yf_logger_psr class

<?php

/**
 * yf_logger as a Psr\Log\LoggerInterface, defined only when psr/log is loaded (composer or services/psr_log.php).
 * Use it as _class('logger_psr').
 */
load('logger');
if (interface_exists('Psr\Log\LoggerInterface', false)) {
    class yf_logger_psr extends yf_logger implements Psr\Log\LoggerInterface
    {
        // psr/log 3 declares ": void", psr/log 1 and 2 declare nothing; a return type is valid for both
        public function emergency($message, array $context = []): void
        {
            parent::emergency($message, $context);
        }

        public function alert($message, array $context = []): void
        {
            parent::alert($message, $context);
        }

        public function critical($message, array $context = []): void
        {
            parent::critical($message, $context);
        }

        public function error($message, array $context = []): void
        {
            parent::error($message, $context);
        }

        public function warning($message, array $context = []): void
        {
            parent::warning($message, $context);
        }

        public function notice($message, array $context = []): void
        {
            parent::notice($message, $context);
        }

        public function info($message, array $context = []): void
        {
            parent::info($message, $context);
        }

        public function debug($message, array $context = []): void
        {
            parent::debug($message, $context);
        }

        public function log($level, $message, array $context = []): void
        {
            parent::log($level, $message, $context);
        }
    }
}