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README.md	Updated according to new configuration (#5478 )	2023-01-26 13:03:00 -06:00
tsconfig.json

README.md

@astrojs/mdx 📝

This Astro integration enables the usage of MDX components and allows you to create pages as .mdx files.

Why MDX?
Installation
Usage
Configuration
Examples
Troubleshooting
Contributing
Changelog

Why MDX?

MDX allows you to use variables, JSX expressions and components within Markdown content in Astro. If you have existing content authored in MDX, this integration allows you to bring those files to your Astro project.

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()],
});

Editor Integration

VS Code supports Markdown by default. However, for MDX editor support, you may wish to add the following setting in your VSCode config. This ensures authoring MDX files provides a Markdown-like editor experience.

"files.associations": {
    "*.mdx": "markdown"
}

Usage

With the Astro MDX integration, you can add MDX pages to your project by adding .mdx files within your src/pages/ directory. You can also import .mdx files into .astro files.

Astro's MDX integration adds extra features to standard MDX, including Markdown-style frontmatter. This allows you to use most of Astro's built-in Markdown features like a special frontmatter layout property and a property for marking a page as a draft.

See how MDX works in Astro with examples in our Markdown & MDX guide.

Visit the MDX docs to learn about using standard MDX features.

Configuration

Once the MDX integration is installed, no configuration is necessary to use .mdx files in your Astro project.

You can configure how your MDX is rendered with the following options:

Options inherited from Markdown config
extendMarkdownConfig
recmaPlugins

Options inherited from Markdown config

All markdown configuration options except drafts can be configured separately in the MDX integration. This includes remark and rehype plugins, syntax highlighting, and more. Options will default to those in your Markdown config (see the extendMarkdownConfig option to modify this).

:::note There is no separate MDX configuration for including pages marked as draft in the build. This Markdown setting will be respected by both Markdown and MDX files and cannot be overridden for MDX files specifically. :::

astro.config.mjs

import { defineConfig } from 'astro/config';
import mdx from '@astrojs/mdx';
import remarkToc from 'remark-toc';
import rehypeMinifyHtml from 'rehype-minify-html';

export default defineConfig({
  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 />. See layout props for a complete list of props available.

---
const { frontmatter, url } = Astro.props;
---
<html>
  <head>
    <meta rel="canonical" href={new URL(url, Astro.site).pathname}>
    <title>{frontmatter.title}</title>
  </head>
  <body>
    <h1>{frontmatter.title}</h1>
    <!-- Rendered MDX will be passed into the default slot. -->
    <slot />
  </body>
</html>

You can set a layout’s Props type with the MDXLayoutProps helper.

:::note MDXLayoutProps is the same as the MarkdownLayoutProps utility type with rawContent() and compiledContent() removed (since these are not available for .mdx files). Feel free to use MarkdownLayoutProps instead when sharing a layout across .md and .mdx files. :::

📚 See the Markdown Options reference for a complete list of options.

`extendMarkdownConfig`

Type: boolean
Default: true

MDX will extend your project's existing Markdown configuration by default. To override individual options, you can specify their equivalent in your MDX configuration.

For example, say you need to disable GitHub-Flavored Markdown and apply a different set of remark plugins for MDX files. You can apply these options like so, with extendMarkdownConfig enabled by default:

<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.

---
const props = Astro.props;
---

<blockquote {...props} 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 be passed via the components prop.

Note: An MDX file's exported components will not be used unless you manually import and pass them via the components property. See the example below:

---
import { Content, components } from '../content.mdx';
import Heading from '../Heading.astro';
---

<Content components={{...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

import { defineConfig } from 'astro/config';
import mdx from '@astrojs/mdx';

export default defineConfig({
  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

import { defineConfig } from 'astro/config';
import mdx from '@astrojs/mdx';

export default defineConfig({
  markdown: {
    syntaxHighlight: 'prism',
    remarkPlugins: [remarkPlugin1],
    gfm: true,
  },
  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 { defineConfig } from 'astro/config';
import mdx from '@astrojs/mdx';
import shikiTwoslash from 'remark-shiki-twoslash';

export default defineConfig({
  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 { defineConfig } from 'astro/config';
import mdx from '@astrojs/mdx';
import remarkToc from 'remark-toc';

export default defineConfig({
  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 { defineConfig } from 'astro/config';
import mdx from '@astrojs/mdx';
import rehypeMinifyHtml from 'rehype-minify';

export default defineConfig({
  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 { defineConfig } from 'astro/config';
import mdx from '@astrojs/mdx';
import remarkToc from 'remark-toc';
import rehypeMinify from 'rehype-minify';

export default defineConfig({
  markdown: {
    // Applied to .md and .mdx files
    remarkPlugins: [remarkToc],
  },
  integrations: [mdx({
    // Applied to .mdx files only
    rehypePlugins: [rehypeMinify],
  })],
});

You may also need to disable markdown config extension in MDX. For this, set extendMarkdownConfig to false:

astro.config.mjs

import { defineConfig } from 'astro/config';
import mdx from '@astrojs/mdx';
import remarkToc from 'remark-toc';

export default defineConfig({
  markdown: {
    remarkPlugins: [remarkPlugin1],
  },
  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 { defineConfig } from 'astro/config';
import mdx from '@astrojs/mdx';
import remarkToc from 'remark-toc';

export default defineConfig({
  integrations: [mdx({
    remarkPlugins: [remarkToc],
    // Astro defaults not applied
    extendPlugins: false,
  })],
});

`recmaPlugins`

These are plugins that modify the output estree directly. This is useful for modifying or injecting JavaScript variables in your MDX files.

We suggest using AST Explorer to play with estree outputs, and trying estree-util-visit for searching across JavaScript nodes.

remarkRehype

Markdown content is transformed into HTML through remark-rehype which has a number of options.

You can use remark-rehype options in your MDX integration config file like so:

astro.config.mjs

import { defineConfig } from 'astro/config';
import mdx from '@astrojs/mdx';

export default defineConfig({
  integrations: [mdx({
    remarkRehype: {
      footnoteLabel: 'Catatan kaki',
      footnoteBackLabel: 'Kembali ke konten',
    },
  })],
});

This inherits the configuration of markdown.remarkRehype. This behavior can be changed by configuring extendPlugins.

Examples

The Astro MDX starter template shows how to use MDX files in your Astro project.

Troubleshooting

For help, check out the #support 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.

README.md Unescape Escape

@astrojs/mdx 📝

Why MDX?

Installation

Quick Install

Manual Install

Editor Integration

Usage

Configuration

Options inherited from Markdown config

Layouts

extendMarkdownConfig

Custom components with imported mdx

Syntax highlighting

Switch to Prism

Switch to a custom syntax highlighter

Configuration

remarkPlugins

rehypePlugins

extendPlugins

markdown (default)

false

recmaPlugins

remarkRehype

Examples

Troubleshooting

Contributing

Changelog

README.md

`extendMarkdownConfig`

Custom components with imported `mdx`

`markdown` (default)

`false`

`recmaPlugins`