Question

创建新组件时我现在遇到错误

ng g componenet testComponent

错误是

        Cannot read property 'NullLogger' of undefined
TypeError: Cannot read property 'NullLogger' of undefined
    at SchematicEngine.createContext (d:\Nodejs Workarea\sherif negm\blur\back-end\angular\node_modules\@angular-devkit\schematics\src\engine\engine.js:75:39)
    at SchematicImpl.call (d:\Nodejs Workarea\sherif negm\blur\back-end\angular\node_modules\@angular-devkit\schematics\src\engine\schematic.js:35:38)
    at Promise (d:\Nodejs Workarea\sherif negm\blur\back-end\angular\node_modules\@angular\cli\tasks\schematic-run.js:77:23)
    at new Promise (<anonymous>)
    at Class.run (d:\Nodejs Workarea\sherif negm\blur\back-end\angular\node_modules\@angular\cli\tasks\schematic-run.js:76:16)
    at Class.run (d:\Nodejs Workarea\sherif negm\blur\back-end\angular\node_modules\@angular\cli\commands\generate.js:149:33)
    at resolve (d:\Nodejs Workarea\sherif negm\blur\back-end\angular\node_modules\@angular\cli\ember-cli\lib\models\command.js:261:20)
    at new Promise (<anonymous>)
    at Class.validateAndRun (d:\Nodejs Workarea\sherif negm\blur\back-end\angular\node_modules\@angular\cli\ember-cli\lib\models\command.js:240:12)
    at Promise.resolve.then.then (d:\Nodejs Workarea\sherif negm\blur\back-end\angular\node_modules\@angular\cli\ember-cli\lib\cli\cli.js:140:24)

角度-g -v是

    _                      _                 ____ _     ___
   / \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|
  / △ \ | '_ \ / _` | | | | |/ _` | '__|   | |   | |    | |
 / ___ \| | | | (_| | |_| | | (_| | |      | |___| |___ | |
/_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|
               |___/
@angular/cli: 1.4.5
node: 10.8.0
os: win32 x64
@angular/animations: 4.4.7
@angular/common: 4.4.7
@angular/compiler: 4.4.7
@angular/core: 4.4.7
@angular/forms: 4.4.7
@angular/http: 4.4.7
@angular/platform-browser: 4.4.7
@angular/platform-browser-dynamic: 4.4.7
@angular/router: 4.4.7
@angular/cli: 1.4.5
@angular/compiler-cli: 4.4.7
@angular/language-service: 4.4.7
typescript: 2.3.4

我项目中的依赖项是

"dependencies": {
    "@angular/animations": "^4.2.4",
    "@angular/common": "^4.2.4",
    "@angular/compiler": "^4.2.4",
    "@angular/core": "^4.2.4",
    "@angular/forms": "^4.2.4",
    "@angular/http": "^4.2.4",
    "@angular/platform-browser": "^4.2.4",
    "@angular/platform-browser-dynamic": "^4.2.4",
    "@angular/router": "^4.2.4",
    "angular-sortablejs": "^2.5.2",
    "core-js": "^2.4.1",
    "ng2-bearer": "^0.1.28",
    "rxjs": "^5.4.2",
    "sortablejs": "^1.7.0",
    "zone.js": "^0.8.14"
  },

在我将angular更新为6，然后再次降级为以前的版本4之后，此错误正在显示给我。

请不要更新项目的角度。

Answer 1

我已经通过将@ angular / cli的全局升级和项目依赖性升级到@ angular / cli：1.4.10解决了这个问题

Answer 2

以下步骤对我有用，

npm卸载-g @ angular / cli

npm卸载--save-dev @ angular / cli

清除缓存，

npm缓存验证

npm install -g @ angular / cli @ latest

npm install --save-dev @ angular / cli @ latest

创建新组件时未定义的“ NullLogger”

2 个答案: