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Custom components and data

Use your React components and shared data in MDX

Make your React components and data available to every MDX page.

Create a component and some data:

docs/authoring/Example.tsx

'use client'

import { useState } from 'react'

export function Example({ initialCount }: { initialCount: number }) {
  const [count, setCount] = useState(initialCount)
  return (
    <button className="rounded border px-3 py-2" onClick={() => setCount(count + 1)}>
      Count: {count}
    </button>
  )
}

docs/authoring/Example.json

{
  "initialCount": 3,
  "spacing": [
    { "name": "compact", "value": 4 },
    { "name": "comfortable", "value": 12 }
  ]
}

docs.config.ts

import type { DocsConfig } from '@pmndrs/docs/src/config'
import { Example } from './docs/authoring/Example'
import example from './docs/authoring/Example.json'

export default {
  components: { Example },
  scope: { example },
} satisfies DocsConfig

Then use them directly in MDX:

<Example initialCount={example.initialCount} />

result:

Click the counter to increment it.

Server components

Components can also load data asynchronously on the server, without 'use client':

docs/authoring/Example.server.tsx

export async function ExampleTable() {
  const { default: example } = await import('./Example.json')
  return (
    <table>
      <thead>
        <tr>
          <th>Spacing</th>
          <th>Pixels</th>
        </tr>
      </thead>
      <tbody>
        {example.spacing.map(({ name, value }) => (
          <tr key={name}>
            <th scope="row">{name}</th>
            <td>{value}</td>
          </tr>
        ))}
      </tbody>
    </table>
  )
}

Import ExampleTable into docs.config.ts and add it to components, then use it in MDX:

<ExampleTable />

result:

Spacing	Pixels
compact	4
comfortable	12

Rendering

Registered components override built-in components with the same name. Keep the configuration on the server. Add 'use client' to interactive component modules and pass serializable props.

Website builds support CSS imports. For Tailwind classes in external components, include their files in your own Tailwind stylesheet's sources and import that stylesheet from the configuration.

HTML fragments render only the initial state, without hydration or stylesheets: the counter above displays its starting value but does not respond to clicks.

See Configuration for config paths and CLI options, and GitHub Actions for CI setup.

docs/authoring/custom-components.mdx

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Summary

Rendering