angular - 找不到模块 Angular/动画

Question

我在 angular2 中使用 webpack，当我尝试运行我的应用程序时，我收到一条错误消息

Cannot find module "@angular/animations"

package.json

{
  "name": "angular-quickstart",
  "version": "1.0.0",
  "description": "QuickStart package.json from the documentation, supplemented with testing support",
  "scripts": {
    "start": "tsc && concurrently \"tsc -w\" \"lite-server\" ",
    "e2e": "tsc && concurrently \"http-server -s\" \"protractor protractor.config.js\" --kill-others --success first",
    "lint": "tslint ./app/**/*.ts -t verbose",
    "lite": "lite-server",
    "pree2e": "webdriver-manager update",
    "test": "tsc && concurrently \"tsc -w\" \"karma start karma.conf.js\"",
    "test-once": "tsc && karma start karma.conf.js --single-run",
    "tsc": "tsc",
    "tsc:w": "tsc -w"
  },
  "keywords": [],
  "author": "",
  "license": "MIT",
  "dependencies": {
    "@angular/common": "~2.4.0",
    "@angular/compiler": "~2.4.0",
    "@angular/core": "~2.4.0",
    "@angular/forms": "~2.4.0",
    "@angular/http": "~2.4.0",
    "@angular/platform-browser": "~2.4.0",
    "@angular/platform-browser-dynamic": "~2.4.0",
    "@angular/router": "~3.4.0",
    "angular-in-memory-web-api": "~0.2.4",
    "core-js": "^2.4.1",
    "rxjs": "5.0.1",
    "systemjs": "0.19.40",
    "zone.js": "^0.7.4"
  },
  "devDependencies": {
    "awesome-typescript-loader": "^3.1.2",
    "canonical-path": "0.0.2",
    "concurrently": "^3.1.0",
    "html-webpack-plugin": "^2.28.0",
    "http-server": "^0.9.0",
    "karma": "^1.3.0",
    "karma-chrome-launcher": "^2.0.0",
    "karma-cli": "^1.0.1",
    "karma-jasmine-html-reporter": "^0.2.2",
    "lite-server": "^2.2.2",
    "lodash": "^4.16.4",
    "primeng": "^4.0.0-rc.1",
    "protractor": "~4.0.14",
    "reflect-metadata": "^0.1.10",
    "rimraf": "^2.5.4",
    "tslint": "^3.15.1",
    "typescript": "~2.0.10",
    "typings": "^2.1.0",
    "webpack": "^2.2.1"
  },
  "repository": {},
  "main": "index.js"
}

我的 webpack.config.js 文件是

var htmlWebPack = require('html-webpack-plugin');

module.exports = {
    entry: "./app/main.ts",
    output: {
        path: 'dist',
        filename: "bundle.js"
    },
    module: {
        loaders: [
          {
              test: /\.tsx?$/,
              loader: 'awesome-typescript-loader'
          }
        ]
    },
    plugins: [
    new htmlWebPack({
        template: './index.html'
    })
    ]
};

当我运行 npm start 之类的命令时，出现上述错误。

我什至尝试使用此命令安装 angular-animate

npm install angular-animate

这是我得到的错误信息

我还尝试用命令卸载angular-animate

npm uninstall angular-animate

但这对我没有帮助。

Answer 1

执行以下步骤使其工作:

1. npm install @angular/animations@latest --save

2. 从根 NgModule 中的“@angular/platform-b​​rowser/animations”导入“BrowserAnimationsModule”(否则，您的代码将编译并运行，但动画会触发错误)

3. 在您的组件中，像这样从新包中导入 - "import { trigger, state, style, transition, animate } from '@angular/animations'; "

这对我有用。