Examine source code of Chrome UA Spoofer

{
  "manifest_version": 3,
  "name": "Chrome UA Spoofer",
  "version": "1.0",
  "browser_specific_settings": {
    "gecko": {
      "id": "ua-spoofer@example.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "declarativeNetRequest",
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html"
  }
}