example.settings.json

{
  "//": "The fields outside /public are only visible on the server side:",
  "accounts-drupal": {
    "site": "http://drupal8.example.org",
    "site_options": {
      "//": "You can add any option in this object, most usefully \"auth\": \"user:password\""
    },
    "updaters": [
      "// An array of hostnames of IP addresses from which to accept updates",
      "// A single Drupal site is likely to need several such addresses, one per web server",
      "// They will often differ from the IP of the 'site' , which is likely to be a proxy",
      "127.0.0.1"
    ],
    "anonymousName": "Anome",
    "appToken": "sometoken",

    "//": "A hash of field names to be exposed as root properties on the user object:",
    "//": "- 'profile' is part of accounts-base. Use any non-empty string to include it",
    "//": "- 'username' and 'emails' belong to accounts-password, but have specific handling in accounts-base too.",
    "//": "- No other field can be added at user root without tweaking the 'users' publication",
    "//": "For 'username' and 'emails', values are field  names into the whoami result object.",
    "//": "For emails, if the value is a string, it will be wrapped in an array to match meteor requirements",
    "//": "If 'rootFields' is not provided, it will default to {profile: 'profile', username: 'name', emails: 'email'}.",
    "rootFields": {
      "profile": "profile",
      "username": "name",
      "emails": "email"
    }
  },
  "public": {
    "accounts-drupal": {
      "//": "Fields below public are visible on the client side:",
      "backgroundLogin": 300
    }
  }
}