Examine source code of boxful

{
  "update_url" : "https://clients2.google.com/service/update2/crx" ,
  "manifest_version" : 3 ,
  "name" : "boxful",
  "version" : "1.0.4",
  "description" : "Convierte cualquier página en tu centro de envíos. Crea órdenes en Boxful al instante desde Chrome. 🚀",
  "permissions" : [
    "sidePanel" ,
    "storage" ,
    "activeTab" 
  ],
  "host_permissions" : [
    "<all_urls>" 
  ],
  "background" : {
    "service_worker" : "service-worker-loader.js" ,
    "type" : "module" 
  },
  "action" : {
    "default_title" : "boxful — Crear orden",
    "default_icon" : {
      "16" : "icons/icon16.png",
      "48" : "icons/icon48.png",
      "128" : "icons/icon128.png"
    }
  },
  "side_panel" : {
    "default_path" : "sidepanel.html" 
  },
  "content_scripts" : [
    {
      "js" : [
        "assets/content.ts-CireyFXU.js" 
      ],
      "matches" : [
        "<all_urls>" 
      ],
      "run_at" : "document_idle" 
    }
  ],
  "icons" : {
    "16" : "icons/icon16.png",
    "48" : "icons/icon48.png",
    "128" : "icons/icon128.png"
  },
  "web_accessible_resources" : [
    {
      "matches" : [
        "<all_urls>" 
      ],
      "resources" : [
        "assets/content.ts-CireyFXU.js" 
      ],
      "use_dynamic_url" : false 
    }
  ]
}