ng build——从Angular2升级到Angular4后prod失败

使用以下工具将我的Angular2项目升级为Angular4后：

使用ng build-prod时，我收到以下错误：

没有-prod标志，我不会得到任何错误。关于stackoverflow有一些类似的问题，但没有任何公认的答案，也与升级到Angular4无关。 这是我的package.json：

{
  "name": "MyProject",
  "version": "0.0.0",
  "license": "MIT",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^4.0.0",
    "@angular/common": "^4.0.0",
    "@angular/compiler": "^4.0.0",
    "@angular/core": "^4.0.0",
    "@angular/forms": "^4.0.0",
    "@angular/http": "^4.0.0",
    "@angular/platform-browser": "^4.0.0",
    "@angular/platform-browser-dynamic": "^4.0.0",
    "@angular/platform-server": "^4.0.0",
    "@angular/router": "^4.0.0",
    "angular-2-dropdown-multiselect": "^1.0.5",
    "angular2-uuid": "^1.1.1",
    "bootstrap": "^3.3.7",
    "core-js": "^2.4.1",
    "font-awesome": "^4.7.0",
    "jquery": "^3.1.1",
    "ng2-adal": "^0.3.0",
    "rxjs": "^5.1.0",
    "zone.js": "^0.8.4"
  },
  "devDependencies": {
    "@angular/cli": "1.0.0",
    "@angular/compiler-cli": "^4.0.0",
    "@types/jasmine": "2.5.46",
    "@types/node": "~7.0.11",
    "codelyzer": "~2.0.0",
    "jasmine-core": "~2.5.2",
    "jasmine-spec-reporter": "~3.2.0",
    "karma": "~1.5.0",
    "karma-chrome-launcher": "~2.0.0",
    "karma-cli": "~1.0.1",
    "karma-coverage-istanbul-reporter": "^1.0.0",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.1.0",
    "ts-node": "~2.0.0",
    "typescript": "^2.2.1",
    "tslint": "~4.5.0"
  }
}

编辑。以下是使用ng new和新CLI创建的project.json：

{
  "name": "mypro",
  "version": "0.0.0",
  "license": "MIT",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/common": "^4.0.0",
    "@angular/compiler": "^4.0.0",
    "@angular/core": "^4.0.0",
    "@angular/forms": "^4.0.0",
    "@angular/http": "^4.0.0",
    "@angular/platform-browser": "^4.0.0",
    "@angular/platform-browser-dynamic": "^4.0.0",
    "@angular/router": "^4.0.0",
    "core-js": "^2.4.1",
    "rxjs": "^5.1.0",
    "zone.js": "^0.8.4"
  },
  "devDependencies": {
    "@angular/cli": "1.0.0",
    "@angular/compiler-cli": "^4.0.0",
    "@types/jasmine": "2.5.38",
    "@types/node": "~6.0.60",
    "codelyzer": "~2.0.0",
    "jasmine-core": "~2.5.2",
    "jasmine-spec-reporter": "~3.2.0",
    "karma": "~1.4.1",
    "karma-chrome-launcher": "~2.0.0",
    "karma-cli": "~1.0.1",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "karma-coverage-istanbul-reporter": "^0.2.0",
    "protractor": "~5.1.0",
    "ts-node": "~2.0.0",
    "tslint": "~4.5.0",
    "typescript": "~2.2.0"
  }
}

---

有什么建议吗？

您可以让您的应用程序进行构建，但您很可能需要在-prod中包含-aot false参数才能使其正常工作。见下文

ng构建-生产-aot错误

默认的生产构建编译模式现在是AOT编译。为了让AOT工作，您必须在代码中执行一些额外的步骤，或者通过将标志设置为false来避免AOT。这本书应该会有所帮助

GitHub for ng build表明-aot标志的默认值为false，但情况似乎并非如此。ng build-help没有显示默认值。使用该标志显示/证明默认值为真

当我遇到AOT问题时，我通常会收到比您在问题中显示的更好的错误消息；至少有一个组件名，或者告诉我应该在哪里查找的东西。我在错误中看到的很多东西，比如没有在组件中显式声明变量。JIT并不关心这一点，但AOT一点也不喜欢它

---

希望这对您有所帮助。

您可以构建应用程序，但您很可能需要在-prod中包含-aot false参数才能使其正常工作。见下文

ng构建-生产-aot错误

默认的生产构建编译模式现在是AOT编译。为了让AOT工作，您必须在代码中执行一些额外的步骤，或者通过将标志设置为false来避免AOT。这本书应该会有所帮助

GitHub for ng build表明-aot标志的默认值为false，但情况似乎并非如此。ng build-help没有显示默认值。使用该标志显示/证明默认值为真

当我遇到AOT问题时，我通常会收到比您在问题中显示的更好的错误消息；至少有一个组件名，或者告诉我应该在哪里查找的东西。我在错误中看到的很多东西，比如没有在组件中显式声明变量。JIT并不关心这一点，但AOT一点也不喜欢它

---

希望这对您有所帮助。

您的package.json与使用您的CLI版本的ng new中的package.json相比如何？@jornsharpe很好，我已经尝试过使用这些版本，但不断收到相同的错误消息。我将在新的CLI版本中发布使用ng new创建的package.json。尝试以下操作时生成是否有效：ng build-prod-aot false？@R.Richards是的，如果添加-aot false参数，则生成不会出错。知道出了什么问题吗？默认的构建编译模式现在是AOT编译，不管wiki在angular.io上怎么说。为了让AOT正常工作，您必须在代码中执行一些额外的步骤，或者通过将标志设置为false来避免AOT。当我遇到AOT问题时，我通常会收到比您显示的更好的错误消息。至少有一个组件名或其他名称。您的package.json与您的CLI版本的ng new中的package.json相比如何？@jornsharpe很好的一点，我已经尝试过使用这些版本，但一直收到相同的错误消息。我将在新的CLI版本中发布使用ng new创建的package.json。尝试以下操作时生成是否有效：ng build-prod-aot false？@R.Richards是的，如果添加-aot false参数，则生成不会出错。知道出了什么问题吗？默认的构建编译模式现在是AOT编译，不管wiki在angular.io上怎么说。为了让AOT正常工作，您必须在代码中执行一些额外的步骤，或者通过将标志设置为false来避免AOT。当我遇到AOT问题时，我通常会收到比您显示的更好的错误消息。至少有一个组件名，或者别的什么。

{
  "name": "MyProject",
  "version": "0.0.0",
  "license": "MIT",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^4.0.0",
    "@angular/common": "^4.0.0",
    "@angular/compiler": "^4.0.0",
    "@angular/core": "^4.0.0",
    "@angular/forms": "^4.0.0",
    "@angular/http": "^4.0.0",
    "@angular/platform-browser": "^4.0.0",
    "@angular/platform-browser-dynamic": "^4.0.0",
    "@angular/platform-server": "^4.0.0",
    "@angular/router": "^4.0.0",
    "angular-2-dropdown-multiselect": "^1.0.5",
    "angular2-uuid": "^1.1.1",
    "bootstrap": "^3.3.7",
    "core-js": "^2.4.1",
    "font-awesome": "^4.7.0",
    "jquery": "^3.1.1",
    "ng2-adal": "^0.3.0",
    "rxjs": "^5.1.0",
    "zone.js": "^0.8.4"
  },
  "devDependencies": {
    "@angular/cli": "1.0.0",
    "@angular/compiler-cli": "^4.0.0",
    "@types/jasmine": "2.5.46",
    "@types/node": "~7.0.11",
    "codelyzer": "~2.0.0",
    "jasmine-core": "~2.5.2",
    "jasmine-spec-reporter": "~3.2.0",
    "karma": "~1.5.0",
    "karma-chrome-launcher": "~2.0.0",
    "karma-cli": "~1.0.1",
    "karma-coverage-istanbul-reporter": "^1.0.0",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.1.0",
    "ts-node": "~2.0.0",
    "typescript": "^2.2.1",
    "tslint": "~4.5.0"
  }
}

{
  "name": "mypro",
  "version": "0.0.0",
  "license": "MIT",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/common": "^4.0.0",
    "@angular/compiler": "^4.0.0",
    "@angular/core": "^4.0.0",
    "@angular/forms": "^4.0.0",
    "@angular/http": "^4.0.0",
    "@angular/platform-browser": "^4.0.0",
    "@angular/platform-browser-dynamic": "^4.0.0",
    "@angular/router": "^4.0.0",
    "core-js": "^2.4.1",
    "rxjs": "^5.1.0",
    "zone.js": "^0.8.4"
  },
  "devDependencies": {
    "@angular/cli": "1.0.0",
    "@angular/compiler-cli": "^4.0.0",
    "@types/jasmine": "2.5.38",
    "@types/node": "~6.0.60",
    "codelyzer": "~2.0.0",
    "jasmine-core": "~2.5.2",
    "jasmine-spec-reporter": "~3.2.0",
    "karma": "~1.4.1",
    "karma-chrome-launcher": "~2.0.0",
    "karma-cli": "~1.0.1",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "karma-coverage-istanbul-reporter": "^0.2.0",
    "protractor": "~5.1.0",
    "ts-node": "~2.0.0",
    "tslint": "~4.5.0",
    "typescript": "~2.2.0"
  }
}