authentik/authentik/core/templates/base/header_js.html

{% load i18n %}
{% get_current_language as LANGUAGE_CODE %}

<script>
    window.authentik = {
        locale: "{{ LANGUAGE_CODE }}",
        config: JSON.parse('{{ config_json|escapejs }}'),
        brand: JSON.parse('{{ brand_json|escapejs }}'),
        versionFamily: "{{ version_family }}",
        versionSubdomain: "{{ version_subdomain }}",
        build: "{{ build }}",
    };
    window.addEventListener("DOMContentLoaded", function () {
        {% for message in messages %}
        window.dispatchEvent(
            new CustomEvent("ak-message", {
                bubbles: true,
                composed: true,
                detail: {
                    level: "{{ message.tags|escapejs }}",
                    message: "{{ message.message|escapejs }}",
                },
            }),
        );
        {% endfor %}
    });
</script>