#Markdown & MDX

Rspress supports not only Markdown but also MDX, a powerful way to develop content.

#Markdown

MDX is a superset of Markdown, which means you can write Markdown files as usual. For example:

# Hello world

#Use component

When you want to use React components in Markdown files, you should name your files with .mdx extension. For example:

// docs/index.mdx
import { CustomComponent } from './custom';

# Hello world

<CustomComponent />

#Front matter

You can add Front Matter at the beginning of your Markdown file, which is a YAML-formatted object that defines some metadata. For example:

---
title: Hello world
---

Note: By default, Rspress uses h1 headings as html headings.

You can also access properties defined in Front Matter in the body, for example:

---
title: Hello world
---

# {frontmatter.title}

The previously defined properties will be passed to the component as frontmatter properties. So the final output will be:

<h1>Hello world</h1>

#Custom container

You can use the ::: syntax to create custom containers and support custom titles. For example:

Input:

:::tip
This is a `block` of type `tip`
:::

:::info
This is a `block` of type `info`
:::

:::warning
This is a `block` of type `warning`
:::

:::danger
This is a `block` of type `danger`
:::

::: details
This is a `block` of type `details`
:::

:::tip Custom Title
This is a `block` of `Custom Title`
:::

:::tip{title="Custom Title"}
This is a `block` of `Custom Title`
:::

Output:

#Code block

#Basic usage

You can use the ``` syntax to create code blocks and support custom titles. For example:

Input:

```js
console.log('Hello World');
```

```js title="hello.js"
console.log('Hello World');
```

Output:

console.log('Hello World');

console.log('Hello World');

#Show line numbers

If you want to display line numbers, you can enable the showLineNumbers option in the config file:

export default {
  // ...
  markdown: {
    showLineNumbers: true,
  },
};

#Wrap code

If you want to wrap long code line by default, you can enable the defaultWrapCode option in the config file:

export default {
  // ...
  markdown: {
    defaultWrapCode: true,
  },
};

#Line highlighting

You can also apply line highlighting and code block title at the same time, for example:

Input:

```js title="hello.js"
console.log('Hello World'); // [\!code highlight]

// [\!code highlight:3]
const a = 1;

console.log(a);

const b = 2;

console.log(b);
```

Output:

console.log('Hello World'); // [!code highlight]

// [!code highlight:3]
const a = 1;

console.log(a);

const b = 2;

console.log(b);

#Rustify MDX compiler

You can enable Rustify MDX compiler by following config: