[Angular-CLI-6]无法确定 'Serve' 目标的单个项目

Question

我已经在 ng update @angular/cli 命令的帮助下更新了我的 angular-cli。在那之后，我得到一个错误 Could not determine single project for 'server' target 和以下错误跟踪。

Could not determine a single project for the 'serve' target.
Error: Could not determine a single project for the 'serve' target.
    at ServeCommand.getProjectNamesByTarget (E:\Angular\Projects\projectName\node_modules\@angular\cli\models\architect-command.js:175:19)
    at ServeCommand.<anonymous> (E:\Angular\Projects\projectName\node_modules\@angular\cli\models\architect-command.js:128:51)
    at Generator.next (<anonymous>)
    at E:\Angular\Projects\projectName\node_modules\@angular\cli\models\architect-command.js:7:71
    at new Promise (<anonymous>)
    at __awaiter (E:\Angular\Projects\projectName\node_modules\@angular\cli\models\architect-command.js:3:12)
    at ServeCommand.runArchitectTarget (E:\Angular\Projects\projectName\node_modules\@angular\cli\models\architect-command.js:121:16)
    at ServeCommand.<anonymous> (E:\Angular\Projects\projectName\node_modules\@angular\cli\commands\serve.js:34:25)
    at Generator.next (<anonymous>)
    at E:\Angular\Projects\projectName\node_modules\@angular\cli\commands\serve.js:7:71

这种行为让我很困惑。有关更多信息，我还在此处添加我的 package.json。

{
  "name": "ProjectName",
  "version": "0.0.0",
  "license": "MIT",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build --prod",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^5.2.0",
    "@angular/common": "^5.2.0",
    "@angular/compiler": "^5.2.0",
    "@angular/core": "^5.2.0",
    "@angular/forms": "^5.2.0",
    "@angular/http": "^5.2.0",
    "@angular/platform-browser": "^5.2.0",
    "@angular/platform-browser-dynamic": "^5.2.0",
    "@angular/router": "^5.2.0",
    "core-js": "^2.4.1",
    "rxjs": "^5.5.6",
    "zone.js": "^0.8.19"
  },
  "devDependencies": {
    "@angular/cli": "~6.0.8",
    "@angular/compiler-cli": "^5.2.0",
    "@angular/language-service": "^5.2.0",
    "@types/jasmine": "~2.8.3",
    "@types/jasminewd2": "~2.0.2",
    "@types/node": "~6.0.60",
    "codelyzer": "^4.0.1",
    "jasmine-core": "~2.8.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~2.0.0",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "^1.2.1",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.1.2",
    "ts-node": "~4.1.0",
    "tslint": "~5.9.1",
    "typescript": "~2.5.3",
    "@angular-devkit/build-angular": "~0.6.8"
  }
}

在这里，我明白了为什么会出现这个错误。谁能帮我解决一下？

Answer 1

您是否遵循了更新过程的所有三个步骤？

更新一般分为3个步骤，会利用新的ng更新工具。

1) 更新@angular/cli:

npm install -g @angular/cli
npm install @angular/cli
ng update @angular/cli

2) 更新您的 Angular 框架包：

ng update @angular/core

3) 更新其他依赖项

有关详细信息，请参阅此 post 的底部：https://blog.angular.io/version-6-of-angular-now-available-cc56b0efa7a4

另请参阅此 link 以了解这组步骤：https://update.angular.io/

Answer 2

Angular 6 添加了一个称为库的功能。我刚刚将我的通用项目从 angular 4 升级到 6，这导致了上面的错误，在我的例子中，问题是下面的脚本：

    "build:client-and-server-bundles": "ng build --prod && ng run project-name:server:production",

我通过将我的项目名称修改为脚本来修复它，如下所示：

    "build:client-and-server-bundles": "ng build my-main-project-name --prod && ng run my-main-project-name:server:production",

所以更改是通过构建命令进行的，所以现在您的 ng build --prod 命令将更改为 ng build --prod my-main-project-name 由于库，您可以拥有多个项目而不会让它们相互干扰。因此，您需要指定要构建的项目。

[Angular-CLI-6]无法确定 'Serve' 目标的单个项目

[Angular-CLI-6]Could not determine single project for 'Serve' target

angular

angular5

angular-cli

angular6

angular-cli-v6