mustache.js

var mustache = require("mustache");
var fs = require("fs");

fs.readFile("app/views/index.mustache", function (err, data) {
  if (err) throw err;
  var output = mustache.render(data.toString(), {});

  fs.writeFile('public/index.html', output, function (err) {
    if (err) throw err;
  });
});