From 4e6e554d3c1d3a47f9e9219ae94468f4f4979154 Mon Sep 17 00:00:00 2001
From: Gert Hengeveld <info@ghengeveld.nl>
Date: Mon, 15 Feb 2021 21:47:33 +0100
Subject: [PATCH] Don't use sparse arrays because they aren't currently
 supported in QS

---
 lib/core/src/client/preview/parseArgsParam.ts | 1 -
 lib/router/src/utils.ts                       | 5 +----
 2 files changed, 1 insertion(+), 5 deletions(-)

diff --git a/lib/core/src/client/preview/parseArgsParam.ts b/lib/core/src/client/preview/parseArgsParam.ts
index 09ab841be010..f5418fc5a474 100644
--- a/lib/core/src/client/preview/parseArgsParam.ts
+++ b/lib/core/src/client/preview/parseArgsParam.ts
@@ -15,7 +15,6 @@ const validateArgs = (key = '', value: any = ''): boolean => {
 const QS_OPTIONS = {
   delimiter: ';', // we're parsing a single query param
   allowDots: true, // objects are encoded using dot notation
-  allowSparse: true, // arrays will be merged on top of their initial value
 };
 export const parseArgsParam = (argsString: string): Args => {
   const parts = argsString.split(';').map((part) => part.replace('=', '~').replace(':', '='));
diff --git a/lib/router/src/utils.ts b/lib/router/src/utils.ts
index 65bd0dcb0191..8c810ccbbdf2 100644
--- a/lib/router/src/utils.ts
+++ b/lib/router/src/utils.ts
@@ -40,10 +40,7 @@ interface Args {
 const deepDiff = (value: any, update: any): any => {
   if (deepEqual(value, update)) return undefined;
   if (typeof value !== typeof update) return update;
-  if (Array.isArray(value)) {
-    if (!Array.isArray(update)) return update;
-    return update.map((upd, index) => deepDiff(value[index], upd));
-  }
+  if (Array.isArray(value)) return update;
   if (typeof update === 'object') {
     return Object.keys(update).reduce((acc, key) => {
       const diff = deepDiff(value[key], update[key]);