Examine source code of Hide Youtube Shorts

{
  "name": "Block shorts script",
  "version": "1.0",
  "description": "Esconde o container de shorts do Youtube",
  "manifest_version": 2,
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/*"
      ],
      "js": [
        "script.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{21dd7175-a6c8-4f35-ac5d-f07e9ba5986d}"
    }
  }
}