Examine source code of Time Sync - NTP Clock

{
  "manifest_version": 3,
  "name": "Time Sync - NTP Clock",
  "version": "1.0.5",
  "description": "Synchronize and display accurate time from multiple NTP servers. Perfect for time-sensitive tasks.",
  "author": "A.res.t",
  "homepage_url": "https://github.com/RyuJin-other/",
  "browser_specific_settings": {
    "gecko": {
      "id": "{f9a38c21-7b4d-4e88-912a-c3d5e6f7a8b9}",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icons_16.png",
      "32": "icons/icons_32.png",
      "64": "icons/icons_64.png"
    },
    "default_title": "Time Sync - NTP Clock"
  },
  "permissions": [
    "storage",
    "geolocation"
  ],
  "host_permissions": [
    "https://time.now/*",
    "https://timeapi.io/*",
    "https://nominatim.openstreetmap.org/*",
    "https://get.geojs.io/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "web_accessible_resources": [
    {
      "resources": [
        "window.html",
        "window.js",
        "src/css/window.css"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  }
}