Examine source code of YouTube No Shorts

{
  "manifest_version": 3,
  "name": "YouTube No Shorts",
  "version": "1.0",
  "description": "Completely removes YouTube Shorts from feed, search, sidebar, and video page.",
  "icons": {
    "48": "icons/icon-48.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "my-addon@local",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "tabs",
    "webNavigation"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/*"
      ],
      "js": [
        "content-script.js"
      ],
      "run_at": "document_idle"
    }
  ]
}