Optimize output stringification

Author: theodorejb

src/Runtime.php

@@ -318,9 +318,15 @@ public static function escapeExpression(mixed $var): string
 
     /**
      * Get string representation for output
+     *
+     * This function has been optimized for JIT via a microbenchmark with common inputs.
      */
     public static function raw(mixed $value): string
     {
+        if (is_string($value)) {
+            return $value;
+        }
+
         if ($value === true) {
             return 'true';
         }