LibJS: Remove hand-rolled Object is_foo() helpers in favor of RTTI

1 files changed, 1 insertions, 1 deletions

diff --git a/Applications/Spreadsheet/SpreadsheetModel.cpp b/Applications/Spreadsheet/SpreadsheetModel.cpp
index 84b34a5e99..70193e4b63 100644
--- a/Applications/Spreadsheet/SpreadsheetModel.cpp
+++ b/Applications/Spreadsheet/SpreadsheetModel.cpp
@@ -54,7 +54,7 @@ GUI::Variant SheetModel::data(const GUI::ModelIndex& index, GUI::ModelRole role)
                 auto value = exception->value();
                 if (value.is_object()) {
                     auto& object = value.as_object();
-                    if (object.is_error()) {
+                    if (is<JS::Error>(object)) {
                         auto error = object.get("message").to_string_without_side_effects();
                         builder.append(error);
                         return builder.to_string();