now you can determine which is the last handler by checking if next function exists

src/modules/index.js

@@ -19,7 +19,11 @@ exports = module.exports = function initModules(app) {
           handlers = []
         } = config
 
-        instance[method.toLowerCase()](route, ...handlers)
+        const lastHandler = handlers.pop()
+
+        instance[method.toLowerCase()](route, ...handlers, async function(ctx) {
+          return await lastHandler(ctx)
+        })
 
         app
           .use(instance.routes())

src/modules/users/controller.js

@@ -134,7 +134,7 @@ export async function getUser(ctx, next) {
     ctx.throw(500)
   }
 
-  next()
+  if(next) return next()
 }
 
 /**