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gatsby-plugin-mdx-code-demo

v2.0.0

Published

Gatsby plugin to generate code demos from JavaScript files

Downloads

26

Readme

gatsby-plugin-mdx-code-demo

Create inline code demos with MDX. This plugin is heavily inspired by material-ui's wonderful documentation. It allows you to write demos like theirs.

Breaking changes in v2. The usage is radically simplified compared to v0 and v1, but they are totally uncompatible.

Example usage

To enable a CodeDemo just add the codeDemo metadata after the language in your MDX code block. The React component you want to demo needs to be default exported.

---
title: Buttons Documentation
---

## Buttons

Here is an example Button in action:

```jsx codeDemo
import React from 'react';
import Button from '@material-ui/core/Button';

function OutlinedButtons() {
  return (
    <>
      <Button variant="outlined">Default</Button>
      <Button variant="outlined" color="primary">
        Primary
      </Button>
      <Button variant="outlined" color="secondary">
        Secondary
      </Button>
      <Button variant="outlined" disabled>
        Disabled
      </Button>
      <Button variant="outlined" href="#outlined-buttons">
        Link
      </Button>
    </>
  );
}

// Demos must be default exported
export default OutlinedButtons;
```

Install

npm install --save gatsby-plugin-mdx gatsby-plugin-mdx-code-demo

Setup

  1. Add gastby-plugin-mdx-code-demo to your gastby-config.js file
// In your gatsby-config.js
plugins: [
  {
    resolve: 'gatsby-plugin-mdx',
    options: {
      gatsbyRemarkPlugins: ['gatsby-plugin-mdx-code-demo'],
    },
  },
];
  1. Create a CodeDemo component. To highlight the code block you can use prism-react-renderer.
// src/components/CodeDemo.js
import React from 'react';

// This is a container component to render our demos and their code
export function CodeDemo(props) {
  const { code, children } = props;

  return (
    <div>
      <pre>{code}</pre> {/* code block as a string */}
      <div>
        {children} {/* the react rendered demo */}
      </div>
    </div>
  );
}
  1. Make CodeDemo available through your MDXProvider
// src/components/Layout.js
import React from 'react';
import { MDXProvider } from '@mdx-js/react';
import { CodeDemo } from './CodeDemo';

function Layout(props) {
  const mdxComponents = {
    h1: (props) => <h1 {...props} />,
    // more components
    CodeDemo: (props) => <CodeDemo {...props} />,
  };

  return <MDXProvider components={mdxComponents}>{props.children}</MDXProvider>;
}

export default Layout;

FAQ?

  1. How does it differ from react-live?
    react-live will let you live edit your views, but it brings buble as a dependency. All of gatsby-plugin-mdx-code-demo's magic happens at build time, so there is no dependency included. If you don't expect your users to edit your demos in real time react-live is probably overkill.

  2. How does it differ from react-view?
    The same as above applies to react-view, except react-view brings in babel as a dependency. Also, react-view doesn't currently work with Gatsby.