Examine source code of Storm TickTock Ultimate

{
  "manifest_version": 2,
  "name": "Storm TickTock Ultimate",
  "version": "5.0.9",
  "description": "Mesurer la duree de vos sessions.",
  "permissions": [
    "storage",
    "notifications"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "@0d1f9958-ef5d-4312-8efc-b7d52610cdd3",
      "strict_min_version": "58.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "author": "a_rivera",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon-48.png"
    }
  }
}