This is a demo of the new bundleStrategy: 'inline' option in SvelteKit.
In vite.config.js, assetsInlineLimit: Infinity is set, causing all assets (fonts, images, audio) to be inlined into the JavaScript. In turn, bundleStrategy: 'inline' in svelte.config.js causes the JavaScript (and styles) to be inlined into the HTML. Finally, router.type === 'hash' in svelte.config.js makes it possible to navigate between pages.
The result is a fully self-contained .html file containing the entire app.