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jmvtrinidadScriptedAlchemyclaude
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error boundary (#4281)
* error boundary * update to MF enhanced to 0.6.8 * Remove medusa examples from repository - Removed medusa-delegate-example directory - Removed medusa-example directory - Removed medusa-nx-native-federation-example directory - Removed modernjs-medusa directory - Updated package.json workspaces to remove medusa references 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <[email protected]> * chore: update dependencies via repotools - Updated module federation packages across all examples - Upgraded @rspack/core from 0.7.5/1.0.8 to 1.4.11 - Ran pnpm install to sync lockfile 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <[email protected]> * chore: locks --------- Co-authored-by: Zack Jackson <[email protected]> Co-authored-by: ScriptedAlchemy <[email protected]> Co-authored-by: Claude <[email protected]>
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‎error-boundary/README.md‎

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# Error Boundary
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This demo boots only app1, app2 remains offline.
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Loading localhost:3001 will render a error message from the runtime plugin as a react module when the container if offline.

‎error-boundary/app1/package.json‎

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{
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"name": "error-boundary_app1",
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"version": "0.0.0",
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"devDependencies": {
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"@babel/core": "7.24.7",
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"@babel/preset-react": "7.24.7",
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"babel-loader": "9.1.3",
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"html-webpack-plugin": "5.6.0",
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"serve": "14.2.3",
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"@rspack/core": "1.4.11",
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"@rspack/cli": "1.4.11",
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"@rspack/dev-server": "1.1.3",
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"webpack": "5.101.0",
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"webpack-cli": "5.1.4",
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"webpack-dev-server": "5.1.0",
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"@module-federation/runtime": "0.17.1",
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"@module-federation/enhanced": "0.17.1"
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},
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"scripts": {
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"start": "rspack serve -c rspack.config.js",
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"build": "rspack build --mode production -c rspack.config.js",
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"legacy:start": "webpack serve --config webpack.config.js",
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"legacy:build": "webpack --config webpack.config.js --mode production",
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"serve": "serve dist -p 3001",
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"clean": "rm -rf dist"
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},
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"dependencies": {
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"react": "^17.0.2",
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"react-dom": "^17.0.2",
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"lodash": "^4.17.21"
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}
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}

‎error-boundary/app1/public/index.html‎

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<!DOCTYPE html>
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<html>
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<head> </head>
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<body>
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<div id="root"></div>
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</body>
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</html>

‎error-boundary/app1/rspack.config.js‎

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const {
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HtmlRspackPlugin,
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container: { ModuleFederationPlugin },
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} = require('@rspack/core');
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const path = require('path');
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// adds all your dependencies as shared modules
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// version is inferred from package.json in the dependencies
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// requiredVersion is used from your package.json
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// dependencies will automatically use the highest available package
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// in the federated app, based on version requirement in package.json
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// multiple different versions might coexist in the federated app
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// Note that this will not affect nested paths like "lodash/pluck"
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// Note that this will disable some optimization on these packages
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// with might lead the bundle size problems
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const deps = require('./package.json').dependencies;
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module.exports = {
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entry: './src/index',
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mode: 'development',
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devServer: {
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static: {
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directory: path.join(__dirname, 'dist'),
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},
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hot: true,
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port: 3001,
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liveReload: true,
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},
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target: 'web',
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output: {
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publicPath: 'auto',
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},
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module: {
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rules: [
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{
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test: /\.js$/,
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include: path.resolve(__dirname, 'src'),
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use: {
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loader: 'builtin:swc-loader',
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options: {
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jsc: {
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parser: {
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syntax: 'ecmascript',
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jsx: true,
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},
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transform: {
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react: {
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runtime: 'automatic',
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},
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},
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},
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},
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},
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},
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{
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test: /\.ts$/,
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use: {
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loader: 'builtin:swc-loader',
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options: {
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jsc: {
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parser: {
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syntax: 'typescript',
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jsx: true,
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},
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transform: {
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react: {
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runtime: 'automatic',
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},
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},
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},
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},
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},
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},
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],
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},
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plugins: [
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new ModuleFederationPlugin({
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name: 'app1',
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filename: 'remoteEntry.js',
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remotes: {
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app2: 'app2@http://localhost:3002/remoteEntry.js',
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},
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exposes: {
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'./Button': './src/Button',
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},
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shared: {
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...deps,
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react: {
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singleton: true,
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},
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'react-dom': {
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singleton: true,
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},
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lodash: {},
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},
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}),
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new HtmlRspackPlugin({
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template: './public/index.html',
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}),
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],
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};

