Examine source code of TabSwitch Refresh

{
  "manifest_version": 3,
  "name": "__MSG_extension_name__",
  "version": "1.1.0",
  "description": "__MSG_extension_description__",
  "default_locale": "en",
  "permissions": [
    "storage"
  ],
  "background": {
    "scripts": [
      "service-worker.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "reload-on-tab-select@local",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/on/reload-16.png",
    "32": "icons/on/reload-32.png",
    "48": "icons/on/reload-48.png",
    "128": "icons/on/reload-128.png"
  },
  "action": {
    "default_title": "__MSG_click_to_turn_off__",
    "default_icon": {
      "16": "icons/on/reload-16.png",
      "32": "icons/on/reload-32.png",
      "48": "icons/on/reload-48.png",
      "128": "icons/on/reload-128.png"
    }
  }
}