Looking at the code for the 'no-outline-none' rule, adding an extra check for 'none' should be a small change.
Assuming there's no underlying reason to ignore 'none'.
Some more work might be needed to debug why border: 0 does not trigger any warning.
Right now, this scenario triggers an error/warning for the 'no-outline-none' rule:
But these do not trigger an error/warning:
Looking at the code for the 'no-outline-none' rule, adding an extra check for 'none' should be a small change. Assuming there's no underlying reason to ignore 'none'.
Some more work might be needed to debug why
border: 0
does not trigger any warning.