Node.js 7 has command-line switches --trace-events-enabled & --trace-event-categories that look promising for debugging simple problems, but the tracing documentation is rather sparse.
I don't see for example a list of what trace event categories may be specified on the command line or API level docs. Perhaps there is a command switch to display categories. Is there a trace category for tracing module loading which could be used in Error: Cannot find module messages?
Does Node 6 have anything similar from the module load trace standpoint?