c706d845eb
* feat: restart config on add, remove, update * fix: reload for root project configs only * fix: throw when userConfigPath can't resolve * chore: changeset * wip: remove normalizePath before writeFile * refactor: invalidateWithCache -> isConfigReload * wip: mustExist? * debug: config loaded successfully * debug: more logs * debug: MORE logging * fix: normalize resolved config path * debug: yet MORE logging * chore: bump proload * fix: use file path, not URL.pathname * Revert "wip: mustExist?" This reverts commit 8ca8662132532dcdc9fd120868e615ddc60f498e. * chore: remove console log * feat: cleanup restart message, better invalid config handling * chore: update lockfile * chore: fix types * fix: throw helpful error when config does not exist * docs: remove "restart dev server" from integrations * docs: make sure to restart -> try restarting Co-authored-by: Nate Moore <nate@astro.build> |
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CHANGELOG.md | ||
package.json | ||
README.md | ||
tsconfig.json |
@astrojs/mdx 📝
This Astro integration enables the usage of MDX components and allows you to create pages as .mdx
files.
Why MDX?
MDX is the defacto solution for embedding components, such as interactive charts or alerts, within Markdown content. If you have existing content authored in MDX, this integration makes migrating to Astro a breeze.
Want to learn more about MDX before using this integration?
Check out “What is MDX?”, a deep-dive on the MDX format.
Installation
Quick Install
The astro add
command-line tool automates the installation for you. Run one of the following commands in a new terminal window. (If you aren't sure which package manager you're using, run the first command.) Then, follow the prompts, and type "y" in the terminal (meaning "yes") for each one.
# Using NPM
npx astro add mdx
# Using Yarn
yarn astro add mdx
# Using PNPM
pnpm astro add mdx
If you run into any issues, feel free to report them to us on GitHub and try the manual installation steps below.
Manual Install
First, install the @astrojs/mdx
package using your package manager. If you're using npm or aren't sure, run this in the terminal:
npm install @astrojs/mdx
Then, apply this integration to your astro.config.*
file using the integrations
property:
astro.config.mjs
import { defineConfig } from 'astro/config';
import mdx from '@astrojs/mdx';
export default defineConfig({
// ...
integrations: [mdx()],
});
Usage
You can add MDX pages to your project by adding .mdx
files within your src/pages/
directory.
Components
To use components in your MDX pages in Astro, head to our UI framework documentation. You'll explore:
- 📦 how framework components are loaded,
- 💧 client-side hydration options, and
- 🪆 opportunities to mix and nest frameworks together
Client Directives are still required in .mdx
files.
Note
:
.mdx
files adhere to strict JSX syntax rather than Astro's HTML-like syntax.
Variables
MDX supports export
statements to add variables to your templates. These variables are accessible both from the template itself and as named properties when importing the template somewhere else.
For instance, you can export a title
field from an MDX page or component to use as a heading with {JSX expressions}
:
export const title = 'My first MDX post'
# {title}
This title
will be accessible from import
and glob statements as well:
---
// src/pages/index.astro
const posts = await Astro.glob('./*.mdx');
---
{posts.map(post => <p>{post.title}</p>)}
See the official "how MDX works" guide for more on MDX variables.
Exported properties
Alongside your MDX variable exports, we generate a few helpful exports as well. These are accessible when importing an MDX file via import
statements or Astro.glob
.
file
The absolute path to the MDX file (e.g. home/user/projects/.../file.md
).
url
The browser-ready URL for MDX files under src/pages/
. For example, src/pages/en/about.mdx
will provide a url
of /en/about/
. For MDX files outside of src/pages
, url
will be undefined
.
getHeadings()
Returns: { depth: number; slug: string; text: string }[]
A function that returns an array of all headings (i.e. h1 -> h6
elements) in the MDX file. Each heading’s slug
corresponds to the generated ID for a given heading and can be used for anchor links.
Frontmatter
Astro also supports YAML-based frontmatter out-of-the-box. By default, all variables declared in a frontmatter fence (---
) will be accessible via the frontmatter
export.
For example, we can add a title
and publishDate
to an MDX page or component like so:
---
title: 'My first MDX post'
publishDate: '21 September 2022'
---
# {frontmatter.title}
Now, this title
and publishDate
will be accessible from import
and glob statements via the frontmatter
property. This matches the behavior of plain markdown in Astro as well!
