If you regenerate package-lock and run tabbable's unit tests, you get the error SyntaxError: 'slot):not([inert]' is not a valid selector
I've narrowed this down to the update of one of jsdom's dependencies: nwsapi@2.2.2 to nwsapi@2.2.3
This breaks unit tests for any consumers of tabbable who install latest and use jsdom.

I'm not sure if the fix is re-writing the [tabindex]:not(slot):not([inert]) selector, or if this is a bug that nwsapi needs to fix. Please advise.