Currently the codebase for https://github.com/nodejs/node/blob/362afa52ebe462a39874915e5e70d261db153c58/lib/internal/test_runner/runner.js#L472 accesses some poperties of process, capturing some options there. However, we also expose run() to the end users, therefore we should capture all this information in https://github.com/nodejs/node/blob/362afa52ebe462a39874915e5e70d261db153c58/lib/internal/main/test_runner.js#L68 and pass it down to run() as options.