Examine source code of YouTube Queue Remover

{
  "manifest_version": 3,
  "name": "YouTube My Mix Remover",
  "version": "1.0.1",
  "description": "Adds a remove button for YouTube playlist queue items and hides blocked songs.",
  "permissions": [
    "storage"
  ],
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.youtube.com/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "styles.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "yt-my-mix-remover@local",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}