Detecting WooCommerce Block Pages

wc_block.php

<?php

function is_wc_cart_block_based() {
    $cart_page_id = wc_get_page_id( 'cart' );
    if ( $cart_page_id && $cart_page = get_post( $cart_page_id ) ) {
        // Check for WooCommerce Cart block
        return has_block( 'woocommerce/cart', $cart_page );
    }
    return false;
}

function is_wc_checkout_block_based() {
    $checkout_page_id = wc_get_page_id( 'checkout' );
    if ( $checkout_page_id && $checkout_page = get_post( $checkout_page_id ) ) {
        // Check for WooCommerce Checkout block
        return has_block( 'woocommerce/checkout', $checkout_page );
    }
    return false;
}

// Usage
if ( is_wc_cart_block_based() ) {
    echo 'Cart page is block-based.';
} else {
    echo 'Cart page is shortcode-based.';
}

if ( is_wc_checkout_block_based() ) {
    echo 'Checkout page is block-based.';
} else {
    echo 'Checkout page is shortcode-based.';
}