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https://github.com/michael-klein/htmdx
HTMDX: Lightweight runtime for mdx-like markdown
https://github.com/michael-klein/htmdx
javascript markdown mdx preact react
Last synced: 6 days ago
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HTMDX: Lightweight runtime for mdx-like markdown
- Host: GitHub
- URL: https://github.com/michael-klein/htmdx
- Owner: michael-klein
- License: mit
- Created: 2019-12-21T18:24:56.000Z (about 5 years ago)
- Default Branch: master
- Last Pushed: 2023-01-07T13:04:12.000Z (almost 2 years ago)
- Last Synced: 2024-12-09T05:11:39.659Z (16 days ago)
- Topics: javascript, markdown, mdx, preact, react
- Language: TypeScript
- Homepage:
- Size: 3.95 MB
- Stars: 88
- Watchers: 4
- Forks: 3
- Open Issues: 24
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
- awesome-list - htmdx - like markdown | michael-klein | 78 | (TypeScript)
README
# HTMDX: Lightweight runtime for mdx-like markdown
[
](https://www.npmjs.com/package/htmdx)
This library is an attempt to provide a runtime to compile [mdx](https://github.com/mdx-js/mdx)-like markdown files (with the goal to support full JSX inside of markdown) using [htm](https://github.com/developit/htm) + [marked](https://github.com/markedjs/marked) that is much smaller in file-size as opposed to the official runtime (which we are not encouraged to use on actual websites).
[Here is a simple example playground using HTMDX](https://michael-klein.github.io/htmdx/example/dist/index.html)
## Usage
Simple example:
```javascript
import * as React from 'react';
import * as ReactDOM from 'react-dom';
import { htmdx } from 'htmdx';
import * as Prism from 'prismjs';
function SomeComponent() {
return 'something';
}
const markDownWithJSX = `
# Hello World
Mardown will be interpreted as tagged templates from htm:
{this.setState({inputValue:e.target.value});console.log(e.target.value)}}/>
We're also using the setState method and state property passed into using the thisValue options (see below)
With the transformJSXToHTM option enabled, you may also use normal brackets:
this.setState({inputValue:e.target.value})}/>
Here's some code with code highlighting:
\`\`\`
function SomeComponent() {
return "Some component ouput.";
}
\`\`\`
`;
function App() {
const [state, setState] = React.useState({});
return htmdx(
markDownWithJSX,
React.createElement, // provide a h function. You can also use HTMDX with preact or any other library that supports the format
{
components: { SomeComponent }, // provide components that will be available in markdown files,
configureMarked: (
marked // configure the underlying marked parser, e.x.: to add code highlighting:
) =>
marked.setOptions({
highlight: function(code) {
return Prism.highlight(
code,
Prism.languages.javascript,
'javascript'
).replace(/\n/g, '
');
},
}),
transformClassToClassname: true, // transforms class="some-class" to className="some-class" (default: true)
transformJSXToHTM: true, // transforms some JSX to htm template literal syntax (such as value={} to value=${}) (default: true)
thisValue: {
// the this value passed to the compiled JSX
state,
setState: newState => setState(Object.assign({}, state, newState)),
},
}
);
}
ReactDOM.render(React.createElement(App), document.getElementById('root'));
```
[](https://codesandbox.io/s/romantic-liskov-m4x35?fontsize=14&hidenavigation=1&theme=dark)
### Pluggable MDX transforms
You can supply MDX transforms, which will be applied to mdx strings before anything else:
```javascript
htmdx('# Hello World', React.createElement, {
mdxTransforms: [m => m.replace('# Hello World', '# foo')], // will replace # Hello world with # foo
})
```
### Pluggable JSX transforms
You can supply JSX transforms which allow you to apply further transforms before the JSX pragma runs, like so:
```javascript
htmdx('# Hello World', React.createElement, {
jsxTransforms: [
(props, type, children) => {
if (children && children[0] === 'Hello World') {
children[0] = 'Foo'; // this will output
Foo
instead of Hello World
now!
}
return [props, type, children];
},
],
})
```
### Overwriting normal generated html elements with components:
You can also provide components for basic html elements that are generated by the markdown compiler:
```javascript
htmdx("# Hello World", React.createElement, {
components: {
TestComponent,
h1: props =>
html`
${props.children}
`,
}
})
```