Angular 2 Web Worker - UI 未运行

我有一个 angular2 应用程序在网络工作者中运行。从表面上看，一切都按我的预期运行，但 DOM 似乎没有发生任何事情。例如，我在应用程序加载时显示预加载器，但它永远不会被实际应用程序 UI 替换。

<my-app>Loading...</my-app>

当 AppModule 加载时，我的应用程序中没有呈现任何内容...即使我看到所有组件和服务完全按照我在后台工作程序中的预期运行...整个应用程序运行良好 - 只是没有 UI。

import { NgModule } from '@angular/core';
import { HttpModule, XSRFStrategy } from '@angular/http';
import { FormsModule } from '@angular/forms';
import { BrowserModule } from '@angular/platform-browser';
import { WorkerAppModule } from '@angular/platform-webworker';
import { WORKER_APP_LOCATION_PROVIDERS } from '@angular/platform-webworker';

import { AppComponent } from './app.component';
import { NoXSRFStrategy } from './common/backends/XSRFStrategies';

@NgModule({
    imports: [
        BrowserModule,
        HttpModule,
        FormsModule,
        routing,  

        WorkerAppModule         
    ],
    declarations: [
        AppComponent
    ],
    providers: [
        { provide: XSRFStrategy, useClass: NoXSRFStrategy },

        WORKER_APP_LOCATION_PROVIDERS           
    ],
    bootstrap: [AppComponent]
})
export class AppModule {    
    constructor() { }    
}

在我的 main.ts 中

UI_THREAD_CHANNEL = 'UI_THREAD_CHANNEL'
bootstrapWorkerUi('/webworker-loader.js').then((hWnd) => {

                // register methods the WebWorker needs to run on the UI thread.
                let brokerFactory: ServiceMessageBrokerFactory = hWnd.injector.get(ServiceMessageBrokerFactory);
                let broker = brokerFactory.createMessageBroker(UI_THREAD_CHANNEL, false);

                broker.registerMethod('redirect', [PRIMITIVE], (href: string) => {
                    window.location.href = href;
                });
            });

在我的 webworker-main.ts 中

import { platformWorkerAppDynamic } from '@angular/platform-webworker-dynamic';
import { AppModule } from './app.module';
const platform = platformWorkerAppDynamic();
platform.bootstrapModule(AppModule);

当我不使用网络工作者时，一切都会按我的预期进行。我相信我真的很接近完成这项工作......只是找不到我所缺少的东西。我怀疑有一些东西我没有加载 - 或者有一些我不知道与路由相关的东西。

弄清楚了。

问题是，必须向 main.ts 中的 bootstrapWorkerUi 提供额外的提供程序 - 特别是来自 @angular/platform-webworker 的 WORKER_UI_LOCATION_PROVIDERS 。

新的（工作的）main.ts

import { WORKER_UI_LOCATION_PROVIDERS, bootstrapWorkerUi, 
ServiceMessageBrokerFactory } from '@angular/platform-webworker';

UI_THREAD_CHANNEL = 'UI_THREAD_CHANNEL'
bootstrapWorkerUi('/webworker-loader.js', WORKER_UI_LOCATION_PROVIDERS).then((hWnd) => {

    // register methods the WebWorker needs to run on the UI thread.
    let brokerFactory: ServiceMessageBrokerFactory = hWnd.injector.get(ServiceMessageBrokerFactory);
    let broker = brokerFactory.createMessageBroker(UI_THREAD_CHANNEL, false);

    broker.registerMethod('redirect', [PRIMITIVE], (href: string) => {
        window.location.href = href;
    });
});