Examine source code of YT Tracker

{
  "manifest_version": 3,
  "id": "{d711d806-6f51-45f6-9fd6-1155edc1f303}",
  "browser_specific_settings": {
    "gecko": {
      "id": "{d711d806-6f51-45f6-9fd6-1155edc1f303}",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "name": "YT Tracker",
  "version": "1.0",
  "description": "YT Tracker",
  "permissions": [
    "activeTab",
    "tabs",
    "scripting",
    "storage"
  ],
  "host_permissions": [
    "*://*.youtube.com/*",
    "*://youtu.be/*",
    "https://yttracker-b6s1.onrender.com/*",
    "http://localhost:10000/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*",
        "*://youtu.be/*"
      ],
      "js": [
        "config.js",
        "content.js"
      ],
      "run_at": "document_end",
      "all_frames": false
    }
  ],
  "action": {
    "default_popup": "popup.html",
    "default_title": "YT_Tracker"
  },
  "icons": {
    "16": "./icon16.jpg"
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'; img-src 'self' https:"
  }
}