TypeError: undefined is not a function

[agaolong]

E:\Workspaces\JavaScript\Purelog\purelog>node-dev app.js TypeError: undefined is not a function at Object. (E:\Workspaces\JavaScript\Purelog\purelog\app.js:8:5) at Module._compile (module.js:460:26) at Module._extensions..js (module.js:478:10) at Object.nodeDevHook as .js at Module.load (module.js:355:32) at Function.Module._load (module.js:310:12) at Module.require (module.js:365:17) at require (module.js:384:17) at Object. (C:\Users\Administrator\AppData\Roaming\npm\node_modules\node-dev\lib\wrap.js:58:1) at Module._compile (module.js:460:26)

[wvv8oo]

应该不支持express 4.x，而package.json没有限制具体的版本，我觉得你可以先把package.json中的express版本改为3.x 即

express: "3.x"