找不到模块“@ angular-devkit / build-angular”

Question

更新到Angular 6.0.1后，我在ng serve上收到以下错误：

Could not find module "@angular-devkit/build-angular" from "/home/Projects/myProjectName".
Error: Could not find module "@angular-devkit/build-angular" from "/home/Projects/myProjectName".
    at Object.resolve (/home/Projects/myProjectName/node_modules/@angular-devkit/core/node/resolve.js:141:11)
    at Observable.rxjs_1.Observable [as _subscribe] (/home/Projects/myProjectName/node_modules/@angular-devkit/architect/src/architect.js:132:40)

ng update说一切都井然有序。删除node_modules文件夹和新的npm install安装也没有帮助。

我的项目基于[ng2-admin（Angular 4版本）]。（qazxsw poi）这是我的package.json依赖项：

https://github.com/akveo/ngx-admin

和我的angular.json：

 "dependencies": {
    "@angular/animations": "^6.0.1",
    "@angular/common": "^6.0.1",
    "@angular/compiler": "^6.0.1",
    "@angular/core": "^6.0.1",
    "@angular/forms": "^6.0.1",
    "@angular/http": "^6.0.1",
    "@angular/platform-browser": "^6.0.1",
    "@angular/platform-browser-dynamic": "^6.0.1",
    "@angular/platform-server": "^6.0.1",
    "@angular/router": "^6.0.1",
    "@ng-bootstrap/ng-bootstrap": "1.0.0-alpha.26",
    "@ngx-translate/core": "^10.0.1",
    "@ngx-translate/http-loader": "^3.0.1",
    "amcharts3": "github:amcharts/amcharts3",
    "ammap3": "github:amcharts/ammap3",
    "angular-table": "^1.0.4",
    "angular2-csv": "^0.2.5",
    "angular2-datatable": "0.6.0",
    "animate.css": "3.5.2",
    "bootstrap": "4.0.0-alpha.6",
    "bower": "^1.8.4",
    "chart.js": "1.1.1",
    "chartist": "0.10.1",
    "chroma-js": "1.3.3",
    "ckeditor": "4.6.2",
    "core-js": "2.4.1",
    "easy-pie-chart": "2.1.7",
    "font-awesome": "4.7.0",
    "fullcalendar": "3.3.1",
    "google-maps": "3.2.1",
    "ionicons": "2.0.1",
    "jquery": "3.2.1",
    "jquery-slimscroll": "1.3.8",
    "leaflet": "0.7.7",
    "leaflet-map": "0.2.1",
    "lodash": "4.17.4",
    "ng2-ckeditor": "1.1.6",
    "ng2-completer": "^1.6.3",
    "ng2-handsontable": "^2.1.0-rc.3",
    "ng2-slim-loading-bar": "^4.0.0",
    "ng2-smart-table": "^1.0.3",
    "ng2-tree": "2.0.0-alpha.5",
    "ngx-uploader": "4.2.4",
    "normalize.css": "6.0.0",
    "roboto-fontface": "0.7.0",
    "rxjs": "^6.1.0",
    "rxjs-compat": "^6.1.0",
    "zone.js": "0.8.26"
  },
  "devDependencies": {
    "@angular/cli": "^6.0.1",
    "@angular/compiler-cli": "^6.0.1",
    "@types/fullcalendar": "2.7.40",
    "@types/jasmine": "2.5.38",
    "@types/jquery": "2.0.41",
    "@types/jquery.slimscroll": "1.3.30",
    "@types/lodash": "4.14.61",
    "@types/node": "6.0.69",
    "codelyzer": "3.0.1",
    "gh-pages": "0.12.0",
    "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-coverage-istanbul-reporter": "0.2.0",
    "karma-jasmine": "1.1.0",
    "karma-jasmine-html-reporter": "0.2.2",
    "npm-run-all": "4.0.2",
    "protractor": "5.1.0",
    "rimraf": "2.6.1",
    "standard-changelog": "1.0.1",
    "stylelint": "7.10.1",
    "ts-node": "2.1.2",
    "tslint": "5.2.0",
    "tslint-eslint-rules": "4.0.0",
    "tslint-language-service": "0.9.6",
    "typescript": "^2.7.2",
    "typogr": "0.6.6",
    "underscore": "1.8.3",
    "wintersmith": "2.2.5",
    "wintersmith-sassy": "1.1.0"
  }

