Examine source code of YouTube Live Sidebar

{
  "manifest_version": 3,
  "name": "YouTube Live Sidebar",
  "version": "1.0",
  "description": "Shows a live streams block above subscriptions in the YouTube sidebar.",
  "icons": {
    "512": "icons/icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "youtube-live-sidebar@extension",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/*"
      ],
      "js": [
        "innertube.js",
        "content.js"
      ],
      "css": [
        "styles.css"
      ]
    }
  ],
  "permissions": [
    "storage"
  ]
}