src/language-markdown/parser-markdown.js/parse
function parse(text /*, parsers, opts*/) {
  const processor = unified()
    .use(remarkParse, { footnotes: true, commonmark: true })
    .use(remarkFrontmatter, ["yaml", "toml"])
    .use(restoreUnescapedCharacter(text))
    .use(mergeContinuousTexts)
    .use(transformInlineCode)
    .use(splitText);
  return processor.runSync(processor.parse(text));
}