Node.js Tech Stack

Sep 7, 2026 · Backend Development

NestJS 12: ESM Core Packages, CJS Compatibility & New Toolchain Defaults

NestJS 12 releases core packages as ESM while preserving CommonJS compatibility via Node.js's require(esm), introduces Vitest and oxlint as defaults for new ESM projects, adopts Rspack for monorepos, adds Standard Schema support for validation and serialization, and includes an official observability SDK with distributed tracing.