node.js - Using lessjs with express 3 -

i new nodejs , related it. using twitter-bootstrap framework node js. ran following commands -

npm install -g twitter-bootstrap-node twitter-bootstrap create myproject 

this using express 2 default upgraded express 3. since getting following error when start express-

$ node app warning: express.createserver() deprecated, express applications no longer inherit http.server, please use:    var express = require("express");   var app = express();   /users/tusharmathur/pebbles/app.js:17   app.use(express.compiler({                   ^ typeerror: object function createapplication() {   var app = connect();   utils.merge(app, proto);   app.request = { __proto__: req };   app.response = { __proto__: res };   app.init();   return app; } has no method 'compiler'     @ function.app.configure.app.use.express.errorhandler.dumpexceptions (/users/tusharmathur/pebbles/app.js:17:19)     @ function.app.configure (/users/tusharmathur/pebbles/node_modules/express/lib/application.js:395:61)     @ object.<anonymous> (/users/tusharmathur/pebbles/app.js:12:5)     @ module._compile (module.js:456:26)     @ object.module._extensions..js (module.js:474:10)     @ module.load (module.js:356:32)     @ function.module._load (module.js:312:12)     @ function.module.runmain (module.js:497:10)     @ startup (node.js:119:16)     @ node.js:903:3 

here app.js file

/**  * module dependencies.  */  var express = require('express'),   routes = require('./routes');  var app = module.exports = express.createserver();  // configuration  app.configure(function() {   app.set('views', __dirname + '/views');   app.set('view engine', 'jade');   app.use(express.bodyparser());   app.use(express.methodoverride());   app.use(express.compiler({     src: __dirname + '/public',     enable: ['less']   }));   app.use(app.router);   app.use(express.static(__dirname + '/public'));  });  app.configure('development', function() {   app.use(express.errorhandler({     dumpexceptions: true,     showstack: true   })); });  app.configure('production', function() {   app.use(express.errorhandler()); });  // compatible  // less files @import 'whatever.less' work(https://github.com/senchalabs/connect/pull/174) var twitter_bootstrap_path = './vendor/twitter/bootstrap/less'; express.compiler.compilers.less.compile = function(str, fn) {   try {     var less = require('less');     var parser = new less.parser({       paths: [twitter_bootstrap_path]     });     parser.parse(str, function(err, root) {       fn(err, root.tocss());     });   } catch (err) {     fn(err);   } }  // routes  app.get('/', routes.index);  app.listen(3000, function() {   console.log("express server listening on port %d in %s mode", app.address().port, app.settings.env); }); 

as message says, express not have compiler message anymore. should use middleware allows build less files. 1 example less.js-middleware.

after installing (npm install less-middleware) can use demonstrated in documentation:

var lessmiddleware = require('less-middleware');     var app = express.createserver();  app.configure(function () {         app.use(lessmiddleware({         src: __dirname + '/public',         compress: true     })); });