From 364575b3f0743c2cf9b2db855f3b1702461a3fad Mon Sep 17 00:00:00 2001
From: Alexander Skvortsov <sasha.skvortsov109@gmail.com>
Date: Mon, 13 Dec 2021 12:34:51 -0500
Subject: [PATCH] Make sure `this.data.attributes` is initialized.

`Object.assign` is not type-safe, and does ensure that the property being assigned to is not undefined.
---
 js/src/common/Model.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/js/src/common/Model.ts b/js/src/common/Model.ts
index 9cea14335..338b66207 100644
--- a/js/src/common/Model.ts
+++ b/js/src/common/Model.ts
@@ -110,6 +110,7 @@ export default abstract class Model {
     }
 
     if ('attributes' in data) {
+      this.data.attributes ||= {};
       Object.assign(this.data.attributes, data.attributes);
     }