From 24ec253bcd0c887a97809736e8d16b364ae9a093 Mon Sep 17 00:00:00 2001
From: Jasper Patterson <7529601+jasperpatterson@users.noreply.github.com>
Date: Fri, 21 Nov 2025 21:36:00 -0700
Subject: [PATCH] Update instanceOf function to check baseName

---
 .../src/main/resources/typescript-fetch/modelGeneric.mustache   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/openapi-generator/src/main/resources/typescript-fetch/modelGeneric.mustache b/modules/openapi-generator/src/main/resources/typescript-fetch/modelGeneric.mustache
index 16f2f4336212..973cbf9aeb49 100644
--- a/modules/openapi-generator/src/main/resources/typescript-fetch/modelGeneric.mustache
+++ b/modules/openapi-generator/src/main/resources/typescript-fetch/modelGeneric.mustache
@@ -25,7 +25,7 @@ import { type {{modelName}}, {{modelName}}FromJSONTyped, {{modelName}}ToJSON, {{
 export function instanceOf{{classname}}(value: object): value is {{classname}} {
     {{#vars}}
     {{#required}}
-    if (!('{{name}}' in value) || value['{{name}}'] === undefined) return false;
+    if (!('{{baseName}}' in value) || value['{{baseName}}'] === undefined) return false;
     {{/required}}
     {{/vars}}
     return true;