🍿 Minor Changes

• #10538 ccafa8d230f65c9302421a0ce0a0adc5824bfd55 Thanks @604qgc! - Adds a data-language attribute on the rendered pre elements to expose the highlighted syntax language.

  For example, the following Markdown code block will expose data-language="python":

  \```python
  def func():
      print('Hello Astro!')
  \```

  This allows retrieving the language in a rehype plugin from node.properties.dataLanguage by accessing the <pre> element using { tagName: "pre" }:

  import { visit } from "unist-util-visit";
  export default function myRehypePre() {
    return (tree) => {
      visit(tree, { tagName: "pre" }, (node) => {
        const lang = node.properties.dataLanguage;
        [...]
      });
    };
  }

  Note: The <pre> element is not exposed when using Astro’s <Code /> component which outputs flattened HTML.

  The data-language attribute may also be used in css rules:

  pre::before {
    content: attr(data-language);
  }
  
  pre[data-language='javascript'] {
    font-size: 2rem;
  }

🐞 Patch Changes

• Updated dependencies [683d51a5eecafbbfbfed3910a3f1fbf0b3531b99]:
  • @astrojs/prism@3.1.0