variation.php
<?php
defined( 'ABSPATH' ) || exit;
?>
<script type="text/template" id="tmpl-variation-template">
<div class="woocommerce-variation-description">{{{ data.variation.variation_description }}}</div>
<div class="woocommerce-variation-price">{{{ data.variation.price_html }}}</div>
<div class="woocommerce-variation-availability">{{{ data.variation.availability_html }}}</div>
</script>
<script type="text/template" id="tmpl-unavailable-variation-template">
<p><?php esc_html_e( 'Sorry, this product is unavailable. Please choose a different combination.', 'woocommerce' ); ?></p>
</script>