Indicate Warnings/Errors inside console.group()

[Shadow8435]

I like using console.group() and console.groupCollapsed() to structure my console outputs where possible to prevent clutter and to make finding things easier.

Unfortunately, a collapsed group does not indicate whether there are any Errors or Warnings inside it, making it easy to miss them.

I suggest changing the background colour of a group's header to the corresponding colour or displaying a small icon inside the group's header (or both to bring it in line with how errors/warnings are normally displayed in the console) when Warnings or Errors are present inside.

[Jon]

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[glob]

Thank you for the suggestion, sounds like a good idea.

I've created https://bugzilla.mozilla.org/show_bug.cgi?id=2027618 for our engineers to review.