LibJS + js: Rethrow exception on the vm after bytecode interpreter run

When the bytecode interpreter was converted to ThrowCompletionOr<Value>
it then also cleared the vm.exception() making it seem like no exception
was thrown.
Also removed the TRY_OR_DISCARD as that would skip the error handling
parts.

1 files changed, 4 insertions, 1 deletions

diff --git a/Userland/Utilities/js.cpp b/Userland/Utilities/js.cpp
index b8ff9b9881..29d57f2cfd 100644
--- a/Userland/Utilities/js.cpp
+++ b/Userland/Utilities/js.cpp
@@ -837,7 +837,10 @@ static bool parse_and_run(JS::Interpreter& interpreter, StringView source, Strin
 
             if (s_run_bytecode) {
                 JS::Bytecode::Interpreter bytecode_interpreter(interpreter.global_object(), interpreter.realm());
-                TRY_OR_DISCARD(bytecode_interpreter.run(executable));
+                auto result = bytecode_interpreter.run(executable);
+                // Since all the error handling code uses vm.exception() we just rethrow any exception we got here.
+                if (result.is_error())
+                    vm->throw_exception(interpreter.global_object(), result.throw_completion().value());
             } else {
                 return true;
             }