Can NestJS v12’s Full ESM Switch, Vitest Adoption, and Zod Integration Upgrade Old Projects Smoothly?
The article examines NestJS v12’s upcoming major changes—including a full migration to ESM, replacing Jest with Vitest, and native Zod schema support—explains the technical reasons behind them, outlines migration timelines, and evaluates how both new and existing projects can adopt the updates with minimal disruption.
