NestJS v12 Roadmap: Full ESM Migration, Standard Schema Validation and Modernised Toolchain (opens in new tab)

NestJS has announced a draft pull request for its upcoming v12.0.0 release, scheduled for early Q3 2026. Key changes include a transition from CommonJS to ESM, native Standard Schema support in route decorators, and shifts in testing and linting tools. Vitest will replace Jest, and oxlint will replace ESLint, while Rspack will replace Webpack for bundling. By Daniel Curtis