There is already a PR on the way to fix the performance regression with what Jest s doing https://github.com/nodejs/node/pull/49950 https://github.com/nodejs/no

There is already a PR on the way to fix the performance regression with what Jest s doing https://github.com/nodejs/node/pull/49950 https://github.com/nodejs/node/pull/49950 Note we also ship a test runner ourselves pretty recently and it may suit your needs.