Starting in v7.7.0 running `npm` (no args) is printing an empty newline
to stderr.
This fixes that by correctly exiting via errorHandler and avoiding
hitting the cb() never called error and adds a test to make sure we
avoid that regression moving forward.
Fixes: https://github.com/nodejs/node/pull/37678#issuecomment-808734374
Co-authored-by: Gar <gar+gh@danger.computer>
Lightweight smoke test suite that runs common commands so that we can
also have a holistic check during CI.
PR-URL: https://github.com/npm/cli/pull/2959
Credit: @ruyadorno
Close: #2959
Reviewed-by: @nlf