failing express project

express_fail.js

var express = require('express')


var app = express.createServer();

app.get('/pass', function(req, res){
    res.send({foo: 'bar'});
});

app.get('/fail', function(req, res){
    res.contentType('application/json');
    res.send(1, {}, 200);
});

app.listen(3000);

thanks for the quick response.

perhaps I need to upgrade:

TypeError: Object #<ServerResponse> has no method 'json'