jest-runner-rollup

Jest runner for Rollup, designed to integrate Rollup bundling into Jest test runs. Currently at version 1.3.9 (last released in 2020), it works with Rollup ^1.29.1 and Node >=10.13. It plays well in monorepo scenarios, using Jest's runner API to bundle test files with Rollup before execution. Key differentiators: seamless monorepo support, simple configuration, and leverages Rollup's tree-shaking for faster test runs. However, it is no longer actively maintained and may not work with modern Rollup versions (v2+).