code: function _Markdown_formatOptions(options) {
      function toHighlight(code, lang) {
        if (!lang && elm$core$Maybe$isJust(options.defaultHighlighting)) {
          lang = options.defaultHighlighting.a;
        }
  
        if (
          typeof hljs !== "undefined" &&
          lang &&
          hljs.listLanguages().indexOf(lang) >= 0
        ) {
          return hljs.highlight(lang, code, true).value;
        }
  
        return code;
      }
  
      var gfm = options.githubFlavored.a;
  
      return {
        highlight: toHighlight,
        gfm: gfm,
        tables: gfm && gfm.tables,
        breaks: gfm && gfm.breaks,
        sanitize: options.sanitize,
        smartypants: options.smartypants
      };
    }
docs: FORMAT OPTIONS FOR MARKED IMPLEMENTATION