From f7bfec04ecae02e39aa0cfac82f48b03ce6943dc Mon Sep 17 00:00:00 2001
From: Giampaolo Bellavite <gpbellavite@gmail.com>
Date: Sat, 7 Jul 2018 11:57:51 +0200
Subject: [PATCH] Do not call `focus` if `input` is not defined

See https://github.com/gpbl/react-day-picker/issues/746#issuecomment-403203664
---
 src/DayPickerInput.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/DayPickerInput.js b/src/DayPickerInput.js
index ae3288eedc..7deb0e8d2b 100644
--- a/src/DayPickerInput.js
+++ b/src/DayPickerInput.js
@@ -365,7 +365,11 @@ export default class DayPickerInput extends React.Component {
   handleOverlayFocus(e) {
     e.preventDefault();
     this.overlayHasFocus = true;
-    if (!this.props.keepFocus || typeof this.input.focus !== 'function') {
+    if (
+      !this.props.keepFocus ||
+      !this.input ||
+      typeof this.input.focus !== 'function'
+    ) {
       return;
     }
     this.input.focus();