此版本的 CLI 仅与 Angular 版本 5.0.0 或更高版本兼容错误

我已经有 Angular 项目在 4 版本中运行。在安装新项目时，不幸的是我安装了 6 版本的 Angular cli。在以 4 版本运行的旧项目中运行 ngserve 命令时，这会引发错误“您的全局 Angular CLI 版本大于本地版本”。我再次尝试更新我的 anglar 本地版本。但现在我遇到了错误此版本的 CLI 仅与 Angular 版本 5.0.0 或更高版本兼容。我的 package.json 如下：

 {
  "name": "authority-client",
  "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-devkit/core": "^0.7.2",
    "@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",
    "@types/file-saver": "^1.3.0",
    "angular2-cookie": "^1.2.6",
    "core-js": "^2.4.1",
    "file-saver": "^1.3.8",
    "ng2-toastr": "^4.1.2",
    "ngx-bootstrap": "^2.0.1",
    "ngx-loading": "^1.0.14",
    "npm": "^5.5.1",
    "postcss-loader": "^2.0.9",
    "rxjs": "^5.4.2",
    "sweetalert2": "^7.22.0",
    "zone.js": "^0.8.14"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.7.0",
    "@angular/cli": "^6.1.5",
    "@angular/compiler-cli": "^4.2.4",
    "@angular/language-service": "^4.2.4",
    "@ngtools/webpack": "^6.1.5",
    "@types/jasmine": "~2.5.53",
    "@types/jasminewd2": "~2.0.2",
    "@types/node": "~6.0.60",
    "angular-ide": "^0.9.44",
    "codelyzer": "~3.1.1",
    "jasmine-core": "~2.6.2",
    "jasmine-spec-reporter": "~4.1.0",
    "karma": "~1.7.0",
    "karma-chrome-launcher": "~2.1.1",
    "karma-cli": "~1.0.1",
    "karma-coverage-istanbul-reporter": "^1.2.1",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "^5.4.0",
    "ts-node": "~3.2.0",
    "tslint": "~5.3.2",
    "typescript": "~2.3.3"
  }
}

有人可以修复这个错误吗？我过去两天一直在尝试，但找不到任何合适的解决方案。

我想这就是你要找的。 其他答案只是忘记包括-g范围。

npm install -g @angular/[email protected] /cdn-cgi/l/email-protection

这一切都在错误本身中说了。您没有在全球范围内安装它；） 希望这能解决您的问题。

UPDATE:要将 Angular CLI 更新到新版本，您必须更新全局包和项目的本地包。

全球套餐：

npm uninstall -g @angular/cli
npm cache verify // If npm version is < 5 then use `npm cache clean`
npm install -g @angular/cli@latest

本地项目包：

// Use rmdir /S/Q node_modules dist in Windows Command Prompt; 
// Use rm -r -fo node_modules, dist in Windows PowerShell

rm -rf node_modules dist 
npm install --save-dev @angular/cli@latest
npm install

了解更多info https://github.com/angular/angular-cli/blob/master/packages/angular/cli/README.md查看 GitHub 上的自述文件。