Webpack loader for MDX

Usage no npm install needed!

<script type="module">
  import mdxJsLoader from 'https://cdn.skypack.dev/@mdx-js/loader';



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webpack loader for MDX.


What is this?

This package is a webpack loader to support MDX.

When should I use this?

This integration is useful if you’re using webpack (or another tool that uses webpack, such as Next.js).

This integration can be combined with the Babel loader to support nonstandard JSX runtimes (such as Vue) or compile modern JavaScript features to ones your users support.

If you want to evaluate MDX code then the lower-level compiler (@mdx-js/mdx) can be used manually.


This package is ESM only: Node 12+ is needed to use it and it must be imported instead of required.


npm install @mdx-js/loader


yarn add @mdx-js/loader


Add something along these lines to your webpack.config.js:

module.exports = {
  module: {
    // …
    rules: [
      // …
        test: /\.mdx?$/,
        use: [
            loader: '@mdx-js/loader',
            /** @type {import('@mdx-js/loader').Options} */
            options: {}

See also ¶ Create React App (CRA), ¶ Next.js, and ¶ Vue CLI, if you’re using webpack through them, for more info.


This package exports a webpack plugin as the default export.

Source maps are supported based on how you configure webpack. You do not need to pass options.SourceMapGenerator.


options are the same as compile from @mdx-js/mdx.

Note: Babel

If you use modern JavaScript features you might want to use Babel through babel-loader to compile to code that works:

// …
use: [
  // Note that Webpack runs right-to-left: `@mdx-js/loader` is used first, then
  // `babel-loader`.
  {loader: 'babel-loader', options: {}},
    loader: '@mdx-js/loader',
    /** @type {import('@mdx-js/loader').Options} */
    options: {},
// …


This package is fully typed with TypeScript. See § Types on our website for information.

An Options type is exported, which represents acceptable configuration.


See § Security on our website for information.


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.


MIT © Compositor and Vercel