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Question

我正在使用AngularMaterial和FlexLayout在Angular中实现示例应用程序。

我已经成功安装并实现了 Angular Material Components。我还使用以下命令安装了 Flex

npm install @angular/flex-layout --save

但是当我运行我的应用程序时，我在我的 Eclipse 终端中收到以下警告消息，如下所示

而且我的控制台中也出现以下错误。

下面显示的是 package.json 文件

package.json：

{
  "name": "angular-material-demo",
  "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": "^5.0.0",
    "@angular/cdk": "^5.0.3",
    "@angular/common": "^5.0.0",
    "@angular/compiler": "^5.0.0",
    "@angular/core": "^5.0.0",
    "@angular/flex-layout": "^6.0.0-beta.16",
    "@angular/forms": "^5.0.0",
    "@angular/http": "^5.0.0",
    "@angular/material": "^5.0.3",
    "@angular/platform-browser": "^5.0.0",
    "@angular/platform-browser-dynamic": "^5.0.0",
    "@angular/router": "^5.0.0",
    "@types/jwt-decode": "^2.2.1",
    "core-js": "^2.4.1",
    "font-awesome": "^4.6.3",
    "hammerjs": "^2.0.8",
    "jwt-decode": "^2.2.0",
    "primeng": "^2.0.5",
    "rxjs": "^5.5.2",
    "web-animations-js": "^2.3.1",
    "zone.js": "^0.8.14"
  },
  "devDependencies": {
    "@angular/cli": "1.6.0",
    "@angular/compiler-cli": "^5.0.0",
    "@angular/language-service": "^5.0.0",
    "@types/jasmine": "~2.5.53",
    "@types/jasminewd2": "~2.0.2",
    "@types/node": "~6.0.60",
    "angular-ide": "^0.9.38",
    "codelyzer": "^4.0.1",
    "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": "~5.1.2",
    "ts-node": "~3.2.0",
    "tslint": "~5.7.0",
    "typescript": "~2.4.2"
  }
}

我也尝试执行以下步骤。

Edited package.json: Had to change my version for @angular/compiler-cli. In my case I had to bring it back to 5.2.0, as it somehow got to 5.2.10.

Deleted the node_modules directory.

Ran: npm install

Installed: npm install @angular/flex-layout.

但是我又遇到了不同的错误。"@angular/flex-layout": "^6.0.0-beta.16"我还尝试在 package.json 文件中将flex 的版本从 更改为"@angular/flex-layout": "^2.0.0-beta.12"，但我仍然收到这些错误。

谁能帮我解决这个问题...？

标签： angularangular-materialangular-flex-layout

Answer 1

您的问题是由旧版本的 npm 引起的。要检查您的版本，请使用：

npm -v

使用 apt install 安装了一个非常旧的 npm 版本（3.5.2）。通过以下方式升级到最新版本：

sudo npm install -g npm

再次检查您的版本，您可能需要打开终端才能刷新。截至 2018 年 7 月 4 日，最新的 npm 为 6.1.0。清除 node_modules 文件夹并重新下载模块：

rm -rf ./node_modules
npm install