Woocommerce Snippet on hiding all shipment methods when free shipping is available

hide-shipping-methods.php

add_filter( 'woocommerce_available_shipping_methods', 'hide_all_shipping_when_free_is_available' , 10, 1 ); 
function hide_all_shipping_when_free_is_available( $available_methods ) { 
	if( isset( $available_methods['free_shipping'] ) ) : 
		$freeshipping = array(); $freeshipping = $available_methods['free_shipping']; 
	
	array unset( $available_methods ); 

	$available_methods = array(); 
	$available_methods[] = $freeshipping; 
	endif; 
	return $available_methods; 
}