discourse/app/assets/javascripts/wizard/components/invite-list-user.js

import Component from "@ember/component";
import discourseComputed from "discourse-common/utils/decorators";

export default Component.extend({
  classNames: ["invite-list-user"],

  @discourseComputed("user.role")
  roleName(role) {
    return this.roles.findBy("id", role).label;
  }
});