From 53e044d440ca29508529ae5cb3f6511bcbd7ac67 Mon Sep 17 00:00:00 2001
From: Constantine Genchevsky <const.gen@gmail.com>
Date: Thu, 13 Jan 2022 19:11:17 +0200
Subject: [PATCH] Preserve immutability for options.historyFallback

Fixes warnings of DefinePlugin
---
 lib/middleware.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/middleware.js b/lib/middleware.js
index e8c6c78..e07a66b 100644
--- a/lib/middleware.js
+++ b/lib/middleware.js
@@ -120,7 +120,7 @@ const getBuiltins = (app, options) => {
         await next();
       });
 
-      app.use(convert(historyApiFallback(options.historyFallback)));
+      app.use(convert(historyApiFallback({...options.historyFallback})));
     }
   };