VS Code Markdown Preview Enhanced: Extend Parser for syntax highlight of Jekyll/Liquid code blocks

parser.js

// For Markdown Preview Enhanced
// In VS Code, press Cmd+shift+p, select Markdown Preview Enhanced
// file path (MacOS): ~/.mume/parser.js
// Convert {% highlight lang option %} [code blocks] {% endhighlight %}
// to ```julia [code blocks] ```

module.exports = {
  onWillParseMarkdown: function(markdown) {
    return new Promise((resolve, reject)=> {
      markdown = markdown.replace(
        /{%\s*highlight\s*([\w]*)\s*([\w]*)\s*%}\n([\w\W]+?)\n{%\s*endhighlight\s*%}/g,
        (whole, lang, opt, content) => `
  \`\`\`${lang}
  ${content}
  \`\`\`
        `,
      );
      return resolve(markdown)
    })
  },
  onDidParseMarkdown: function(html) {
    return new Promise((resolve, reject)=> {
      return resolve(html)
    })
  }
}