Examine source code of Cookie Header Exporter

{
  "manifest_version": 3,
  "name": "Cookie Header Exporter for Firefox",
  "short_name": "Cookie Exporter",
  "version": "1.9.0",
  "description": "Transfer cookies losslessly across a root domain and all of its subdomains.",
  "permissions": [
    "activeTab",
    "cookies",
    "clipboardWrite"
  ],
  "host_permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "action": {
    "default_title": "Import or export cookies",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "64": "icons/icon-64.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png",
    "256": "icons/icon-256.png",
    "512": "icons/icon-512.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "cookie-header-exporter@local",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}