<%% icon_sizes = Rails.configuration.serviceworker.icon_sizes %> {

"name": "My Progressive Rails App",
"short_name": "Progressive",
"start_url": "/",
"icons": [
<%% icon_sizes.map { |s| "#{s}x#{s}" }.each.with_index do |dim, i| %>
  {
    "src": "<%%= image_path "serviceworker-rails/heart-#{dim}.png" %>",
    "sizes": "<%%= dim %>",
    "type": "image/png"
  }<%%= i == (icon_sizes.length - 1) ? '' : ',' %>
<%% end %>
],
"theme_color": "#000000",
"background_color": "#FFFFFF",
"display": "fullscreen",
"orientation": "portrait"

}