Examine source code of Inferfox ChannelGuard

{
  "manifest_version": 2,
  "name": "Inferfox ChannelGuard",
  "version": "1.0.3",
  "description": "Allow YouTube videos only from parent-approved channels.",
  "permissions": [
    "storage",
    "tabs",
    "webNavigation",
    "*://*.youtube.com/*",
    "*://youtu.be/*",
    "*://*.youtube-nocookie.com/*"
  ],
  "background": {
    "scripts": [
      "src/shared.js",
      "src/background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*",
        "*://youtu.be/*",
        "*://*.youtube-nocookie.com/*"
      ],
      "js": [
        "src/shared.js",
        "src/content_script.js"
      ],
      "all_frames": true,
      "run_at": "document_start"
    }
  ],
  "options_ui": {
    "page": "src/options.html",
    "open_in_tab": true
  },
  "browser_action": {
    "default_title": "Inferfox ChannelGuard",
    "default_popup": "src/popup.html",
    "default_icon": {
      "48": "assets/icon-48.png",
      "96": "assets/icon-96.png"
    }
  },
  "icons": {
    "48": "assets/icon-48.png",
    "96": "assets/icon-96.png",
    "128": "assets/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "channelguard-youtube-whitelist@local-first.tools",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}