app-frontend-system-migration

Migrating a Backstage app to the new frontend system involves transitioning from the old setup to an extension-based architecture. This process moves your app package from @backstage/app-defaults to @backstage/frontend-defaults, enabling new features and improvements.

Hybrid mode migration in Backstage is a gradual transition approach that uses compatibility helpers to move apps to the new frontend system. It allows you to migrate components incrementally without breaking existing functionality during the transition period.

Yes, you need @backstage/frontend-defaults along with @backstage/plugin-app-react and @backstage/plugin-app-api to fully support the new extension-based frontend system. These dependencies provide the necessary APIs and tools for theme and feature management.

Feature discovery in the Backstage extension-based system automatically discovers and installs plugins from your dependencies without requiring manual imports. This simplifies plugin management by removing the need to manually wire each plugin into the application configuration.

Yes, you can manage Backstage APIs and themes when migrating to the new frontend system. The migration provides specific tools for handling API and theme management, ensuring your custom configurations remain compatible within the extension-based architecture.

Migrating Backstage to an extension-based frontend requires the full @backstage/frontend-defaults dependency stack and may need hybrid mode for gradual transitions. Complex custom configurations might require manual adjustments during the migration process.