From e2fd02c9ff71236518382ce555bbf38660e3e540 Mon Sep 17 00:00:00 2001
From: Benjamin Coriou <benjamin@coriou.net>
Date: Mon, 27 Jul 2020 17:37:24 +0200
Subject: [PATCH] Fixing an issue with missing propTypes

Don't really understand the issue, but this fixes #35 by:

1. providing an empty object to Object.keys as a default
2. only emitting the event when there's actually something to send along with it

This fixes an issue I was having with another component using this one (ethanselzer/react-image-magnify)
---
 src/ReactCursorPosition.js | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/ReactCursorPosition.js b/src/ReactCursorPosition.js
index 24e3fed8..7f5f8ec7 100644
--- a/src/ReactCursorPosition.js
+++ b/src/ReactCursorPosition.js
@@ -472,8 +472,9 @@ export default class extends React.Component {
     }
 
     getPassThroughProps() {
-        const ownPropNames = Object.keys(this.constructor.propTypes);
-        return omit(this.props, ownPropNames);
+        const ownPropNames = Object.keys(this.constructor.propTypes || {});
+        if (ownPropNames.length)
+            return omit(this.props, ownPropNames);
     }
 
     render() {