Examine source code of Salah Time (Prayer Times)

{
  "manifest_version": 3,
  "name": "Salah Time (Prayer Times)",
  "description": "The Firefox Addon to view Muslim prayer local time.",
  "author": "Najmul Huda Wahid",
  "version": "1.0.21",
  "browser_specific_settings": {
    "gecko": {
      "id": "{fb34e84c-a244-4ed9-9125-343106fc69a0}",
      "strict_min_version": "58.0"
    }
  },
  "action": {
    "default_popup": "index.html"
  },
  "icons": {
    "16": "images/icon-16.png",
    "32": "images/icon-32.png",
    "48": "images/icon-48.png",
    "128": "images/icon-128.png"
  },
  "permissions": [
    "geolocation"
  ]
}