Examine source code of Passworder for Android

{
  "manifest_version": 2,
  "name": "Passworder for Android",
  "version": "1.0",
  "description": "Generate strong passwords with custom length in Firefox for Android Mobile and Desktop",
  "permissions": [
    "clipboardWrite"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Passworder for Android"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "passworder@example.com",
      "strict_min_version": "79.0"
    }
  },
  "content_security_policy": "script-src 'self'; object-src 'self';"
}