Fields

Metadata has every field of the Next.js type, each one typed (the Metadata type exported from @shadow-js/dusk lists them):

• Titles and text: title (a string, or { default, template, absolute }), description, applicationName, authors, generator, keywords, referrer, creator, publisher, category, classification.
• Robots and alternates: robots (directives, and googleBot), alternates (canonical, languages, media, types), metadataBase.
• Icons and manifest: icons (one URL, a list, or icon, shortcut, apple, other), manifest.
• Social cards: openGraph (every type: website, article, book, profile, music.*, video.*, with their own fields, and images, videos, audio), twitter (summary, summary_large_image, app, player).
• Platform and verification: verification (google, yahoo, yandex, me, other), appleWebApp, formatDetection, itunes, facebook, pinterest, appLinks, archives, assets, bookmarks.
• Escape hatches: other (one <meta name> per value) and jsonLd (structured data).

Viewport has width, height, initialScale, minimumScale, maximumScale, userScalable, viewportFit, interactiveWidget, themeColor and colorScheme. viewportContent() builds the viewport meta from them.