Direct electron's console (log and error) to test runner's console, as an option

Is it possible to set things up, so that electron process console output is directed to console of a process that launches spectron?
Sometimes it is useful for a quick check.

Start by tracing how Spectron launches the Electron process and how the test runner exposes its console; the issue names no files or tests to begin with. Confirm the forwarding behavior can be enabled as an option and that Electron log and error output reaches the launching process without changing the default behavior.

Written by the indexing model from the issue text.