fix(core): Don't override structured clone error messages from V8 (#13942)

In the implementation of structured serialization in
`Deno.core.serialize`, whenever there is a serialization error, an
exception will be thrown with the message "Failed to serialize
response", even though V8 provides a message to use in such cases.
This change instead throws an exception with the V8-provided message,
if there is one.

1 files changed, 1 insertions, 1 deletions

diff --git a/ext/web/02_structured_clone.js b/ext/web/02_structured_clone.js
index 058390cfe..62bb48ebd 100644
--- a/ext/web/02_structured_clone.js
+++ b/ext/web/02_structured_clone.js
@@ -77,7 +77,7 @@
       return core.deserialize(core.serialize(value));
     } catch (e) {
       if (ObjectPrototypeIsPrototypeOf(TypeErrorPrototype, e)) {
-        throw new DOMException("Uncloneable value", "DataCloneError");
+        throw new DOMException(e.message, "DataCloneError");
       }
       throw e;
     }