Update BrowserConsoleHandler console output method (#1739)

Instead of using console.log for all log levels, it uses debug, info, warn and error methods depending on the log level.
This makes filtering logs easier in the browser console and highlights error level messages.

src/Monolog/Handler/BrowserConsoleHandler.php

@@ -14,6 +14,7 @@ namespace Monolog\Handler;
 use Monolog\Formatter\FormatterInterface;
 use Monolog\Formatter\LineFormatter;
 use Monolog\Utils;
+use Monolog\Logger;
 
 use function count;
 use function headers_list;
@@ -177,7 +178,7 @@ class BrowserConsoleHandler extends AbstractProcessingHandler
             $extra = static::dump('Extra', $record['extra']);
 
             if (empty($context) && empty($extra)) {
-                $script[] = static::call_array('log', static::handleStyles($record['formatted']));
+                $script[] = static::call_array(static::getConsoleMethodForLevel($record['level']), static::handleStyles($record['formatted']));
             } else {
                 $script = array_merge(
                     $script,
@@ -192,6 +193,20 @@ class BrowserConsoleHandler extends AbstractProcessingHandler
         return "(function (c) {if (c && c.groupCollapsed) {\n" . implode("\n", $script) . "\n}})(console);";
     }
 
+    private static function getConsoleMethodForLevel($level)
+    {
+        return [
+            Logger::DEBUG => 'debug',
+            Logger::INFO => 'info',
+            Logger::NOTICE => 'info',
+            Logger::WARNING => 'warn',
+            Logger::ERROR => 'error',
+            Logger::CRITICAL => 'error',
+            Logger::ALERT => 'error',
+            Logger::EMERGENCY => 'error',
+        ][$level] ?? 'log';
+    }
+
     /**
      * @return string[]
      */