Examine source code of total-tabs-exporter

{
  "manifest_version": 3,
  "name": "__MSG_extensionName__",
  "short_name": "totaltabsexporter",
  "version": "1.0.3",
  "description": "__MSG_extensionDescription__",
  "default_locale": "en_US",
  "permissions": [
    "tabs",
    "tabGroups",
    "contextualIdentities",
    "downloads",
    "clipboardWrite",
    "storage"
  ],
  "background": {
    "scripts": [
      "background/service-worker.js"
    ]
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_title": "__MSG_extensionName__",
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    }
  },
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "tab-exporter@local.extension",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "content_security_policy": {
    "extension_pages": "default-src 'self'; script-src 'self'; style-src 'self'; img-src 'self' data: https:;"
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+E"
      },
      "description": "__MSG_extensionName__"
    }
  }
}