Determining if error is fatal

[bartoszgableta]

Is your feature request related to a problem? Please describe.
Hi, my problem is pretty similar to #1475 that is stale, but since it is possible now to set log level to "fatal", I thought I will reopen this topic. In short: is it possible to determine if error is fatal, and if not, could it be added?

Describe the solution you'd like
A property in Error object that says if error is fatal or not

Describe alternatives you've considered

Additional context

[dsilhavy]

I agree that the error handling in dash.js is not optimal, and the errors should include a severity field. Maybe this is something we can look into once the common error codes are added: streaming-video-technology-alliance/common-media-library#112