Examine source code of YouTube Unhook

{
  "manifest_version": 3,
  "name": "YouTube Focus Mode",
  "version": "1.0.0",
  "description": "Remove distractions from YouTube",
  "action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_popup": "popup.html",
    "default_title": "YouTube Focus Mode"
  },
  "permissions": [
    "storage",
    "activeTab"
  ],
  "host_permissions": [
    "*://*.youtube.com/*"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "styles.css"
      ],
      "matches": [
        "*://*.youtube.com/*"
      ]
    }
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "styles.css"
      ]
    }
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self';"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "engineerbaba049@gmail.com",
      "strict_min_version": "109.0"
    }
  }
}