Answer 1

将

{
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
  "version": 1,
  "newProjectRoot": "projects",
  "projects": {
    "ng2-admin": {
      "root": "",
      "sourceRoot": "src",
      "projectType": "application",
      "architect": {
        "build": {
          "builder": "@angular-devkit/build-angular:browser",
          "options": {
            "outputPath": "dist",
            "index": "src/index.html",
            "main": "src/main.ts",
            "tsConfig": "src/tsconfig.app.json",
            "polyfills": "src/polyfills.ts",
            "assets": [
              "src/assets",
              "src/favicon.ico"
            ],
            "styles": [
              "node_modules/roboto-fontface/css/roboto/sass/roboto-fontface.scss",
              "node_modules/normalize.css/normalize.css",
              "node_modules/font-awesome/scss/font-awesome.scss",
              "node_modules/ionicons/scss/ionicons.scss",
              "node_modules/bootstrap/scss/bootstrap.scss",
              "node_modules/leaflet/dist/leaflet.css",
              "node_modules/chartist/dist/chartist.css",
              "node_modules/fullcalendar/dist/fullcalendar.css",
              "node_modules/handsontable/dist/handsontable.full.css",
              "node_modules/ng2-slim-loading-bar/style.css",
              "src/app/theme/theme.scss",
              "src/styles.scss"
            ],
            "scripts": [
              "node_modules/jquery/dist/jquery.js",
              "node_modules/easy-pie-chart/dist/jquery.easypiechart.js",
              "node_modules/jquery-slimscroll/jquery.slimscroll.js",
              "node_modules/tether/dist/js/tether.js",
              "node_modules/bootstrap/dist/js/bootstrap.js",
              "node_modules/handsontable/dist/handsontable.full.js",
              "node_modules/chroma-js/chroma.js"
            ]
          },
          "configurations": {
            "production": {
              "optimization": true,
              "outputHashing": "all",
              "sourceMap": false,
              "extractCss": true,
              "namedChunks": false,
              "aot": true,
              "extractLicenses": true,
              "vendorChunk": false,
              "buildOptimizer": true,
              "fileReplacements": [
                {
                  "replace": "src/environments/environment.ts",
                  "with": "src/environments/environment.prod.ts"
                }
              ]
            }
          }
        },
        "serve": {
          "builder": "@angular-devkit/build-angular:dev-server",
          "options": {
            "browserTarget": "ng2-admin:build"
          },
          "configurations": {
            "production": {
              "browserTarget": "ng2-admin:build:production"
            }
          }
        },
        "extract-i18n": {
          "builder": "@angular-devkit/build-angular:extract-i18n",
          "options": {
            "browserTarget": "ng2-admin:build"
          }
        },
        "test": {
          "builder": "@angular-devkit/build-angular:karma",
          "options": {
            "main": "src/test.ts",
            "karmaConfig": "./karma.conf.js",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "src/tsconfig.spec.json",
            "scripts": [
              "node_modules/jquery/dist/jquery.js",
              "node_modules/easy-pie-chart/dist/jquery.easypiechart.js",
              "node_modules/jquery-slimscroll/jquery.slimscroll.js",
              "node_modules/tether/dist/js/tether.js",
              "node_modules/bootstrap/dist/js/bootstrap.js",
              "node_modules/handsontable/dist/handsontable.full.js",
              "node_modules/chroma-js/chroma.js"
            ],
            "styles": [
              "node_modules/roboto-fontface/css/roboto/sass/roboto-fontface.scss",
              "node_modules/normalize.css/normalize.css",
              "node_modules/font-awesome/scss/font-awesome.scss",
              "node_modules/ionicons/scss/ionicons.scss",
              "node_modules/bootstrap/scss/bootstrap.scss",
              "node_modules/leaflet/dist/leaflet.css",
              "node_modules/chartist/dist/chartist.css",
              "node_modules/fullcalendar/dist/fullcalendar.css",
              "node_modules/handsontable/dist/handsontable.full.css",
              "node_modules/ng2-slim-loading-bar/style.css",
              "src/app/theme/theme.scss",
              "src/styles.scss"
            ],
            "assets": [
              "src/assets",
              "src/favicon.ico"
            ]
          }
        },
        "lint": {
          "builder": "@angular-devkit/build-angular:tslint",
          "options": {
            "tsConfig": [
              "src/tsconfig.app.json",
              "src/tsconfig.spec.json"
            ],
            "exclude": []
          }
        }
      }
    },
    "ng2-admin-e2e": {
      "root": "",
      "sourceRoot": "",
      "projectType": "application",
      "architect": {
        "e2e": {
          "builder": "@angular-devkit/build-angular:protractor",
          "options": {
            "protractorConfig": "./protractor.conf.js",
            "devServerTarget": "ng2-admin:serve"
          }
        },
        "lint": {
          "builder": "@angular-devkit/build-angular:tslint",
          "options": {
            "tsConfig": [
              "e2e/tsconfig.e2e.json"
            ],
            "exclude": []
          }
        }
      }
    }
  },
  "defaultProject": "ng2-admin",
  "schematics": {
    "@schematics/angular:component": {
      "prefix": "app",
      "styleext": "scss"
    },
    "@schematics/angular:directive": {
      "prefix": "app"
    }
  }
}

安装为dev依赖项。这个包是在Angular 6.0中新引入的

@angular-devkit/build-angular

要么，

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

Answer 2

当我们运行像npm audit这样的命令时，它使用@ angular / cli的本地版本。所以首先在本地安装@ angular / cli的最新版本（不带-g标志）。然后使用ng serve命令更新cli。我应该解决这个问题。谢谢

