@fluixi/head
Built-in, reactive, SSR-first SEO & document-head management for Fluixi. No external library: it's a core part of the framework.
import { seo, jsonld } from '@fluixi/head';
seo({
title: 'Home',
titleTemplate: '%s · Fluixi',
description: 'A fine-grained reactive framework.',
canonical: 'https://fluixi.com/',
og: { type: 'website', image: 'https://fluixi.com/og.png', siteName: 'Fluixi' },
twitter: { card: 'summary_large_image', site: '@fluixi' },
jsonLd: jsonld.website({ name: 'Fluixi', url: 'https://fluixi.com', searchUrl: 'https://fluixi.com/s?q=' }),
});
What it does
- Reactive: pass a signal (or a function reading one) and the document updates live:
const title = $signal('Dashboard'); seo(() => ({ title: title() })); // document.title tracks the signal — no reload - SSR-first:
renderHead(registry)serializes the resolved tags into<head>markup plus<html>attributes; the client reconciler reuses those tags by key → no hydration mismatch. - Deduplicated: one title, one description, one canonical; repeatable tags (extra
og:image, hreflang alternates, JSON-LD) accumulate. Last write wins for singletons. - Nested inheritance: register from a layout, then a page; child values override, arrays merge.
- Typed: every property is typed, including Open Graph, Twitter, robots, icons, verification.
Surface
title, titleTemplate, description, keywords, author, robots (string or object),
canonical, lang, themeColor, viewport, charset, generator, applicationName,
referrer, colorScheme, manifest, Open Graph (incl. multiple images, video, audio,
article/book/profile), Twitter cards, JSON-LD, alternates (hreflang), feeds (RSS),
icons (favicon/apple/mask/shortcut/ms-tile), verification (google/bing/yandex/pinterest),
base, and meta/link/script escape hatches.
JSON-LD helpers
jsonld.organization · person · website · webPage · searchAction · article · blogPosting · faq · product · breadcrumb · videoObject · event · localBusiness · softwareApplication · custom.
Components
<Title>, <Meta>, <Link>, <Script>, <Base>, <JsonLD>: render nothing, register metadata,
work on server + client (a signal passed in updates the document live).
Sitemap & robots
Pure generators: generateSitemap(entries) (lastmod / changefreq / priority / hreflang / images /
videos), chunkSitemap + generateSitemapIndex (50k splitting), and generateRobots(opts)
(rules / host / sitemaps, environment-aware disallow-all for previews).
Status
This is the engine (Phase 1): registry + resolution/dedupe + SSR serialize + reactive client reconcile + JSON-LD + components + sitemap/robots generators, fully tested.
Planned integrations (Phase 2): seo route exports + nested-layout wiring in @fluixi/router,
automatic <head> injection in the @fluixi/server SSR/stream pipeline, robots.txt/sitemap.xml
emission from the @fluixi/start build, a devtools panel, an SEO validator, and an image-metadata
pipeline.