The goal of this ticket is to create migration rules for the renaming of the sized loader classes.

Tasks

• Create a migration rule in our ESLint package that automatically replaces:
  • loader-xs -> spinner-16
  • loader-sm -> spinner-40
• Document the migration rule in the ESLint package
• Add tests for the rule
• Add information on the existing entry that we have an auto-migration in the migration guide
• Replace the class in our own codebase