Node.js test runner executes 1,082 tests across monorepo without external frameworks

A developer executed 1,082 passing tests across six workspaces in a pnpm monorepo without installing any external testing frameworks like Jest or Vitest. The tests relied solely on Node.js's built-in test runner and assertion module. Four different command variations were used to invoke the runner, reflecting different module resolution strategies required by each workspace. The shared packages used Node's native resolver, while the Next.js and Expo apps required the tsx loader to handle extensionless imports typical in bundler environments. This approach eliminated framework dependencies by leveraging Node's native capabilities where possible.