Traverse the parser via method chaining

src/JsonParser.php

@@ -141,6 +141,21 @@ final class JsonParser implements IteratorAggregate
         return $this;
     }
 
+    /**
+     * Traverse the lazily iterable JSON
+     *
+     * @param Closure|null $callback
+     * @return void
+     */
+    public function traverse(Closure $callback = null): void
+    {
+        $callback ??= fn () => true;
+
+        foreach ($this as $key => $value) {
+            $callback($value, $key);
+        }
+    }
+
     /**
      * Retrieve the lazily iterable JSON
      *