ng serve:找不到模块“@ angular-dev kit/build-angular”[重复]

Question

我知道这个问题在这里已经有了答案，但是没有一个答案为我解决了这个问题，我仍然得到了堆栈跟踪：

Could not find module "@angular-devkit/build-angular" from "F:\\Documents\\...".
Error: Could not find module "@angular-devkit/build-angular" from "F:\\Documents\\...".
    at Object.resolve (C:\Users\...\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\@angular-devkit\core\node\resolve.js:141:11)
    at Observable.rxjs_1.Observable [as _subscribe] (C:\Users\...\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\@angular-devkit\architect\src\architect.js:132:40)
    at Observable._trySubscribe (C:\Users\...\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\Observable.js:44:25)
    at Observable.subscribe (C:\Users\...\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\Observable.js:30:22)
    at C:\Users\...\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\Observable.js:99:19
    at new Promise (<anonymous>)
    at Observable.toPromise (C:\Users\...\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\Observable.js:97:16)
    at ServeCommand.initialize (C:\Users\...\AppData\Roaming\npm\node_modules\@angular\cli\models\architect-command.js:130:86)
    at process._tickCallback (internal/process/next_tick.js:68:7)
    at Function.Module.runMain (internal/modules/cjs/loader.js:745:11)

我的全局npm依赖项位于C:中，但我的项目文件夹和项目依赖项位于F:中

{
  "name": "...",
  "version": "0.0.0",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e",
    "prod": "ng build --prod"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "~7.1.0",
    "@angular/cdk": "^7.2.1",
    "@angular/common": "~7.1.0",
    "@angular/compiler": "~7.1.0",
    "@angular/core": "~7.1.0",
    "@angular/flex-layout": "^7.0.0-beta.23",
    "@angular/forms": "~7.1.0",
    "@angular/platform-browser": "~7.1.0",
    "@angular/platform-browser-dynamic": "~7.1.0",
    "@angular/router": "~7.1.0",
    "core-js": "^2.6.2",
    "moment": "^2.23.0",
    "ngx-moment": "^3.3.0",
    "rxjs": "^6.3.3",
    "rxjs-compat": "^6.3.3",
    "tslib": "^1.9.0",
    "zone.js": "^0.8.27"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "^0.12.1",
    "@angular-devkit/core": "^7.2.1",
    "@angular/cli": "~7.2.1",
    "@angular/compiler-cli": "~7.1.0",
    "@angular/language-service": "~7.1.0",
    "@types/jasmine": "~2.8.8",
    "@types/jasminewd2": "~2.0.3",
    "@types/node": "~8.9.4",
    "codelyzer": "~4.5.0",
    "jasmine-core": "~2.99.1",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~3.1.1",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "~2.0.1",
    "karma-jasmine": "~1.1.2",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.4.0",
    "ts-node": "~7.0.0",
    "tslint": "~5.11.0",
    "typescript": "~3.1.6"
  }
}

Answer 1

我有一个类似的问题..在处理 aspnetboilerplate 的有角 Ui 时

因此，我不再使用'npm'包管理器，而是使用yarn。

yarn add 

Answer 2

首先运行以下命令-

npm install --save-dev @angular-devkit/build-angular

如果上述命令不起作用，则移动到项目文件夹并运行以下命令：

npm install --save @angular-devkit/build-angular

如果您再次执行ng serve并且它不工作，那么只需通过下面的命令安装npm

npm install

现在运行您的项目。会有用的。

Answer 3

问题是您的角度项目找不到构建项目所需的“@angular-devkit/build-angular”依赖项。这由堆栈跟踪的以下部分指示：

从“F:\Documents\ ...”中找不到模块“@angular-devkit/build-angular”。

对于 Windows，用户计算机上的 F： 驱动器是指辅助存储设备，而用户的主存储驱动器是 C： 驱动器。

cd <path_to_project_root> 
npm i --save-dev @angular-devkit/build-angular

希望这有帮助！