‎error-boundary/app1/src/App.js‎

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import React from 'react';
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import ReactDOM from 'react-dom';
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import lodash from 'lodash';
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import LocalButton from './Button';
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const RemoteButtonLazy = React.lazy(() => import('app2/Button'));
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// A function to generate a color from a string
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const getColorFromString = str => {
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// Prime numbers used for generating a hash
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let primes = [1, 2, 3, 5, 7, 11, 13, 17, 19, 23];
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let hash = 0;
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// Generate a hash from the string
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for (let i = 0; i < str.length; i++) {
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hash += str.charCodeAt(i) * primes[i % primes.length];
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}
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// Convert the hash to a color
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let color = '#';
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for (let i = 0; i < 3; i++) {
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const value = (hash >> (i * 8)) & 0xff;
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color += ('00' + value.toString(16)).substr(-2);
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}
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return color;
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};
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// The main App component
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const App = () => (
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<div>
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<h1>Offline Remote</h1>
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<h2>Remotes currently in use</h2>
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{/* Display the names of the remotes loaded by the CustomPlugin */}
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{__FEDERATION__.__INSTANCES__.map(inst => (
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<span
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style={{
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padding: 10,
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color: '#fff',
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background: getColorFromString(inst.name.split().reverse().join('')),
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}}
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key={inst.name}
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>
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{inst.name}
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</span>
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))}
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<p>
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Click The second button. This will cause the <i>pick-remote.ts</i> to load remoteEntry urls
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from a mock api call.
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</p>
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{/* LocalButton is a button component from the local app */}
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<LocalButton />
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{/* RemoteButton is a button component loaded from a remote app */}
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<ErrorBoundary>
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<React.Suspense fallback="Loading Button">
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<RemoteButtonLazy />
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</React.Suspense>
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</ErrorBoundary>
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{/* The Reset button clears the 'button' item from localStorage */}
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<button
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onClick={() => {
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localStorage.clear('button');
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window.location.reload();
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}}
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>
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Reset{' '}
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</button>
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</div>
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);
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export default App;
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class ErrorBoundary extends React.Component {
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state = {
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hasError: false,
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};
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componentDidCatch(error, errorInfo) {
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console.error(error, errorInfo);
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this.setState({ hasError: true });
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}
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render() {
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const { children } = this.props;
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if (this.state.hasError) {
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return (
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<div>
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<h1>Something went wrong</h1>
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<p>Try refreshing the page.</p>
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</div>
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);
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}
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return children;
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}
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}

‎error-boundary/app1/src/Button.js‎

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import React from 'react';
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const style = {
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background: '#800',
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color: '#fff',
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padding: 12,
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};
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const Button = () => <button style={style}>App 1 Button</button>;
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export default Button;

‎error-boundary/app1/src/bootstrap.js‎

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import App from './App';
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import React from 'react';
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import ReactDOM from 'react-dom';
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ReactDOM.render(<App />, document.getElementById('root'));

‎error-boundary/app1/src/index.js‎

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import('./bootstrap');

‎error-boundary/app1/webpack.config.js‎

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const HtmlWebpackPlugin = require('html-webpack-plugin');
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const { ModuleFederationPlugin } = require('@module-federation/enhanced');
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const path = require('path');
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// adds all your dependencies as shared modules
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// version is inferred from package.json in the dependencies
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// requiredVersion is used from your package.json
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// dependencies will automatically use the highest available package
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// in the federated app, based on version requirement in package.json
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// multiple different versions might coexist in the federated app
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// Note that this will not affect nested paths like "lodash/pluck"
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// Note that this will disable some optimization on these packages
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// with might lead the bundle size problems
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const deps = require('./package.json').dependencies;
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module.exports = {
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entry: './src/index',
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cache: false,
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mode: 'development',
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devServer: {
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static: {
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directory: path.join(__dirname, 'dist'),
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},
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port: 3001,
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},
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target: 'web',
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output: {
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publicPath: 'auto',
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},
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module: {
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rules: [
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{
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test: /\.jsx?$/,
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loader: 'babel-loader',
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exclude: /node_modules/,
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options: {
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presets: ['@babel/preset-react'],
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},
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},
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],
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},
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plugins: [
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new ModuleFederationPlugin({
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name: 'app1',
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filename: 'remoteEntry.js',
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remotes: {
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app2: 'app2@http://localhost:3002/remoteEntry.js',
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},
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exposes: {
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'./Button': './src/Button',
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},
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shared: {
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...deps,
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react: {
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singleton: true,
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},
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'react-dom': {
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singleton: true,
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},
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},
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}),
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new HtmlWebpackPlugin({
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template: './public/index.html',
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}),
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],
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};

‎error-boundary/app2/package.json‎

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{
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"name": "error-boundary_app2",
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"version": "0.0.0",
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"devDependencies": {
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"@babel/core": "7.24.7",
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"@babel/preset-react": "7.24.7",
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"babel-loader": "9.1.3",
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"html-webpack-plugin": "5.6.0",
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"serve": "14.2.3",
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"@rspack/core": "1.4.11",
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"@rspack/cli": "1.4.11",
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"@rspack/dev-server": "1.1.3",
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"webpack": "5.101.0",
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"webpack-cli": "5.1.4",
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"webpack-dev-server": "5.0.4",
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"@module-federation/runtime": "0.17.1",
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"@module-federation/enhanced": "0.17.1"
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},
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"scripts": {
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"start": "rspack serve -c rspack.config.js",
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"build": "rspack build --mode production -c rspack.config.js",
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"legacy:start": "webpack serve --config webpack.config.js",
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"legacy:build": "webpack --config webpack.config.js --mode production",
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"serve": "serve dist -p 3002",
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"clean": "rm -rf dist"
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},
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"dependencies": {
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"react": "^16.13.0",
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"react-dom": "^16.13.0",
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"lodash": "^3.10.1"
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}
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}

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