From e29184e1ce9c74676e391e43ed8b4dded412e0d9 Mon Sep 17 00:00:00 2001
From: Ray Schamp <ray@scratch.mit.edu>
Date: Fri, 17 Nov 2017 15:09:57 -0500
Subject: [PATCH] Warn user before navigating away/unloading
---
src/index.jsx | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/src/index.jsx b/src/index.jsx
index 6d301f516..e55fc0ef4 100644
--- a/src/index.jsx
+++ b/src/index.jsx
@@ -7,6 +7,11 @@ import ProjectLoaderHOC from './lib/project-loader-hoc.jsx';
import styles from './index.css';
+if (process.env.NODE_ENV === 'production' && typeof window === 'object') {
+ // Warn before navigating away
+ window.onbeforeunload = () => true;
+}
+
const App = AppStateHOC(ProjectLoaderHOC(GUI));
const appTarget = document.createElement('div');
--
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