I just can't figure out what's wrong. There's just no IntelliSense at all, like I hover elements and no tooltip appears, not even for bog standard HTML elements that would normally show an MDN summary.
Is there anything like Astro components for Lume? My biggest gripe with a lot of templating engines is that custom components or shortcodes are included with a weird construct like {{ comp button { href: 'bla' } }}{{ /comp }} instead of becoming part of the markup, i.e. <Button href="bla"></Button>. JSX gets me there, but I don't like that I need to export a function which returns the markup. I also can't include style and script tags like with Astro templates. And there are no slots.