From 03c834c6472519552d6005c42dcbfe6f63784dc4 Mon Sep 17 00:00:00 2001
From: Adam Bradley <adambradley25@gmail.com>
Date: Tue, 2 Jul 2019 15:04:46 -0500
Subject: [PATCH] fix(tabs): do not emit tab change if selectedTab undefined

---
 core/src/components/tab-bar/tab-bar.tsx | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/core/src/components/tab-bar/tab-bar.tsx b/core/src/components/tab-bar/tab-bar.tsx
index 75edacc204..2cb82d7da5 100644
--- a/core/src/components/tab-bar/tab-bar.tsx
+++ b/core/src/components/tab-bar/tab-bar.tsx
@@ -34,9 +34,11 @@ export class TabBar implements ComponentInterface {
   @Prop() selectedTab?: string;
   @Watch('selectedTab')
   selectedTabChanged() {
-    this.ionTabBarChanged.emit({
-      tab: this.selectedTab
-    });
+    if (this.selectedTab !== undefined) {
+      this.ionTabBarChanged.emit({
+        tab: this.selectedTab
+      });
+    }
   }
 
   /**