old_contents: 'use strict';
  
  var url = require('url');
  var path = require('path');
  var fs = require('fs');
  var ejs = require('ejs');
  
  
  module.exports = function(opt) {
  
    opt = opt || {};
    var ext = opt.ext || '.ejs';
    var config = opt.ejs || {};
    var baseDir = opt.baseDir || __dirname;
  
    return function(req, res, next) {
      var file = req.url === '/' ? ('/index' + ext) : req.url;
      var pathname = path.join(baseDir, url.parse(file).pathname);
  
      if (path.extname(pathname) === ext && fs.existsSync(pathname)) {
  
        var contents = fs.readFileSync(pathname).toString();
  
        config.query = url.parse(req.url, true).query;
        config.filename = pathname;
  
        contents = ejs.render(contents, config);
  
        if (opt.browserSync) {
          contents = contents.replace(/<\/head>/, '<script async src="//' + req.headers.host + '/browser-sync-client.1.3.6.js"></script></head>');
        }
  
        res.write(contents);
  
        res.end();
      } else {
        next();
      }
    };
  };
  
new_contents: 'use strict';
  
  var url = require('url');
  var path = require('path');
  var fs = require('fs');
  var ejs = require('ejs');
  
  
  module.exports = function(opt) {
  
    opt = opt || {};
    var ext = opt.ext || '.ejs';
    var config = opt.ejs || {};
    var baseDir = opt.baseDir || __dirname;
  
    return function(req, res, next) {
      var file = req.url === '/' ? ('/index' + ext) : req.url;
      var pathname = path.join(baseDir, url.parse(file).pathname);
  
      if (path.extname(pathname) === ext && fs.existsSync(pathname)) {
  
        var contents = fs.readFileSync(pathname).toString();
  
        config.query = url.parse(req.url, true).query;
        config.filename = pathname;
  
        contents = ejs.render(contents, config);
  
        if (opt.browserSync) {
          contents = contents.replace(/<\/head>/, '<script async src="//' + req.headers.host + '/browser-sync-client.1.3.7.js"></script></head>');
        }
  
        res.write(contents);
  
        res.end();
      } else {
        next();
      }
    };
  };
  
subject: update bs client script to 1.3.7