Examine source code of Brainrot Blocker

{
  "manifest_version": 3,
  "name": "Brainrot Blocker",
  "version": "1.0",
  "description": "Clean your browser from brainrots.",
  "browser_specific_settings": {
    "gecko": {
      "id": "brainrotblocker@mikuscat.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png",
    "512": "icons/icon512.png"
  },
  "action": {
    "default_icon": "icons/icon48.png",
    "default_popup": "popup.html"
  },
  "permissions": [
    "storage",
    "tabs",
    "activeTab"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_start",
      "js": [
        "content.js"
      ]
    }
  ]
}