From 2281a6f432cfa17585e95b212878b65fb48c7e7c Mon Sep 17 00:00:00 2001
From: DavidKmn <davidk.9889@gmail.com>
Date: Mon, 23 May 2022 17:45:35 +0100
Subject: [PATCH] Add index validity check on goBack method

---
 Sources/FlowStacks/RoutableCollection+utilities.swift | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Sources/FlowStacks/RoutableCollection+utilities.swift b/Sources/FlowStacks/RoutableCollection+utilities.swift
index 82e8f82..d3a33df 100644
--- a/Sources/FlowStacks/RoutableCollection+utilities.swift
+++ b/Sources/FlowStacks/RoutableCollection+utilities.swift
@@ -62,6 +62,7 @@ public extension RoutableCollection where Element: RouteProtocol {
   /// Goes back a given number of screens off the stack
   /// - Parameter count: The number of screens to go back. Defaults to 1.
   mutating func goBack(_ count: Int = 1) {
+    guard self.count - count >= 0 else { return }
     removeLast(count)
   }