如果您要更新角度项目ng update @angular/cli，此链接可能会对您有所帮助

Answer 3

我对Angular 7也有同样的问题。刚刚执行了以下命令，错误就解决了。

https://update.angular.io/

Answer 4

先试试这个

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

如果丢失的包再次出现错误，请尝试

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

Answer 5

以下命令有效：

npm install

- 你可能会看到消息“我们分析了你的package.json，一切似乎都井然有序。干得好！”

npm install
ng update

然后尝试开发构建

npm update

我得到了类型脚本的错误，降级为

ng build 

prod build的所有成功。

以下是工作组合

npm install typescript@">=3.1.1 <3.2

ng build --prod 

Answer 6

将节点从v9升级到v10后，我今天遇到了同样的问题。 我的环境是由docker设置的，我不得不从我的DockerFile中删除这个命令：

ng --version

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.11.0
@angular-devkit/build-angular     0.11.0
@angular-devkit/build-optimizer   0.11.0
@angular-devkit/build-webpack     0.11.0
@angular-devkit/core              7.1.0
@angular-devkit/schematics        7.1.0
@angular/cli                      7.1.0
@ngtools/webpack                  7.1.0
@schematics/angular               7.1.0
@schematics/update                0.11.0
rxjs                              6.3.3
typescript                        3.1.6
webpack                           4.23.1

它会为安装节点的目录创建一个符号链接。 我猜其中的npm link @angular/cli 模块与我项目的node_modules目录中的angular/cli模块版本不同，这会导致问题。

Answer 7

试试这个。它对我有用

npm uninstall -g @angular/cli
npm cache verify
npm install -g @angular/cli@next

Answer 8

这对我有用，提交然后：

ng update @angular/cli @angular/core
npm install --save-dev @angular/cli@latest

Answer 9

运行以下为我工作npm audit fix --force

Answer 10

在你的dev依赖项下添加@angular-devkit/build-angular它会起作用，或者你也可以执行

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

Answer 11

删除package-lock.json并再次执行npm install。它应该解决这个问题。

**当您使用ng new创建Angular 6应用程序并且在安装其他依赖项后发现此错误时，此修复程序更合适。

Answer 12

yarn add @angular-devkit/build-angular --dev

它就像一个魅力。

Answer 13

就我而言，问题是因为缺少依赖性。为什么缺少依赖，因为我忘了打电话：

npm安装

在调用上面的命令之后，所有必需的依赖项都加载到node_modules中，这不再是问题

Answer 14

在CLI上执行以下命令：

• npm安装

Answer 15

• 删除node_modules。
• 使用'npm cache clean --verify'清除缓存。
• 然后再次安装npm。

对我来说就像一个魅力。

Answer 16

当角度项目未完全配置时，通常会发生此错误。

这会奏效

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

npm install

Answer 17

不幸的是，所提供的解决方案都不适合我，但grepit的答案激励我做以下步骤。我通过我的操作系统（Windows 10）卸载了node.js并再次安装。然后安装了Angular CLI。然后创建了一个新项目，并将我的旧项目的src文件复制到这个新项目中，错误消失了。

以下是说明：

1. 通过您的操作系统卸载node.js并重新安装
2. npm install -g @angular/cli
3. 将您的项目重命名为YOUR_PROJECT_NAME.old
4. ng new YOUR_PROJECT_NAME
5. 运行此hello world项目（ng serve）以确保您不会收到错误。
6. xcopy YOUR_PROJECT_NAME.old\src\*.* YOUR_PROJECT_NAME\src /s 这是Windows版本的副本，根据您自己的操作系统进行更改。

Answer 18

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

为我解决了。

Answer 19

我从2天开始面临同样的问题。

ng -v :6.0.8
node -v :8.11.2
npm -v :6.1.0

确保您位于安装angular.json的文件夹中。进入并键入ng serve。如果问题仍然存在，那么您只在node_modules中安装了依赖项。键入以下内容，它将起作用：

npm i --only=dev

Answer 20

你npm版本是旧的，尝试运行以下命令：

npm i npm@latest -g

Answer 21

简单解决方案

点击下方仅表示修复此错误

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

Answer 22

角度6及以上

我的工作解决方案是

npm update

npm install

最后

ng update

Answer 23

需要显式获取devDependencies。

npm update

Answer 24

如果以下命令不起作用，

npm i --only=dev

然后移动到项目文件夹并运行此命令：

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

Answer 25

npm install --save @angular-devkit/build-angular 只需键入npm install并运行。然后项目将运行没有错误。或者你可以使用npm install

Answer 26

所有上述答案都是正确的，但它们对我不起作用。我能够完成这项工作的唯一方法是按照步骤/命令：

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

Answer 27

一分钟前我就遇到了同样的问题。我的项目是使用v 1.6.0 of angular-cli生成的。

npm uninstall -g @angular/[email protected]
npm cache clean --force
npm install -g @angular/cli@latest
npm install node-sass -g
ng new MY_PROJECT_NAME
cp -r from_my_old_project to_new_MY_PROJECT_NAME

我希望我的帮助是有效的ツ

Answer 28

试试这个吧。

1. npm update -g @angular/cli

2. editing my package.json changing the line
    "@angular/cli": "1.6.0",
      to
    "@angular/cli": "^1.6.0",

3. npm update

运行

npm install

npm update

if it's shows something like this. 

修复它们，或npm audit fix了解详情

去做！