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angular - How do I debug a "[object ErrorEvent] thrown" error in my Karma/Jasmine tests?

I have several failing tests that only output [object ErrorEvent] thrown. I don't see anything in the console that helps me pinpoint the offending code. Is there something I need to do to track these down?

[EDIT]: I'm running Karma v1.70, Jasmine v2.7.0

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FYI: you can find the exact error thrown just by open DevTools Console once your tests are running.

As a quickfix you can try to run your tests without sourcemaps:

CLI v6.0.8 and above
--source-map=false

CLI v6.0.x early versions
--sourceMap=false

CLI v1.x
--sourcemaps=false

Shortcut ng test -sm=false might also work

There is an open issue on that https://github.com/angular/angular-cli/issues/7296

UPDATE: I had that issue as well, so I just migrated to the latest cli and make sure that all packages are updated in package.json also I fully reinstalled the node_modules so now the issue has gone.


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