Examine source code of TabCountStats

{
  "manifest_version": 2,
  "name": "TabStats",
  "version": "0.9.1",
  "description": "Collects simple stats from the opend tabs, currently without any usage. Adds ability to open random Tab and hints the user to reduce Tab count.",
  "applications": {
    "gecko": {
      "strict_min_version": "79.0a1",
      "id": "TabStats@tabnoc.com"
    }
  },
  "browser_action": {
    "default_icon": "./assets/icon-512.png",
    "default_title": "TabAddonPage",
    "browser_style": true,
    "default_popup": "./dist/popup/index.html"
  },
  "options_ui": {
    "page": "./dist/options/index.html",
    "open_in_tab": true,
    "chrome_style": false
  },
  "background": {
    "page": "./dist/background/index.html",
    "persistent": false
  },
  "icons": {
    "16": "./assets/icon-512.png",
    "48": "./assets/icon-512.png",
    "128": "./assets/icon-512.png"
  },
  "permissions": [
    "tabs",
    "sessions",
    "storage",
    "<all_urls>"
  ],
  "web_accessible_resources": [
    "dist/contentScripts/style.css"
  ]
}