Examine source code of SafeTuber – YouTube Content Filter

{
  "manifest_version": 3,
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "version": "1.1.10",
  "icons": {
    "16": "assets/icon16.png",
    "32": "icon/32.png",
    "48": "assets/icon48.png",
    "96": "icon/96.png",
    "128": "assets/icon128.png"
  },
  "default_locale": "en",
  "browser_specific_settings": {
    "gecko": {
      "id": "safetuber@safetuber.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "activeTab",
    "alarms"
  ],
  "host_permissions": [
    "*://*.youtube.com/*",
    "*://safetuber.com/*"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "assets/icon16.png",
      "48": "assets/icon48.png",
      "128": "assets/icon128.png"
    },
    "default_title": "__MSG_pageTitle__"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "styles.css"
      ],
      "matches": [
        "*://*.youtube.com/*",
        "*://safetuber.com/*"
      ]
    }
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'; img-src 'self' https://safetuber.com data:;"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://safetuber.com/*",
        "https://www.youtube.com/*"
      ],
      "run_at": "document_idle",
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}