Examine source code of Mine Finder

{
  "name": "Mine Finder",
  "short_name": "minefinder",
  "version": "0.1.3",
  "description": "A classic mine-finding game that you can play in a popup.",
  "icons": {
    "16": "images/logo.png",
    "48": "images/logo.png",
    "128": "images/logo.png"
  },
  "action": {
    "default_icon": "images/logo.png",
    "default_popup": "index.html"
  },
  "permissions": [
    "storage"
  ],
  "manifest_version": 3,
  "browser_specific_settings": {
    "gecko": {
      "id": "{382b1072-4f8a-4628-8028-43ce8e6e978d}",
      "strict_min_version": "105.0"
    }
  }
}