Examine source code of Random YouTube Video

{
  "name": "Random YouTube Video",
  "description": "Customize, shuffle and play random videos from any YouTube channel.",
  "version": "3.1.14",
  "version_name": "3.1.14",
  "manifest_version": 3,
  "content_scripts": [
    {
      "js": [
        "content.js"
      ],
      "matches": [
        "*://*.youtube.com/*"
      ],
      "run_at": "document_start"
    }
  ],
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "*://*.youtube.com/*"
  ],
  "action": {
    "default_popup": "html/popup.html",
    "default_icon": {
      "16": "icons/icon-16-red.png",
      "32": "icons/icon-32-red.png",
      "48": "icons/icon-48-red.png",
      "128": "icons/icon-128-red.png"
    }
  },
  "icons": {
    "16": "icons/icon-16-red.png",
    "32": "icons/icon-32-red.png",
    "48": "icons/icon-48-red.png",
    "128": "icons/icon-128-red.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "RandomYouTubeVideo@NikkelM"
    }
  },
  "options_ui": {
    "page": "html/popup.html"
  }
}