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@mdx-js/node-loader

v3.1.0

Published

Node.js loader for MDX

Downloads

3,073

Readme

@mdx-js/node-loader

Build Coverage Downloads Sponsors Backers Chat

Node.js hooks (also knows as loaders) for MDX.

Contents

What is this?

This package contains Node.js hooks to add support for importing MDX files. Node Customization Hooks are currently a release candidate.

When should I use this?

This integration is useful if you’re using Node and want to import MDX files from the file system.

If you’re using a bundler (webpack, Rollup, esbuild), or a site builder (Next.js) or build system (Vite) which comes with a bundler, you can instead another integration: see § Integrations.

Install

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

npm install @mdx-js/node-loader

Use

Say we have an MDX document, example.mdx:

export function Thing() {
  return <>World!</>
}

# Hello, <Thing />

…and our module example.js looks as follows:

import {renderToStaticMarkup} from 'react-dom/server'
import React from 'react'
import Content from './example.mdx'

console.log(renderToStaticMarkup(React.createElement(Content)))

…then running with:

node --loader=@mdx-js/node-loader example.js

…yields:

<h1>Hello, World!</h1>

Note: if you use Node 18 and lower, then you can ignore the following warning:

(node:20718) ExperimentalWarning: Custom ESM Loaders is an experimental feature and might change at any > time
(Use `node --trace-warnings ...` to show where the warning was created)

Note: if you use Node 20 and higher, then you get the following warning:

(node:20908) ExperimentalWarning: `--experimental-loader` may be removed in the future; instead use > `register()`:
--import 'data:text/javascript,import { register } from "node:module"; import { pathToFileURL } from > "node:url"; register("%40mdx-js/node-loader", pathToFileURL("./"));'

You can solve that by adding a register.js file:

import {register} from 'node:module'

register('@mdx-js/node-loader', import.meta.url)

…and running node --import ./register.js example.js instead.

API

This package export the identifiers createLoader and load. There is no default export.

createLoader(options?)

Create Node.js hooks to handle markdown and MDX.

Parameters
  • options (Options, optional) — configuration
Returns

Node.js hooks ({load}).

load

Load file: URLs to MD(X) files.

See load in Node.js docs for more info.

Options

Configuration (TypeScript type).

Options are the same as CompileOptions from @mdx-js/mdx exception that the development option is supported based on whether you run Node with --conditions development. You cannot pass it manually.

Types

This package is fully typed with TypeScript. It exports the additional type Options. See § Types on our website for information.

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/node-loader@^3, compatible with Node.js 16.

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 © Titus Wormer