From ea14b6d4bf1d0817254ed12d8f0e98f5eb3f1701 Mon Sep 17 00:00:00 2001
From: Mia Miu <xmia665@aucklanduni.ac.nz>
Date: Fri, 12 Jun 2026 03:51:01 +1200
Subject: [PATCH] fix preserve string date fields

---
 src/gen/model/accounting/models.ts |  7 +------
 src/test/objectSerializer.spec.ts  | 16 ++++++++++++++++
 2 files changed, 17 insertions(+), 6 deletions(-)
 create mode 100644 src/test/objectSerializer.spec.ts

diff --git a/src/gen/model/accounting/models.ts b/src/gen/model/accounting/models.ts
index 5268439a1..e24e3d3bc 100644
--- a/src/gen/model/accounting/models.ts
+++ b/src/gen/model/accounting/models.ts
@@ -579,12 +579,7 @@ export class ObjectSerializer {
         if (data == undefined) {
             return data;
         } else if (primitives.indexOf(type.toLowerCase()) !== -1) {
-            if (type === "string" && data.toString().substring(0, 6) === "/Date(") {
-                return this.deserializeDateFormats(type, data) // For MS dates that are of type 'string'
-            }
-            else {
-                return data;
-            }
+            return data;
         } else if (type.lastIndexOf("Array<", 0) === 0) { // string.startsWith pre es6
             let subType: string = type.replace("Array<", ""); // Array<Type> => Type>
             subType = subType.substring(0, subType.length - 1); // Type> => Type
diff --git a/src/test/objectSerializer.spec.ts b/src/test/objectSerializer.spec.ts
new file mode 100644
index 000000000..285071e28
--- /dev/null
+++ b/src/test/objectSerializer.spec.ts
@@ -0,0 +1,16 @@
+import { ObjectSerializer } from '../gen/model/accounting/models';
+
+describe('ObjectSerializer', () => {
+  it('preserves invoice date fields as strings during deserialization', () => {
+    const invoice = ObjectSerializer.deserialize(
+      {
+        Date: '/Date(1743638400000+0000)/',
+        DueDate: '/Date(1743724800000+0000)/',
+      },
+      'Invoice',
+    );
+
+    expect(invoice.date).toBe('/Date(1743638400000+0000)/');
+    expect(invoice.dueDate).toBe('/Date(1743724800000+0000)/');
+  });
+});