For an example implementation of using different React versions together with Module Federation, check out the runtime plugin folder runtime-plugins/multiple-react-versions.

This example demos host and remote applications running in isolation with two different React versions and no shared libraries

• app1 is the host application using one version of React and ReactDOM.
• app2 is the guest application using a different version of React and ReactDOM. It exposes an injector function which lets the host application (app1) import it and inject it into a div element.

Run pnpm run start. This will build and serve both app1 and app2 on ports 3001 and 3002 respectively.

• localhost:3001 (HOST)
• localhost:3002 (STANDALONE REMOTE)

To run tests in interactive mode, run npm run cypress:debug from the root directory of the project. It will open Cypress Test Runner and allow to run tests in interactive mode. More info about "How to run tests"

To build app and run test in headless mode, run yarn e2e:ci. It will build app and run tests for this workspace in headless mode. If tets failed cypress will create cypress directory in sample root folder with screenshots and videos.

"Best Practices, Rules amd more interesting information here