generator.js

var fs = require('fs');
var marked = require('./js/marked.js');

marked.setOptions({
  renderer: new marked.Renderer(),
  gfm: true,
  tables: true,
  breaks: false,
  pedantic: false,
  sanitize: false, // IMPORTANT, because we do MathJax before markdown,
                  //            however we do escaping in 'CreatePreview'.
  smartLists: true,
  smartypants: false
});

var templateHtml = '';
fs.readFile('template.html', function (err, data) {
  if (err)
    throw err;
  if (data)
    templateHtml = data.toString('utf8');
});

fs.readdir(__dirname + '/posts/', function(err, files) {
  if (err) return;
  files.forEach(function(f) {
    if (f.indexOf('.md') != -1 && f != 'home.md') {
      //- [Markdown Test Page](#lorem-ipsum)
      fs.readFile(__dirname + '/posts/' + f, 'utf8', (err, data) => {
        if (err) throw err;
        var firstLine = data.split("\n")[0];  // READ FIRST LINE
        var title = firstLine.slice(2, firstLine.length-1); // REMOVE "# " and "\n"
        var markAnchor = '- [' + title + '](#' + f + ')';

        fs.appendFile('routes.md', markAnchor + "\n", (err) => {
          if (err) throw err;
          console.log(markAnchor + " is saved in routes.md");
        });

      });
    }
  })
});


fs.readdir(__dirname + '/posts/', function(err, files) {
    if (err) return;
    files.forEach(function(f) {
        if (f.indexOf('.md') != -1) {
        	var htmlOutput = __dirname + '/posts/' + f.replace('.md', '.html');
	        var postContent = '';
	        var htmlContent = '';
	        var metaData = '';
	        fs.readFile(__dirname + '/posts/' + f, function (err, data) {
			  if (err)
			    throw err;
			  if (data) {
			  	var markdownPost = data.toString('utf8');
			  	var lines = markdownPost.split('\n');
			  	var title = '';
			  	if (lines.length > 0) {
			  		title = lines[0].replace(/#/g, '').replace("\r\n", '').replace("\n", '');
			  		if (lines.length > 6 && lines[lines.length - 6].indexOf('<meta') == 0) {
			  			metaData = lines.slice(lines.length - 6).join('\n');
			  			markdownPost = markdownPost.split('\n');
			  			markdownPost.splice(markdownPost.length - 6);
			  			markdownPost = markdownPost.join('\n');
			  		}
			  	}
			  	postContent = marked(markdownPost);
			  	htmlContent = templateHtml.replace('{%content%}', postContent);
			  	htmlContent = htmlContent.replace('{%title%}', title);
			  	htmlContent = htmlContent.replace('{%meta%}', metaData);
			  	fs.writeFile(htmlOutput, htmlContent, function (err) {
				     if (err)
				       throw err;
				     else
				     	console.log('>>', htmlOutput);
				});
			  }
			});
        }
    });
});