When an assertion fails on a client unit test, the reporter doesn't log in console or display a sourcemap aware line number

[optilude]

If a client unit test fails, I get an error like:

AssertionError: expected { Object (CountEntries) } to deeply equal { Object (CountEntries) }
    at Context.<anonymous> (http://localhost:3000/app/app.js?hash=77b5e0c7ff91e6ae7d9fa181454b2ce1a986ddd1:688:43)
    at callFn (http://localhost:3000/packages/practicalmeteor_mocha-core.js?hash=5347e988a95085c68a748d38e6a9dd260b1a5db7:4345:21)
    at Test.Runnable.run (http://localhost:3000/packages/practicalmeteor_mocha-core.js?hash=5347e988a95085c68a748d38e6a9dd260b1a5db7:4338:7)
    at Runner.runTest (http://localhost:3000/packages/practicalmeteor_mocha-core.js?hash=5347e988a95085c68a748d38e6a9dd260b1a5db7:4808:10)
    at http://localhost:3000/packages/practicalmeteor_mocha-core.js?hash=5347e988a95085c68a748d38e6a9dd260b1a5db7:4919:12
    at next (http://localhost:3000/packages/practicalmeteor_mocha-core.js?hash=5347e988a95085c68a748d38e6a9dd260b1a5db7:4728:14)
    at http://localhost:3000/packages/practicalmeteor_mocha-core.js?hash=5347e988a95085c68a748d38e6a9dd260b1a5db7:4738:7
    at next (http://localhost:3000/packages/practicalmeteor_mocha-core.js?hash=5347e988a95085c68a748d38e6a9dd260b1a5db7:4670:14)
    at http://localhost:3000/packages/practicalmeteor_mocha-core.js?hash=5347e988a95085c68a748d38e6a9dd260b1a5db7:4706:5
    at timeslice (http://localhost:3000/packages/practicalmeteor_mocha-core.js?hash=5347e988a95085c68a748d38e6a9dd260b1a5db7:12674:27)

With an app-test, I get an exception in the console that references the actual file and line number where the assertion failed (presumably using the sourcemap) and allows for deeper inspection.

With a client unit test, I only get the above, which is annoying, because I now have to re-run the test with a breakpoint to figure out what's actually happened.