TypeError：无法读取undefined的属性'codeGen'

Question

[09:11:17]  build prod started ... 
[09:11:17]  clean started ... 
[09:11:17]  clean finished in 2 ms 
[09:11:17]  copy started ... 
[09:11:17]  ngc started ... 
TypeError: Cannot read property 'codeGen' of undefined

当我ionic cordova build android --prod出现此错误时，我可以ionic cordova build android or --release无问题。

谷歌半月已经，还是不能给出答案，不知道哪里有问题

更新：

当我更新Ionic-CLI警告时

[WARN] Detected @ionic/cli-plugin-cordova in your package.json.

       As of CLI 3.8, it is no longer needed. You can uninstall it:

       npm uninstall --save-dev --save-exact @ionic/cli-plugin-cordova

[WARN] Detected @ionic/cli-plugin-ionic-angular in your package.json.

       As of CLI 3.8, it is no longer needed. You can uninstall it:

       npm uninstall --save-dev --save-exact @ionic/cli-plugin-ionic-angular

离子信息

cli packages: (/usr/local/lib/node_modules)

    @ionic/cli-utils  : 1.9.2
    ionic (Ionic CLI) : 3.9.2

global packages:

    Cordova CLI : 7.0.1 

local packages:

    @ionic/app-scripts : 2.1.3
    Cordova Platforms  : android 6.2.3
    Ionic Framework    : ionic-angular 2.0.0

System:

    ios-deploy : 1.9.1 
    ios-sim    : 6.0.0 
    Node       : v6.11.0
    npm        : 3.10.10 
    OS         : macOS Sierra
    Xcode      : Xcode 8.3.3 Build version 8E3004b 

使用选项1后

Answer 1

我想您正在尝试使用Ionic 3 CLI编译离子2项目。

您可以采取两项措施来解决此错误：

1）卸载ionic3 CLI并安装ionic2 CLI（我不喜欢Ionic3是最新的功能更多）

npm uninstall -g ionic
npm install ionic@2.2.3

2）将您的项目升级到Ionic 3（优先且易于实施） 更新你的package.json：

"ionic-angular": "3.6.0"
"typescript": "2.3.4"

将所有Angular依赖项从2更新为

"@angular/* "= "4.0.0"

然后执行npm install，您的问题可能会得到解决。

请参阅此Article以进行无缝迁移

Answer 2

更新您的Ionic-CLI

npm install ionic@latest