How do I debug a “[object ErrorEvent] thrown” error in my Karma/Jasmine tests?

Question

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 t

Answer 1

I was using a proxy in my application defined in proxy.conf.json like:

'/api': { 'target': 'some path', 'changeOrigin': false }

Because Karma wasn't aware of this proxy, it kept trowing errors in the console that the API endpoint could not be found. So after looking in the Karma documentation, I found out that what I could do was to add the "proxies" property in karma.conf.js with the same object from the proxy.conf.json:

proxies: { '/api': { 'target': 'some path', 'changeOrigin': false }}

The error in the console was gone, and the [object errorEvent] was no longer thrown.