---
// src/pages/index.astro
const posts = await Astro.glob('./*.mdx');
---
{posts.map(post => (
<Fragment>
<h2>{post.frontmatter.title}</h2>
<time>{post.frontmatter.publishDate}</time>
</Fragment>
))}
Inject frontmatter via remark or rehype plugins
You may want to inject frontmatter properties across all of your MDX files. By using a remark or rehype plugin, you can generate these properties based on a file’s contents.
You can append to the data.astro.frontmatter
property from your plugin’s file
argument like so:
// example-remark-plugin.mjs
export function exampleRemarkPlugin() {
// All remark and rehype plugins return a separate function
return function (tree, file) {
file.data.astro.frontmatter.customProperty = 'Generated property';
}
}
After applying this plugin to your MDX integration config:
// astro.config.mjs
import mdx from '@astrojs/mdx';
import { exampleRemarkPlugin } from './example-remark-plugin.mjs';
export default {
integrations: [
mdx({
remarkPlugins: [exampleRemarkPlugin],
}),
],
};
…every MDX file will have customProperty
in its frontmatter! See our Markdown documentation for more usage instructions and a reading time plugin example.
Layouts
Layouts can be applied in the same way as standard Astro Markdown. You can add a layout
to your frontmatter like so:
---
layout: '../layouts/BaseLayout.astro'
title: 'My Blog Post'
---
Then, you can retrieve all other frontmatter properties from your layout via the frontmatter
property, and render your MDX using the default <slot />
:
---
// src/layouts/BaseLayout.astro
const { frontmatter } = Astro.props;
---
<html>
<head>
<title>{frontmatter.title}</title>
</head>
<body>
<h1>{frontmatter.title}</h1>
<!-- Rendered MDX will be passed into the default slot. -->
<slot />
</body>
</html>
Importing layouts manually
You may need to pass information to your layouts that does not (or cannot) exist in your frontmatter. In this case, you can import and use a <Layout />
component like any other component:
---
// src/pages/posts/first-post.mdx
title: 'My first MDX post'
publishDate: '21 September 2022'
---
import BaseLayout from '../layouts/BaseLayout.astro';
function fancyJsHelper() {
return "Try doing that with YAML!";
}
<BaseLayout title={frontmatter.title} fancyJsHelper={fancyJsHelper}>
Welcome to my new Astro blog, using MDX!
</BaseLayout>
Then, your values are available to you through Astro.props
in your layout, and your MDX content will be injected into the page where your <slot />
component is written:
---
// src/layouts/BaseLayout.astro
const { title, fancyJsHelper } = Astro.props;
---
<!-- -->
<h1>{title}</h1>
<slot />
<p>{fancyJsHelper()}</p>
<!-- -->
Custom components
Under the hood, MDX will convert Markdown into HTML components. For example, this blockquote:
> A blockquote with *some* emphasis.
will be converted into this HTML:
<blockquote>
<p>A blockquote with <em>some</em> emphasis.</p>
</blockquote>
But what if you want to specify your own markup for these blockquotes? In the above example, you could create a custom <Blockquote />
component (in any language) that either has a <slot />
component or accepts a children
prop.
<blockquote class="bg-blue-50 p-4">
<span class="text-4xl text-blue-600 mb-2">“</span>
<slot />
</blockquote>
Then in the MDX file you import the component and export it to the components
export.
import Blockquote from '../components/Blockquote.astro';
export const components = { blockquote: Blockquote };
Now, writing the standard Markdown blockquote syntax (>
) will use your custom <Blockquote />
component instead. No need to use a component in Markdown, or write a remark/rehype plugin! Visit the MDX website for a full list of HTML elements that can be overwritten as custom components.
Custom components with imported mdx
When rendering imported MDX content, custom components can also be passed via the components
prop:
---
import Content from '../content.mdx';
import Heading from '../Heading.astro';
---
<Content components={{ h1: Heading }} />
Syntax highlighting
The MDX integration respects your project's markdown.syntaxHighlight
configuration.
We will highlight your code blocks with Shiki by default. You can customize this highlighter using the markdown.shikiConfig
option in your astro.config
. For example, you can apply a different built-in theme like so:
// astro.config.mjs
export default {
markdown: {
shikiConfig: {
theme: 'dracula',
},
},
integrations: [mdx()],
}
Visit our Shiki configuration docs for more on using Shiki with Astro.
