src/language-markdown/parser-markdown.js/htmlToJsx
function htmlToJsx() {
  return (ast) =>
    mapAst(ast, (node, _index, [parent]) => {
      if (
        node.type !== "html" ||
        node.value.match(mdx.COMMENT_REGEX) ||
        INLINE_NODE_WRAPPER_TYPES.includes(parent.type)
      ) {
        return node;
      }

      return { ...node, type: "jsx" };
    });
}