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rehype-prism

v2.3.2

Published

The unified plugin used to highlight code block in html with Prism

Downloads

13,678

Readme

version downloads dependencies license Codecov

The unified plugin used to highlight code block in html with Prism.

Usage

This package is ESM only: Node 12+ and unified 10 is needed to use it and it must be imported instead of required.

import { unified } from 'unified'
import rehype from 'rehype'
import remarkParse from 'remark-parse'
import remarkRehype from 'remark-rehype'
import rehypePrism from 'rehype-prism'
import rehypeStringify from 'rehype-stringify'

// you have to load css manual
import 'prismjs/themes/prism-coy.css'
import 'prismjs/plugins/line-numbers/prism-line-numbers.css'

// load languages manual
// import 'prismjs/components/prism-{language}'
import 'prismjs/components/prism-go'
import 'prismjs/components/prism-java'
import 'prismjs/components/prism-python'

// parse markdown to html
unified()
  .use(remarkParse)
  .use(remarkRehype)
  // it should be after rehype
  .use(rehypePrism, { plugins: ['line-numbers'] })
  .use(rehypeStringify)
  .parse(/* markdown string */)
// .processSync(/* markdown string */)

// parse code block in html string
rehype()
  .use(rehypePrism)
  .use(rehypeStringify)
  .parse(/* html string */)
// .processSync(/* html string */)

Server Side Render

PrismJS will auto highlight all code at pre code after browser document loaded.

Disabled prism autoHighlight before import 'rehype-prism'. there are two way to do this:

  • set the window.Prism = { manual: true }

  • use the attribute data-manual on the <script> element you used for prism.

    <script src="prism.js" data-manual></script>

Some plugins will not work. Because it's only work in browser.

Load Plugins

The names to use can be found here.

Plugins Reimplemented By rehype-prism

The table list plugins that cannot running on the server side. Therefor it has been re-implemented by rehype-prism.

| Plugin Name | |:------------------| | line-numbers | | toolbar | | copy-to-clipboard |

I haven't tested all prism plugins. If there are another plugins not work, submit issue on github.

Load More Languages

  • Use babel-plugin-prismjs.(Recommend)
  • Use loadLanguages() provided by prismjs.(don't use loadLanguages() with Webpack or another bundler)

Load Themes

  • If you use babel-plugin-prismjs. import 'prismjs' will auto load the theme setted in babel-plugin-prismjs config.
  • Import theme css manual. e.g. import 'prismjs/themes/prism-coy.css'

Contributing & Development

If there is any doubt, it is very welcome to discuss the issue together.