Examine source code of Export Tab Groups

{
  "manifest_version": 2,
  "name": "Export Tab Groups",
  "version": "0.2.0",
  "description": "Export tabs as markdown, organized by tab groups. A minimal alternative to Copy All Tabs with group support.",
  "permissions": [
    "tabs",
    "tabGroups"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Export Tab Groups"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "export-tab-groups@firefox",
      "strict_min_version": "139.0"
    }
  }
}