angular - 在 Angular 中，使用 WebPack 5 Module Federations，我们如何公开远程使用的 Web Worker？

Question

在我的配置中，我目前正在使用一个 shell 应用程序和一个遥控器，两者都是用 angular 12.2.0 编写的，我遇到了一个我不知道如何解决的问题。

外壳 webpack.config.js

const ModuleFederationPlugin = require("webpack/lib/container/ModuleFederationPlugin");
const mf = require("@angular-architects/module-federation/webpack");
const path = require("path");
const share = mf.share;

const sharedMappings = new mf.SharedMappings();
sharedMappings.register(
  path.join(__dirname, '../../tsconfig.json'),
  ['auth-lib']
);

module.exports = {
  output: {
    uniqueName: "portal",
    publicPath: "auto"
  },
  optimization: {
    runtimeChunk: false
  },
  resolve: {
    alias: {
      ...sharedMappings.getAliases(),
    }
  },
  plugins: [
    new ModuleFederationPlugin({

        // For hosts (please adjust)
        remotes: {
          "myremote": "myremote@http://localhost:4250/remoteEntry.js"
        },

        shared: share({
          "@angular/core": { singleton: true, strictVersion: true, requiredVersion: 'auto' },
          "@angular/common": { singleton: true, strictVersion: true, requiredVersion: 'auto' },
          "@angular/common/http": { singleton: true, strictVersion: true, requiredVersion: 'auto' },
          "@angular/router": { singleton: true, strictVersion: true, requiredVersion: 'auto' },

          ...sharedMappings.getDescriptors()
        })

    }),
    sharedMappings.getPlugin()
  ],
};

远程 webpack.config.js

const ModuleFederationPlugin = require("webpack/lib/container/ModuleFederationPlugin");
const mf = require("@angular-architects/module-federation/webpack");
const path = require("path");
const share = mf.share;

const sharedMappings = new mf.SharedMappings();
sharedMappings.register(
  path.join(__dirname, 'tsconfig.json'),
  [/* mapped paths to share */]
);

module.exports = {
  output: {
    uniqueName: "interviews",
    publicPath: "auto"
  },
  optimization: {
    runtimeChunk: false
  },
  resolve: {
    alias: {
      ...sharedMappings.getAliases(),
    }
  },
  plugins: [
    new ModuleFederationPlugin({

        // For remotes (please adjust)
        name: "myremote",
        filename: "remoteEntry.js",
        exposes: {
            './Module': './src/app/myremote/myremote.module.ts'
        },

        shared: share({
          "@angular/core": { singleton: true, strictVersion: true, requiredVersion: 'auto' },
          "@angular/common": { singleton: true, strictVersion: true, requiredVersion: 'auto' },
          "@angular/common/http": { singleton: true, strictVersion: true, requiredVersion: 'auto' },
          "@angular/router": { singleton: true, strictVersion: true, requiredVersion: 'auto' },

          ...sharedMappings.getDescriptors()
        })

    }),
    sharedMappings.getPlugin()
  ],
};

当我在 shell 应用程序中使用对远程模块的引用时，一切正常，如下所示：

import { NgModule } from '@angular/core';
import { RouterModule, Routes } from '@angular/router';
import { HomeComponent } from './components/home/home.component';

const routes: Routes = [{
  path: '',
  component: HomeComponent,
  pathMatch: 'full'
}, {
  path: 'myremote',
  loadChildren: () => import('myremote/Module').then(m => m.MyRemoteModule)
}];

@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule]
})
export class AppRoutingModule { }

当远程模块的组件在其代码中实例化一个新的 Web Worker 时，就会出现问题，如下所示：

const myWorker = new Worker(
    new URL('../path/to/workers/worker.ts',
    import.meta.url
  ),
  { type: 'module', name: 'my-worker' }
);
// since I'm also using comlink, I also do that, but that's not really relevant here
this.worker = this.createWrapper<WorkerService>(myWorker);

上面的代码，在 Webpack 5 中，已经在我的应用程序中生成了一个名为 my-worker.js 的单独包，它既不是组件的一部分，也不是模块的包。因此，将模块暴露给模块联合，也不会暴露到 remoteEntry.js 以及工作人员的代码。然后尝试使用 shell 应用程序导航到加载我的遥控器的路线，将出错并通知：

错误错误：未捕获（承诺）：SecurityError：无法构造“Worker”：无法从源“http://localhost:5000”访问“http://localhost:4250/my-worker.js”处的脚本。错误：无法构造“Worker”：无法从源“http://localhost:5000”访问“http://localhost:4250/my-worker.js”处的脚本。

所以问题是，如果我想要一个遥控器并公开它的模块以在 shell 应用程序中使用，并且它的一个模块使用 Web Worker，我如何确保由 Webpack 创建的单独的工作包也被公开为了让shell应用程序能够实例化它？

Answer 1