Ionic 2 Build TypeError:无法读取未定义的属性“AssetUrl" [英] Ionic 2 Build TypeError: Cannot read property 'AssetUrl' of undefined

问题描述

Ionic 2 failed CLI build 给我以下错误:TypeError: Cannot read property 'AssetUrl' of undefined".

Ionic 2 failed CLI build giving me the following error: "TypeError: Cannot read property 'AssetUrl' of undefined".

我的研究使我找到了这个帖子和这个.

My research lead me to this thread and this one.

两个线程都建议修改package.json"文件，并去掉dependencies"和devDependencies"中版本前的^"符号.

我这样做了，然后是 CLI:

I did that and then CLI:

• 离子 rm 平台安卓
• 离子添加平台android
• 最后:离子构建 android

我仍然遇到同样的错误.

I still get the same error.

在 的某个时刻这个线程，它建议使用一些我(还)不熟悉的 npm 命令，引用它:rm -rf node_modules and npm cache clean and a fresh npm install".我真的不明白这一切的背后是什么.

At some point in this thread , it suggests using some npm command I am not familiar with (yet), quoting it: "rm -rf node_modules and npm cache clean and a fresh npm install". I don't really understand what is under the hood of all this.

如果有人想出神奇的解决方案来使构建运行正常，我将不胜感激.但我也想了解TypeError:无法读取未定义的属性'AssetUrl'"如何与package.json"相关联?我不明白为什么这个错误会导致可能的解决方案.

I would be grateful if someone come up with the magic solution to make the build run fine. But also I'd like to understand how "TypeError: Cannot read property 'AssetUrl' of undefined" could be linked with the "package.json"? I don't get why this error lead to that possible solution.

我的版本是:npm 3.10.3节点 6.7.0科尔多瓦 6.3.1离子2.1.0

My version are: npm 3.10.3 node 6.7.0 cordova 6.3.1 ionic 2.1.0

这是我的 package.json，因为它在运行两个线程中读取的建议后现在看起来:

Here is my package.json as it looks now afer operating the suggestion read in both threads:

{
  "name": "ionic-hello-world",
  "author": "Ionic Framework",
  "homepage": "http://ionicframework.com/",
  "private": true,
  "scripts": {
    "build": "ionic-app-scripts build",
    "watch": "ionic-app-scripts watch",
    "serve:before": "watch",
    "emulate:before": "build",
    "deploy:before": "build",
    "build:before": "build",
    "run:before": "build"
  },
  "dependencies": {
    "@angular/common": "2.0.0",
    "@angular/compiler": "2.0.0",
    "@angular/compiler-cli": "0.6.2",
    "@angular/core": "2.0.0",
    "@angular/forms": "2.0.0",
    "@angular/http": "2.0.0",
    "@angular/platform-browser": "2.0.0",
    "@angular/platform-browser-dynamic": "2.0.0",
    "@angular/platform-server": "2.0.0",
    "ionic-angular": "2.0.0-rc.0",
    "ionicons": "3.0.0",
    "@ionic/storage": "1.0.3",
    "ionic-native": "2.0.3",
    "rxjs": "5.0.0-beta.12",
    "zone.js": "0.6.21"
  },
  "devDependencies": {
    "@ionic/app-scripts": "0.0.36",
    "typescript": "2.0.3"
  },
  "description": "HelloWorld: An Ionic project",
  "cordovaPlugins": [
    "cordova-plugin-device",
    "cordova-plugin-console",
    "cordova-plugin-whitelist",
    "cordova-plugin-splashscreen",
    "cordova-plugin-statusbar",
    "ionic-plugin-keyboard"
  ],
  "cordovaPlatforms": []
}

推荐答案

我在项目文件夹内的 CLI 中做了一个npm install" + 去掉dependencies"和devDependencies"前面的^"符号package.json (正如我的问题中链接的论坛主题中所建议的那样).它解决了它.

I did in CLI within the folder of the projet an "npm install" + take away "^" sign in front of "dependencies" and "devDependencies" in package.json (as advised in the forum threads which are linked in my question). And it solved it.

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