From 9c2755c3a71fc07323bfd26de11d0dfe0624561d Mon Sep 17 00:00:00 2001
From: Steven <steven@ceriously.com>
Date: Thu, 24 Mar 2022 18:01:51 -0400
Subject: [PATCH] Use slice in router-utils

---
 packages/next/server/router-utils.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/next/server/router-utils.ts b/packages/next/server/router-utils.ts
index 630521434fdb..c25ea5eeb572 100644
--- a/packages/next/server/router-utils.ts
+++ b/packages/next/server/router-utils.ts
@@ -3,7 +3,7 @@ export function replaceBasePath(pathname: string, basePath: string): string {
   // and doesn't contain extra chars e.g. basePath /docs
   // should replace for /docs, /docs/, /docs/a but not /docsss
   if (hasBasePath(pathname, basePath)) {
-    pathname = pathname.substr(basePath.length)
+    pathname = pathname.slice(basePath.length)
     if (!pathname.startsWith('/')) pathname = `/${pathname}`
   }
   return pathname