Safer.

thesoftwarephilosopher · Aug 22, 2024 · ba7d430 · ba7d430
1 parent 51ae21a
commit ba7d430
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/site/monarch/monarch-playground.tsx b/site/monarch/monarch-playground.tsx
@@ -67,3 +67,7 @@ async function updateTokenProvider() {
   monaco.languages.setMonarchTokensProvider('typescript', mod.tokenProvider);
   setupTheme(mod.rules);
 }
+
+window.onbeforeunload = (e) => {
+  if (!confirm('Lose progress!?')) e.preventDefault();
+}