hubl-class-macro.j2

{%- macro classNames(classes) -%}
  {%- set final = [] %}
  {%- for class, isActive in classes.items() -%}
    {% if isActive %}{% do final.append(class) %}{% endif %}
  {%- endfor -%}
  {%- if final|count -%}
    {{ { "class": final | join(" ") }|xmlattr }}
  {%- endif -%}
{%- endmacro -%}

<div {{ classNames({'is-open"/>': true, "is-closed": true, "another-class": true}) }}>
  hey test
</div>