All packages in the @keystone-alpha namespace are now available in the @keystonejs namespace, starting at version 5.0.0. To upgrade, update package.json to point to "@keystonejs/field-views-loader": "^5.0.0" and update any require/import statements in your code.
This packages contains a webpack loader which makes the field type UI components available to the Admin UI.
This package is an internal helper package used by Keystone. It contains a webpack loader which makes the field type UI components available to the Admin UI.
You should probably not use this directly in your Keystone projects.