Examine source code of Tab Stats PHD

{
  "manifest_version": 3,
  "name": "Tab Stats PHD",
  "version": "1.3",
  "description": "Track how many tabs you have across all windows over time! The developer of this extension uses 300-500 tabs in 1 window every day.",
  "icons": {
    "64": "icons/tabstats-icon-64.png"
  },
  "permissions": [
    "tabs",
    "storage"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_title": "Tab Counter",
    "default_icon": {
      "64": "icons/tabstats-icon-64.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "tab-stats-PHD@phatdumpling.net",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "browsingActivity"
        ],
        "optional": []
      }
    }
  }
}