mdx/packages/preact

@mdx-js/preact

Preact context for MDX.

Contents

• What is this?
• When should I use this?
• Install
• Use
• API
  • MDXProvider(props?)
  • useMDXComponents(components?)
  • MergeComponents
  • Props
• Types
• Compatibility
• Security
• Contribute
• License

What is this?

This package is a context based components provider for combining Preact with MDX.

When should I use this?

This package is not needed for MDX to work with Preact. See ¶ MDX provider in § Using MDX for when and how to use an MDX provider.

Install

This package is ESM only. In Node.js (version 16+), install with npm:

npm install @mdx-js/preact

In Deno with esm.sh:

import {MDXProvider} from 'https://esm.sh/@mdx-js/preact@2'

In browsers with esm.sh:

<script type="module">
  import {MDXProvider} from 'https://esm.sh/@mdx-js/preact@2?bundle'
</script>

Use

import {MDXProvider} from '@mdx-js/preact'
import Post from './post.mdx'
// ^-- Assumes an integration is used to compile MDX to JS, such as
// `@mdx-js/esbuild`, `@mdx-js/loader`, `@mdx-js/node-loader`, or
// `@mdx-js/rollup`, and that it is configured with
// `options.providerImportSource: '@mdx-js/preact'`.

/** @type {import('mdx/types.js').MDXComponents} */
const components = {
  em(props) {
    return <i {...props} />
  }
}

console.log(
  <MDXProvider components={components}>
    <Post />
  </MDXProvider>
)

👉 Note: you don’t have to use MDXProvider and can pass components directly:

-<MDXProvider components={components}>
-  <Post />
-</MDXProvider>
+<Post components={components} />

See ¶ Preact in § Getting started for how to get started with MDX and Preact. See ¶ MDX provider in § Using MDX for how to use an MDX provider.

API

This package exports the identifiers MDXProvider and useMDXComponents. There is no default export.

MDXProvider(props?)

Provider for MDX context.

Parameters

• props (Props) — configuration

Returns

Element (JSX.Element).

useMDXComponents(components?)

Get current components from the MDX Context.

Parameters

• components (MDXComponents from mdx/types.js or MergeComponents, optional) — additional components to use or a function that creates them

Returns

Current components (MDXComponents from mdx/types.js).

MergeComponents

Custom merge function (TypeScript type).

Parameters

• components (MDXComponents from mdx/types.js) — current components from the context

Returns

Additional components (MDXComponents from mdx/types.js).

Props

Configuration for MDXProvider (TypeScript type).

Fields

• children (ComponentChildren from preact, optional) — children
• components (MDXComponents from mdx/types.js or MergeComponents, optional) — additional components to use or a function that creates them
• disableParentContext (boolean, default: false) — turn off outer component context

Types

This package is fully typed with TypeScript. It exports the additional types MergeComponents and Props.

For types to work, make sure the TypeScript JSX namespace is typed. This is done by installing and using the types of your framework, as in preact.

Compatibility

Projects maintained by the unified collective are compatible with maintained versions of Node.js.

When we cut a new major release, we drop support for unmaintained versions of Node. This means we try to keep the current release line, @mdx-js/preact@^2, compatible with Node.js 12.

Security

See § Security on our website for information.

Contribute

See § Contribute on our website for ways to get started. See § Support for ways to get help.

This project has a code of conduct. By interacting with this repository, organization, or community you agree to abide by its terms.

License

MIT © Compositor and Vercel