class ActiveStorage::Variation

def transformer
  if ActiveStorage.variant_processor
    begin
      require "image_processing"
    rescue LoadError
      ActiveSupport::Deprecation.warn <<~WARNING.squish
        Generating image variants will require the image_processing gem in Rails 6.1.
        Please add `gem 'image_processing', '~> 1.2'` to your Gemfile.
      WARNING
      ActiveStorage::Transformers::MiniMagickTransformer.new(transformations)
    else
      ActiveStorage::Transformers::ImageProcessingTransformer.new(transformations)
    end
  else
    ActiveStorage::Transformers::MiniMagickTransformer.new(transformations)
  end
end