Switch to Prism
You can also use the Prism syntax highlighter by setting markdown.syntaxHighlight
to 'prism'
in your astro.config
like so:
// astro.config.mjs
export default {
markdown: {
syntaxHighlight: 'prism',
},
integrations: [mdx()],
}
This applies a minimal Prism renderer with added support for astro
code blocks. Visit our "Prism configuration" docs for more on using Prism with Astro.
Switch to a custom syntax highlighter
You may want to apply your own syntax highlighter too. If your highlighter offers a remark or rehype plugin, you can flip off our syntax highlighting by setting markdown.syntaxHighlight: false
and wiring up your plugin. For example, say you want to apply Shiki Twoslash's remark plugin:
// astro.config.mjs
import shikiTwoslash from 'remark-shiki-twoslash';
export default {
markdown: {
syntaxHighlight: false,
},
integrations: [mdx({
remarkPlugins: [shikiTwoslash, { /* Shiki Twoslash config */ }],
})],
Configuration
remarkPlugins
Remark plugins allow you to extend your Markdown with new capabilities. This includes auto-generating a table of contents, applying accessible emoji labels, and more. We encourage you to browse awesome-remark for a full curated list!
This example applies the remark-toc
plugin to .mdx
files. To customize plugin inheritance from your Markdown config or Astro's defaults, see the extendPlugins
option.
// astro.config.mjs
import remarkToc from 'remark-toc';
export default {
integrations: [mdx({
remarkPlugins: [remarkToc],
})],
}
rehypePlugins
Rehype plugins allow you to transform the HTML that your Markdown generates. We encourage you to browse awesome-rehype for a full curated list of plugins!
We apply our own (non-removable) collect-headings
plugin. This applies IDs to all headings (i.e. h1 -> h6
) in your MDX files to link to headings via anchor tags.
This example applies the rehype-minify
plugin to .mdx
files. To customize plugin inheritance from your Markdown config or Astro's defaults, see the extendPlugins
option.
// astro.config.mjs
import rehypeMinifyHtml from 'rehype-minify';
export default {
integrations: [mdx({
rehypePlugins: [rehypeMinifyHtml],
})],
}
extendPlugins
Type: 'markdown' | 'astroDefaults' | false
Default: 'markdown'
markdown
(default)
By default, Astro inherits all remark and rehype plugins from the markdown
option in your Astro config. This also respects the markdown.extendDefaultPlugins
option to extend Astro's defaults. Any additional plugins you apply in your MDX config will be applied after your configured Markdown plugins.
This example applies remark-toc
to Markdown and MDX, and rehype-minify
to MDX alone:
// astro.config.mjs
import remarkToc from 'remark-toc';
import rehypeMinify from 'rehype-minify';
export default {
markdown: {
// Applied to .md and .mdx files
remarkPlugins: [remarkToc],
},
integrations: [mdx({
// Applied to .mdx files only
rehypePlugins: [rehypeMinify],
})],
}
astroDefaults
You may only want to extend Astro's default plugins without inheriting your Markdown config. This example will apply the default GitHub-Flavored Markdown and Smartypants plugins alongside remark-toc
:
// astro.config.mjs
import remarkToc from 'remark-toc';
export default {
markdown: {
remarkPlugins: [/** ignored */]
},
integrations: [mdx({
remarkPlugins: [remarkToc],
// Astro defaults applied
extendPlugins: 'astroDefaults',
})],
}
false
If you don't want to extend any plugins, set extendPlugins
to false
:
// astro.config.mjs
import remarkToc from 'remark-toc';
export default {
integrations: [mdx({
remarkPlugins: [remarkToc],
// Astro defaults not applied
extendPlugins: false,
})],
}
Examples
- The Astro MDX example shows how to use MDX files in your Astro project.
Troubleshooting
For help, check out the #support-threads
channel on Discord. Our friendly Support Squad members are here to help!
You can also check our Astro Integration Documentation for more on integrations.
Contributing
This package is maintained by Astro's Core team. You're welcome to submit an issue or PR!
Changelog
See CHANGELOG.md for a history of changes to this integration.