Examine source code of Match2Cal

{
  "manifest_version": 3,
  "name": "Match2Cal",
  "version": "1.0.0",
  "description": "Add PractiScore matches to Google Calendar, Apple Calendar, or ICS in one click.",
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png"
    },
    "default_title": "Add Match to Calendar"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "scripting",
    "activeTab"
  ],
  "host_permissions": [
    "https://practiscore.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "match2cal@usacarry.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}