woocommerce-paypal-payments/modules/woocommerce-logging/services.php

<?php

/**
 * The logging services.
 *
 * @package WooCommerce\WooCommerce\Logging
 */
declare (strict_types=1);
namespace WooCommerce\WooCommerce\Logging;

use WooCommerce\WooCommerce\Logging\Logger\NullLogger;
use WooCommerce\WooCommerce\Logging\Logger\WooCommerceLogger;
use WooCommerce\PayPalCommerce\Vendor\Psr\Container\ContainerInterface;
use WooCommerce\PayPalCommerce\Vendor\Psr\Log\LoggerInterface;
return array('woocommerce.logger.source' => function (): string {
    return 'woocommerce-paypal-payments';
}, 'woocommerce.logger.woocommerce' => function (ContainerInterface $container): LoggerInterface {
    if (!class_exists(\WC_Logger::class)) {
        return new NullLogger();
    }
    $source = $container->get('woocommerce.logger.source');
    return new WooCommerceLogger(wc_get_logger(), $source);
});