Examine source code of Sync Map & Notion

{
  "manifest_version": 3,
  "name": "Sync Map & Notion",
  "description": "Add google places to Notion",
  "version": "1.5",
  "background": {
    "scripts": [
      "service_worker.js"
    ]
  },
  "page_action": {
    "default_icon": {
      "19": "icons/notion-19.png",
      "38": "icons/notion-38.png"
    },
    "default_title": "Add to Notion",
    "show_matches": [
      "https://www.google.com/maps/place/*"
    ]
  },
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "activeTab",
    "scripting",
    "storage"
  ],
  "host_permissions": [
    "https://api.notion.com/"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "extension@japans_save_to_notion",
      "strict_min_version": "109.0"
    }
  }
}