- hidden = local_assigns.fetch(:hidden, false)
- render_error = viewer.render_error
- load_asynchronously = local_assigns.fetch(:load_asynchronously, viewer.server_side?) && render_error.nil?

- url = url_for(params.merge(viewer: viewer.type, format: :json)) if load_asynchronously
.blob-viewer{ data: { type: viewer.type, url: url }, class: ('hidden' if hidden) }
  - if load_asynchronously
    .text-center.prepend-top-default.append-bottom-default
      = icon('spinner spin 2x', 'aria-hidden' => 'true', 'aria-label' => 'Loading content')
  - elsif render_error
    = render 'projects/blob/render_error', viewer: viewer
  - else
    - viewer.prepare!
    = render viewer.partial_path, viewer: viewer