Examine source code of TabNap - Smart Tab Suspension

{
  "manifest_version": 2,
  "name": "TabNap - Smart Tab Suspension",
  "version": "2.1.2",
  "description": "Save memory by automatically suspending inactive tabs. Lightweight, privacy-focused, with zombie detection and multi-language support.",
  "author": "Hakan Tektakar",
  "homepage_url": "https://github.com/bysismo",
  "default_locale": "tr",
  "permissions": [
    "tabs",
    "storage",
    "alarms",
    "activeTab",
    "notifications",
    "webRequest",
    "webRequestBlocking",
    "contextMenus",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "tab-engine.js",
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "img/16x16.png",
      "32": "img/32x32.png",
      "48": "img/48x48.png"
    }
  },
  "icons": {
    "16": "img/16x16.png",
    "32": "img/32x32.png",
    "48": "img/48x48.png",
    "96": "img/96x96.png",
    "128": "img/128x128.png",
    "256": "img/256x256.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "tab-suspender@hakanttkr.dev",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}