From b8aae90d1b129c810d240688be1d00e15ee99f99 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E2=80=9Cchrisshank=E2=80=9D?= <chris.shank.23@gmail.com>
Date: Sun, 24 Nov 2024 15:57:14 -0800
Subject: [PATCH] add runtime error handling to rope

---
 src/arrows/event-propagator.ts | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/arrows/event-propagator.ts b/src/arrows/event-propagator.ts
index 8ab89bc..6cc5d8c 100644
--- a/src/arrows/event-propagator.ts
+++ b/src/arrows/event-propagator.ts
@@ -101,7 +101,11 @@ export class EventPropagator extends FolkRope {
   // Do we need the event at all?
   evaluateExpression = (event?: Event) => {
     if (this.sourceElement === null || this.targetElement === null) return;
-
-    this.#function(this.sourceElement, this.targetElement, event);
+    this.stroke = 'black';
+    try {
+      this.#function(this.sourceElement, this.targetElement, event);
+    } catch (error) {
+      this.stroke = 'red';
+    }
   };
 }