TypeError: Cannot convert undefined or null to object #232
Description
Similarly to #181 this error is visible when running COVERAGE=true ember test --path=dist or COVERAGE=true ember exam --path=dist.
This seems to happen because #182 fixes the problem by defaulting fileLookup in the included hook which is only called when COVERAGE=true ember build ... runs.
When using the --path argument, build does not run hence fileLookup is null again.