Examine source code of NebulaAdblocker

{
  "manifest_version": 3,
  "name": "NebulaAdblocker",
  "version": "2.0.2",
  "description": "Bloqueador universal de anuncios para Chrome y Firefox (Desktop + Android).",
  "icons": {
    "128": "icons/icon128.png"
  },
  "permissions": [
    "storage",
    "webRequest",
    "webRequestBlocking",
    "declarativeNetRequest",
    "alarms",
    "tabs"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "nebula@adblocker",
      "strict_min_version": "109.0"
    }
  }
}