Examine source code of Time Tracker

{
  "manifest_version" : 3 ,
  "name" : "Time Tracker",
  "version" : "1.4.0",
  "description" : "Start and stop your Time Tracker timer from the browser toolbar.",
  "icons" : {
    "16" : "icons/icon16.png",
    "32" : "icons/icon32.png",
    "48" : "icons/icon48.png",
    "128" : "icons/icon128.png"
  },
  "action" : {
    "default_title" : "Time Tracker",
    "default_popup" : "popup.html"
  },
  "background" : {
    "scripts" : [
      "background.js" 
    ],
    "type" : "module" 
  },
  "permissions" : [
    "storage" ,
    "alarms" 
  ],
  "host_permissions" : [
    "https://timetrackersoftwarehq.com/*" 
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "time-tracker@timetrackersoftwarehq.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "personallyIdentifyingInfo"
        ]
      }
    }
  }
}