Examine source code of Mind Control

{
  "manifest_version": 3,
  "name": "Mind Control",
  "version": "1.1",
  "description": "Take control of your YouTube experience - remove shorts, non-subscribed channels, and more",
  "action": {
    "default_icon": "icons/brain-icon.svg",
    "default_popup": "popup.html",
    "default_title": "Mind Control Settings"
  },
  "permissions": [
    "activeTab"
  ],
  "host_permissions": [
    "*://*.youtube.com/*",
    "*://*.youtube.com.br/*",
    "*://*.youtube.co.uk/*",
    "*://*.youtube.ca/*",
    "*://*.youtube.de/*",
    "*://*.youtube.fr/*",
    "*://*.youtube.es/*",
    "*://*.youtube.it/*",
    "*://*.youtube.nl/*",
    "*://*.youtube.pl/*",
    "*://*.youtube.com.mx/*",
    "*://*.youtube.com.ar/*",
    "*://*.youtube.co.jp/*",
    "*://*.youtube.co.kr/*",
    "*://*.youtube.com.au/*",
    "*://*.youtube.co.in/*",
    "*://*.youtube.ru/*",
    "*://*.youtube.se/*",
    "*://*.youtube.dk/*",
    "*://*.youtube.no/*",
    "*://*.youtube.fi/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*",
        "*://*.youtube.com.br/*",
        "*://*.youtube.co.uk/*",
        "*://*.youtube.ca/*",
        "*://*.youtube.de/*",
        "*://*.youtube.fr/*",
        "*://*.youtube.es/*",
        "*://*.youtube.it/*",
        "*://*.youtube.nl/*",
        "*://*.youtube.pl/*",
        "*://*.youtube.com.mx/*",
        "*://*.youtube.com.ar/*",
        "*://*.youtube.co.jp/*",
        "*://*.youtube.co.kr/*",
        "*://*.youtube.com.au/*",
        "*://*.youtube.co.in/*",
        "*://*.youtube.ru/*",
        "*://*.youtube.se/*",
        "*://*.youtube.dk/*",
        "*://*.youtube.no/*",
        "*://*.youtube.fi/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://*.youtube.com/*",
        "*://*.youtube.com.br/*",
        "*://*.youtube.co.uk/*",
        "*://*.youtube.ca/*",
        "*://*.youtube.de/*",
        "*://*.youtube.fr/*",
        "*://*.youtube.es/*",
        "*://*.youtube.it/*",
        "*://*.youtube.nl/*",
        "*://*.youtube.pl/*",
        "*://*.youtube.com.mx/*",
        "*://*.youtube.com.ar/*",
        "*://*.youtube.co.jp/*",
        "*://*.youtube.co.kr/*",
        "*://*.youtube.com.au/*",
        "*://*.youtube.co.in/*",
        "*://*.youtube.ru/*",
        "*://*.youtube.se/*",
        "*://*.youtube.dk/*",
        "*://*.youtube.no/*",
        "*://*.youtube.fi/*"
      ],
      "css": [
        "styles.css"
      ],
      "run_at": "document_start"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "@addon-mind_control-akka",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "113.0"
    },
    "safari": {
      "strict_min_version": 14
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "icons": {
    "32": "icons/brain-icon.svg",
    "48": "icons/brain-icon.svg",
    "64": "icons/brain-icon.svg",
    "128": "icons/brain-icon.svg"
  }
}