Examine source code of Youtube Shorts Toggle

{
  "manifest_version": 2,
  "name": "Youtube Shorts Toggle",
  "version": "1.3",
  "description": "Adds a toggle for youtube shorts.",
  "icons": {
    "48": "icons/shorts-toggle-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "shorts-toggle.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{666dcc30-053d-4ec7-b58b-60cc97ca8dd0}"
    }
  }
}