Examine source code of Lukium's Nuisance Killer

{
  "manifest_version": 3,
  "name": "Lukium's Nuisance Killer",
  "version": "1.6",
  "description": "For 30 seconds after page load, check for and remove annoying elements.",
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "lukium@lukium.ai",
      "strict_min_version": "109.0"
    }
  }
}