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``guard``
=========
.. versionadded:: 3.15
The ``guard`` tag was added in Twig 3.15.
The ``guard`` statement checks if some Twig callables are available at
**compilation time** to bypass code compilation that would otherwise fail.
.. code-block:: twig
{% guard function importmap %}
{{ importmap('app') }}
{% endguard %}
The first argument is the Twig callable to test: ``filter``, ``function``, or
``test``. The second argument is the Twig callable name you want to test.
You can also generate different code if the callable does not exist:
.. code-block:: twig
{% guard function importmap %}
{{ importmap('app') }}
{% else %}
{# the importmap function doesn't exist, generate fallback code #}
{% endguard %}
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