Examine source code of Hibernating Tabs

{
  "manifest_version": 3,
  "name": "Hibernating Tabs",
  "version": "1.0",
  "description": "Automatically hibernate inactive tabs to save system resources.",
  "permissions": [
    "storage",
    "tabs",
    "activeTab",
    "scripting"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/icon16.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "hibernatingTabs@correia.extensions",
      "strict_min_version": "128.0"
    }
  }
}