From e219de092925f5258e36e738a8cfb27780523f8c Mon Sep 17 00:00:00 2001
From: Andrei Kashcha <anvaka@gmail.com>
Date: Wed, 15 Mar 2017 06:58:20 -0700
Subject: [PATCH] Check for drop to prevent race conditions

The `inHandler` uses `setTimeout()` function to schedule `this.open()` call. If client calls `drop.destroy()` before timeout is triggered, the instance of `this.drop` will be set to `null` which results in unhandled error in `open()`

This change fixes the unhandled error.
---
 src/js/drop.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/js/drop.js b/src/js/drop.js
index 92db0e0..e1a2d43 100644
--- a/src/js/drop.js
+++ b/src/js/drop.js
@@ -370,6 +370,11 @@ function createContext(options={}) {
       if (this.isOpened()) {
         return;
       }
+      
+      if (!this.drop) {
+        // The instance was destroyed
+        return;
+      }
 
       if (!this.drop.parentNode) {
         document.body.appendChild(this.drop);