Examine source code of Hide Subscribed Listing

{
  "browser_specific_settings": {
    "gecko": {
      "id": "worldv@fiverr.FO8202B078CC46",
      "strict_min_version": "75.0"
    }
  },
  "name": "Hide Subscribed Listing",
  "version": "1.32",
  "description": "Hide YouTube subscribed videos by clicking on thumbnail of videos on subscription page.",
  "permissions": [
    "notifications",
    "activeTab",
    "storage",
    "tabs",
    "alarms",
    "cookies",
    "webRequest"
  ],
  "author": "",
  "icons": {
    "96": "img/icon-lg.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/*"
      ],
      "js": [
        "./libs/jquery-3.4.1.min.js",
        "./libs/jquery-3.6.0.min.js",
        "./js/content.script.js"
      ],
      "css": [
        "loader.css"
      ],
      "run_at": "document_end",
      "all_frames": false
    }
  ],
  "manifest_version": 2,
  "background": {
    "scripts": [
      "js/background.js"
    ]
  }
}