tabler/core/pages/_includes/ui/switch-icon.html

{% assign icon = include.icon | default: 'heart' %}
{% assign icon-b = include.icon-b | default: icon | default: 'heart' %}
{% assign icon-a-color = include.icon-a-color | default: 'muted' %}
{% assign icon-b-color = include.icon-b-color | default: 'red' %}

{% if icon == 'star' or icon == 'heart' %}
	{% assign icon-b-class = 'icon-filled' %}
{% else %}
	{% assign icon-b-class = include.icon-b-class %}
{% endif %}

<button class="switch-icon{% if include.variant %} switch-icon-{{ include.variant }}{% endif %}{% if include.active %} active{% endif %}" data-bs-toggle="switch-icon">
	<span class="switch-icon-a text-{{ icon-a-color }}">
		{% include ui/icon.html icon=icon %}
	</span>
	<span class="switch-icon-b text-{{ icon-b-color }}">
		{% include ui/icon.html icon=icon-b class=icon-b-class %}
	</span>
</button>