From afee82f7066d9458a1cd083a950ed4e54c16d863 Mon Sep 17 00:00:00 2001
From: Eduardo Speroni <edusperoni@gmail.com>
Date: Thu, 9 Sep 2021 09:55:04 -0300
Subject: [PATCH] fix: guard around empty cache

---
 .../angular/src/lib/legacy/router/ns-route-reuse-strategy.ts    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/angular/src/lib/legacy/router/ns-route-reuse-strategy.ts b/packages/angular/src/lib/legacy/router/ns-route-reuse-strategy.ts
index c110534..bc10800 100644
--- a/packages/angular/src/lib/legacy/router/ns-route-reuse-strategy.ts
+++ b/packages/angular/src/lib/legacy/router/ns-route-reuse-strategy.ts
@@ -133,7 +133,7 @@ export class NSRouteReuseStrategy implements RouteReuseStrategy {
 
     const key = getSnapshotKey(route);
     const isBack = outlet ? outlet.isPageNavigationBack : false;
-    const shouldAttach = isBack && cache.peek().key === key;
+    const shouldAttach = isBack && cache.peek()?.key === key;
 
     if (NativeScriptDebug.isLogEnabled()) {
       NativeScriptDebug.routeReuseStrategyLog(`shouldAttach isBack: ${isBack} key: ${key} result: ${shouldAttach}`);