How can I tell if a component received slot content?

Usually, if an element has shadow DOM, then its light DOM is not displayed Slots allow to show elements from light DOM in specified places of

These slots are unnamed and are therefore default slots The slot elements don't render, so the rendered tree is much simpler: parent-element>

elements_ the awakening slot Lit-Element with Slots using @webcomponentswebcomponentsjs, lit-element

elemental link fire slot How to access elements under slot using child componentelement hierarchy as slot visible in child component, but it could have bee passed from