jjj 0.2.1

A modal interface for Jujutsu.
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---
import type { z } from 'astro/zod';
import context from 'virtual:starlight/project-context';
import config from 'virtual:starlight/user-config';
import { version } from '../package.json';
import type { HeadConfigSchema } from '../schemas/head';
import { fileWithBase } from '../utils/base';
import { createHead } from '../utils/head';
import { localizedUrl } from '../utils/localizedUrl';

const { entry, lang, siteTitle } = Astro.locals.starlightRoute;
const { data } = entry;

const canonical = Astro.site ? new URL(Astro.url.pathname, Astro.site) : undefined;
const description = data.description || config.description;

const headDefaults: z.input<ReturnType<typeof HeadConfigSchema>> = [
	{ tag: 'meta', attrs: { charset: 'utf-8' } },
	{
		tag: 'meta',
		attrs: { name: 'viewport', content: 'width=device-width, initial-scale=1' },
	},
	{ tag: 'title', content: `${data.title} ${config.titleDelimiter} ${siteTitle}` },
	{ tag: 'link', attrs: { rel: 'canonical', href: canonical?.href } },
	{ tag: 'meta', attrs: { name: 'generator', content: Astro.generator } },
	{
		tag: 'meta',
		attrs: { name: 'generator', content: `Starlight v${version}` },
	},
	// Favicon
	{
		tag: 'link',
		attrs: {
			rel: 'shortcut icon',
			href: fileWithBase(config.favicon.href),
			type: config.favicon.type,
		},
	},
	// OpenGraph Tags
	{ tag: 'meta', attrs: { property: 'og:title', content: data.title } },
	{ tag: 'meta', attrs: { property: 'og:type', content: 'article' } },
	{ tag: 'meta', attrs: { property: 'og:url', content: canonical?.href } },
	{ tag: 'meta', attrs: { property: 'og:locale', content: lang } },
	{ tag: 'meta', attrs: { property: 'og:description', content: description } },
	{ tag: 'meta', attrs: { property: 'og:site_name', content: siteTitle } },
	// Twitter Tags
	{
		tag: 'meta',
		attrs: { name: 'twitter:card', content: 'summary_large_image' },
	},
];

if (description)
	headDefaults.push({
		tag: 'meta',
		attrs: { name: 'description', content: description },
	});

// Link to language alternates.
if (canonical && config.isMultilingual) {
	for (const locale in config.locales) {
		const localeOpts = config.locales[locale];
		if (!localeOpts) continue;
		headDefaults.push({
			tag: 'link',
			attrs: {
				rel: 'alternate',
				hreflang: localeOpts.lang,
				href: localizedUrl(canonical, locale, context.trailingSlash).href,
			},
		});
	}
}

// Link to sitemap, but only when `site` is set.
if (Astro.site) {
	headDefaults.push({
		tag: 'link',
		attrs: {
			rel: 'sitemap',
			href: fileWithBase('/sitemap-index.xml'),
		},
	});
}

// Link to Twitter account if set in Starlight config.
if (config.social?.twitter) {
	headDefaults.push({
		tag: 'meta',
		attrs: {
			name: 'twitter:site',
			content: new URL(config.social.twitter.url).pathname,
		},
	});
}

const head = createHead(headDefaults, config.head, data.head);
---

{head.map(({ tag: Tag, attrs, content }) => <Tag {...attrs} set:html={content} />)}