Examine source code of Vertical Twitch

{
  "name": "Vertical Twitch",
  "version": "1.11",
  "description": "View Twitch vertically",
  "manifest_version": 2,
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://www.twitch.tv/*"
      ],
      "css": [
        "content.css",
        "jquery-ui.min.css"
      ],
      "js": [
        "jquery-3.5.1.min.js",
        "jquery-ui.min.js",
        "utils.js",
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{3c79db25-5fc9-4386-aaf7-0aaf5e07930f}",
      "strict_min_version": "58.0"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  }
}