Font Awesome 5 cart with a WooCommerce counter - action

font-awesome-wc-cart.php

<?php
// Place in an action.
// Requires Font Awesome 5.

function cs_cart_icon() {

  // Bail early if we don't have WC.
  if ( !function_exists('wc_get_cart_url') ) return;
?>
  <a class="cart-contents text-white" href="<?php echo wc_get_cart_url(); ?>" title="<?php _e( 'View the shopping cart' ) ?>">
    <span class="fa-layers fa-2x fa-fw">
      <i class="fas fa-shopping-cart"></i>
      <span class="fa-layers-counter bg-secondary" data-fa-transform="grow-20"><?php echo WC()->cart->get_cart_contents_count() ?></span>
    </span>
  </a>

<?php
}