Pre-flight checklist

• I have read the contribution documentation for this project.
• I agree to follow the code of conduct that this project uses.
• I have searched the issue tracker for a feature request that matches the one I want to file, without success.

Problem description

When running npm start in a just-created project, I saw:

Proposed solution

Try other ports when port 9000 is already used.

Alternatives considered

• Not trying out other ports: status quo, 0 development required, but 0 support for other ports different than 9000.

Additional information

Please.