From c1f04b94952adc2f4d6b32468588039221a0bd57 Mon Sep 17 00:00:00 2001
From: Samuel Reed <samuel.trace.reed@gmail.com>
Date: Mon, 27 Nov 2017 15:06:30 -0600
Subject: [PATCH] fix snapshot testing with storyshots, enzyme,
 react-test-renderer

Fixes #338
---
 src/common/createSlider.jsx | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/common/createSlider.jsx b/src/common/createSlider.jsx
index a6d02fd7e..a9cf474e7 100644
--- a/src/common/createSlider.jsx
+++ b/src/common/createSlider.jsx
@@ -87,7 +87,8 @@ export default function createSlider(Component) {
     }
 
     componentDidMount() {
-      this.document = this.sliderRef.ownerDocument;
+      // Snapshot testing cannot handle refs, so be sure to null-check this.
+      this.document = this.sliderRef && this.sliderRef.ownerDocument;
     }
 
     onMouseDown = (e) => {