup instead of discovering them later in production.
🔭 Native observability — Improved instrumentation across HTTP, GraphQL, gRPC, microservices, queues, and scheduled jobs.
Overall, NestJS 12 focuses on reducing boilerplate, improving correctness, and supporting the tools modern development teams already use.
If you’re building backend applications with Node.js and NestJS, this update is definitely worth understanding.
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