Examine source code of Youtube Shorts Controls

{
  "manifest_version": 2,
  "name": "Youtube Short Controls",
  "version": "1.0.2",
  "description": "Adds controls to shorts so that you can pick a point on the video.",
  "permissions": [
    "tabs",
    "activeTab"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://*.youtube.com/*"
      ],
      "js": [
        "index.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{db83f0fb-9b5a-4fb3-a8fe-8c9afcc8a2a3}"
    }
  }
}