From 387fd9986ca6d15e78ca2a8beb1099b1beb5d95b Mon Sep 17 00:00:00 2001
From: Daniel Owens <110904448+danowensdev@users.noreply.github.com>
Date: Thu, 5 Dec 2024 13:44:08 +0100
Subject: [PATCH] [typescript-fetch] fix API signature return type for empty
 20x responses (#20249)

* typescript-fetch: fix promise return type for optional responses

* Remove unnecessary change
---
 .../src/main/resources/typescript-fetch/apis.mustache         | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/modules/openapi-generator/src/main/resources/typescript-fetch/apis.mustache b/modules/openapi-generator/src/main/resources/typescript-fetch/apis.mustache
index 53276d5bf06..6c50de8a5a6 100644
--- a/modules/openapi-generator/src/main/resources/typescript-fetch/apis.mustache
+++ b/modules/openapi-generator/src/main/resources/typescript-fetch/apis.mustache
@@ -70,10 +70,10 @@ export interface {{classname}}Interface {
      {{/isDeprecated}}
      */
     {{^useSingleRequestParameter}}
-    {{nickname}}({{#allParams}}{{paramName}}{{^required}}?{{/required}}: {{#isEnum}}{{{datatypeWithEnum}}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{#isNullable}} | null{{/isNullable}}{{/isEnum}}, {{/allParams}}initOverrides?: RequestInit | runtime.InitOverrideFunction): Promise<{{{returnType}}}{{^returnType}}void{{/returnType}}>;
+    {{nickname}}({{#allParams}}{{paramName}}{{^required}}?{{/required}}: {{#isEnum}}{{{datatypeWithEnum}}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{#isNullable}} | null{{/isNullable}}{{/isEnum}}, {{/allParams}}initOverrides?: RequestInit | runtime.InitOverrideFunction): Promise<{{{returnType}}}{{#returnType}}{{#isResponseOptional}} | null | undefined {{/isResponseOptional}}{{/returnType}}{{^returnType}}void{{/returnType}}>;
     {{/useSingleRequestParameter}}
     {{#useSingleRequestParameter}}
-    {{nickname}}({{#allParams.0}}requestParameters: {{#prefixParameterInterfaces}}{{classname}}{{/prefixParameterInterfaces}}{{operationIdCamelCase}}Request, {{/allParams.0}}initOverrides?: RequestInit | runtime.InitOverrideFunction): Promise<{{{returnType}}}{{^returnType}}void{{/returnType}}>;
+    {{nickname}}({{#allParams.0}}requestParameters: {{#prefixParameterInterfaces}}{{classname}}{{/prefixParameterInterfaces}}{{operationIdCamelCase}}Request, {{/allParams.0}}initOverrides?: RequestInit | runtime.InitOverrideFunction): Promise<{{{returnType}}}{{#returnType}}{{#isResponseOptional}} | null | undefined {{/isResponseOptional}}{{/returnType}}{{^returnType}}void{{/returnType}}>;
     {{/useSingleRequestParameter}}
 
 {{/operation}}