From 1671f6fa362602b6807451ee8a59e429218c1086 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ketill=20Anton=C3=ADus=20=C3=81g=C3=BAstsson?=
 <ketill95@gmail.com>
Date: Fri, 21 Nov 2025 10:49:57 +0100
Subject: [PATCH] feat(openapi-fetch): enable middleware request param module
 augmentation

---
 packages/openapi-fetch/src/index.d.ts | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/packages/openapi-fetch/src/index.d.ts b/packages/openapi-fetch/src/index.d.ts
index 387a5642f..b431396db 100644
--- a/packages/openapi-fetch/src/index.d.ts
+++ b/packages/openapi-fetch/src/index.d.ts
@@ -131,18 +131,20 @@ export type MergedOptions<T = unknown> = {
   fetch: typeof globalThis.fetch;
 };
 
+export interface MiddlewareRequestParams {
+  query?: Record<string, unknown>;
+  header?: Record<string, unknown>;
+  path?: Record<string, unknown>;
+  cookie?: Record<string, unknown>;
+}
+
 export interface MiddlewareCallbackParams {
   /** Current Request object */
   request: Request;
   /** The original OpenAPI schema path (including curly braces) */
   readonly schemaPath: string;
   /** OpenAPI parameters as provided from openapi-fetch */
-  readonly params: {
-    query?: Record<string, unknown>;
-    header?: Record<string, unknown>;
-    path?: Record<string, unknown>;
-    cookie?: Record<string, unknown>;
-  };
+  readonly params: MiddlewareRequestParams;
   /** Unique ID for this request */
   readonly id: string;
   /** createClient options (read-only) */