我们正在使用模块联合来创建Web应用程序。我们面临着加载同一应用程序的不同版本的问题。
我们正在使用Promise动态远程加载同一应用程序的不同版本。https://webpack.js.org/concepts/module-federation/#promise-based-dynamic-remotes
下面是我们当前的主应用程序的webpack配置

const HtmlWebpackPlugin = require('html-webpack-plugin');
const { ModuleFederationPlugin } = require('webpack').container;
const ExternalTemplateRemotesPlugin = require('external-remotes-plugin');
const path = require('path');
const packageJsonDeps = require('./package.json').dependencies;
module.exports = {
  entry: './src/index',
  mode: 'development',
  devServer: {
    static: path.join(__dirname, 'dist'),
    port: 3001,
  },
  output: {
    publicPath: 'auto',
  },
  module: {
    rules: [
      {
        test: /\.jsx?$/,
        loader: 'babel-loader',
        exclude: /node_modules/,
        options: {
          presets: ['@babel/preset-react'],
        },
      },
    ],
  },
  plugins: [
    new ModuleFederationPlugin({
      name: 'app1',
      remotes: {
        app2: 'app2@[app2Url]/remoteEntry.js',
        app3: 'app3@[app3Url]/remoteEntry.js',
      },
      shared: {
        react: {
          singleton: true,
          eager: true,
          requiredVersion: packageJsonDeps['react'],
        },
        'react-dom': {
          singleton: true,
          eager: true,
          requiredVersion: packageJsonDeps['react'],
        },
      },
    }),
    new ExternalTemplateRemotesPlugin(),
    new HtmlWebpackPlugin({
      template: './public/index.html',
    }),
  ],
};

在这种情况下，app 2Url和app 3Url指向同一应用程序的不同版本。
下面是提供程序应用程序的webpack配置。

const HtmlWebpackPlugin = require('html-webpack-plugin');
const { ModuleFederationPlugin } = require('webpack').container;
const path = require('path');
const packageJsonDeps = require('./package.json').dependencies;

module.exports = {
  entry: './src/index',
  mode: 'development',
  devServer: {
    static: path.join(__dirname, 'dist'),
    port: 3003,
  },
  output: {
    publicPath: 'auto',
  },
  module: {
    rules: [
      {
        test: /\.jsx?$/,
        loader: 'babel-loader',
        exclude: /node_modules/,
        options: {
          presets: ['@babel/preset-react'],
        },
      },
    ],
  },
  plugins: [
    // To learn more about the usage of this plugin, please visit https://webpack.js.org/plugins/module-federation-plugin/
    new ModuleFederationPlugin({
      name: 'app2',
      filename: 'remoteEntry.js',
      exposes: {
        './App': './src/App',
      },
      shared: {
        react: {
          singleton: true,
          eager: true,
          requiredVersion: packageJsonDeps['react'],
        },
        'react-dom': {
          singleton: true,
          eager: true,
          requiredVersion: packageJsonDeps['react'],
        },
      },
    }),
    new HtmlWebpackPlugin({
      template: './public/index.html',
    }),
  ],
};

用例：-我们正在做实验性的角色的功能，由于我们要发布2个不同版本的远程输入，并使用我们的实验工具，我们将启用功能的少数用户。
我们得到下面的错误，而加载同一应用程序的不同版本
加载脚本失败。（missing：http：//localhost：3003/remoteEntry.js）while loading“./App”from webpack/container/reference/app3 ScriptExternalLoadError：加载脚本失败。