Examine source code of TimeTrack Timer

{
  "manifest_version": 3,
  "name": "__MSG_appName__",
  "description": "__MSG_appDesc__",
  "default_locale": "en",
  "version": "1.0.2",
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://*.timetrackenterprise.com/*"
  ],
  "action": {
    "default_icon": {
      "128": "images/logo128.png"
    },
    "default_popup": "index.html"
  },
  "icons": {
    "128": "images/logo128.png",
    "256": "images/logo256.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5d36b1e3-89d8-4457-a70d-0c701c04630a}",
      "strict_min_version": "42.0"
    }
  }
}