TypeError:express不是一个函数

嗨,我试图用jade和一起express 。 但它是给我TypeError 。 我创build了npm initnpm install express -save ,然后是node app.js 但它给我同样的错误"TypeError: express is not a function"

 // Module dependencies var express = require('express') , nib = require('nib') , mysql = require('mysql') var app = express(); var app = module.exports = app.createServer(); app.set('views', __dirname + '/views') app.set('view engine', 'jade') app.use(express.logger('dev')) 

package.json

 { "name": "reddit-node-mysql", "description": "A demo of how to use Express and MySQL together", "author": "Clarence Leung <github@clarle>", "version": "0.0.1", "private": true, "dependencies": { "express": "^2.5.11", "mysql": "~2.0", "nib": "^1.1.2", "jade": "^1.0.4" }, "main": "app.js", "scripts": { "test": "echo \"Error: no test specified\" && exit 1" }, "license": "ISC", "devDependencies": {} } 

解决scheme我的模块的版本过时,所以他们不能安装好。 我更新了他们的版本,现在正在工作。

你正在使用过时的快递,

去掉
"express": "^2.5.11",从package json运行

npm install express --save-dev