Examine source code of Smart Tab Suspender

{
  "manifest_version": 2,
  "name": "Smart Tab Suspender",
  "version": "1.0",
  "description": "Automatically unloads inactive tabs to save RAM with customizable timing.",
  "icons": {
    "64": "icon64.png",
    "128": "icon128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon64.png"
  },
  "permissions": [
    "tabs",
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{0c6e67e9-dbd0-46b0-bdc7-bca615cec21c}",
      "strict_min_version": "117.0"
    }
  }
}