[keycloak-user] Keycloak-js adapter ES6/Promise

Hi, I start using the javascript adapter this week. The documentation https://www.keycloak.org/docs/4.6/securing_apps/#_javascript_adapter "says" that the init(...) function should returns a Promise. After installing the official(?) javascript adapter with "npm install keycloak-js" I only get the old "success" function as return value. I don't understand what I am doing wrong here. Shouldn't I get a keycloak.js file with a Promise in it? Also I wonder if the keycloak-js adapter should be on ES6 so I am able to do an "import Keycloak from "keycloak-js"". I don't find any information about on https://github.com/keycloak/keycloak-js-bower. Since 4.0.0-beta nothing changed here. Best Regards Alex