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LibWeb: Print more information about thrown DOMExceptions in the console

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This doesn't quite match the behavior of other engines, but by golly is
it helpful.
This commit is contained in:
Andrew Kaster 2024-03-20 06:43:17 -06:00 • committed by Tim Flynn
parent 6783a524d0
commit f26dd29b4d
Notes: sideshowbarker 2024-07-16 19:17:47 +09:00
3 changed files with 13 additions and 4 deletions
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11
Userland/Libraries/LibWeb/HTML/Scripting/ExceptionReporter.cpp
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@ -11,6 +11,7 @@
#include <LibJS/Runtime/Value.h>
#include <LibWeb/Bindings/MainThreadVM.h>
#include <LibWeb/HTML/Scripting/ExceptionReporter.h>
#include <LibWeb/WebIDL/DOMException.h>
namespace Web::HTML {
@ -25,11 +26,19 @@ void report_exception_to_console(JS::Value value, JS::Realm& realm, ErrorInPromi
auto message = object.get_without_side_effects(vm.names.message).value_or(JS::js_undefined());
if (name.is_accessor() || message.is_accessor()) {
// The result is not going to be useful, let's just print the value. This affects DOMExceptions, for example.
dbgln("\033[31;1mUnhandled JavaScript exception{}:\033[0m {}", error_in_promise == ErrorInPromise::Yes ? " (in promise)" : "", JS::Value(&object));
if (is<WebIDL::DOMException>(object)) {
auto const& exception = static_cast<WebIDL::DOMException const&>(object);
dbgln("\033[31;1mUnhandled JavaScript exception{}:\033[0m {}: {}", error_in_promise == ErrorInPromise::Yes ? " (in promise)" : "", exception.name(), exception.message());
} else {
dbgln("\033[31;1mUnhandled JavaScript exception{}:\033[0m {}", error_in_promise == ErrorInPromise::Yes ? " (in promise)" : "", JS::Value(&object));
}
} else {
dbgln("\033[31;1mUnhandled JavaScript exception{}:\033[0m [{}] {}", error_in_promise == ErrorInPromise::Yes ? " (in promise)" : "", name, message);
}
if (is<JS::Error>(object)) {
// FIXME: We should be doing this for DOMException as well
// https://webidl.spec.whatwg.org/#js-DOMException-specialness
// "Additionally, if an implementation gives native Error objects special powers or nonstandard properties (such as a stack property), it should also expose those on DOMException objects."
auto const& error_value = static_cast<JS::Error const&>(object);
dbgln("{}", error_value.stack_string(JS::CompactTraceback::Yes));
console.report_exception(error_value, error_in_promise == ErrorInPromise::Yes);