Examine source code of NotebookLM Exporter

{
  "manifest_version": 2,
  "name": "__MSG_extName__",
  "short_name": "NLM Exporter",
  "version": "2.0",
  "description": "__MSG_extDescription__",
  "default_locale": "en",
  "permissions": [
    "tabs",
    "storage",
    "activeTab",
    "contextMenus",
    "https://notebooklm.google.com/*",
    "https://www.youtube.com/*",
    "https://accounts.google.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_popup": "popup/popup.html",
    "default_title": "__MSG_extName__",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://notebooklm.google.com/*"
      ],
      "js": [
        "content/i18n-content.js",
        "content/notebooklm.js",
        "content/export.js"
      ],
      "run_at": "document_idle",
      "all_frames": false
    }
  ],
  "options_ui": {
    "page": "app/app.html#settings",
    "open_in_tab": true
  },
  "web_accessible_resources": [
    "_locales/*/messages.json"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "nlmexporter@extension",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "content_security_policy": "script-src 'self'; object-src 'none'"
}