在Angular2 RC7和angular-cli webpack中的延迟加载

Question

我使用ng new创建了一个新的应用程序，但是当我尝试配置一个模块使用延迟加载加载时，我一直得到一个错误，该模块找不到。

EXCEPTION: Uncaught (in promise): Error: Cannot find module 'app/home/home.module'

package.json

"dependencies": {
    "@angular/common": "2.0.0-rc.7",
    "@angular/compiler": "2.0.0-rc.7",
    "@angular/core": "2.0.0-rc.7",
    "@angular/forms": "2.0.0-rc.7",
    "@angular/http": "2.0.0-rc.7",
    "@angular/platform-browser": "2.0.0-rc.7",
    "@angular/platform-browser-dynamic": "2.0.0-rc.7",
    "@angular/router": "3.0.0-rc.3",
    "core-js": "^2.4.1",
    "rxjs": "5.0.0-beta.12",
    "ts-helpers": "^1.1.1",
    "zone.js": "^0.6.21"
  },
  "devDependencies": {
    "@types/jasmine": "^2.2.30",
    "angular-cli": "1.0.0-beta.11-webpack.9-4",
    "codelyzer": "~0.0.26",
    "jasmine-core": "2.4.1",
    "jasmine-spec-reporter": "2.5.0",
    "karma": "1.2.0",
    "karma-chrome-launcher": "^2.0.0",
    "karma-cli": "^1.0.1",
    "karma-jasmine": "^1.0.2",
    "karma-remap-istanbul": "^0.2.1",
    "protractor": "4.0.5",
    "ts-node": "1.2.1",
    "tslint": "3.13.0",
    "typescript": "2.0.2"
  }

• angular2 RC7
• angular-cli: 1.0.0-beta.11-webpack.9-4
• 节点:6.5.0
• os: win32 x64

app.routing.ts:

import { ModuleWithProviders } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';
const appRoutes: Routes = [{
    path: '',
    redirectTo: 'home',
    pathMatch: 'full'
},
{
    path: `home`,
    loadChildren: `app/home/home.module`
}];
export const routing: ModuleWithProviders = RouterModule.forRoot(appRoutes);

app.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { HttpModule } from '@angular/http';
import { AppComponent } from './app.component';
import { routing } from './app.routing';
@NgModule({
  declarations: [
     AppComponent
  ],
  imports: [
    BrowserModule,
    FormsModule,
    HttpModule,
    routing
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

app.component.ts

import { Component } from '@angular/core';
@Component({
  selector: 'app-root',
  templateUrl: 'app.component.html',
  styleUrls: ['app.component.css']
})
export class AppComponent {
  title = 'app works!';
}

app.component.html

<router-outlet></router-outlet>

我肯定我错过了一些愚蠢的东西，但我尝试了各种各样的选择，到目前为止都没有效果。根据我的配置，我遗漏了什么吗?

提前感谢，斯蒂芬。

Answer 1

使用RC7，您可以执行以下操作:

const appRoutes: Routes = [
  {
    path: 'home',
    loadChildren: 'app/home/home.module#HomeModule',
  }
];

别忘了"#"

然后终止ng server并重新启动它

可以使用angular-cli@webpack

p。S: angular的惯例是在惰性加载文件夹前加上一个(+)，例如+home/

Answer 2

这个问题在RC7中已经不存在了

{path:"lazy", loadChildren: 'app/path/to/module#Class'}

。

---

你使用的机制仍然是基于systemjs的。我不能让它在webpack中使用"path#class"语法。因此，我们直接对模块进行require:

首先需要es6-promise-loader:

npm i --save-dev es6-promise-loader

然后定义你的路由:

{path:"lazy", loadChildren: () => require('es6-promise!./path/to/module')('ClassName')}

es6-promise-loader将上面的内容替换为:

loadChildren: () => new Promise(function (resolve) {
        require.ensure([], function (require) {
          resolve(require('./path/to/module')['ClassName']));
        });
      });

，这是用webpack加载模块的正确方式，但要放到每个路由中很麻烦。