From a5d0e2a46ffafed8f3dbfacdf0b183bd2d5e54a7 Mon Sep 17 00:00:00 2001
From: Andrew Morris <voltrevo@gmail.com>
Date: Sun, 22 May 2022 11:39:16 +1000
Subject: [PATCH] Fix undefined elements in array toString

---
 src/vstc/virtual_machine/vs_value.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/vstc/virtual_machine/vs_value.rs b/src/vstc/virtual_machine/vs_value.rs
index 1c5b511..e378dd8 100644
--- a/src/vstc/virtual_machine/vs_value.rs
+++ b/src/vstc/virtual_machine/vs_value.rs
@@ -103,7 +103,11 @@ impl ValTrait for Val {
 
           for val in iter {
             res += ",";
-            res += val.val_to_string().as_str();
+
+            match val.typeof_() {
+              VsType::Undefined => {},
+              _ => { res += &val.val_to_string(); },
+            };
           }
 
           res