Users have written incorrect :host selectors like this: :host[foo]. This selector matches (currently) in Shady DOM but not Shady DOM. Because people have relied on this behavior, it's hard to change now, but the incorrect selector should be highlighted by the linter.
Users have written incorrect
:hostselectors like this::host[foo]. This selector matches (currently) in Shady DOM but not Shady DOM. Because people have relied on this behavior, it's hard to change now, but the incorrect selector should be highlighted by the linter.