How to use the marked.defaults function in marked

describe('marked', () => {
    const marked = require('marked');

    const getCleanMarkup = markeup => marked(markeup).replace(/\r\n|\r|\n/g, ''); // remove new lines charactes

    const originalOptions = { ...marked.defaults };
    afterEach(() => {
      marked.setOptions(originalOptions);
    });

    // This functionality was broken by initial version of markedjsOverrides.js. So put tests here
    // to avoid this in future.
    it('Table is rendered', () => {
      const inputString = `| a | b | c | d | e |
      |---|---|---|---|---|
      | 1 | 2 | 3 | 4 | 5 |`;
      const html = '<table><thead><tr><th>a</th><th>b</th><th>c</th><th>d</th><th>e</th></tr></thead><tbody><tr><td>1</td><td>2</td><td>3</td><td>4</td><td>5</td></tr></tbody></table>';
      expect(getCleanMarkup(inputString)).to.be.equal(html);
    });

    const listOptionTests = isSmartLists =&gt; {
      // This functionality was broken by initial version of markedjsOverrides.js. So put tests here

.then(content => {
        /* parsing tokens and put tokens into each page */
        markedopt = merge({} , marked.defaults , { renderer: renderer
                                                 , promise: true});

        var tokens = marked.Lexer.lex(content, markedopt);
        var pageTokens = [];
        tokens.forEach(token => {
        if (pageTokens.length === 0) {
          pageTokens.push([token]);
        } else if (token.type === 'heading' && token.depth === 1) {
          pageTokens.push([token]);
        } else {
          pageTokens[pageTokens.length-1].push(token);
        }
      });
      pageTokens.forEach(toks => {
        toks.links = tokens.links;
      });

function ultramarked (src, opt) {
  var options = assign({}, marked.defaults, opt);
  var aliases = options.aliases || ultramarked.aliases;
  var no = 'no-highlight';

  if (options.terminal) {
    delete options.ultralight;
    delete options.ultrasanitize;
  }
  if (options.ultralight) {
    options.langPrefix = 'ultralight-lang-'; // placeholder
    options.highlight = function (code, lang) {
      if (!lang) {
        return code;
      }
      var lower = lang.toLowerCase();
      try {
        return hljs.highlight(aliases[lower] || lower, code).value;

function(Lexer, InlineLexer, Renderer, TOC, Tasklist) {

    var gui = require('nw.gui'),
        win = gui.Window.get();

    var marked = require("marked");
    var options = store.get('Markdown') || {
          breaks: true,
          smartLists: true,
          langPrefix: '',
          smartypants: true
    };

    var defaults = merge(marked.defaults, options, {
      renderer: Renderer
    });

    var lexer = Lexer(defaults);
    marked.InlineLexer = InlineLexer(defaults);
    // marked.setOptions(defaults);
    
    var parse = window.marked = function(src) {
      var tokens = lexer.lex(src);
      // var toc = TOC(tokens);
      var tasks = Tasklist(tokens);
      // var title = toc.tokens[0] && toc.tokens[0].heading;
      var res = {};

      // res.title = title || i18n.t('untitled');

function renderCode(rend, defaults, text, language) {
  var config = getConfig(defaults, text, language);
  if (!config) return marked.defaults.renderer.code.call(rend, text.trim(), language);
  // remove config line
  text = text.slice(text.indexOf("\n") + 1);

  // will be prepended to a later box
  if (config.withNext) {
    if (rend._demobox_next) {
      rend._demobox_next.push([text, config, language]);
    } else {
      rend._demobox_next = [[text, config, language]];
    }
    return "";
  }

  var attrs = configAttrs(config);
  if (!rend._demobox_next) {
    return "<textarea data-demobox="">\n" + textAreaSafe(text) + "\n</textarea>";

+ "\n\\fB"
		+ name
		+ "\\fR"
		+ resc(text);
}
function manDate(date) {
	var stamp = parseInt(date);
	if (!isNaN(stamp) && stamp.toString().length == date.length) date = stamp;
	date = new Date(date);
	var month = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"][date.getMonth()];
	return month + " " + date.getFullYear();
}

marked.defaults.format = "roff";
marked.defaults.name = "";
if (marked.defaults.date == null) marked.defaults.date = new Date;
marked.defaults.section = "";
marked.defaults.manVersion = "";
marked.defaults.manual = "";
marked.defaults.gfm = true;
marked.defaults.breaks = false;
marked.defaults.ronn = false;

module.exports = marked;

+ quote("NAME")
		+ "\n\\fB"
		+ name
		+ "\\fR"
		+ resc(text);
}
function manDate(date) {
	var stamp = parseInt(date);
	if (!isNaN(stamp) && stamp.toString().length == date.length) date = stamp;
	date = new Date(date);
	var month = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"][date.getMonth()];
	return month + " " + date.getFullYear();
}

marked.defaults.format = "roff";
marked.defaults.name = "";
if (marked.defaults.date == null) marked.defaults.date = new Date;
marked.defaults.section = "";
marked.defaults.manVersion = "";
marked.defaults.manual = "";
marked.defaults.gfm = true;
marked.defaults.breaks = false;
marked.defaults.ronn = false;

module.exports = marked;

+ resc(text);
}
function manDate(date) {
	var stamp = parseInt(date);
	if (!isNaN(stamp) && stamp.toString().length == date.length) date = stamp;
	date = new Date(date);
	var month = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"][date.getMonth()];
	return month + " " + date.getFullYear();
}

marked.defaults.format = "roff";
marked.defaults.name = "";
if (marked.defaults.date == null) marked.defaults.date = new Date;
marked.defaults.section = "";
marked.defaults.manVersion = "";
marked.defaults.manual = "";
marked.defaults.gfm = true;
marked.defaults.breaks = false;
marked.defaults.ronn = false;

module.exports = marked;

var stamp = parseInt(date);
	if (!isNaN(stamp) && stamp.toString().length == date.length) date = stamp;
	date = new Date(date);
	var month = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"][date.getMonth()];
	return month + " " + date.getFullYear();
}

marked.defaults.format = "roff";
marked.defaults.name = "";
if (marked.defaults.date == null) marked.defaults.date = new Date;
marked.defaults.section = "";
marked.defaults.manVersion = "";
marked.defaults.manual = "";
marked.defaults.gfm = true;
marked.defaults.breaks = false;
marked.defaults.ronn = false;

module.exports = marked;

+ "\n.SH "
		+ quote("NAME")
		+ "\n\\fB"
		+ name
		+ "\\fR"
		+ resc(text);
}
function manDate(date) {
	var stamp = parseInt(date);
	if (!isNaN(stamp) && stamp.toString().length == date.length) date = stamp;
	date = new Date(date);
	var month = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"][date.getMonth()];
	return month + " " + date.getFullYear();
}

marked.defaults.format = "roff";
marked.defaults.name = "";
if (marked.defaults.date == null) marked.defaults.date = new Date;
marked.defaults.section = "";
marked.defaults.manVersion = "";
marked.defaults.manual = "";
marked.defaults.gfm = true;
marked.defaults.breaks = false;
marked.defaults.ronn = false;

module.exports = marked;