infoq.com/news/2026/10/nestjs-12-observability NestJS 12: ESM Packages, Standard Schema Validation and Native Observability
NestJS 12 moves its core packages to ESM, yet CommonJS apps keep running through Node's require(esm) support, and one developer's benchmarks found no meaningful startup or memory gains. The release also adds Standard Schema validation, a rebuilt CLI and an observability SDK that a rival APM vendor warns could lock teams in.
— via InfoQ, Daniel Curtis