@tanstack/vue-router/dist/esm/headContentUtils.js

Modern and scalable routing for Vue applications

import { useRouter } from "./useRouter.js";
import { useRouterState } from "./useRouterState.js";
import { escapeHtml } from "@tanstack/router-core";
import * as Vue from "vue";
//#region src/headContentUtils.tsx
var useTags = () => {
	const router = useRouter();
	const routeMeta = useRouterState({ select: (state) => {
		return state.matches.map((match) => match.meta).filter(Boolean);
	} });
	const meta = Vue.computed(() => {
		const resultMeta = [];
		const metaByAttribute = {};
		let title;
		[...routeMeta.value].reverse().forEach((metas) => {
			[...metas].reverse().forEach((m) => {
				if (!m) return;
				if (m.title) {
					if (!title) title = {
						tag: "title",
						children: m.title
					};
				} else if ("script:ld+json" in m) try {
					const json = JSON.stringify(m["script:ld+json"]);
					resultMeta.push({
						tag: "script",
						attrs: { type: "application/ld+json" },
						children: escapeHtml(json)
					});
				} catch {}
				else {
					const attribute = m.name ?? m.property;
					if (attribute) if (metaByAttribute[attribute]) return;
					else metaByAttribute[attribute] = true;
					resultMeta.push({
						tag: "meta",
						attrs: { ...m }
					});
				}
			});
		});
		if (title) resultMeta.push(title);
		resultMeta.reverse();
		return resultMeta;
	});
	const links = useRouterState({ select: (state) => state.matches.map((match) => match.links).filter(Boolean).flat(1).map((link) => ({
		tag: "link",
		attrs: { ...link }
	})) });
	const preloadMeta = useRouterState({ select: (state) => {
		const preloadMeta = [];
		state.matches.map((match) => router.looseRoutesById[match.routeId]).forEach((route) => router.ssr?.manifest?.routes[route.id]?.preloads?.filter(Boolean).forEach((preload) => {
			preloadMeta.push({
				tag: "link",
				attrs: {
					rel: "modulepreload",
					href: preload
				}
			});
		}));
		return preloadMeta;
	} });
	const headScripts = useRouterState({ select: (state) => state.matches.map((match) => match.headScripts).flat(1).filter(Boolean).map(({ children, ...script }) => ({
		tag: "script",
		attrs: { ...script },
		children
	})) });
	const manifestAssets = useRouterState({ select: (state) => {
		const manifest = router.ssr?.manifest;
		return state.matches.map((match) => manifest?.routes[match.routeId]?.assets ?? []).filter(Boolean).flat(1).filter((asset) => asset.tag === "link").map((asset) => ({
			tag: "link",
			attrs: { ...asset.attrs }
		}));
	} });
	return () => uniqBy([
		...manifestAssets.value,
		...meta.value,
		...preloadMeta.value,
		...links.value,
		...headScripts.value
	], (d) => {
		return JSON.stringify(d);
	});
};
function uniqBy(arr, fn) {
	const seen = /* @__PURE__ */ new Set();
	return arr.filter((item) => {
		const key = fn(item);
		if (seen.has(key)) return false;
		seen.add(key);
		return true;
	});
}
//#endregion
export { useTags };

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