Whiskey doesn't report exceptions thrown in child processes that originate outside of a test.

[sam-falvo]

These exceptions cause the test runner to time out, without providing a sensible error message.

Note to myself on how to implement (current brain-dump):

To fix, it looks like we need to insert code somewhere in lib/run_test_file.js close to lines 98-102, to catch any exception, stringify it, and send it along the IPC channel back to the test runner proper. Then, inside the test runner, we need to somehow decode this and provide a sensible (and visible) error diagnostic for the user. Such errors should stop the test run cold as well.

[sam-falvo]

Solving this problem would also solve the secondary problem of how to discover and catch NaNs in the coverage report.