node.js - Error: Cannot find module 'res' in server.js -


i'm trying output "hello world" text . i'm using expressjs , using view engine called "ejs" . i'm beginner in nodejs 

var express = require("express"); var app = express(); var path = require('path'); var res = require("res");  var port = process.env.port; app.set('view engine'); app.set('views',path.resolve(__dirname,'client','views'));  app.get('/',function() {     res.render('index.ejs'); });  app.listen(port,function(){     console.log('server running in port '+port); });

here error:

 module.js:338     throw err;     ^  error: cannot find module 'res'     @ function.module._resolvefilename (module.js:336:15)     @ function.module._load (module.js:286:25)     @ module.require (module.js:365:17)     @ require (module.js:384:17)     @ object. (/home/ubuntu/workspace/server.js:4:11)     @ module._compile (module.js:434:26)     @ object.module._extensions..js (module.js:452:10)     @ module.load (module.js:355:32)     @ function.module._load (module.js:310:12)     @ module.runmain [as _ontimeout] (module.js:475:10)   process exited code: 1

what problem here?

res function parameter route handler, it's not module require().

try instead:

var express = require("express"); var app = express(); var path = require('path');  var port = process.env.port; app.set('view engine'); app.set('views',path.resolve(__dirname,'client','views'));  app.get('/',function(req, res) {     res.render('index.ejs'); });  app.listen(port,function(){     console.log('server running in port '+port); });

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