Nestjs Project Performance

It swaps default components for alternatives aimed at throughput and tooling speed: Fastify as the HTTP adapter, MikroORM for data access, SWC for compilation, Vitest for tests, and ESM modules for runtime.

The project uses MikroORM with the @mikro-orm/nestjs integration and includes scripts to sync or load entities from a database.

Unit tests use Vitest with vitest-mock-extended for mocks, and the repository also includes a separate end-to-end test suite.

The repository provides a build script that emits a dist directory; the compiled app runs as a Node.js process (ESM) and expects environment variables such as NODE_ENV and PORT.