From 7599531960a873022c78a998b2eea8749865fb4e Mon Sep 17 00:00:00 2001
From: Liam Martens <hi@liammartens.com>
Date: Mon, 20 Jan 2020 16:59:16 +0100
Subject: [PATCH] Fixed call of toISOString on a string type when using string
 type-mapping (#5057)

---
 .../src/main/resources/typescript-axios/apiInner.mustache     | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/modules/openapi-generator/src/main/resources/typescript-axios/apiInner.mustache b/modules/openapi-generator/src/main/resources/typescript-axios/apiInner.mustache
index 3f625aca23de..dc839d57cf7b 100644
--- a/modules/openapi-generator/src/main/resources/typescript-axios/apiInner.mustache
+++ b/modules/openapi-generator/src/main/resources/typescript-axios/apiInner.mustache
@@ -115,7 +115,9 @@ export const {{classname}}AxiosParamCreator = function (configuration?: Configur
             {{^isListContainer}}
             if ({{paramName}} !== undefined) {
                 {{#isDateTime}}
-                localVarQueryParameter['{{baseName}}'] = ({{paramName}} as any).toISOString();
+                localVarQueryParameter['{{baseName}}'] = ({{paramName}} as any instanceof Date) ?
+                    ({{paramName}} as any).toISOString() :
+                    {{paramName}};
                 {{/isDateTime}}
                 {{^isDateTime}}
                 {{#isDate}}