未加载 Angular2 路由器弃用的依赖项

Question

我最近更新了我的 angular2 版本并遇到了以下问题：

路由器库不再存在，已被 router-deprecated 取代。

我有这个菜单组件：

import { Component }       from '@angular/core';
import { DashboardComponent } from './dashboard.component'
import { RouteConfig, ROUTER_DIRECTIVES, ROUTER_PROVIDERS } from '@angular/router-deprecated';

@Component({
  selector: 'main-menu',
  templateUrl: 'app/views/menu.html',
  directives: [ROUTER_DIRECTIVES],
  providers: [
    ROUTER_PROVIDERS
  ]
})

@RouteConfig([
  {
    path: '/dashboard',
    name: 'Dashboard',
    component: DashboardComponent,
    useAsDefault: true
  }
])

export class MenuComponent {}

当我尝试加载该应用程序时，该应用程序失败了，因为它无法解析已弃用的路由器所需的文件。我收到以下错误：

Image of error

Answer 1

在 Angular2 RC.0 中，您可能需要添加

'@angular/router-deprecated': {
  main: 'index.js',
  defaultExtension: 'js'
},

在 config.js

中的 packages

或者如果你想使用新路由器的话：

'@angular/router': {
  main: 'index.js',
  defaultExtension: 'js'
},

示例 config.js 来自 rc.0 Plunker

(function(global) {

  var ngVer = '@2.0.0-rc.0'; // lock in the angular package version; do not let it float to current!

  //map tells the System loader where to look for things
  var  map = {
    'app':                        'src', // 'dist',
    'rxjs':                       'https://npmcdn.com/rxjs@5.0.0-beta.6',
    'angular2-in-memory-web-api': 'https://npmcdn.com/angular2-in-memory-web-api' // get latest
  };

  //packages tells the System loader how to load when no filename and/or no extension
  var packages = {
    'app':                        { main: 'app.ts',  defaultExtension: 'ts' },
    'rxjs':                       { defaultExtension: 'js' },
    'angular2-in-memory-web-api': { defaultExtension: 'js' },
  };

  var packageNames = [
      '@angular/common',
      '@angular/compiler',
      '@angular/core',
      '@angular/http',
      '@angular/platform-browser',
      '@angular/platform-browser-dynamic',
      '@angular/router-deprecated',
      '@angular/testing',
      '@angular/upgrade',
  ];

  // add map entries for angular packages in the form '@angular/common': 'https://npmcdn.com/@angular/common@0.0.0-3'
  packageNames.forEach(function(pkgName) {
    map[pkgName] = 'https://npmcdn.com/' + pkgName + ngVer;
  });

  // add package entries for angular packages in the form '@angular/common': { main: 'index.js', defaultExtension: 'js' }
  packageNames.forEach(function(pkgName) {
    packages[pkgName] = { main: 'index.js', defaultExtension: 'js' };
  });

  var config = {
    transpiler: 'typescript',
    typescriptOptions: {
      emitDecoratorMetadata: true
    },
    map: map,
    packages: packages
  }

  // filterSystemConfig - index.html's chance to modify config before we register it.
  if (global.filterSystemConfig) { global.filterSystemConfig(config); }

  System.config(config);

})(this);

Answer 2

其实解决方法很简单，我们需要更改 systemjs.config.js 文件。 packages 数组包含 angular 个包的列表，而其中一个是错误的

替换为：'@angular/router'，与此：'@angular/router-已弃用'，

    systemjs.config.js:
...
...
...

        var packageNames = [
            '@angular/common',
            '@angular/compiler',
            '@angular/core',
            '@angular/http',
            '@angular/platform-browser',
            '@angular/platform-browser-dynamic',
            '@angular/router-deprecated',
            '@angular/testing',
            '@angular/upgrade',
          ];

就是这样。

Answer 3

更确切地说，对于 typescript 项目，在 package.json 文件中添加模块依赖项：

dependencies{
    ...
   "@angular/router-deprecated": "2.0.0-rc.1"
}

并且在您的 src/system-config.ts 文件中这一行：

const barrels:string[] = [
     ...
    '@angular/router-deprecated'
];

那么，使用前不要忘记运行 npm i在你的项目中安装这个模块。

未加载 Angular2 路由器弃用的依赖项

Angular2 router-deprecated dependencies not being loaded

angular

angular2-routing