Example usage of module federation, which is in beta in webpack 5 as of 2020-07-24.
Further explanations can be found in this blog post.
There's two apps, host and settings in folders of the same name.
Both apps import each other's exposed routes to render a single UI to the user that contains the combined set of routes. Accessing / renders host/src/pages/HomePage.tsx, /settings will render settings/src/pages/SettingsPage.tsx. While both apps are depending on each other, host is considered the master application, as it exposes shared components (like host/src/components/Navigation.tsx or host/src/utils/cookie.ts).
Routing and passing of application configuration occurs in the respective App.tsx. The initial plan was to use shared react context to pass global state from the rendered app to remote apps, but issues (#1, #7) made it simpler to pass shared data as props to rendered components.
settings/src/pages/SettingsPage allows to set the configuration cookie, which can override the default configuration defined in host/src/config.ts.
The webpack.config.js files contain a output.publicPath and use the ModuleFederationPlugin. The application's name is defined with the name property; remote applications are listed in the remotes object; exposed modules in the exposes object; and shared dependencies in shared. To resolve imports to remote applications, remoteEntry.js of all remote applications is loaded from index.html. The initialisation process of federated applications requires the combination of a combination of index.js and bootstrap.js.