fix: openapi-typescript 7 arg type

Author: ajaishankar

package-lock.json

@@ -1,7 +1,7 @@
 {
   "name": "openapi-typescript-fetch",
   "description": "A typed fetch client for openapi-typescript",
-  "version": "2.2.0",
+  "version": "2.2.1",
   "engines": {
     "node": ">= 12.0.0",
     "npm": ">= 7.0.0"

package.json

@@ -13,6 +13,9 @@ export type OpenapiPaths<Paths> = {
   }
 }
 
+// https://github.com/ajaishankar/openapi-typescript-fetch/issues/71#issuecomment-2847360598
+type NonNever<T> = [T] extends [never | undefined] ? unknown : T
+
 export type OpArgType<OP> = OP extends {
   parameters?: {
     path?: infer P
@@ -28,7 +31,10 @@ export type OpArgType<OP> = OP extends {
     }
   }
 }
-  ? P & Q & (B extends Record<string, unknown> ? B[keyof B] : unknown) & RB
+  ? NonNever<P> &
+      NonNever<Q> &
+      (B extends Record<string, unknown> ? NonNever<B[keyof B]> : unknown) &
+      NonNever<RB>
   : Record<string, never>
 
 type OpResponseTypes<OP> = OP extends {