Examine source code of EV Nautilus Dive Alert

{
  "name": "EV Nautilus Dive Alert",
  "short_name": "NautilusDive",
  "description": "Always know when a dive is happening on the Nautilus",
  "developer": {
    "name": "Martin Giger",
    "url": "https://humanoids.be"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "permissions": [
    "notifications",
    "alarms",
    "storage",
    "menus"
  ],
  "host_permissions": [
    "https://nautiluslive.org/"
  ],
  "action": {
    "default_icon": {
      "32": "icons/ship.svg"
    },
    "default_title": "EV Nautilus"
  },
  "icons": {
    "48": "icons/ship.svg"
  },
  "manifest_version": 3,
  "version": "1.3.5",
  "content_security_policy": {
    "extension_pages": "default-src 'self'; frame-src https://www.youtube-nocookie.com; connect-src https://nautiluslive.org"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "nautilus@humanoids.be",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}