As reported by Chamila:
The Node.js test_driver.js fails on cross platform tests due to mismatches in leaf elements of the testInsanity() method return value. Node supplying nulls and C++ supplying an empty map and empty list.
Taking the C++ form as the defacto correct wire implementation, this patch updates Node.js to expect/return empty objects rather than null.
Note that Node.js multiplex tests still fail per