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

Question

我已经使用 ng new 创建了一个新应用程序，但是当我尝试配置一个模块以使用延迟加载进行加载时，我总是收到找不到该模块的错误消息。

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>

我确定我遗漏了一些愚蠢的东西，但我尝试了各种选择，但到目前为止没有任何效果。根据我的配置，我是否遗漏了什么？

提前致谢，斯蒂芬

Answer 1

RC7 中不再存在该问题。

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

会起作用。

您使用的机制仍然是基于 systemjs 的。我无法使用 "path#class" 语法让它与 webpack 一起工作。所以我们直接 require 模块：

首先我们需要 es6-promise-loader:

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

然后像这样定义你的路线：

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

es6-promise-loader 将上面的替换为：

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

这是使用 webpack 加载模块的正确方法，但放入每个路由都很麻烦。

Answer 2

使用RC7，您可以进行如下操作：

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

别忘了“#”

然后杀死 ng serve 并重新启动它

它将与 angular-cli@webpack

一起工作

P.S：angular 约定是在延迟加载的文件夹前加上 (+)，例如+家/

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

Lazy loading in Angular2 RC7 and angular-cli webpack

typescript

webpack

angular2-routing

angular-cli

angular

package.json

app.routing.ts:

app.module.ts

app.component.ts

app.component.html