Ensure request parameter extraction recognises path-only routes

Author: smorimoto

.changeset/extract-request-params-delete.md

@@ -0,0 +1,5 @@
+---
+"swagger-typescript-api": patch
+---
+
+Support extracting request parameters for routes that only declare path parameters, such as DELETE methods.

src/schema-routes/schema-routes.ts

@@ -645,7 +645,11 @@ export class SchemaRoutes {
     extractRequestParams,
     routeName,
   }) => {
-    if (!queryParams || !queryParams.length) return null;
+    if (
+      (!queryParams || !queryParams.length) &&
+      (!pathArgsSchemas || !pathArgsSchemas.length)
+    )
+      return null;
 
     const pathParams = pathArgsSchemas.reduce((acc, pathArgSchema) => {
       if (pathArgSchema.name) {