From d4cc2a6d16d5e72706fd7368b9adae12ff841d95 Mon Sep 17 00:00:00 2001
From: Matt Labrum <matt@labrum.me>
Date: Fri, 9 Jun 2017 09:37:56 +0930
Subject: [PATCH] Removed isMounted and added a state to track if the component
 is mounted

---
 src/Navigator.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/Navigator.js b/src/Navigator.js
index b714e99..ee89e4a 100644
--- a/src/Navigator.js
+++ b/src/Navigator.js
@@ -439,6 +439,7 @@ var Navigator = React.createClass({
       activeGesture: null,
       pendingGestureProgress: null,
       transitionQueue: [],
+      mounted: false
     };
   },
 
@@ -477,6 +478,7 @@ var Navigator = React.createClass({
   },
 
   componentDidMount: function() {
+    this.setState({mounted: true})
     this._handleSpringUpdate();
     this._emitDidFocus(this.state.routeStack[this.state.presentedIndex]);
     this._enableTVEventHandler();
@@ -571,7 +573,7 @@ var Navigator = React.createClass({
    * happening, we only set values for the transition and the gesture will catch up later
    */
   _handleSpringUpdate: function() {
-    if (!this.isMounted()) {
+    if (!this.state.mounted) {
       return;
     }
     // Prioritize handling transition in progress over a gesture:
@@ -595,7 +597,7 @@ var Navigator = React.createClass({
    * This happens at the end of a transition started by transitionTo, and when the spring catches up to a pending gesture
    */
   _completeTransition: function() {
-    if (!this.isMounted()) {
+    if (!this.state.mounted) {
       return;
     }