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@jdevalk/astro-markdown-alternate

v0.1.0

Published

Astro integration that injects <link rel="alternate" type="text/markdown"> into article pages at build time.

Readme

@jdevalk/astro-markdown-alternate

Astro integration that injects <link rel="alternate" type="text/markdown"> into article pages at build time, allowing AI agents and other clients to discover the markdown version of each page.

Described in joost.blog/markdown-alternate/.

Installation

npm install @jdevalk/astro-markdown-alternate

Usage

// astro.config.mjs
import { markdownAlternate } from '@jdevalk/astro-markdown-alternate';

export default defineConfig({
    integrations: [markdownAlternate()],
});

For every built HTML page whose <head> contains og:type="article", the integration appends:

<link rel="alternate" type="text/markdown" href="/your-post.md">

This assumes you have .md endpoints at /{slug}.md. See createMarkdownEndpoint for a ready-made route factory.

Options

markdownAlternate({
    // Override which pages get the link.
    // Default: pages whose HTML contains og:type="article".
    test(pathname, html) {
        return html.includes('"article"');
    },

    // Override the href value.
    // Default: strip trailing slash and append .md.
    href(pathname) {
        const slug = pathname.replace(/^\/|\/$/g, '');
        return slug ? `/${slug}.md` : null;
    },
})

License

MIT