From 1c9fdc5c4c24b0ae45a1f1eab6322bbdd60dc529 Mon Sep 17 00:00:00 2001
From: Lee Zhen Yong <bruceoutdoors@gmail.com>
Date: Wed, 17 Aug 2022 16:44:27 +0800
Subject: [PATCH] fix nullable fields

---
 src/Structure/ClassStructureTrait.php | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/Structure/ClassStructureTrait.php b/src/Structure/ClassStructureTrait.php
index 3d4a237..c0bb6fc 100644
--- a/src/Structure/ClassStructureTrait.php
+++ b/src/Structure/ClassStructureTrait.php
@@ -104,10 +104,8 @@ public function jsonSerialize()
         $processed = array();
         if (null !== $properties) {
             foreach ($properties->getDataKeyMap() as $propertyName => $dataName) {
-                if (!isset($this->$propertyName)) {
-                    // Skip uninitialized properties
-                    continue;
-                }
+                // Get uninitialized properties as null; direct access will throw error on typed properties
+                $value = isset($this->$propertyName) ? $this->$propertyName : null;
                 
                 $value = $this->$propertyName;